Background & Aim: Marine biogeography is a subject investigating the spatiotemporal distributions of marine organisms and the processes and drivers of changes in species distributions. Research in marine biogeography is promising for the conservation of marine biodiversity and the stability of ecosystem functioning and crucial for the sustainability of utilizing marine resources. Species distribution models (SDMs) are an important tool for assessing and predicting the biogeographical changes in marine species distributions.

Progresses: This review consists of three main parts: (1) the development process and current status of marine biogeography studies in China; (2) the commonly used approaches to answer the questions related to marine biogeography with a special focus on SDMs; (3) the research trends and hotspots of marine biogeography studies in China, mainly concerning the shifts in species distribution under global changes, phylogeography of marine species, biological invasion, population connectivity, marine conservation planning, marine ecological restoration and recovery, adaptation of marine species to extreme environments, as well as management of marine fisheries and mariculture planning.

Prospects: In this review, we further outlined the prospects for the future development of marine biogeography and emphasized the importance of optimizing SDMs. We also called for developing comprehensive databases of marine environments and organisms to strengthen the integration of marine biogeography with other disciplines. We hope this review will provide useful insights for the studies of marine biogeography in China.

Background & Aims: With the development and advancement of artificial intelligence technology, large language models (LLMs), such as Kimi Chat, have begun to play a significant role in biodiversity research. LLMs’s deep learning and natural language processing technologies, augmented by human feedback reinforced learning (RLHF) and proximal policy optimization (PPO), offer new avenues for handling and analyzing large biodiversity data sets.
Progresses: We explore the application of LLMs, taking Kimi Chat as an example, in investigating biodiversity research questions, reviewing literature, designing hypotheses, organizing and analyzing data, and writing research papers, as well as its potential to enhance research efficiency and quality. (1) LLMs can quickly process vast amounts of scientific literature, helping researchers distill key information and swiftly catch up with the latest research trends in specific fields. (2) LLMs can also assist researchers in formulating research hypotheses and designing experimental protocols, thereby providing abundant scientific inspiration, broadening research perspectives, and enhancing the efficiency of the initial stages of research. (3) In terms of research design, LLMs can offer advice on data collection methods, design of experiment, and statistical analyses to ensure the scientific validity and the logic of the research design. (4) LLMs can assist in scientific writing and peer review processes by helping draft scientific papers and providing suggestions for revision and polishing to enhance the quality and readability of the papers, and it also supports researchers in understanding and responding to peer review comments and optimizing the presentation of research findings. We also discuss the challenges and limitations encountered during using LLMs, such as the need for professional judgment, the homogenization of research methods, the accuracy of data and results, and ethical issues. Additionally, we propose strategies for integrating this technology with traditional biodiversity research methods in the future.
Prospects: We demonstrates how LLMs can aid in biodiversity research, thus advancing scientific discovery and ecological conservation strategies.

Aim: The study aims to better understand plant diversity in the border areas of Yunnan. These border areas have relatively intact forest ecosystems but are poorly explored.

Methods: In this study, plants were collected and photographed through intensive field investigation, made into specimens, sorted and identified. The voucher specimens for each recorded species were deposited in the Herbarium of Xishuangbanna Tropical Botanical Garden of Chinese Academy of Sciences (HITBC), Herbarium of Institute of Botany of Chinese Academy of Sciences (PE), Herbarium of Kunming Institute of Botany of Chinese Academy of Sciences (KUN) and Herbarium of Xiamen University (AU).

Results: One new record family, namely Aptandraceae (Anacolosa griffithii), two new record genera, namely Pottingeria (P. acuminata), Cordisepalum (C. phalanthopetalum), thirty new record species, namely Phlogacanthus gomezii, Staurogyne shanica, Hydnocarpus macrocarpus, Alphonsea ventricosa, Huberantha jenkinsii, Miliusa chantaburiana, M. dioeca, Impatiens andersonii, Garcinia lanceifolia, Dillenia parviflora, Parashorea buchananii, Castanopsis birmanica, Heritiera burmensis, Phrynium pubinerve, Bulbophyllum obrienianum, B. sinhoense, Dendrobium dantaniense, D. parcum, Epipactis flava, Eulophia macrobulbon, Micropera mannii, Vanilla borneensis, Phyllanthus discofractus, P. mirabilis, Maesa tomentella, Sabia wardii, Ailanthus integrifolia subsp. calycina, Wikstroemia floribunda, Hedychium gardnerianum, Monolophus linearis, were reported for the flora of China.

Conclusion: The border area of Yunnan possesses one of the richest floras in China, but the floristic survey in this area is still inadequate. Therefore, intensive floristic surveys are needed to be strengthened in the future to obtain reliable information on the flora of the border areas of Yunnan.

Aims: The tagging, positioning, and tracking of animals are crucial approaches to the study of their spatial movements. In China, the application of sensor-based wildlife tracking technologies for free-ranging animals has gained significant traction since the 1980s. These technologies have been widely employed in studies related to wildlife behavior and ecology. To provide a comprehensive overview of the current status of wildlife tracking technologies in China and offer insights into the future, we conducted this review based on comprehensive literature research.

Methods: We systematically searched academic articles on wildlife tracking studies conducted in China from 1970 to 2022. We compiled information of each study, including the type of sensor and tracking technologies used, the taxonomic group of tracked animals, the research field, and the location of study sites.

Results: We collected 519 relevant articles published between 1970 and 2022, encompassing 185 species belonging to 7 classes and 32 orders. The study sites encompassed 34 provinces (including municipalities, autonomous regions, and special administrative regions) in China. We identified four hotspots of tracking studies within the country: the eastern edge of the Qinghai-Tibet Plateau and surrounding mountainous areas, the middle and lower reaches of the Yangtze River, the coastal areas from East to South China, and the Northeast China region. Five senor-based tracking technologies were identified in these studies: radio telemetry (RT) (accounting for 47.7% of the total researches), radio frequency identification (RFID) (3.2%), light-level global geolocator sensor (GLS) (0.6%), satellite tracking based on the Argos Satellite System (ASS) (9.3%) or Global Navigation Satellite System (GNSS) (39.3%). Among these technologies, VHF radio telemetry has had a longer history and more applications in China; ASS and GNSS technologies have been introduced late but have undergone rapid growth, with GNSS emerging as the most widely applied technology in the past 5 years. Radio telemetry is predominantly employed for large- and medium-sized mammals, small mammals, terrestrial birds, amphibians and reptiles. GNSS technology is mainly applied in tracking swimming and wading birds. ASS technology is primarily used in fish studies, while RFID technology is prevalent in tracking invertebrate. The choice of technology varies across different research fields, with GNSS and ASS satellite tracking being the primary technology used in migration studies.

