气候变化领域集成服务门户(CCPortal): Macroinvertebrate communities reveal regional asymmetries in riverine ecosystems along a gradient of water availability in hydrologically distinct years

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DOI	10.1007/s00027-023-01037-8
	Macroinvertebrate communities reveal regional asymmetries in riverine ecosystems along a gradient of water availability in hydrologically distinct years
	Santos, Joana Isabel; Silva, Carlos; Goncalves, Fernando J. M.; Pereira, Joana Luisa; Castro, Bruno Branco
发表日期	2024
ISSN	1015-1621
EISSN	1420-9055
起始页码	86
结束页码	1
卷号	86 期号:1
英文摘要	Climate change has been increasing the frequency and severity of drought periods. There is a need to understand how this water scarcity affects aquatic communities. The main aim of this work was to compare the macroinvertebrate communities and their bioindicator value (ecological status sensu the Water Framework Directive) in three Regions [northeast (N), central (C) and south (S)] of Portugal along a water availability and climate gradient, in two consecutive years that reflect hydrologically distinct scenarios (2018 versus 2019). The period prior to sampling (summer and autumn 2017) was extremely dry and hot, whereas climatic fluctuations in 2018-2019 (when the sampling occurred) were closer to the norm. A total of 28 sampling sites were surveyed in streams of Regions where water scarcity is differentially constitutive. The results showed a consistent environmental and ecological gradient in both years, despite the background differences. A coinciding mineralization, temperature, riparian cover and water availability gradient clearly separated Regions C (wettest) and S (driest), with Region N occupying an intermediate position. Region C had overall higher ecological quality (prevalence of sensitive organisms) in both years. Despite our a priori expectations that 2018 would represent a much more stressful condition, with larger differences across Regions (because of their constitutive background), the data suggest that macroinvertebrate communities may be resilient or adapted, to some degree, to hydrological fluctuations. Signs of more favourable conditions in 2019 were also observed (general improvement in ecological status). Studies across hydrological and climatic gradients (in time and space) are particularly important where water availability is becoming more challenging.
英文关键词	Drought; Ecological status; Environmental gradient; Macroinvertebrate communities; Mediterranean streams; Water availability
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
WOS类目	Environmental Sciences ; Limnology ; Marine & Freshwater Biology
WOS记录号	WOS:001132324700001
来源期刊	AQUATIC SCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299257
作者单位	Universidade de Aveiro; Universidade do Minho; Universidade do Minho; Universidade do Minho
推荐引用方式 GB/T 7714	Santos, Joana Isabel,Silva, Carlos,Goncalves, Fernando J. M.,et al. Macroinvertebrate communities reveal regional asymmetries in riverine ecosystems along a gradient of water availability in hydrologically distinct years[J],2024,86(1).
APA	Santos, Joana Isabel,Silva, Carlos,Goncalves, Fernando J. M.,Pereira, Joana Luisa,&Castro, Bruno Branco.(2024).Macroinvertebrate communities reveal regional asymmetries in riverine ecosystems along a gradient of water availability in hydrologically distinct years.AQUATIC SCIENCES,86(1).
MLA	Santos, Joana Isabel,et al."Macroinvertebrate communities reveal regional asymmetries in riverine ecosystems along a gradient of water availability in hydrologically distinct years".AQUATIC SCIENCES 86.1(2024).