Discrepancy in the responses of diatom diversity to indirect and direct human activities in lakes of the southeastern Tibetan Plateau, China

	Discrepancy in the responses of diatom diversity to indirect and direct human activities in lakes of the southeastern Tibetan Plateau, China
	Wang, Rong; Hu, Zhujun; Wang, Qian; Xu, Min; Zheng, Wenxiu; Zhang, Ke; Yang, Xiangdong
刊名	ANTHROPOCENE
	2020
卷号	30
英文摘要	Both global warming and human impacts are inimical to the maintenance of biodiversity across the planet. Although there is some consensus regarding the probable responses of biodiversity changes under different global change scenarios, the factors controlling biodiversity on regional scales are unclear. Using surveys of lake-bed surface sediments and an analysis of diatoms from six lake cores across 116 lakes in the southeastern Tibetan Plateau of China, we investigated (i) changes in diatom richness and (ii) beta diversity and its components at various spatial and temporal scales. beta diversity partitioning revealed that the most important factor affecting changes in diatom communities was species turnover across both spatial and temporal scales. This finding indicates that conservation planning requires a regional approach that focuses on multiple lake systems. Temporal changes in the trend of beta diversity were shown to result from changes in nestedness components. The results showed that climate warming and indirect human impacts caused the decline of species nestedness, thereby increasing biodiversity, while the intensification of direct human activities caused species nestedness to rise, resulting in concomitant loss of biodiversity. Since nestedness is often related to ordered species gain/loss dynamics, the results suggest that species gain slows down in lakes affected indirectly by human activities, while species loss accelerates in lakes subjected to direct human impacts. Thus, we predict that species richness will continue to decline across this vast region in the future. (C) 2020 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/19873]
专题	中国科学院南京地理与湖泊研究所
推荐引用方式 GB/T 7714	Wang, Rong,Hu, Zhujun,Wang, Qian,et al. Discrepancy in the responses of diatom diversity to indirect and direct human activities in lakes of the southeastern Tibetan Plateau, China[J]. ANTHROPOCENE,2020,30.
APA	Wang, Rong.,Hu, Zhujun.,Wang, Qian.,Xu, Min.,Zheng, Wenxiu.,...&Yang, Xiangdong.(2020).Discrepancy in the responses of diatom diversity to indirect and direct human activities in lakes of the southeastern Tibetan Plateau, China.ANTHROPOCENE,30.
MLA	Wang, Rong,et al."Discrepancy in the responses of diatom diversity to indirect and direct human activities in lakes of the southeastern Tibetan Plateau, China".ANTHROPOCENE 30(2020).