Conclusions: The application scale of sensor-based wildlife tracking technologies in China is experiencing rapid expansion, resulting in a rapid increase of numbers of tagged animals and accumulated data. In the future, wildlife tracking studies in China should put emphases on: (1) deepening the research to examine the underlying ecological mechanisms and broadening the research scales, (2) facilitating interdisciplinary collaboration and fostering technological innovation, (3) advocating for and promoting data sharing and fostering multilateral cooperation, and (4) continuing to advance the development and improvement of domestic tracking equipment and technologies. This will provide reliable scientific supports for wildlife ecology research and resource conservation and management in China.

Background and AimsDriven by China’s carbon neutrality goals, renewable energy is growing drastically, spurring the large-scale development of photovoltaics (PVs) and wind power. Despite this prevalence, systematic reviews detailing the ecological concerns associated with these technologies are scarce.

Method We provide an overview of domestic and international research on the environmental impact of centralized PV and onshore wind farms, focusing on species diversity and ecosystem services.

Results PVs and wind farms both alter climate factors, including temperature, humidity and wind speed. The construction of PVs and wind farms damages vegetation, causing soil erosion and water loss. Construction also results in solid waste and wastewater, contributing to pollution around the site. The ecological impact of PVs is mainly reflected by changes in vegetation and habitat quality, which can have adverse effects on certain species. In relatively arid areas, PVs can play a role in lowering temperatures and increasing humidity, promoting vegetation recovery. In desert areas, they can act as windbreaks. Wind farms can result in soil and vegetation disturbances, bird collisions and mortality, and habitat fragmentation, all of which affect species migration and regional ecosystem services. Despite these potential issues, current research remains insufficient in assessing ecological impact systematically.

Prospects We recommend research focusing on three particular areas: (1) Improving and unifying survey methods for accessing ecological impacts on centralized PVs and wind farms; (2) Adopting advanced ecological survey techniques; and (3) Strengthening systematic studies on ecological impacts at the species and ecosystem levels. Moving forward, it is necessary to study the ecological impacts of PVs and wind farms in depth. Biodiversity assessments should be implemented at the early stages of energy planning, and corresponding mitigation strategies should be adopted.

Background & Aims: Amphibians and reptiles are important indicators of ecosystem health, and they are vulnerable to changes in the environment. Many of their populations are undergoing rapid decline and species extinction in the worldwide. A recent assessment of Red List of China’s Vertebrates found that 37.05% of amphibians and 30.5% of reptiles are threatened. Therefore, building a national biodiversity monitoring network, to research and analyze the trend and threats of amphibians and reptiles is a prerequisite for conservation. As part of the Chinese Biodiversity Monitoring and Research Network (Sino BON), the Sino BON-Amphibian & Reptile has covered 11 key areas with rich biodiversity and high habitat heterogeneity across China. This program aims to combine intensive field surveys and ecological modeling techniques to evaluate population dynamics and community structures of amphibian and reptile species in the study areas.

Review Results: Currently, the Sino BON-Amphibian & Reptile adheres to focusing on the research of amphibian and reptile diversity. A total of 16 species were newly discovered in China, including 13 new species and 3 national new record species. Significant progress has been made in the national need for the protection of Critically Endangered amphibian (CR) Chinese giant salamander (Andrias davidianus) and Endangered (EN) amphibian Taliang crocodile newt (Liangshantriton taliangensis), the environmental DNA (eDNA) technology and radio tracking technology applied in wild, the ecological impact of desertification habitats on reptiles, and invasive alien species, which have provided strong scientific support for protecting biodiversity of amphibians and reptiles in China.

Prospects: For further progresses, it is still necessary to continuously enhance monitoring and research on amphibians and reptiles, strengthen monitoring network construction and application of advanced technologies, emphasize the protection of amphibians and reptiles from the level of laws and regulations, establish and optimize the protected areas, and implement the necessary ex situ and in situ conservation, so as to achieve more effective protection of rare amphibian and reptile resources.

Background & Aims: The regions of Southeast Asia are recognized as global biodiversity hotspots that require conservation priority. Since the mid-19th century, Southeast Asia has been widely considered as one of the most important foundations of biogeography. This recognition stems from the groundbreaking field works of Alfred Russel Wallace, who spent eight years to extensively explore the regions and proposed the geographic distribution patterns of fauna in Malesia (or the Malay Archipelago). Wallace’s works in Southeast Asia, such as the famous “Wallace Line” and its distinct distribution patterns, established the region as a crucial cradle and frontier of biogeography. Also, such renowned works have garnered significant attention from numerous biogeographers and ecologists. Additionally, the unique geomorphology and abundant biodiversity in Southeast Asia have sparked a growing scientific interest, leading to an increasing number of studies that explored the biodiversity and geographic distribution patterns in the regions. The comprehension of geographic distribution patterns of biodiversity in Southeast Asia can enhance our understanding of the origination, evolution, and response of global biodiversity to environmental and climatic changes.

Progress: In this review, we have undertaken a comprehensive synthesis of the primary biogeographic investigation conducted in Southeast Asia, spanning from the era of Alfred Russel Wallace to the present day. The main biogeographic studies in Southeast Asia are retrospectively reviewed and the existing problems are considered here.

Conclusion: Several key findings of biogeography in Southeast Asia with the most important distribution patterns are listed as follows. Firstly, Southeast Asia, based on the boundary or delimitation, encompasses the Indochina Peninsula and Malesia, which consist of four distinct bioregions: Indochina, Sundaic, Philippines and Wallacea. Secondly, the biogeographic patterns with these regions, as well as the biogeographic relationships or patterns among regions are primarily influenced by the mechanism of vicariance, migration and dispersal. Thirdly, the difference in biogeographic boundaries, particularly along the Wallace Line, can be attributed to variations in the migration and dispersal capacity of plants and animals. Lastly, the biogeographic connections between Southeast Asia and Sahul are mainly driven by the exchanges of flora and fauna, with elements from both regions have been migrated to and from each other. This review presents some ideas and offers recommendations to address the unresolved challenges of the field of biogeography in Southeast Asia. In all, we hope this review serves as a link between past and future, intends to throw out a minnow to catch a whale, and facilitates the flourishing development of biogeography in Southeast Asia.

Background & Aims: Seahorses (Hippocampus spp.) are well-known fishes from the family Syngnathidae, mainly due to their unique external morphology and reproductive strategy of male pregnancy. All Hippocampus species, listed in CITES Appendix II in 2002, are under trade regulations internationally. All Hippocampus species (wild populations only) inhabiting in China’s waters were listed as Category II of the National Key Protected Wild Animals in 2021. Through literature review, we (i) updated the species list of seahorses occurring in China’s waters, (ii) summarized their distribution regions, habitat and breeding features, and (iii) presented their threatened categories and threats. Our goal is to inform effective conservation measures for seahorse wild populations in China.

