DOI: 10.1111/gcb.12284
论文题名: Aphid-willow interactions in a high Arctic ecosystem: Responses to raised temperature and goose disturbance
作者: Gillespie M.A.K. ; Jónsdóttir I.S. ; Hodkinson I.D. ; Cooper E.J.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 12 起始页码: 3698
结束页码: 3708
语种: 英语
英文关键词: Climate change
; Grazing
; Herbivory
; Phenology
; Salix polaris
; Sitobion calvulum
; Svalbard
; Trophic mismatch
Scopus关键词: aphid
; climate change
; climate effect
; grazing pressure
; growing season
; herbivore
; phenology
; population dynamics
; temperature effect
; trophic interaction
; waterfowl
; Arctic
; Svalbard
; Svalbard and Jan Mayen
; Anser
; Aphididae
; Branta leucopsis
; Hexapoda
; Invertebrata
; Salix
; Salix polaris
; Sitobion
; Thoracica
; Vertebrata
; animal
; aphid
; Arctic
; article
; climate change
; goose
; grazing
; growth, development and aging
; herbivory
; phenology
; physiology
; population dynamics
; reproduction
; Salix polaris
; season
; Sitobion calvulum
; Svalbard and Jan Mayen
; temperature
; trophic mismatch
; willow
; climate change
; grazing
; herbivory
; phenology
; Salix polaris
; Sitobion calvulum
; Svalbard
; trophic mismatch
; Animals
; Aphids
; Arctic Regions
; Climate Change
; Geese
; Herbivory
; Population Dynamics
; Reproduction
; Salix
; Seasons
; Svalbard
; Temperature
英文摘要: Recently, there have been several studies using open top chambers (OTCs) or cloches to examine the response of Arctic plant communities to artificially elevated temperatures. Few, however, have investigated multitrophic systems, or the effects of both temperature and vertebrate grazing treatments on invertebrates. This study investigated trophic interactions between an herbivorous insect (Sitobion calvulum, Aphididae), a woody perennial host plant (Salix polaris) and a selective vertebrate grazer (barnacle geese, Branta leucopsis). In a factorial experiment, the responses of the insect and its host to elevated temperatures using open top chambers (OTCs) and to three levels of goose grazing pressure were assessed over two summer growing seasons (2004 and 2005). OTCs significantly enhanced the leaf phenology of Salix in both years and there was a significant OTC by goose presence interaction in 2004. Salix leaf number was unaffected by treatments in both years, but OTCs increased leaf size and mass in 2005. Salix reproduction and the phenology of flowers were unaffected by both treatments. Aphid densities were increased by OTCs but unaffected by goose presence in both years. While goose presence had little effect on aphid density or host plant phenology in this system, the OTC effects provide interesting insights into the possibility of phenological synchrony disruption. The advanced phenology of Salix effectively lengthens the growing season for the plant, but despite a close association with leaf maturity, the population dynamics of the aphid appeared to lack a similar phenological response, except for the increased population observed. © 2013 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62267
Appears in Collections: 影响、适应和脆弱性
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作者单位: Institute of Integrative and Comparative Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, United Kingdom; University Centre in Svalbard (UNIS), Longyarbyen, N- 9171, Norway; Institute of Biology, University of Iceland, Askja, Sturlugata 7, Reykjavik, IS-101, Iceland; School of Natural Sciences and Psychology, Liverpool John Moores University, Byrom St, Liverpool, L3 3AF, United Kingdom; Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, University of Tromsø, Tromsø, N-9037, Norway
Recommended Citation:
Gillespie M.A.K.,Jónsdóttir I.S.,Hodkinson I.D.,et al. Aphid-willow interactions in a high Arctic ecosystem: Responses to raised temperature and goose disturbance[J]. Global Change Biology,2013-01-01,19(12)