气候变化领域集成服务门户(CCPortal): From clear lakes to murky waters – tracing the functional response of high-latitude lake communities to concurrent ‘greening’ and ‘browning’

CCPortal

DOI	10.1111/ele.13238
	From clear lakes to murky waters – tracing the functional response of high-latitude lake communities to concurrent ‘greening’ and ‘browning’
	Hayden B.; Harrod C.; Thomas S.M.; Eloranta A.P.; Myllykangas J.-P.; Siwertsson A.; Præbel K.; Knudsen R.; Amundsen P.-A.; Kahilainen K.K.
发表日期	2019
ISSN	1461023X
卷号	22 期号:5
英文摘要	Climate change and the intensification of land use practices are causing widespread eutrophication of subarctic lakes. The implications of this rapid change for lake ecosystem function remain poorly understood. To assess how freshwater communities respond to such profound changes in their habitat and resource availability, we conducted a space-for-time analysis of food-web structure in 30 lakes situated across a temperature-productivity gradient equivalent to the predicted future climate of subarctic Europe (temperature +3°C, precipitation +30% and nutrient +45 μg L −1 total phosphorus). Along this gradient, we observed an increase in the assimilation of pelagic-derived carbon from 25 to 75% throughout primary, secondary and tertiary consumers. This shift was overwhelmingly driven by the consumption of pelagic detritus by benthic primary consumers and was not accompanied by increased pelagic foraging by higher trophic level consumers. Our data also revealed a convergence of the carbon isotope ratios of pelagic and benthic food web endmembers in the warmest, most productive lakes indicating that the incorporation of terrestrial derived carbon into aquatic food webs increases as land use intensifies. These results, reflecting changes along a gradient characteristic of the predicted future environment throughout the subarctic, indicate that climate and land use driven eutrophication and browning are radically altering the function and fuelling of aquatic food webs in this biome. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	cryptic energetic pathways; ecological stable states; habitat coupling; space-for-time; stable isotope analysis; trophic niche
语种	英语
scopus关键词	climate change; ecosystem; Europe; food chain; lake; Climate Change; Ecosystem; Europe; Food Chain; Lakes
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/121096
作者单位	Department of Biology, Canadian Rivers Institute, University of New BrunswickNB, Canada; Kilpisjärvi Biological Station, University of Helsinki, Helsinki, Finland; Instituto de Ciencias Naturales Alexander von Humboldt, Universidad de Antofagasta, Antofagasta, Chile; Núcleo Milenio INVASAL, Concepción, Chile; EAWAG Swiss Federal Institute of Aquatic Science and Technology, Center for Ecology, Evolution and Biogeochemistry, Kastanienbaum, Switzerland; Department of Aquatic Ecology, Norwegian Institute for Nature Research (NINA), Trondheim, Norway; Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä, Finland; Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Tromsø, Norway; Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Tromsø, Norway; Department of Forestry and Wildlife Management, Inland Norway University of Applied Sci...
推荐引用方式 GB/T 7714	Hayden B.,Harrod C.,Thomas S.M.,等. From clear lakes to murky waters – tracing the functional response of high-latitude lake communities to concurrent ‘greening’ and ‘browning’[J],2019,22(5).
APA	Hayden B..,Harrod C..,Thomas S.M..,Eloranta A.P..,Myllykangas J.-P..,...&Kahilainen K.K..(2019).From clear lakes to murky waters – tracing the functional response of high-latitude lake communities to concurrent ‘greening’ and ‘browning’.Ecology Letters,22(5).
MLA	Hayden B.,et al."From clear lakes to murky waters – tracing the functional response of high-latitude lake communities to concurrent ‘greening’ and ‘browning’".Ecology Letters 22.5(2019).