Individual woody species-area relationship in a deciduous broad-leaved forest in Baotianman, Henan Province

doi:10.17520/biods.2015031

Abstract

Abstract:

The individual species-area relationship (ISAR) can be used to estimate the effects of individual species (accumulator, repeller, or neutral) on neighboring biodiversity at different spatial scales. The effects of individual species with different sizes (diameter at breast height classes, DBH classes) on neighboring species diversity are still an unresolved question although several papers have addressed this question by using the ISAR. In this study, we compared ISARs of nine types (all to all, all to adult, all to young, adult to all, adult to adult, adult to young, young to all, young to adult and young to young); “young to adult” represents that ISAR of young individuals of target species to adult individuals of neighboring species in a 1 ha deciduous broad-leaved forest in Baotianman National Nature Reserve, Henan Province. We tested the following hypotheses: (1) the adult individuals (DBH ≥ 10 cm) of target species have greater influence on the biodiversity of their neighbors than the young (DBH < 10 cm); (2) the individuals of the same species or the same size class have greater influence on neighboring young tree diversity than adult tree diversity; (3) most species are neutral in the Baotianman deciduous broad-leaved forest. The results showed that the effects of tree species with different sizes on neighboring tree diversity are scale-based and also affected by the size of the neighbor tree. The results supported the hypothesis that individuals of the same species or the same size have greater influence on neighboring young tree diversity than on neighboring adult tree diversity; but did not support that the adult individuals of focal species have greater influence on neighboring tree diversity than young individuals. The results also indicated that most species are neutral at spatial scales of 1-10 m in the Baotianman forest; multiple accumulator or repeller species were detected at some scales. The results will contribute to our understanding of the role of specific species on biodiversity and community maintenance mechanism.

Key words: individual species-area relationship, neutral species, biodiversity, DBH classes, forest dynamics plot, Baotianman National Nature Reserve

Manyu Yan, Xiaojun Du, Aihua Zhao, Mingchun Peng. Individual woody species-area relationship in a deciduous broad-leaved forest in Baotianman, Henan Province[J]. Biodiv Sci, 2015, 23(5): 630-640.

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URL: https://www.biodiversity-science.net/EN/10.17520/biods.2015031

https://www.biodiversity-science.net/EN/Y2015/V23/I5/630

Figures/Tables 5

Fig. 1 DBH classes distribution (top) and spatial distribution (down) of woody species for all individual, adult tree (individuals ≥ 10, DBH ≥ 10 cm), young tree (individuals ≥ 30, DBH < 10 cm) in the 1 ha Baotianman Forest Dynamics Plot

Fig. 2 The individual species-area relationship (ISAR) of nine types ((a) all to all, (b) all to adult, (c) all to young, (d) adult to all, (e) adult to adult, (f) adult to young, (g) young to all, (h) young to adult, and (i) young to young). Black line: an example species of Acer ceriferum.

Fig. 3 Species number of significant diversity accumulator, neutral and repeller at different spatial scales from individual species-area relationships of nine types ((a) all to all, (b) all to adult, (c) all to young, (d) adult to all, (e) adult to adult, (f) adult to young, (g) young to all, (h) young to adult, and (i) young to young).

Fig. 4 Values of ratio for individual species-area relationship (ISAR) of nine types (all to all, all to adult, all to young, adult to all, adult to adult, adult to young, young to all, young to adult, and young to young) (A) (mean ± SE) and their ranges (the difference between maximum and minimum of ISAR ratio) (B) at different spatial scales.

Table 1 Comparisons on the mean values of individual species-area relationship (ISAR) ratios of 9 types at different spatial scales (Scheffe method). The same letters mean no significant difference, different letters mean significant difference (P < 0.05).

类型 Type	尺度 Scales (m)
类型 Type	1	2	3	4	5	6	7	8	9	10
全部树对全部树 All to all	0.020^ab	0.047^a	0.071^ab	0.093^a	0.120^b	0.137^b	0.157^b	0.175^b	0.191^b	0.206^b
全部树对大树 All to adult	0.003^e	0.010^e	0.021^e	0.033^c	0.045^d	0.057^e	0.069^e	0.082^d	0.095^d	0.108^d
全部树对小树 All to young	0.006^de	0.022^d	0.043^cd	0.065^b	0.086^c	0.106^c	0.126^c	0.144^c	0.162^c	0.180^c
大树对全部树 Adult to all	0.006^de	0.024^cd	0.055^bc	0.089^a	0.124^ab	0.159^ab	0.195^a	0.228^a	0.264^a	0.296^a
大树对大树 Adult to adult	0.006^de	0.018^de	0.030^de	0.044^bc	0.063^cd	0.080^de	0.100^d	0.123^c	0.143^c	0.160^c
大树对小树 Adult to young	0.015^bc	0.045^ab	0.072^ab	0.097^a	0.136^ab	0.162^a	0.199^a	0.231^a	0.264^a	0.298^a
小树对全部树 Young to all	0.022^a	0.033^bc	0.064^ab	0.098^a	0.133^ab	0.166^a	0.199^a	0.231^a	0.263^a	0.295^a
小树对大树 Young to adult	0.009^cd	0.023^cd	0.038^d	0.051^b	0.072^c	0.087^d	0.106^d	0.127^c	0.164^c	0.167^c
小树对小树 Young to young	0.022^a	0.050^a	0.078^a	0.106^a	0.141^a	0.168^a	0.200^a	0.235^a	0.264^a	0.295^a

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