DOI: 10.1111/gcb.13103
论文题名: Beyond cool: Adapting upland streams for climate change using riparian woodlands
作者: Thomas S.M. ; Griffiths S.W. ; Ormerod S.J.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期: 1 起始页码: 310
结束页码: 324
语种: 英语
英文关键词: Adaptation
; Buffer strip
; Coarse particulate organic matter
; Isotope
; Macroinvertebrate
; River
; Subsidy
Scopus关键词: adaptive management
; buffer zone
; climate change
; macroinvertebrate
; particulate organic matter
; riparian zone
; stable isotope
; woodland
; United Kingdom
; Wales
; Coniferophyta
; Invertebrata
; animal
; biomass
; climate change
; ecosystem
; food chain
; forest
; invertebrate
; physiology
; river
; sunlight
; tree
; Wales
; Animals
; Biomass
; Climate Change
; Ecosystem
; Food Chain
; Forests
; Invertebrates
; Rivers
; Sunlight
; Trees
; Wales
英文摘要: Managed adaptation could reduce the risks of climate change to the world's ecosystems, but there have been surprisingly few practical evaluations of the options available. For example, riparian woodland is advocated widely as shade to reduce warming in temperate streams, but few studies have considered collateral effects on species composition or ecosystem functions. Here, we use cross-sectional analyses at two scales (region and within streams) to investigate whether four types of riparian management, including those proposed to reduce potential climate change impacts, might also affect the composition, functional character, dynamics and energetic resourcing of macroinvertebrates in upland Welsh streams (UK). Riparian land use across the region had only small effects on invertebrate taxonomic composition, while stable isotope data showed how energetic resources assimilated by macroinvertebrates in all functional guilds were split roughly 50:50 between terrestrial and aquatic origins irrespective of riparian management. Nevertheless, streams draining the most extensive deciduous woodland had the greatest stocks of coarse particulate matter (CPOM) and greater numbers of 'shredding' detritivores. Stream-scale investigations showed that macroinvertebrate biomass in deciduous woodland streams was around twice that in moorland streams, and lowest of all in streams draining non-native conifers. The unexpected absence of contrasting terrestrial signals in the isotopic data implies that factors other than local land use affect the relative incorporation of allochthonous subsidies into riverine food webs. Nevertheless, our results reveal how planting deciduous riparian trees along temperate headwaters as an adaptation to climate change can modify macroinvertebrate function, increase biomass and potentially enhance resilience by increasing basal resources where cover is extensive (>60 m riparian width). We advocate greater urgency in efforts to understand the ecosystem consequences of climate change adaptation to guide future actions. © 2016 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61516
Appears in Collections: 影响、适应和脆弱性
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作者单位: Catchment Research Group, Cardiff School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Cardiff, United Kingdom; Department of Environmental Sciences, University of Helsinki, P.O. Box 65, Helsinki, Finland
Recommended Citation:
Thomas S.M.,Griffiths S.W.,Ormerod S.J.. Beyond cool: Adapting upland streams for climate change using riparian woodlands[J]. Global Change Biology,2016-01-01,22(1)