DOI: 10.1002/2015GB005274
Scopus记录号: 2-s2.0-84946543722
论文题名: Coralline algae as a globally significant pool of marine dimethylated sulfur
作者: Burdett H ; L ; , Hatton A ; D ; , Kamenos N ; A
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2015
卷: 29, 期: 10 起始页码: 1845
结束页码: 1853
语种: 英语
英文关键词: crustose coralline algae (CCA)
; dimethylsulphide (DMS)
; dimethylsulphoniopropionate (DMSP)
; maerl
; rhodolith
; sulfur cycle
Scopus关键词: biogeochemical cycle
; climate change
; coralline alga
; dimethylsulfide
; dimethylsulfoniopropionate
; growth rate
; marine environment
; red alga
; rhodolith
; sulfur cycle
; temperature effect
; temporal variation
; water column
; algae
; Corallinales
英文摘要: Marine algae are key sources of the biogenic sulfur compound dimethylsulphoniopropionate (DMSP), a vital component of the marine sulfur cycle. Autotrophic ecosystem engineers such as red coralline algae support highly diverse and biogeochemically active ecosystems and are known to be high DMSP producers, but their importance in the global marine sulfur cycle has not yet been appreciated. Using a global sampling approach, we show that red coralline algae are a globally significant pool of DMSP in the oceans, estimated to be ~110 × 1012 moles worldwide during the summer months. Latitude was a major driver of observed regional-scale variations, with peaks in polar and tropical climate regimes, reflecting the varied cellular functions for DMSP (e.g., as a cryoprotectant and antioxidant). A temperate coralline algal bed was investigated in more detail to also identify local-scale temporal variations. Here, water column DMSP was driven by water temperature, and to a lesser extent, cloud cover; two factors which are also vital in controlling coralline algal growth. This study demonstrates that coralline algae harbor a large pool of dimethylated sulfur, thereby playing a significant role in both the sulfur and carbon marine biogeochemical cycles. However, coralline algal habitats are severely threatened by projected climate change; a loss of this habitat may thus detrimentally impact oceanic sulfur and carbon biogeochemical cycling. ©2015. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77924
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Earth and Environmental Sciences, Scottish Oceans Institute, University of St.Andrews, St.Andrews, United Kingdom; School of Geographical and Earth Sciences, University of Glasgow, Glasgow, United Kingdom; Scottish Association for Marine Science, Oban, United Kingdom
Recommended Citation:
Burdett H,L,, Hatton A,et al. Coralline algae as a globally significant pool of marine dimethylated sulfur[J]. Global Biogeochemical Cycles,2015-01-01,29(10)