期刊
INTERNATIONAL REVIEW OF HYDROBIOLOGY
卷 97, 期 3, 页码 200-214出版社
WILEY-BLACKWELL
DOI: 10.1002/iroh.201111489
关键词
climate change; north subtropical monsoon; ENSO; water temperature; water flow; benthic macroinvertebrate; biodiversity
资金
- National Natural Science Foundation of China [40911130508]
Ecological effects of climate change on terrestrial and marine ecosystems are increasingly apparent but evidence from freshwater is scarce, particularly in Asia. Using data from two subtropical Central China streams, we predicted the changes of some benthic macroinvertebrate communities under various climatic scenarios. Our results show that the average annual air temperature, in the study watershed, increased significantly (P < 0.05) by 0.6 degrees C over the last 30 years (19782007), whereas the average annual water flow declined by 30.9 m3 s1. Based on the winter sampling of benthic macroinvertebrates at four stream locations over last six years, we observed that macroinvertebrate abundance and Margalef diversity dropped with increasing water temperatures or decreasing smoothed sea surface temperatures (SSST). The winter macroinvertebrate abundance and biodiversity declined by 11.1% and 6.8% for every 1 degrees C water temperature rise. In contrast, increases in future SSST by one unit would increase winter macroinvertebrate abundance and biodiversity by 38.2% and 16.0%, respectively. Although many dominant taxa were predicted to persist when water temperatures increase by 1 degrees C, several scarce taxa, e.g., Orthocladius clarkei and Hippeutis umbilicalis, could be at a level of potential local extinction. Our identification of these links, between climate change and stream macroinvertebrate communities, has wide implications for the conservation of mountain stream ecosystems in the upper Yangtze River under scenarios of climate change. ((c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据