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DOI	10.1007/s10750-018-3583-2
	Extreme drought favors potential mixotrophic organisms in tropical semi-arid reservoirs
	Costa, Mariana R. A.1; Menezes, Rosemberg F.2,3; Sarmento, Hugo 4; Attayde, Jose L.2; Sternberg, Leonel da S. L.5; Becker, Vanessa 1,6
通讯作者	Costa, Mariana R. A.
来源期刊	HYDROBIOLOGIA
ISSN	0018-8158
EISSN	1573-5117
出版年	2019
卷号	831 期号:1 页码:43-54
英文摘要	Climate change is affecting the global hydrological cycle and is causing drastic changes in the freshwater hydrological regime. Water level (WL) reduction caused by drought tends to increase the concentration of nutrients favoring the dominance of cyanobacteria. We hypothesized that the WL reduction favors the dominance of cyanobacteria at regular dry conditions, but at extremely dry events mixotrophic algae would thrive because of light limitation due to increased resuspension of sediments on the water column. To test our hypothesis, we compared phytoplankton traits and water quality variables between two sets of reservoirs located in two watersheds with contrasting precipitation regimes within the Brazilian semi-arid. The reservoirs were compared in a dry period and in an extremely dry period to evaluate the response of the variables to an extreme drought. Drought intensification decreased the reservoirs' WL and water transparency and increased the total phosphorous. Cyanobacteria dominated in the dry period, and the contribution of mixotrophic algae increased in the extremely dry period. Thus, phytoplankton with mixotrophic potential was favored by the extreme drought. This result suggests that this can be one possible scenario for phytoplankton communities in reservoirs of semi-arid regions if extreme droughts become more frequent because of climate change.
英文关键词	Climate change Water level reduction Water quality Phytoplankton Functional traits Cyanobacteria
类型	Article
语种	英语
国家	Brazil ; USA
收录类别	SCI-E
WOS记录号	WOS:000458372800005
WOS关键词	DIFFERENT CLIMATIC CONDITIONS ; WATER-LEVEL ; PHYTOPLANKTON DYNAMICS ; PLANKTON DYNAMICS ; COMMUNITY ECOLOGY ; LAKES ; PROTISTS ; IMPACTS ; BACTERIOPLANKTON ; PERSPECTIVE
WOS类目	Marine & Freshwater Biology
WOS研究方向	Marine & Freshwater Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216160
作者单位	1.Univ Fed Rio Grande Norte UFRN, Programa Posgrad Ecol, Natal, RN, Brazil; 2.Univ Fed Rio Grande Norte UFRN, Dept Ecol, Natal, RN, Brazil; 3.Univ Fed Paraiba UFPB, Dept Fitotecnia & Ciencias Ambientais, Campus 2, Areia, PB, Brazil; 4.Univ Fed Sao Carlos UFSCar, Dept Hidrobiol, Sao Carlos, SP, Brazil; 5.Univ Miami, Dept Biol, Coral Gables, FL 33124 USA; 6.Univ Fed Rio Grande Norte UFRN, Dept Engn Civil, Natal, RN, Brazil
推荐引用方式 GB/T 7714	Costa, Mariana R. A.,Menezes, Rosemberg F.,Sarmento, Hugo,et al. Extreme drought favors potential mixotrophic organisms in tropical semi-arid reservoirs[J],2019,831(1):43-54.
APA	Costa, Mariana R. A.,Menezes, Rosemberg F.,Sarmento, Hugo,Attayde, Jose L.,Sternberg, Leonel da S. L.,&Becker, Vanessa.(2019).Extreme drought favors potential mixotrophic organisms in tropical semi-arid reservoirs.HYDROBIOLOGIA,831(1),43-54.
MLA	Costa, Mariana R. A.,et al."Extreme drought favors potential mixotrophic organisms in tropical semi-arid reservoirs".HYDROBIOLOGIA 831.1(2019):43-54.