Review findings: In this paper, we reviewed and summarized seahorse species diversity, distributions, habitat uses, reproductive features, threatened categories, and threat factors from various reference sources, including online databases (Fishbase, The Fish Database of Taiwan, GBIF, WoRMS, IUCN), peer-reviewed papers, reports, theses, as well as informative Chinese ichthyographies. A total of 16 seahorse species were recorded in China’s waters, including 5 pygmy seahorses that are no more than 30 mm in body height. Among these, Japanese seahorses (H. mohnikei) were distributed most widely, across China’s all four seas. Crowned seahorses (H. coronatus) were only found in the Bo Hai, while Barbour’s seahorses (H. barbouri), Beibu Bay seahorses (H. casscsio, a new species found in 2016), and Tiger tail seahorses (H. comes) were only found in the South China Sea. Six species were only found in the coastal waters of Taiwan Province. Southern China, including Taiwan, Hainan, Guangdong, Fujian, and Guangxi, has high seahorse species diversity. The habitat uses of seahorses in China’s waters are very diverse, including coral and rocky reefs, seagrass and seaweed beds, muddy and sandy bottoms, gravels, and mangrove meadows. Some species have special requirements for their habitats. According to IUCN, 8 seahorse species were listed as Vulnerable (VU), 2 species were listed as Least Concern (LC), 5 species were listed as Data Deficient (DD), and 1 species was Not Evaluated (NE). The main threats to seahorses are bycatch and habitat destruction.

Recommendations: Seahorses are a special taxonomic group of fishes with high vulnerability, and we propose five recommendations for urgent conservations of seahorses in China. First, the significance of seahorses as flagship species in marine biodiversity conservation should be realized and we need to use them to raise marine-conservation awareness of the general public. Establishing marine protected areas for seahorses and their habitats, and applying other effective area-based conservation measures (OECMs) might also be taken into account. Second, it is known that non-selective fishing gears such as bottom trawling have high seahorse bycatch volume, and the dredge net operations can damage seaweed beds where seahorses inhabit. Therefore, any solution for reducing bycatch, increasing survival rates of seahorses after releasing, protecting habitats and innovating fishing gears are welcome. Third, identifying the key habitats of different seahorse species in China’s waters is very important for establishing protected areas and fisheries spatial management. Currently, such data are very limited. Some key areas we synthesized in this study require national-wide surveys to validate before planning for marine reserves and OECMs of seahorses in China. Fourth, seahorse trade regulation and enforcement should be strengthened, and the management of seahorse utilization should be regulated properly. To this end, techniques to distinguishing wild populations from farmed seahorses should be established as soon as possible before the expansion of seahorse aquaculture.

Aims: The Yarlung Tsangpo River, one of the ten longest rivers in China, spans two major zoogeographic regions of the world: The Palearctic and the Oriental realms. While previous papers have focused on small portions of the river, a basin-wide-scale study to catalog its fish composition, diversity patterns, and species fluctuation is lacking. This study synthesized empirical data from field studies over the past two decades on fish diversity in the Yarlung Tsangpo River, compiled a list of fish diversity in the Yarlung Tsangpo River Basin in China, and analyzed the status of the fish diversity and the main threats to its diversity. The findings provide a scientific foundation for management and conservation of fish diversity in the Yarlung Tsangpo River Basin.

Methods: In total, 66 sections were included in this study. Of them, 58 were actually surveyed in the field, and 8 were collected from literatures; two in the upper reaches, 40 in the middle reaches, and 24 in the lower reaches; 24 in the main stream, 33 in the tributaries, 2 in the lakes, 3 in the tributary reservoirs, and 4 wetlands. These sampling sections (locations) were selected according to their geomorphological characteristics, as well as the accessibility of each location for sampling. The fish investgations were conducted from 2004 to 2023. Methods for collecting fishes included gillnets, shrimp coops, and battery-powered backpack electrofisher. After compiling the data from all of the sites, the degree of endemicity was calculated using the corrected weighted endemism index.

Results: There are 155 native species in 10 orders, 25 families, and 70 genera in the Yarlung Tsangpo River Basin. Out of all of the detected species, 29 species and one genus are endemic to the river. Five species were on China’s Key Protected Species List (Grade II); and 26 species were categorised as threatened (i.e. endangered, vulnerable, or near threatened) on the IUCN Red List of Threatened Species and China’s Biodiversity Red List. The sections with high species richness are located in the middle and lower reaches of the Yarlung Tsangpo River, while the lowest species richness is found in the Great Canyon sections. Fish fauna of the river is dominated by Qinghai-Tibetan Plateau, and South Asian fishes. The Jiaresa-Bangxin section of the Yarlung Tsangpo River Grand Canyon may be the boundary between the two major zoogeographical regions of freshwater fish. By the end of 2023, 30 species of non-native fish in 8 orders, 16 families, and 24 genera had been recorded in the natural water bodies of the Yarlung Tsangpo River Basin. Of these non-native fish species, three species were introduced to different regions within the Yarlung Tsangpo River Basin. In recent years, there has been a rapid increase in the introduction of both native fishes and non-native cold-adapted fishes through the plateau’s drainage systems.

Conclusion: Through cataloging the fish diversity in the Yarlung Tsangpo River Basin, we found that invasion of non-native fishes is the main threat to fish diversity. In the future, we should focus on fish surveys of lakes and tributaries in the lower reaches of the river, strengthen the resources for data integration, and establish a basin-level data management platform. Further, taxonomic research should be strengthened through international cooperation. Additionally, long-term monitoring of fish resources should be implemented as soon as possible to monitor fish diversity and promote conservation in the Yarlung Tsangpo River.

Aim & Background Unlike biodiversity offsets, which are based on the premise of biodiversity loss, biodiversity credits are an economic instrument that is measurable, traceable, tradable, and generates net biodiversity gains. To address the funding gap for biodiversity and to halt and reverse global biodiversity loss, biodiversity credits have emerged with carbon credits as a blueprint.

Results This paper introduced the conceptual framework of biodiversity credits, providing a detailed explanation of their similarities and differences with biodiversity offsets and carbon credits. Drawing on the foundation of high-quality carbon credits, the paper summarized the principles of biodiversity credits, including their accounting approaches and governance systems. Furthermore, it presented the current global market for biodiversity credits, offering specific practical examples of various trading projects.

Prospects The paper also examined four aspects of problems and challenges related to biodiversity credits: (1) pricing in voluntary markets lacks clear standards; (2) the risk of being a potential greenwashing tool used by enterprises; (3) regulatory and governance systems need safeguards for transparency and community rights; (4) the compatibility with carbon credits is controversial. Looking forward, challenges and opportunities of biodiversity credits co-exist as a critical tool for businesses to achieve their Environmental, Social and Governance (ESG) goals.

Background & Aims Seagrass beds rank among the earth’s most valuable ecosystems, providing extensive ecosystem services to human. Despite their global significance, seagrass beds in the world, particularly in China, face threats from human activities, leading to their degradation. While recent studies in Guangdong Province have increasingly elucidated the distribution characteristics of seagrass beds and threats from multiple sources, a systematic summary of these findings remains limited. Given the anticipated continued pressure of high intensity human activities in the future period of time along the Guangdong coast, a deeper understanding of the challenges faced by seagrass beds in crucial from formulating targeted conservation suggestions aimed at effectively preserving their biodiversity.

