Biodiversity and distribution patterns of Triplophysa species in the northeastern margin of the Tibetan Plateau

doi:10.17520/biods.2016259

Abstract

Abstract:

The northeastern region of the Tibetan Plateau is a region with high genetic diversity for endemic species. To comprehensively document the patterns of diversity and the distribution of Triplophysa species in this area, we probed the allocation of Triplophysa species using field surveys from 2012 to 2015. We found that areal shrinkage and fragmentation had occurred in some species. Species richness in this area was uneven. But the middle to upper reaches of the Heihe River, Datong River and Taohe River were uncommon areas with high species-richness and high biodiversity. Along altitudinal gradients, species richness presented a unimodal pattern and peaked at mid-elevations (2,200-2,400 m), which was the transition area between two community zones with high species richness. The unimodal pattern fit Lomolino’s prediction regarding species density and altitude. Biodiversity indices displayed uniform patterns with species richness and elevation. Consistent with most studies, the unimodal shape may be the universal pattern of biodiversity distribution along elevational gradients in the Tibetan Plateau and its adjacent highlands. The intermediate elevational regions should be conservation priorities.

http://jtp.cnki.net/bilingual/detail/html/SWDY201701007

Key words: Tibetan Plateau, Triplophysa, biodiversity, distribution pattern, elevational gradient, conservation

Chenguang Feng, Chao Tong, Renyi Zhang, Guogang Li, Kunyuan Wanghe, Yongtao Tang, Cunfang Zhang, Kai Zhao. Biodiversity and distribution patterns of Triplophysa species in the northeastern margin of the Tibetan Plateau[J]. Biodiv Sci, 2017, 25(1): 53-61.

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URL: https://www.biodiversity-science.net/EN/10.17520/biods.2016259

https://www.biodiversity-science.net/EN/Y2017/V25/I1/53

Figures/Tables 6

References 31

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水系 Basin	水系单元 Basin unit	物种丰富度 Species richness	Shannon-Wiener指数 Shannon-Wiener index	Pielou指数 Pielou index	Simpson指数 Simpson index
河西 Hexi rivers	疏勒河干流 Shule River	4	0.690 ± 0.114	0.727 ± 0.074	0.553 ± 0.047
	疏勒河附属水体 Tributaries of Shule River	2	0.560 ± 0.217	0.810 ± 0.312	0.556 ± 0.250
	黑河干流 Heihe River	6	1.136 ± 0.213	0.842 ± 0.078	0.350 ± 0.064
	黑河附属水体—大马营河 Damaying-tributary of Heihe River	4	1.100	0.790	0.346
	黑河附属水体—其他 Other tributaries of Heihe River	2	0.320 ± 0.157	0.463 ± 0.229	0.806 ± 0.117
	石羊河干流 Shiyang River	4	1.035 ± 0.093	0.893 ± 0.121	0.364 ± 0.035
	石羊河附属水体 Tributaries of Shiyang River	2	0.640 ± 0.044	0.923 ± 0.064	0.545 ± 0.040
	小计 Subtotal	7
青海湖 Lake Qinghai	甘子河 Ganzi River	2	0.620 ± 0.028	0.890 ± 0.042	0.539 ± 0.054
	入湖河流 Tributaries of Qinghai Lake	2	0.673 ± 0.029	0.973 ± 0.046	0.418 ± 0.075
	小计 Subtotal	4
黄河上游 Upper reaches of Yellow River	洮河 Taohe River	8	1.198 ± 0.246	0.848 ± 0.122	0.337 ± 0.072
	大夏河 Daxia River	4	0.573 ± 0.107	0.633 ± 0.261	0.589 ± 0.229
	庄浪河 Zhuanglang River	4	0.570	0.410	0.723
	大通河 Datong River	6	1.390 ± 0.014	0.820 ± 0.057	0.293 ± 0.019
	湟水河 Huangshui River	7	1.060 ± 0.159	0.753 ± 0.130	0.368 ± 0.103
	贵德至玛曲段 Guide-Maqu section	4	0.777 ± 0.168	0.950 ± 0.053	0.417 ± 0.086
	玛曲段 Maqu section	6	0.645 ± 0.134	0.515 ± 0.021	0.674 ± 0.049
	玛曲至玛多段 Maqu-Maduo section	3	0.530 ± 0.382	0.545 ± 0.247	0.667 ± 0.269
	小计 Subtotal	12
渭河 Weihe River	渭河上游 Upper reaches of Weihe River	4	1.010 ± 0.113	0.790 ± 0.098	0.419 ± 0.045
嘉陵江 Jialing River	白龙江 Bailong River	4	0.845 ± 0.247	0.950 ± 0.028	0.446 ± 0.104
	嘉陵江上游 Upper reaches of Jialing River	3	0.990	0.900	0.392
	小计 Subtotal	5

