DOI: 10.1111/gcb.12841
论文题名: Acidification effects on biofouling communities: Winners and losers
作者: Peck L.S. ; Clark M.S. ; Power D. ; Reis J. ; Batista F.M. ; Harper E.M.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 5 起始页码: 1907
结束页码: 1913
语种: 英语
英文关键词: Algae
; Ascidian
; Assemblage
; Calcium carbonate
; Climate change
; Encrusting
; Ocean acidification
; Polychaete
; Skeleton
; Spirorbid
; Sponge
Scopus关键词: acidification
; alga
; biofouling
; calcium carbonate
; climate change
; community composition
; exoskeleton
; filter feeder
; polychaete
; sponge
; algae
; Aplidium
; Ascidia
; Ascidiacea
; Bacillariophyta
; Calcarea
; Leucosolenia sp.
; Molgula
; Neodexiospira pseudocorrugata
; Polychaeta
; Spirorbidae
; primer DNA
; sea water
; animal
; biofouling
; biota
; chemistry
; DNA barcoding
; genetics
; growth, development and aging
; nonparametric test
; pH
; Polychaeta
; population dynamics
; Portugal
; scanning electron microscopy
; species difference
; sponge (Porifera)
; statistics and numerical data
; Urochordata
; Animals
; Biofouling
; Biota
; DNA Barcoding, Taxonomic
; DNA Primers
; Hydrogen-Ion Concentration
; Microscopy, Electron, Scanning
; Polychaeta
; Population Dynamics
; Porifera
; Portugal
; Seawater
; Species Specificity
; Statistics, Nonparametric
; Urochordata
英文摘要: How ocean acidification affects marine life is a major concern for science and society. However, its impacts on encrusting biofouling communities, that are both the initial colonizers of hard substrata and of great economic importance, are almost unknown. We showed that community composition changed significantly, from 92% spirorbids, 3% ascidians and 4% sponges initially to 47% spirorbids, 23% ascidians and 29% sponges after 100 days in acidified conditions (pH 7.7). In low pH, numbers of the spirorbid Neodexiospira pseudocorrugata were reduced ×5 compared to controls. The two ascidians present behaved differently with Aplidium sp. decreasing ×10 in pH 7.7, whereas Molgula sp. numbers were ×4 higher in low pH than controls. Calcareous sponge (Leucosolenia sp.) numbers increased ×2.5 in pH 7.7 over controls. The diatom and filamentous algal community was also more poorly developed in the low pH treatments compared to controls. Colonization of new surfaces likewise showed large decreases in spirorbid numbers, but numbers of sponges and Molgula sp. increased. Spirorbid losses appeared due to both recruitment failure and loss of existing tubes. Spirorbid tubes are comprised of a loose prismatic fabric of calcite crystals. Loss of tube materials appeared due to changes in the binding matrix and not crystal dissolution, as SEM analyses showed crystal surfaces were not pitted or dissolved in low pH conditions. Biofouling communities face dramatic future changes with reductions in groups with hard exposed exoskeletons and domination by soft-bodied ascidians and sponges. © 2015 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/61878
Appears in Collections: 影响、适应和脆弱性
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作者单位: British Antarctic Survey, High Cross, Madingley Rd, Cambridge, United Kingdom; University of the Algarve, Ctr Ciencias Mar, Faro, Portugal; Instituto Português do Mar e da Atmosfera (IPMA), Estação Experimental de Moluscicultura de Tavira, Vale Caranguejo, Tavira, Portugal; Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, United Kingdom
Recommended Citation:
Peck L.S.,Clark M.S.,Power D.,et al. Acidification effects on biofouling communities: Winners and losers[J]. Global Change Biology,2015-01-01,21(5)