Review results In this work, we comprehensively reviewed research results on Guangdong seagrass beds since the 21st century and summarized the information on their distribution of seagrass beds. Through a combination of field investigations and domestic and international research, we identified to Guangdong seagrass beds. The results showed that seagrass was widely distributed along the Guangdong coast, covering an area of 1,540 ha and comprising five species. Halophila ovalis and H. beccarii were both dominant species, while Zostera japonica, Halodule uninervis, Ruppia brevipedunculata had more limited distribution. This paper illustrated the impact of both human and natural factors on growth and distribution of seagrass, and pointed out that human activities such as mariculture, fishing, land-based pollution, marine engineering as primary threats. Moreover, the study acknowledged the significance of species invasion and global climate change.

Perspectives Aiming at threats mentioned above, we proposed conservation suggestions that building upon established protection measures. These recommendations include strengthening scientific research on seagrass bed ecosystem, improving the ability of survey and surveillance on seagrass, establishing a regulatory system for protecting seagrass, managing and controlling pollutant emissions, reinforcing ecological restoration of seagrass beds, and launching popular science activities and awareness campaigns.

Aim: The composition of fish in large rivers exhibits longitudinal variation along the river influenced by environmental gradients. The River Continuum Concept revolutionized the understanding of river ecosystems by linking changes in river macro-invertebrate trophic functional groups to the differentiation of nutrient sources between upstream and downstream areas. The concept offers a novel framework for studying the distribution patterns of river biomes at large scale, from upstream to downstream. In this study, a dataset encompassing 168 species of fish were used, covering the entire range from Zhimenda, the starting point of the Jinsha River, to the estuary. Functional groups were first classified based on criteria such as body sizes, shapes, feeding habits, and life-history strategies. Subsequently, their distribution patterns as well as their adaptability to environmental factors were investigated across different scales.

Methods: A total of 14 functional groups and 59 combined function groups were classified, and 5 environmental factors were selected: elevation, mean temperature, mean annual temperature range, river width and river slope gradient. The distribution pattern of fish functional groups was analyzed using hierarchical clustering, while ordination analysis was applied to analyze the relationship between environmental factors and fish functional groups at different scales.

Results: The results revealed a primary and secondary differentiation in the distribution of fish functional groups within the Yangtze River: the primary differentiation occurs at Longkaikou, acting as the dividing point, while the secondary differentiation is observed at Shigu, Longkaikou and Downstream of Baihetan Dam. Moving from the upstream to the downstream, fish body sizes transition from small to medium and large, body shapes shift from predominantly fusiform and cylindrical to include compressform appearances. Feeding habits evolve from primarily omnivorous to encompass a more diverse range of feeding functional groups, and life-history strategies transform from opportunistic to periodic and equilibrium strategies. The distribution pattern of fish functional groups is a result of adaptation to spatial differentiation of environmental factors at different scales. Across the larger scale of the entire Yangze River, elevation and temperature, which are associated with climatic features, serve as dominant factors; whereas, as the spatial scale of the study shrinks, the influence of river slope drop associated with topographic features, becomes more prominent and plays the most important role in the I-1 river section at medium scale.

Conclusion: The distribution pattern of fish functional groups is direct outcome of the fish adaptation to environmental differentiation. Furthermore, the specific environment factors that determine the distribution of fish functional groups vary at different scales, consequently affecting the corresponding functional traits of the fish. This study contributes to our understanding of the river continuum theory, the spatial distribution pattern of fish in the Yangtze River, and the environmental adaptation characteristics of fishes.

Background & Aims: Urbanization is a global process accompanied by rapid environmental changes, which accelerates the evolutionary process of urban organisms and reshapes community structure and species interactions in urban ecosystems. In this paper, we reviewed relevant researches on the effects of urbanization on animals at community, population, and individual level. Then we summarized both the advances and shortcomings in the scientific urbanization literature. Finally, we provided an outlook for research in the related fields.

Review Results: Currently, relevant studies primarily reflect the level of urbanization by using the proportion of impervious area or the urban-rural gradient. By replacing time with space, the studies explore the changing trend of species composition and diversity, population demographics, genetic structure of animals, biological traits, phenology, and behavior under urbanization. Most studies focus on descriptive analysis, while mechanism-based research and applied research are relatively lacking.

Prospect: (1) Based on the observed phenomena under urbanization, future studies should conduct controlled experiments to identify the key factors affecting different animals under urbanization and explore the molecular genetic basis of urban biological evolution with molecular methods. (2) Particular attention needs to be paid to adaptive species in urban grey habitats, which are often associated with humans, pets, or food. Understanding how urban species adapt may provide direction and help predict the future effects of urbanization on animals, including human beings. (3) Since complex interspecific interaction networks can buffer the impacts of the change of animal abundance and behavior on ecological services such as pollination, seed dispersal, and pest control to a certain extent, the effects of urbanization on multitrophic networks should be studied further. (4) Finally, basic research on animal diversity and genetic structure should be extended to urban ecological planning and restoration.

Background & Aims: Biodiversity conservation stands as a critical imperative for China’s ecological security and the advancement of an ecological civilization. It also represents a vital public welfare endeavor crucial for fostering sustainable development. Despite significant efforts, China’s biodiversity conservation efforts continue to confront substantial challenges, including habitat fragmentation, declining habitat quality, and the proliferation of invasive species. Existing biodiversity conservation policies have thus far fallen short of effectively reversing the overarching trend of biodiversity loss. In light of these challenges, this paper seeks to explore the visionary objectives of biodiversity conservation in China. It analyzes the evolutionary trajectory of China’s biodiversity conservation policies, highlights key measures implemented, and outlines the development trend of biodiversity conservation development in the country.

Policy evolution: To reconcile the delicate balance between conservation and development imperatives, the state has implemented a diverse array of plans, strategies, notifications, and measures. Beginning with the protection of individual species, China has progressively expanded and refined the scope, objectives, and strategies of biodiversity conservation, gradually crafting a comprehensive policy framework for biodiversity conservation. Reflecting the evolving focus on conservation targets, China’s biodiversity protection has transitioned from single-species protection and classification-based approaches to a more holistic and integrated conservation paradigm. Furthermore, biodiversity conservation efforts have been systematically integrated into various national plans, facilitating comprehensive protection across diverse ecosystems and species. Consequently, China’s biodiversity conservation journey can be delineated into three distinct stages: the nascent phase (pre-1994), the rapid development stage (1994‒2010), and the ongoing in-depth improvement stage (2010‒present).