水系 Basin	水系单元 Basin unit	物种丰富度 Species richness	Shannon-Wiener指数 Shannon-Wiener index	Pielou指数 Pielou index	Simpson指数 Simpson index
河西 Hexi rivers	疏勒河干流 Shule River	4	0.690 ± 0.114	0.727 ± 0.074	0.553 ± 0.047
	疏勒河附属水体 Tributaries of Shule River	2	0.560 ± 0.217	0.810 ± 0.312	0.556 ± 0.250
	黑河干流 Heihe River	6	1.136 ± 0.213	0.842 ± 0.078	0.350 ± 0.064
	黑河附属水体—大马营河 Damaying-tributary of Heihe River	4	1.100	0.790	0.346
	黑河附属水体—其他 Other tributaries of Heihe River	2	0.320 ± 0.157	0.463 ± 0.229	0.806 ± 0.117
	石羊河干流 Shiyang River	4	1.035 ± 0.093	0.893 ± 0.121	0.364 ± 0.035
	石羊河附属水体 Tributaries of Shiyang River	2	0.640 ± 0.044	0.923 ± 0.064	0.545 ± 0.040
	小计 Subtotal	7
青海湖 Lake Qinghai	甘子河 Ganzi River	2	0.620 ± 0.028	0.890 ± 0.042	0.539 ± 0.054
	入湖河流 Tributaries of Qinghai Lake	2	0.673 ± 0.029	0.973 ± 0.046	0.418 ± 0.075
	小计 Subtotal	4
黄河上游 Upper reaches of Yellow River	洮河 Taohe River	8	1.198 ± 0.246	0.848 ± 0.122	0.337 ± 0.072
	大夏河 Daxia River	4	0.573 ± 0.107	0.633 ± 0.261	0.589 ± 0.229
	庄浪河 Zhuanglang River	4	0.570	0.410	0.723
	大通河 Datong River	6	1.390 ± 0.014	0.820 ± 0.057	0.293 ± 0.019
	湟水河 Huangshui River	7	1.060 ± 0.159	0.753 ± 0.130	0.368 ± 0.103
	贵德至玛曲段 Guide-Maqu section	4	0.777 ± 0.168	0.950 ± 0.053	0.417 ± 0.086
	玛曲段 Maqu section	6	0.645 ± 0.134	0.515 ± 0.021	0.674 ± 0.049
	玛曲至玛多段 Maqu-Maduo section	3	0.530 ± 0.382	0.545 ± 0.247	0.667 ± 0.269
	小计 Subtotal	12
渭河 Weihe River	渭河上游 Upper reaches of Weihe River	4	1.010 ± 0.113	0.790 ± 0.098	0.419 ± 0.045
嘉陵江 Jialing River	白龙江 Bailong River	4	0.845 ± 0.247	0.950 ± 0.028	0.446 ± 0.104
	嘉陵江上游 Upper reaches of Jialing River	3	0.990	0.900	0.392
	小计 Subtotal	5

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