DOI: 10.1111/gcb.14303
Scopus记录号: 2-s2.0-85049788613
论文题名: Carbon assimilation and transfer through kelp forests in the NE Atlantic is diminished under a warmer ocean climate
作者: Pessarrodona A. ; Moore P.J. ; Sayer M.D.J. ; Smale D.A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 9 起始页码: 4386
结束页码: 4398
语种: 英语
英文关键词: coastal management
; Laminaria hyperborea
; macroalgae
; ocean warming
; primary productivity
; subtidal rocky habitats
; temperate reef
; trophic subsidies
Scopus关键词: Laminaria hyperborea
英文摘要: Global climate change is affecting carbon cycling by driving changes in primary productivity and rates of carbon fixation, release and storage within Earth's vegetated systems. There is, however, limited understanding of how carbon flow between donor and recipient habitats will respond to climatic changes. Macroalgal-dominated habitats, such as kelp forests, are gaining recognition as important carbon donors within coastal carbon cycles, yet rates of carbon assimilation and transfer through these habitats are poorly resolved. Here, we investigated the likely impacts of ocean warming on coastal carbon cycling by quantifying rates of carbon assimilation and transfer in Laminaria hyperborea kelp forests—one of the most extensive coastal vegetated habitat types in the NE Atlantic—along a latitudinal temperature gradient. Kelp forests within warm climatic regimes assimilated, on average, more than three times less carbon and donated less than half the amount of particulate carbon compared to those from cold regimes. These patterns were not related to variability in other environmental parameters. Across their wider geographical distribution, plants exhibited reduced sizes toward their warm-water equatorward range edge, further suggesting that carbon flow is reduced under warmer climates. Overall, we estimated that Laminaria hyperborea forests stored ~11.49 Tg C in living biomass and released particulate carbon at a rate of ~5.71 Tg C year−1. This estimated flow of carbon was markedly higher than reported values for most other marine and terrestrial vegetated habitat types in Europe. Together, our observations suggest that continued warming will diminish the amount of carbon that is assimilated and transported through temperate kelp forests in NE Atlantic, with potential consequences for the coastal carbon cycle. Our findings underline the need to consider climate-driven changes in the capacity of ecosystems to fix and donate carbon when assessing the impacts of climate change on carbon cycling. © 2018 The Authors Global Change Biology Published by John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110253
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: The Citadel Hill Laboratory, Marine Biological Association of the United Kingdom, Plymouth, United Kingdom; Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, United Kingdom; Centre for Marine Ecosystems Research, School of Natural Sciences, Edith Cowan University, Joondalup, WA, Australia; NERC National Facility for Scientific Diving, Scottish Association for Marine Science, Oban, United Kingdom; UWA Oceans Institute and School of Biological Sciences, University of Western Australia, Crawley, WA, Australia
Recommended Citation:
Pessarrodona A.,Moore P.J.,Sayer M.D.J.,et al. Carbon assimilation and transfer through kelp forests in the NE Atlantic is diminished under a warmer ocean climate[J]. Global Change Biology,2018-01-01,24(9)