Main measures: In general, China has implemented a variety of conservation and restoration measures, resulting in notable successes across multiple fronts. These measures can be broadly characterized as direct protection, prevention and control, and sustainable use. Initially, biodiversity conservation efforts primarily focused on direct protection measures. However, over time, there has been a discernable shift towards a more comprehensive approach, encompassing a combination of direct conservation strategies, prevention, control measures, and sustainable utilization practices.

Development trends: To advance the establishment of a robust biodiversity conservation policy framework and elevate the effectiveness of biodiversity conservation efforts, it is imperative to achieve alignment, or the “three fits”, between biodiversity conservation and territorial spatial planning, the advancement of information technology, and the formulation of national strategies. By ensuring coherence and synergy, it is envisaged that this approach will facilitate the attainment of biodiversity conservation objectives and realize the vision of harmonious coexistence between humans and nature by 2050.

Aims Plant ex situ conservation will be a core task in the on-going construction of the national botanical garden system of China. However, many issues regarding the status and role of plant ex situ conservation in biodiversity conservation, as well as how to set up the goals for plant ex situ conservation in China, are still under discussion. The objective of this study is to address these unresolved issues.

Methods The study utilizes literature reviews and international conventions such as the “Kunming-Montreal Global Biodiversity Framework” and the upcoming “Complementary Actions Related to Plant Conservation to Support the Implementation of the Kunming-Montreal Global Biodiversity Framework”.

Results Through a review of the development history and achievements of plant ex situ conservation over the past 40 years, this paper clarifies some doubts and misconceptions about plant ex situ conservation. Furthermore, this article proposes the goals of plant ex situ conservation in China, as “Establish programs to ensure ALL threatened plant species are effectively conserved by ex situmethodologies, aiming to achieve genetically diverse representations”.

Conclusion The establishment of the national botanical garden system in China presents an opportunity to enhance plant ex situ conservation efforts. By improving the quality of processes involved in ex situ conservation program, China can elevate its conservation practices to a higher level.

Aim: Notwithstanding talk of a “taxonomic impediment” over the past 30 years, the exponential growth in the global number of newly described spider species during the 1975-2000 period has continued unabated. This paper focuses on the advances in taxonomic studies of spiders in 2022 worldwide, with detailed statistical analyses of new taxa, type localities, arachnologists driving such research, and journals publishing their work.

Progress: A total of 1,177 new taxa (including species in amber) were described in 2022, comprising 81 new genera and 1,096 new species. They belong to 74 families, with type localities spanning across 97 countries and jurisdictions. The new taxa were documented by 340 arachnologists in 289 papers, published separately in 60 journals. Out of these 289 papers, 23 or 8% comprised monographs, regional studies, and revisions of selected higher taxa (at family and genus levels). The proportion of papers incorporating DNA analyses made up 18.3% (totaling 53 papers). China is the country with the highest number of new species discovered, a total of 362, accounting for 33.0% of the global tally. With as many as 75 arachnologists naming new spider taxa, China becomes the country with the highest number of publishing spider taxonomists, accounting for 22.1% of the world’s total. Among them, the most prolific arachnologist is Shuqiang Li who described a total of 194 new taxa, accounting for 16.5% of the new taxa described in 2022 worldwide. Altogether, Li and his remaining 74 Chinese colleagues described a total of 436 new taxa, comprising 26 new genera and 410 new species belonging to 50 families, from China, Myanmar, and eight other countries and jurisdictions. These new taxa described by Chinese arachnologists made up 37.0% of the 2022 global aggregate, an improvement over the Chinese output 2021 (33.8%) and during the 2016-2020 period (28.1% on average).

Background & Aim: There are more than 140 species of bats in China, accounting for about 10 percent of the world’s bat species. China is one of the countries with the richest bat species diversity in the world. With the development of urbanization, the species diversity of bats in China has been seriously threatened. This paper aims to discuss the current state of research on bats in China under the background of urbanization, and then, based on the threats of urbanization factors faced by bats in China, to propose targeted conservation recommendations.

Progresses: The review preliminarily defines urban bats as those whose life history is not directly controlled by humans, but whose stages such as foraging, roosting, and migration are completed in urban and surrounding areas affected by urbanization. Thus, their morphological, physiological, behavioral, and genetic adaptive characteristics are influenced by the urbanization In the process of urbanization, bats face a range of threats, including human hunting, human buildings, roads, light pollution, noise pollution, and chemical pollution; this is mainly manifested in three aspects in China: loss of habitat, utilization of biological resources, and disturbance of habitat. Despite this, preliminary bibliometric analysis indicates that research on the impacts of urbanization on bats in China is relatively lacking, and this field needs more attention.

Conservation Measures: In view of the significant impact of urbanization threats on the existence of bats in China and the scarcity of related research, it is necessary to strengthen the protection of bats in the process of urbanization in China. We suggest that research in the fields of taxonomy and conservation genomics should be intensified, special surveys for urban bats should be conducted, and the protection of bat habitats should be valued. As a result, the management of light and noise pollution should be strengthened, legislative protection should be carried out for bats that are unique to China and have a higher level of threat, and science popularization education related to bats should be carried out for the public, i to better protect bats in the process of urbanization.

Background & Aims: Polychaetes constitute a vital component of the marine benthic community, playing an important role in the marine biological monitoring, mariculture, benthic food chain web, ecological assessment and ecological restoration. This study categorizes the investigation into species diversity of the polychaete annelids in the Chinese sea areas into three chronological stages based on the year of the initial species description, the publication of new species, and the inception of doctoral thesis on the subject.

Progress: During the first stage (1933-1961), Chinese scholars documented numerous polychaete species, although no new species were identified. The second stage (1962-2007) witnessed the discovery of 49 new species, although no dedicated doctoral or master’s thesis were produced. The third stage led to the identification of 120 new species, with doctoral or master’s thesis. From 1933 to 2022, the number of new species and new recorded species found by Chinese scholars showed an ascending trajectory, albeit with substantial fluctuations across different time spans, particularly notable in the second stage.

Proposal: At present, the study of polychaete species diversity in China encounters challenges related to the classification of certain families, genera, and species, with some requiring urgent attention. Furthermore, species families and genera demand in-depth exploration, while certain new species await acknowledgment from the World Register of Marine Species. Addressing these existing problems, this paper proposes to enhancement of the polychaete database and the argumentation of research pertaining to species diversity, genetic diversity, genetic variability, and environmental DNA in the Chinese context.

Background & Aims: There are 1,591 fish species in China’s inland waters, which accounts for 10% of the inland water fish species in the world. However, the development of the fish diversity monitoring in China’s inland water has still lagged and the long-term continuous and comprehensive monitoring networks and platforms has been scared. The China inland water fish biodiversity observation network (CIWF-BON) is the first nationwide network built for monitoring fish diversity of the inland waters in China. The purpose of this paper is to give a thorough overview of the achievement and to highlight the operations and duties of CIWF-BON.

