气候变化领域集成服务门户(CCPortal): Large herbivore assemblages in a changing climate: incorporating water dependence and thermoregulation

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DOI	10.1111/ele.13350
	Large herbivore assemblages in a changing climate: incorporating water dependence and thermoregulation
	Veldhuis M.P.; Kihwele E.S.; Cromsigt J.P.G.M.; Ogutu J.O.; Hopcraft J.G.C.; Owen-Smith N.; Olff H.
发表日期	2019
ISSN	1461023X
卷号	22 期号:10
英文摘要	The coexistence of different species of large herbivores (ungulates) in grasslands and savannas has fascinated ecologists for decades. However, changes in climate, land-use and trophic structure of ecosystems increasingly jeopardise the persistence of such diverse assemblages. Body size has been used successfully to explain ungulate niche differentiation with regard to food requirements and predation sensitivity. But this single trait axis insufficiently captures interspecific differences in water requirements and thermoregulatory capacity and thus sensitivity to climate change. Here, we develop a two-dimensional trait space of body size and minimum dung moisture content that characterises the combined food and water requirements of large herbivores. From this, we predict that increased spatial homogeneity in water availability in drylands reduces the number of ungulate species that will coexist. But we also predict that extreme droughts will cause the larger, water-dependent grazers as wildebeest, zebra and buffalo–dominant species in savanna ecosystems – to be replaced by smaller, less water-dependent species. Subsequently, we explore how other constraints such as predation risk and thermoregulation are connected to this two-dimensional framework. Our novel framework integrates multiple simultaneous stressors for herbivores and yields an extensive set of testable hypotheses about the expected changes in large herbivore community composition following climate change. © 2019 The Authors. Ecology Letters published by CNRS and John Wiley & Sons Ltd.
英文关键词	Climate change; hyperthermia; niche differentiation; predation risk; ungulates; water requirements
语种	英语
scopus关键词	assembly rule; body size; climate change; coexistence; extreme event; grassland; herbivore; interspecific variation; niche; predation risk; savanna; thermoregulation; trophic structure; ungulate; Equus subg. Hippotigris; Ungulata; water; animal; biological model; body size; climate change; ecosystem; herbivory; physiology; thermoregulation; Animals; Body Size; Body Temperature Regulation; Climate Change; Ecosystem; Herbivory; Models, Biological; Water
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/121037
作者单位	University of Groningen, Nijenborg 7, Groningen, 9747AG, Netherlands; Princeton University, 106A Guyot Ln, Princeton, NJ 08544, United States; Leiden University, Einsteinweg 2, Leiden, 2333CC, Netherlands; Tanzania National Parks, Arusha, Tanzania; Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences, Umeå, 901 83, Sweden; Centre for African Conservation Ecology, Department of Zoology, Nelson Mandela University, PO Box 77000, Port Elizabeth, 6031, South Africa; Environmental Sciences group, Copernicus Institute of Sustainable Development, Utrecht University, PO Box 80115, Utrecht, 3508 TC, Netherlands; University of Hohenheim, Institute of Crop Science, Biostatistics Unit, Fruwirthstrasse 23, Stuttgart, 70599, Germany; University of Glasgow, Glasgow, G128QQ, United Kingdom; Centre for African Ecology, School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, Wits, 2050, South Africa
推荐引用方式 GB/T 7714	Veldhuis M.P.,Kihwele E.S.,Cromsigt J.P.G.M.,et al. Large herbivore assemblages in a changing climate: incorporating water dependence and thermoregulation[J],2019,22(10).
APA	Veldhuis M.P..,Kihwele E.S..,Cromsigt J.P.G.M..,Ogutu J.O..,Hopcraft J.G.C..,...&Olff H..(2019).Large herbivore assemblages in a changing climate: incorporating water dependence and thermoregulation.Ecology Letters,22(10).
MLA	Veldhuis M.P.,et al."Large herbivore assemblages in a changing climate: incorporating water dependence and thermoregulation".Ecology Letters 22.10(2019).