干旱区生态环境知识资源中心(Arid): The role of hydro-environmental factors in Mayfly (Ephemeroptera, Insecta) community structure: Identifying threshold responses

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DOI	10.1002/ece3.6333
	The role of hydro-environmental factors in Mayfly (Ephemeroptera, Insecta) community structure: Identifying threshold responses
	Ramulifho, Pfananani A.; Foord, Stefan H.; Rivers-Moore, Nick A.
通讯作者	Ramulifho, PA
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2020
卷号	10 期号:14 页码:6919-6928
英文摘要	Freshwater organisms are threatened by changes in stream flow and water temperature regimes due to global climate change and anthropogenic activities. Threats include the disappearance of narrow-tolerance species and loss of favorable thermal conditions for cold-adapted organisms. Mayflies are an abundant and diverse indicator of river health that performs important functional roles. The relative importance of key hydro-environmental factors such as water temperature and flow volumes in structuring these communities has rarely been explored in the tropical regions of Africa. Here, we investigate the response of mayfly species diversity to these factors in the Luvuvhu catchment, a strategic water source area in the arid northeastern region of South Africa. Mayfly larvae were sampled monthly in stones-in-current biotopes across 23 sites over a one-year period. The relationship between these environmental drivers and mayfly diversity was modeled using linear mixed effects models (LMMs) and a model-based multivariate approach. Threshold Indicator Taxa Analysis (TITAN) was used to model the response of mayfly species to important gradients and identify thresholds of change. Site-specific characteristic were the most important predictor of mayfly diversity, and there was considerable variation over time, with mayfly diversity peaking during winter. Along this, gradient temperature was the best predictor of assemblage structure, with five out of six reliable indicator species being cold-adapted, and a community threshold response at 19 degrees C. Results support laboratory-based thresholds of temperature for mayfly species survival and development, extending empirical evidence to include field-based observations. Increased global (climate change) and local (riparian vegetation removal, impoundments) changes are predicted to have negative impacts on mayfly diversity and ultimately on ecosystem function.
英文关键词	global change instream communities Luvuvhu River catchment stream flow thermal change TITAN water temperature
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000549719000001
WOS关键词	FUNCTIONAL FEEDING GROUPS ; ALTERED FLOW REGIMES ; UPPER THERMAL LIMITS ; MACROINVERTEBRATE ASSEMBLAGES ; WATER TEMPERATURE ; HEADWATER STREAMS ; CLIMATE-CHANGE ; LAND-USE ; RIVER ; INVERTEBRATES
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325083
作者单位	[Ramulifho, Pfananani A.; Foord, Stefan H.] Univ Venda, SARChl Chair Biodivers Value & Change, ZA-0950 Thohoyandou, South Africa; [Ramulifho, Pfananani A.; Foord, Stefan H.] Univ Venda, Dept Zool, ZA-0950 Thohoyandou, South Africa; [Ramulifho, Pfananani A.; Foord, Stefan H.] Univ Venda, Ctr Invas Biol, Thohoyandou, South Africa; [Rivers-Moore, Nick A.] Univ KwaZulu Natal, Ctr Water Resources Res, Scottsville, South Africa
推荐引用方式 GB/T 7714	Ramulifho, Pfananani A.,Foord, Stefan H.,Rivers-Moore, Nick A.. The role of hydro-environmental factors in Mayfly (Ephemeroptera, Insecta) community structure: Identifying threshold responses[J],2020,10(14):6919-6928.
APA	Ramulifho, Pfananani A.,Foord, Stefan H.,&Rivers-Moore, Nick A..(2020).The role of hydro-environmental factors in Mayfly (Ephemeroptera, Insecta) community structure: Identifying threshold responses.ECOLOGY AND EVOLUTION,10(14),6919-6928.
MLA	Ramulifho, Pfananani A.,et al."The role of hydro-environmental factors in Mayfly (Ephemeroptera, Insecta) community structure: Identifying threshold responses".ECOLOGY AND EVOLUTION 10.14(2020):6919-6928.