干旱区生态环境知识资源中心(Arid): The impact of climate change on a Mediterranean shallow lake: insights based on catchment and lake modelling

Arid

DOI	10.1007/s10113-020-01641-6
	The impact of climate change on a Mediterranean shallow lake: insights based on catchment and lake modelling
	Coppens, Jan 1; Trolle, Dennis 2,3; Jeppesen, Erik 1,2,3,4; Beklioglu, Meryem 1,4
通讯作者	Coppens, Jan
来源期刊	REGIONAL ENVIRONMENTAL CHANGE
ISSN	1436-3798
EISSN	1436-378X
出版年	2020
卷号	20 期号:2
英文摘要	Shallow lakes in the semi-arid climate zone of the Mediterranean are sensitive to drought due to the low annual precipitation and high evaporation. Changes in precipitation and temperature as projected by climate change scenarios will have an effect on the hydrology of these shallow lakes with secondary effects on nutrient dynamics and ecological state. In this study, we used a combined modelling approach that included the catchment model Soil and Water Assessment Tool (SWAT) and the lake model PCLake to study the possible effects of several climate scenarios on a shallow lake in semi-arid central Anatolia, Turkey. Our results show that lower precipitation and higher temperatures may reduce inflow rates and water levels drastically. Diffuse nutrient loading depended highly on precipitation and thus decreased as well. The lake model predicts an interaction between external nutrient loading and water levels. Low water levels benefited submerged macrophytes if nutrient concentrations were low, but low inflow rates and high evaporation during dry periods increased in-lake nutrient concentrations and chlorophyll-a. Cyanobacteria biomass was also higher in the drier and warmer scenarios. Overall, the results show that lower hydraulic loads and reduced flushing rates as a result of drier and warmer conditions lead to lower water levels and higher in-lake nutrient concentrations unless nutrient loading decreased as well. This implies that catchment-scale nutrient management is essential to maintain low nutrient concentrations in the lakes with increasing temperature and decreasing precipitation in a dry climate.
英文关键词	Nutrients Arid region Water level fluctuation Eutrophication PCLake SWAT
类型	Article
语种	英语
国家	Turkey ; Denmark ; Peoples R China
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000534252200001
WOS关键词	WATER-QUALITY ; ZOOPLANKTON COMMUNITIES ; LEVEL ; PHOSPHORUS ; PCLAKE ; STATE ; PHYTOPLANKTON ; SIMULATIONS ; NITROGEN ; PLANTS
WOS类目	Environmental Sciences ; Environmental Studies
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319141
作者单位	1.Middle East Tech Univ, Limnol Lab, Dept Biol, Dumlupinar Bulvari 1, TR-06800 Ankara, Turkey; 2.Aarhus Univ, Dept Biosci, Aarhus, Denmark; 3.UCAS, Sino Danish Ctr Educ & Res, Beijing, Peoples R China; 4.Middle East Tech Univ, Ecosyst Res & Implementat Ctr, Ankara, Turkey
推荐引用方式 GB/T 7714	Coppens, Jan,Trolle, Dennis,Jeppesen, Erik,et al. The impact of climate change on a Mediterranean shallow lake: insights based on catchment and lake modelling[J],2020,20(2).
APA	Coppens, Jan,Trolle, Dennis,Jeppesen, Erik,&Beklioglu, Meryem.(2020).The impact of climate change on a Mediterranean shallow lake: insights based on catchment and lake modelling.REGIONAL ENVIRONMENTAL CHANGE,20(2).
MLA	Coppens, Jan,et al."The impact of climate change on a Mediterranean shallow lake: insights based on catchment and lake modelling".REGIONAL ENVIRONMENTAL CHANGE 20.2(2020).