globalchange  > 气候变化与战略
DOI: 10.1111/gcb.14862
论文题名:
Temperature change as a driver of spatial patterns and long-term trends in chironomid (Insecta: Diptera) diversity
作者: Engels S.; Medeiros A.S.; Axford Y.; Brooks S.J.; Heiri O.; Luoto T.P.; Nazarova L.; Porinchu D.F.; Quinlan R.; Self A.E.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2020
卷: 26, 期:3
语种: 英语
英文关键词: Arctic ; biodiversity ; climate warming ; freshwater ecosystems ; insects ; palaeoecology ; Quaternary
Scopus关键词: biodiversity ; fly ; freshwater ecosystem ; global warming ; long-term change ; metadata ; paleoecology ; Quaternary ; spatial distribution ; temperature effect ; Arctic ; Chironomidae ; Diptera ; Hexapoda ; Insecta ; Arctic ; article ; biodiversity ; Chironomidae ; climate warming ; fauna ; freshwater environment ; greenhouse effect ; Holocene ; interglacial ; lake ; metadata ; nonhuman ; paleoecology ; summer
英文摘要: Anthropogenic activities have led to a global decline in biodiversity, and monitoring studies indicate that both insect communities and wetland ecosystems are particularly affected. However, there is a need for long-term data (over centennial or millennial timescales) to better understand natural community dynamics and the processes that govern the observed trends. Chironomids (Insecta: Diptera: Chironomidae) are often the most abundant insects in lake ecosystems, sensitive to environmental change, and, because their larval exoskeleton head capsules preserve well in lake sediments, they provide a unique record of insect community dynamics through time. Here, we provide the results of a metadata analysis of chironomid diversity across a range of spatial and temporal scales. First, we analyse spatial trends in chironomid diversity using Northern Hemispheric data sets overall consisting of 837 lakes. Our results indicate that in most of our data sets, summer temperature (Tjul) is strongly associated with spatial trends in modern-day chironomid diversity. We observe a strong increase in chironomid alpha diversity with increasing Tjul in regions with present-day Tjul between 2.5 and 14°C. In some areas with Tjul > 14°C, chironomid diversity stabilizes or declines. Second, we demonstrate that the direction and amplitude of change in alpha diversity in a compilation of subfossil chironomid records spanning the last glacial–interglacial transition (~15,000–11,000 years ago) are similar to those observed in our modern data. A compilation of Holocene records shows that during phases when the amplitude of temperature change was small, site-specific factors had a greater influence on the chironomid fauna obscuring the chironomid diversity–temperature relationship. Our results imply expected overall chironomid diversity increases in colder regions such as the Arctic under sustained global warming, but with complex and not necessarily predictable responses for individual sites. © 2019 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158797
Appears in Collections:气候变化与战略

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作者单位: Department of Geography, Birkbeck University of London, London, United Kingdom; School for Resource and Environmental Studies, Dalhousie University, Halifax, NS, Canada; Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL, United States; Department of Life Sciences, Natural History Museum, London, United Kingdom; Geoecology, Department of Environmental Sciences, University of Basel, Basel, Switzerland; Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Lahti, Finland; Institute of Geosciences, Potsdam University, Potsdam-Golm, Germany; Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Research Unit Potsdam, Potsdam, Germany; Kazan Federal University, Kazan, Russian Federation; Department of Geography, University of Georgia, Athens, GA, United States; Department of Biology, York University, Toronto, ON, Canada

Recommended Citation:
Engels S.,Medeiros A.S.,Axford Y.,et al. Temperature change as a driver of spatial patterns and long-term trends in chironomid (Insecta: Diptera) diversity[J]. Global Change Biology,2020-01-01,26(3)
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