期刊
ECOLOGICAL INDICATORS
卷 61, 期 -, 页码 258-267出版社
ELSEVIER
DOI: 10.1016/j.ecolind.2015.09.025
关键词
Nutrient thresholds; Eutrophication; Phytoplankton community; TITAN; Change point; Lake ecosystems
资金
- China Scholarship Council [201406010162]
- National Major Science and Technology Program for Water Pollution Control and Treatment [2012ZX07501002-06]
Excessive nutrient loads resulted in cascading trophic effects and ecosystem responses. Aims of this study were to determine if the thresholds in nutrient gradient related to phytoplankton community composition could be identified in eutrophic lake, and further to analyze the change of phytoplankton assemblage along the nutrient concentration based on Threshold Indicator Taxa ANalysis (TITAN). The results presented the significant community thresholds estimate for negative taxa declining at 1.650 mg/L TN and 131.5 mu g/L TP, as well as simultaneously increasing for positive taxa at 1.665 mg/L TN and 151.5 mu g/L TP along nutrient enrichment gradient. However, there was unremarkable change point determined for TN:TP ratios in Lake Dianchi. Elevated TN and TP altered the phytoplankton assemblage, even may induce the fade of algal blooms across the threshold in the hypertrophic lake. The findings could provide implications for deeply deciphering abrupt transitions for phytoplankton assemblage and developing nutrient tactics to protect the lake ecosystems. (C) 2015 Elsevier Ltd. All rights reserved.
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