4.7 Article

Phytoplankton community response to nutrients along lake salinity and altitude gradients on the Qinghai-Tibet Plateau

期刊

ECOLOGICAL INDICATORS
卷 128, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.ecolind.2021.107848

关键词

Qinghai-Tibet Plateau; Phytoplankton community; Salinity; Nutrients; Nitrogen

资金

  1. National Nature Science Foundation of China [41861134038, 41922003]
  2. Second Tibetan Plateau Scientific Expedition and Research Program [2019QZKK060602]

向作者/读者索取更多资源

The Qinghai-Tibet Plateau, the highest and largest plateau in the world, has unique phytoplankton species that are highly sensitive to environmental changes. Research findings indicate that salinity is a critical controlling factor for all phytoplankton communities, and altitude is an important driver for variation in phytoplankton size and response to nutrients.
The Qinghai-Tibet Plateau is the highest and largest plateau in the world and is composed of the world's greatest clustering of plateau lake systems. Given their extreme environmental conditions and simplistic trophic structures, certain phytoplankton species endemic to these lakes are extremely sensitive to changes in nutrients. Understanding the different response of phytoplankton communities to nutrients along different environmental gradients will help us devise appropriate ecological protection measures specific to individual lake conditions. This study investigated characteristics of phytoplankton communities and associated environmental factors in 20 alpine lakes, ranging in altitude from 2500 m to 4500 m. Results showed that salinity was the critical controlling factor in all phytoplankton communities, while also hindering phytoplankton abundance and biomass without changing the dominant species of algae. Results also showed that altitude was an important driving factor for variation in individual phytoplankton size, which was endemically smaller than phytoplankton size in lowaltitude lakes. Moreover, the phytoplankton community response to nutrients differed under different salinity gradients. In addition, water nitrogen (N) concentrations can alleviate salinity limitations on dominant phytoplankton species in saline lakes (salinity 35%o) while aggravating those in saltwater lakes (1%o < salinity < 35%o). It is imperative to improve our understanding of climate change and anthropogenic impacts on carbon (C) fixation capacities of plateau lake systems into the future.

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。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据