DOI: 10.1111/gcb.12334
论文题名: Sponge biomass and bioerosion rates increase under ocean warming and acidification
作者: Fang J.K.H. ; Mello-Athayde M.A. ; Schönberg C.H.L. ; Kline D.I. ; Hoegh-Guldberg O. ; Dove S.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 12 起始页码: 3581
结束页码: 3591
语种: 英语
英文关键词: Acidification
; Bioerosion
; Carbon dioxide
; Climate change
; Coral reefs
; Sponges
; Temperature
Scopus关键词: acidification
; bioerosion
; biomass
; carbon dioxide
; carbon emission
; carbonate
; climate change
; coral reef
; erosion rate
; global change
; sponge
; Anthozoa
; Cliona orientalis
; Dinophyceae
; Symbiodinium
; carbon dioxide
; sea water
; acidification
; animal
; article
; bioerosion
; biomass
; chemistry
; climate change
; coral reef
; dinoflagellate
; pH
; physiology
; population dynamics
; sea
; sponge (Porifera)
; sponges
; temperature
; acidification
; bioerosion
; carbon dioxide
; climate change
; coral reefs
; sponges
; temperature
; Animals
; Biomass
; Climate Change
; Coral Reefs
; Dinoflagellida
; Hydrogen-Ion Concentration
; Oceans and Seas
; Population Dynamics
; Porifera
; Seawater
英文摘要: The combination of ocean warming and acidification as a result of increasing atmospheric carbon dioxide (CO2) is considered to be a significant threat to calcifying organisms and their activities on coral reefs. How these global changes impact the important roles of decalcifying organisms (bioeroders) in the regulation of carbonate budgets, however, is less understood. To address this important question, the effects of a range of past, present and future CO2 emission scenarios (temperature + acidification) on the excavating sponge Cliona orientalis Thiele, 1900 were explored over 12 weeks in early summer on the southern Great Barrier Reef. C. orientalis is a widely distributed bioeroder on many reefs, and hosts symbiotic dinoflagellates of the genus Symbiodinium. Our results showed that biomass production and bioerosion rates of C. orientalis were similar under a pre-industrial scenario and a present day (control) scenario. Symbiodinium population density in the sponge tissue was the highest under the pre-industrial scenario, and decreased towards the two future scenarios with sponge replicates under the 'business-as-usual' CO2 emission scenario exhibiting strong bleaching. Despite these changes, biomass production and the ability of the sponge to erode coral carbonate materials both increased under the future scenarios. Our study suggests that C. orientalis will likely grow faster and have higher bioerosion rates in a high CO2 future than at present, even with significant bleaching. Assuming that our findings hold for excavating sponges in general, increased sponge biomass coupled with accelerated bioerosion may push coral reefs towards net erosion and negative carbonate budgets in the future. © 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/62270
Appears in Collections: 影响、适应和脆弱性
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作者单位: Coral Reef Ecosystems Laboratory, School of Biological Sciences, The University of Queensland, St. Lucia, QLD, 4072, Australia; Australian Research Council Centre of Excellence for Coral Reef Studies, The University of Queensland, St. Lucia, QLD, 4072, Australia; Australian Institute of Marine Science, Oceans Institute, The University of Western Australia, Crawley, WA, 6009, Australia; Global Change Institute, The University of Queensland, St. Lucia, QLD, 4072, Australia
Recommended Citation:
Fang J.K.H.,Mello-Athayde M.A.,Schönberg C.H.L.,et al. Sponge biomass and bioerosion rates increase under ocean warming and acidification[J]. Global Change Biology,2013-01-01,19(12)