Progress: The network has established the first national database of the inland water fish biodiversity and collects and preserves more than ten thousand fish specimens and the fish diversity data from important river basins, including the data sets of fish species diversity, early resources, genetic diversity, and biology of important fish species, and so on. The network also has established technical specifications for monitoring fish diversity in inland waters in China based on the synthesis of the conventional and novel monitoring methods to promote the standardization of collecting fish diversity data and enhance the possibility of analyzing large-scale data. The Chishui River Rare and Endemic Fish Conservation and Aquatic Biodiversity Observation and Research Station of the Chinese Academy of Sciences has been built to further monitor the fish diversity of the Chishui River and undertake the research on the protection and restoration of fish resources in the upper reaches of the Yangtze River basin.

Findings: Based on the long-term monitoring data, the network has systematically researched the distribution pattern, change, and the impact factors of the fish communities in the important rivers, the characteristics of reproductive biology and reproductive impact mechanisms of the endangered fish Chinese sturgeon (Acipenser sinensis), the environmental conditions of the four major Chinese carps reproduction in the middle reaches of the Yangtze River, as well as the biological characteristics of the endemic fish. The results show that the human activities, such as overfishing, dams, and invasive species, have caused significant changes in fish community structure of the important river basins. Large water conservancy and hydropower projects in the mainstream of the Yangtze River have caused the sharp decline in the population of Chinese sturgeon and seriously influence the breeding activities, making the wild population critically endangered. After the impoundment of the Three Gorges Reservoir, the eggs and larval of the four major Chinese carps (FMCC) are significantly decreased from 1997 to 2012 in the middle Yangtze River. The first spawning dates of FMCC in the Yichang reach delayed by about 21 days and the number of the eggs is changed with first decreasing and then increasing. The results lay the data foundation and provide the scientific evidence for the important national missions and policies, such as assessing the ecological impact of the Three Gorges Project, the ten-year fishing closure on the Yangtze River, the ecological and environmental protection of the Chishui River, and the conservation of the Chinese sturgeon, and so on.

Suggestions: To advancing the construction of the national observation network, we suggest to increase investment and establish observation stations, to promote data sharing and regional cooperation, and to conduct research and application of novel technologies and methods.

Background & Aim: In response to the rapid global change, a growing number of species have been undergoing range shifts, which includes two main processes: one is the non-native species invasion mediated by human activities, and the other is the natural range expansion of native species. There are both similarities and differences between these two processes. It is thus critically important to distinguish their similarities and differences to develop scientific strategies for invasive species prevention and native species conservation.

Progresses: By comparing the non-native species invasion and native species range expansion, we found that both non-native species invasion and native species range expansion are increasing under global change. However, there are obvious differences in potential drivers, spatial-temporal scales, occurring rates, species traits predicting the process, and impacts on new ranges between the two processes. The non-native species invasion usually occurs over long distance with the aid of human activity, spreads rapidly after establishment, high predictive ability of species traits, and poses a serious threat to local biodiversity. By contrast, range expansion of native species usually occurs at smaller spatial scales, slower occurring rates, and lower predictive ability of species traits, thus generally has less impacts on new regions.

Prospects: As it is difficult to accurately determine the potential impacts of new-arrival species on recipient habitats, long-term monitoring and studies assessing the biological and ecological effects of these two processes on local population dynamics, community structure, and ecosystem function are needed, which is important to develop schemes of non-native species mitigation and native biodiversity conservation.

Background: The digestive tracts of animals host intricate microbial communities that play a crucial role in the physiological and metabolic processes of the animals. Current research suggests that the evolution and diversity of these digestive tract microbiota are influenced by factors such as the animals’ living environment, dietary habits, and lifestyle. Furthermore, the composition and function of the microbial communities in the digestive tract can also impact the animals’ evolution. The interaction between parasitic and host species is acknowledged as a significant driving force for microbial diversity during the evolutionary processes of both.

Progress This paper focuses on the interaction between animals and digestive tract microorganisms, summarizes the evolutionary relationship between animals and digestive tract microorganisms and the composition of digestive tract microflora in different animals, and discusses the relationship between animals and digestive tract microflora in adaptive evolution and the dominant microorganisms in digestive tract of different animals. Despite the diversity of gut microbial composition in animals, it was found that 70% to 90% of gut microbial communities in most animals still come from the phyla Firmicutes and Bacteroidetes, which may be due to their significant role in the degradation of complex carbohydrates.

Conclusion: Current research should take into account the definition of the evolutionary trend of animals and digestive tract microorganisms, the speed of evolution, and the influence of competition and cooperation between animals and digestive tract microorganisms on the evolutionary relationship between the two, so as to verify its accuracy.

Background & AimThe floral spur stands out as a key innovative trait that has evolved in response to the interaction between plants and pollinators. This trait is widely distributed in angiosperms, showcasing a highly variable morphology among different species. Previous research has focused on exploring the complex relationship between floral spur and their corresponding pollinators.

ProgressFirstly, this review introduces the concept and function of the spur, elucidating the diversity in spur morphology, length, color, and contents of across various species; secondly, it describes the factors contributing to intraspecific and interspecific variations in floral spur morphology; then, it summarizes a series information on cellular and key molecular mechanisms governing the formation and development of floral spur. The distribution of the spur in angiosperms, coupled with the diversity in spur formation sites and the molecular mechanisms of development, suggests that the multiple origins of the spur with convergent evolutionary features, but the pattern of floral spur formation and development appears non-conserved in the evolutionary progression.

Prospects This review offers the following perspectives for future research on floral spur: (1) Constructing a comprehensive database documenting the phenotypes of angiosperm floral spurs to provide fundamental data for the systematic investigations; (2) Constructing a mutant library of floral spur through genetic engineering and other tools to further verify the contribution of floral spur variants to species diversity; (3) Investigating the molecular mechanisms of the formation and development of floral spur using a multi-omics approach.

Background & Aims: Paleobotanical studies show that the basic patterns of modern flora and vegetation in Yunnan originated in the Paleogene. These findings have greatly changed our previous understanding of the origin and evolution of modern vegetation and flora in Yunnan. In this article, the formation and evolution of the modern flora and vegetation of Yunnan will be described by linking geological events to palaeobotanical findings. The proposed formation and evolution of the flora and vegetation of Yunnan are detailed by combining paleobotanical results with the history of geological events since the Cenozoic period and the formation of southwestern monsoon climate.

