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

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 sen...

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Autores principales:	Zhaoxi Li, Yang Gao, Shuoyue Wang, Yao Lu, Kun Sun, Junjie Jia, Yafeng Wang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Qinghai-Tibet Plateau Phytoplankton community Salinity Nutrients Nitrogen Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/f2caa93b79744f0ca36129190cdf0ccd
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spelling	oai:doaj.org-article:f2caa93b79744f0ca36129190cdf0ccd2021-12-01T04:54:27ZPhytoplankton community response to nutrients along lake salinity and altitude gradients on the Qinghai-Tibet Plateau1470-160X10.1016/j.ecolind.2021.107848https://doaj.org/article/f2caa93b79744f0ca36129190cdf0ccd2021-09-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21005136https://doaj.org/toc/1470-160XThe 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 low-altitude 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‰) while aggravating those in saltwater lakes (1‰ < salinity < 35‰). 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.Zhaoxi LiYang GaoShuoyue WangYao LuKun SunJunjie JiaYafeng WangElsevierarticleQinghai-Tibet PlateauPhytoplankton communitySalinityNutrientsNitrogenEcologyQH540-549.5ENEcological Indicators, Vol 128, Iss , Pp 107848- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Qinghai-Tibet Plateau Phytoplankton community Salinity Nutrients Nitrogen Ecology QH540-549.5
spellingShingle	Qinghai-Tibet Plateau Phytoplankton community Salinity Nutrients Nitrogen Ecology QH540-549.5 Zhaoxi Li Yang Gao Shuoyue Wang Yao Lu Kun Sun Junjie Jia Yafeng Wang Phytoplankton community response to nutrients along lake salinity and altitude gradients on the Qinghai-Tibet Plateau
description	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 low-altitude 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‰) while aggravating those in saltwater lakes (1‰ < salinity < 35‰). 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.
format	article
author	Zhaoxi Li Yang Gao Shuoyue Wang Yao Lu Kun Sun Junjie Jia Yafeng Wang
author_facet	Zhaoxi Li Yang Gao Shuoyue Wang Yao Lu Kun Sun Junjie Jia Yafeng Wang
author_sort	Zhaoxi Li
title	Phytoplankton community response to nutrients along lake salinity and altitude gradients on the Qinghai-Tibet Plateau
title_short	Phytoplankton community response to nutrients along lake salinity and altitude gradients on the Qinghai-Tibet Plateau
title_full	Phytoplankton community response to nutrients along lake salinity and altitude gradients on the Qinghai-Tibet Plateau
title_fullStr	Phytoplankton community response to nutrients along lake salinity and altitude gradients on the Qinghai-Tibet Plateau
title_full_unstemmed	Phytoplankton community response to nutrients along lake salinity and altitude gradients on the Qinghai-Tibet Plateau
title_sort	phytoplankton community response to nutrients along lake salinity and altitude gradients on the qinghai-tibet plateau
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/f2caa93b79744f0ca36129190cdf0ccd
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Phytoplankton community response to nutrients along lake salinity and altitude gradients on the Qinghai-Tibet Plateau

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