DOI: 10.1111/gcb.13414
论文题名: Climate-driven disparities among ecological interactions threaten kelp forest persistence
作者: Provost E.J. ; Kelaher B.P. ; Dworjanyn S.A. ; Russell B.D. ; Connell S.D. ; Ghedini G. ; Gillanders B.M. ; Figueira W. ; Coleman M.A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2017
卷: 23, 期: 1 起始页码: 353
结束页码: 361
语种: 英语
英文关键词: acidification
; kelp
; kelp forests
; ocean climate change
; ocean warming
; temperate reefs
; trophic interactions
Scopus关键词: acidification
; climate change
; climate effect
; ecological impact
; ecosystem response
; global warming
; kelp forest
; persistence
; sea surface temperature
; temperate environment
; trophic interaction
; algae
; Laminariales
; lobster
英文摘要: The combination of ocean warming and acidification brings an uncertain future to kelp forests that occupy the warmest parts of their range. These forests are not only subject to the direct negative effects of ocean climate change, but also to a combination of unknown indirect effects associated with changing ecological landscapes. Here, we used mesocosm experiments to test the direct effects of ocean warming and acidification on kelp biomass and photosynthetic health, as well as climate-driven disparities in indirect effects involving key consumers (urchins and rock lobsters) and competitors (algal turf). Elevated water temperature directly reduced kelp biomass, while their turf-forming competitors expanded in response to ocean acidification and declining kelp canopy. Elevated temperatures also increased growth of urchins and, concurrently, the rate at which they thinned kelp canopy. Rock lobsters, which are renowned for keeping urchin populations in check, indirectly intensified negative pressures on kelp by reducing their consumption of urchins in response to elevated temperature. Overall, these results suggest that kelp forests situated towards the low-latitude margins of their distribution will need to adapt to ocean warming in order to persist in the future. What is less certain is how such adaptation in kelps can occur in the face of intensifying consumptive (via ocean warming) and competitive (via ocean acidification) pressures that affect key ecological interactions associated with their persistence. If such indirect effects counter adaptation to changing climate, they may erode the stability of kelp forests and increase the probability of regime shifts from complex habitat-forming species to more simple habitats dominated by algal turfs. © 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/61214
Appears in Collections: 影响、适应和脆弱性
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作者单位: National Marine Science Centre & Centre for Coastal Biogeochemistry Research, School of Environment, Science and Engineering, Southern Cross University, Coffs Harbour, NSW, Australia; The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong; Southern Seas Ecology Laboratories, School of Biological Sciences & Environment Institute, University of Adelaide, Adelaide, SA, Australia; Marine Ecology Laboratories, School of Biological Sciences, University of Sydney, Sydney, NSW, Australia; Department of Primary Industries, New South Wales Fisheries, PO Box 4321, Coffs Harbour, Australia
Recommended Citation:
Provost E.J.,Kelaher B.P.,Dworjanyn S.A.,et al. Climate-driven disparities among ecological interactions threaten kelp forest persistence[J]. Global Change Biology,2017-01-01,23(1)