Review Results: Flora and vegetation of Yunnan have a more ancient history than previously believed. Their formation and evolution have been clearly influenced by the geological events that have occurred since the Cenozoic period. The geographical patterns of Yunnan flora reveal that it had tropical origins and tropical-subtropical Tertiary flora of East Asia in the early stages but was influenced mainly by tropical Asian flora and north temperate flora in the later stages. The uplift of the Himalayan-Qinghai-Tibet Plateau and the accompanying geological events directly affected the evolution of the flora in Yunnan. The development and strengthening of the southwest monsoon climate were the main factors for the formation of vegetation, and specifically tropical rain forest vegetation, in Yunnan. The tropical flora and vegetation (except flora and savanna-like vegetation in hot dry valleys) displayed an increasing bias distribution pattern from northwest to southeast in Yunnan, which could be directly affected by the clockwise rotation and southeast displacement of the Simao-Lanping geological plate and the northward displacement of the plate in North Myanmar. The differentiation of the flora of the subtropical evergreen broad-leaved forests in Yunnan was closely related to the Himalayan uplift in the late Miocene. The formation and strengthening of the southwest monsoon climate by further uplift of Himalayas further promoted the divergence of the subtropical evergreen broad-leaved forests. The evolution of savanna vegetation in the hot dry valleys of Yunnan was believed to be closely related to the geological events such as deep valley formations and river captures caused by the Himalayan uplift, and some representative plant species in the savannas showed a likeness with savannas in India and Africa. The discontinuous remnant tropical deciduous forests (monsoon forest) in Yunnan were believed to be closely associated with the tropical deciduous forests in mainland Southeast Asia during a more seasonal or arid period in or before the Pliocene to Pleistocene caused by a stronger monsoon. The sclerophyllous evergreen broad-leaved forest dominated by Quercus species (Fagaceae) was unique, Tethys-associated remnant vegetation evolved from the former tropical-subtropical evergreen broad-leaved forests in Yunnan. The present tropical rain forest was proposed to be the most recent vegetation type in Yunnan following the formation and strengthening of the southwest monsoon climate.

Conclusion: Our research indicates that since the Oligocene, the evolution of flora and vegetation in Yunnan has been affected by the uplift of the Himalayas and the various accompanying geological events. The development and strengthening of southwest monsoon climate is the main factors for the formation of vegetation in Yunnan, especially for the occurrence of tropical rain forest.

Aim: Plant species names undergo revisions and changes in response to deepening taxonomic research deepens and new discoveries. These valuable diverse pieces of information are scattered across various publications, requires necessitate timely consolidation into the Species Catalogue of China, under the guidance of taxonomic experts. To address this requirement, it is necessary to create a dataset containing information on new taxa, name changes, and the latest statuses of plants in China.

Methods: We collected data on newly discovered taxa and name changes for Chinese higher plants by reviewing 228 journals and monographs. This compilation involved 403 articles from 62 journals and 1 monograph, focusing on the new taxa and nomenclatural changes of higher plants in 2022.

Results: In 2022, China reported a total of 318 new taxa of higher plants, encompassing 12 new genera, 286 new species, 3 new subspecies, 10 new varieties, and 7 new forms. The recently described species fall into bryophytes (15 taxa), pteridophytes (28 species), gymnosperm (1 species), and angiosperms (362 taxa). Notably, 155 newly identified species have been published with detailed evidence covering molecular systematics, chromosomes, micromorphology, genome, etc. Among these, 92 species were considered as threatened according to IUCN standards. The majority of these discoveries originate from five southwestern provinces in China, namely Yunnan, Sichuan, Xizang, Guangxi, and Guizhou. Medog, a county-level unit, recorded the highest number of newly discovered species in 2022. Furthermore, 122 new combinations and 11 replacement names were transferred from other species. Additionally, 103 names were designated as synonyms for 76 taxa, while 4 names were re-accepted.

Conclusion: In 2022, China witnessed a net increase of 346 new taxa of higher plants, accounting for 0.89% of the total Chinese plant species. Additionally, 240 names of higher plants underwent changes, accounting for 0.62% of the total. These changes represented 1.5% of all Chinese plant names modified in 2022, encompassing both species additions and nomenclature treatments.

Background: Tardigrades, commonly known as water bears, are microscopic invertebrates inhabiting diverse environments across marine, freshwater, and terrestrial ecosystems. As essential components of microfauna communities, they are renowned for their extraordinary extremotolerant adaptability and occupy multiple trophic levels within micro-food webs, indicating their significant ecological roles. Despite significant advancements made in understanding tardigrade biodiversity, identification methodologies, physiological and ecological traits recently, a comprehensive summaries remains lacking.

Bibliometric analyses & Perspective: Through bibliometric analyses of global tardigrade research over the past three decades, this review systematically summarizes the research progress in the new species discovery, identification methods, distribution characteristics, and ecological functions of tardigrades. The primary findings encompass: (1) Up to 2024, 1,488 documented tardigrade species inhabit a wide range of aquatic and terrestrial ecosystems, including moss, soil, marine environments, polar regions, and even anthropogenic habitats, with new species being continuously discovered. (2) Current identification methods remain predominantly morphology-based, while standardized molecular tools for phylogenetic resolution are critically underdeveloped, severely constrain taxonomic advancements. (3) We describe characteristics in aquatic ecosystems and unique adaptive mechanisms to global change stressors including climate warming and atmospheric nitrogen deposition. (4) Preliminary summaries reveal their ecological roles in micro-food webs through interactions with meiofauna and microbial communities.

Future prospects: We propose three critical research priorities: (1) Emphasizing the need to improve molecular biology research methods; (2) Exploring the distribution characteristics across different ecosystems on large spatial and long-term temporal scales; (3) Elucidating their position in micro-food webs and ecological functions.

Aims The Xijiang River, renowned for its rich freshwater biodiversity and endemism, presents an intriguing yet understudied ecosystem. This study aims to elucidate the species diversity patterns and underlying mechanisms maintaining macroinvertebrate communities in this mega river. Drawing from published literature and an extensive field survey conducted from 2021 to 2023, our objectives include compiling a comprehensive species checklist, identifying ecological drivers shaping community structure, and proposing conservation strategies.

Methods Macroinvertebrates were sampled from key water bodies within the Xijiang River, including main stream, tributaries, and plateau lakes from the years 2021 to 2023. One-way ANOVA was employed to analyze species diversity indices across different water bodies. PERMANOVA (permutational multivariate analysis of variance) and PCoA (principal co-ordinates analysis) were used to assess community structure variation, while canonical correspondence analysis and variation partitioning identify potential key factors influencing macroinvertebrate community organization.

Results A total of 704 species from 437 genera, representing 150 families across 10 orders and 5 phyla, were documented (combining 506 historical records with 352 findings from 2021 to 2023). The proportion of species endemic to China reaches as high as 26% of the total number of species. The average density and biomass in the present survey period were 437.53 ind./m² and 38.65 g/m², respectively. Tanypus sp., Glyptotendipes sp., Parafossarulus striatulus and Corbicula flumineaemerged as the dominant species. Species richness and diversity indices were highest in tributaries, followed by the main stream and lakes. Canonical correspondence analysis (CCA) revealed that a combination of environmental factors (e.g., altitude, conductivity and chemical oxygen demand with permanganate) and spatial factors jointly influenced macroinvertebrate community structure. Moreover, variation partitioning highlighted the dominance of environmental factors in tributaries and lakes, while spatial factors predominantly influenced main stream communities.

Conclusion This study presents the most comprehensive inventory of macroinvertebrates in the Xijiang River to date, showcasing its significance as a global biodiversity hotspot. Despite the region’s rich macroinvertebrate biodiversity, anthropogenic pressures have led to a decline in species richness. To safeguard and restore macroinvertebrate diversity and endemism, proactive conservation measures are imperative. Strategies should include curbing overfishing, regulating illicit mining practices, restoring natural hydrological patterns and riparian zones, mitigating point and non-point source pollution, and preventing the encroachment of non-native species.

Aims: Islands are an ideal platform for investigating ecological processes that shape biodiversity assemblages because of their distinct boundaries. An island’s physical characteristics, climate, human impacts and other drivers shape an island’s biodiversity pattern by affecting species selection, dispersal and other processes. However, our knowledge around how such drivers concurrently affect island plant richness remains limited, especially on oceanic islands with strong human impacts.

Methods: We complied a comprehensive plant distribution database across 92 islands in the Zhoushan Archipelago, the largest archipelago in China. We then used general linear regression and generalized linear model (pseudo-Poisson distribution) to evaluate the effects of island’s physical characteristics (area, isolation and shape index), climate (temperature, precipitation and seasonality) and human impacts on the richness of native seed plants, and across different growth forms and leaf phenology types. We also used beta regression to evaluate the influence of environmental variables on the ratio of evergreen broad-leaved woody plant richness to all broad-leaved woody plant richness.

Results: In total, there were 1,158 seed plant species, including 108 tree species, 318 shrub species and 732 herbaceous species. The strongest driver of plant richness was island area, followed by isolation and annual precipitation. Tree richness decreased with increasing isolation, and this trend was most notable among trees than among shrubs and herbs. The richness of evergreen and deciduous broad-leaved woody plants was overall consistent with that of all plant richness. We found that annual precipitation had a stronger effect on evergreen broad-leaved woody than on deciduous, but the ratio of evergreen woody was only strongly affected by temperature seasonality.

Conclusion: We found that island area, annual precipitation, and temperature seasonality are the primary determinants in shaping the richness patterns of all plants and different functional groups (growth forms and leaf phenology types) across the 92 islands of China’s Zhoushan Archipelago.

Aims Urban parks are very rich in biodiversity and play an important role in conservation. Bryophytes are an important component of this biodiversity, but due to their small size and the challenges associated with their identification, they tend to be overlooked. Research on these nonvascular plants is therefore comparatively lacking. We aim to strengthen the comprehensive understanding of urban biodiversity by including robust information on bryophytes and promote urban conservation.

Methods Based on the literature data and ecological survey data, we integrated the list of bryophytes from 35 sample points in central urban areas and suburb areas of Shanghai. We applied cluster analysis to group the parks and compared the similarity of bryophytes in urban and suburban areas. Canonical correspondence analysis (CCA) and hierarchical partitioning methods were used to quantitatively study the relationship between environmental factors and the distribution of bryophyte species diversity.

Results The results showed that 164 species of bryophytes belonging to 74 genera in 34 families lived in 35 parks. This grouping included 9 species belonging to 8 genera in 7 families of liverworts and 155 species belonging to 66 genera in 27 families of mosses. Twelve of these species are endemic to China and four species are considered Near Threatened. According to the results of cluster analysis, these 35 parks can be divided into two groups, distinguished by population density, distance to the city center, distance to the primary highway, and park area. The Jaccard similarity coefficients of families, genera and species in urban and suburban areas were 0.94, 0.89, and 0.30, respectively, indicating that the species composition of the two areas had their own characteristics. The hierarchical partitioning method showed that the environmental factors that explained the distribution pattern of bryophyte diversity in urban parks were, from high to low, DOP (population density), AGI (age of the park), DIS2 (distance to the city center), DIS1 (distance to the primary highway), LPT (proportion of lake area to park area), FPT (proportion of forest area to park area), and AREA (park area).

Conclusion On the whole, the species diversity of bryophytes in Shanghai’s urban parks is rich and there are some differences in the species composition between urban parks and suburban parks. Both regions play an important role in the conservation of bryophyte diversity. We revealed the effects of different environmental factors such as DOP, DIS1 and FPT on the distribution pattern of bryophyte diversity in urban parks, in order to strengthen the comprehensive understanding of urban bryophyte diversity and promote the protection of urban ecosystems and bryophyte diversity.

Aims: The Nanling Mountains are a prominent mountain range serving as a natural geographical boundary in southern China and are recognized as one of the world’s biodiversity hotspots. However, past studies on species richness in the Nanling Mountains have primarily focused on specific taxa and at localized scales. This has led to a dearth of research concerning the comprehensive spatial patterns of fauna across the entire Nanling region. The objective of this study is to identify the large-scale patterns and drivers of mammalian and avian species richness and offer insights to support the conservation of Nanling’s biodiversity.

Methods: Using geographical data for 123 mammal species and 524 bird species, we investigated the distribution of species richness within the Nanling Mountains. Additionally, we employed path analysis (PA) and spatial error models to disentangle the impacts of various predictors (climate, productivity, human activity, habitat heterogeneity, and elevation) on species richness.

Results: The hotspot of mammal species richness was in the southwestern part of the Nanling region, with a decline in richness observed from west to east. Avian species richness was highest in the southeast of Nanling, gradually decreasing from southeast to northwest. The path analysis and spatial error models demonstrated that temperature- related factors exerted the most significant influence on the spatial distribution patterns of species richness for both mammalian and avian species. Two temperature-related factors had contrasting effects on species richness. The average annual temperature had a negative impact on mammals but a positive impact on birds; however, the annual range of temperature had a positive impact on mammals but a negative impact on birds.

Conclusions: Our findings highlight the contrasting spatial distribution patterns of mammalian and avian species richness in the Nanling Mountains. The differential impact of average annual temperature and the annual range of temperature on birds and mammals may arise from physiological adaptability and behavioral strategies.

There are 94 cetacean species worldwide, which represent one of the most enigmatic and threatened groups among mammals. Throughout their transition from land to water, cetaceans have evolved numerous morphological, life history, and ecological traits that enhance their adaptability to aquatic environments. However, a comprehensive global database of cetacean ecological characteristics is still lacking. Our study systematically reviews books, literature, and other data resources to collect and compile cetacean characteristic data, including 15 morphological traits, 12 life-history traits, and 11 ecological traits. Based on the collected data, we quantified the trait completeness for each species and employed phylogenetic linear regression model to explore the factors influencing the ratio of data completeness. The completeness of the morphological traits ranges from 72.15% to 100.00%, life history traits from 17.72% to 100.00%, and ecological traits from 25.32% to 100.00%. The regression analyses showed that species described earlier and inhabiting nearshore habitats tend to exhibit higher data completeness. This dataset provides essential foundational information for research in cetacean ecology, conservation biology, and evolutionary biology. It also serves as a significant platform for data sharing and communication in regional and global cetacean conservation efforts.