Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14291 |
Contribution of sea ice microbial production to Antarctic benthic communities is driven by sea ice dynamics and composition of functional guilds | |
Wing, Stephen R.1; Leichter, James J.2; Wing, Lucy C.1; Stokes, Dale2; Genovese, Sal J.1; McMullin, Rebecca M.1; Shatova, Olya A.1 | |
2018-08-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:8页码:3642-3653 |
文章类型 | Article |
语种 | 英语 |
国家 | New Zealand; USA |
英文摘要 | Organic matter produced by the sea ice microbial community (SIMCo) is an important link between sea ice dynamics and secondary production in near-shore food webs of Antarctica. Sea ice conditions in McMurdo Sound were quantified from time series of MODIS satellite images for Sept. 1 through Feb. 28 of 2007-2015. A predictable sea ice persistence gradient along the length of the Sound and evidence for a distinct change in sea ice dynamics in 2011 were observed. We used stable isotope analysis (delta C-13 and delta N-15) of SIMCo, suspended particulate organic matter (SPOM) and shallow water (10-20m) macroinvertebrates to reveal patterns in trophic structure of, and incorporation of organic matter from SIMCo into, benthic communities at eight sites distributed along the sea ice persistence gradient. Mass-balance analysis revealed distinct trophic architecture among communities and large fluxes of SIMCo into the near-shore food web, with the estimates ranging from 2 to 84% of organic matter derived from SIMCo for individual species. Analysis of patterns in density, and biomass of macroinvertebrate communities among sites allowed us to model net incorporation of organic matter from SIMCo, in terms of biomass per unit area (g/m(2)), into benthic communities. Here, organic matter derived from SIMCo supported 39 to 71 per cent of total biomass. Furthermore, for six species, we observed declines in contribution of SIMCo between years with persistent sea ice (2008-2009) and years with extensive sea ice breakout (2012-2015). Our data demonstrate the vital role of SIMCo in ecosystem function in Antarctica and strong linkages between sea ice dynamics and near-shore secondary productivity. These results have important implications for our understanding of how benthic communities will respond to changes in sea ice dynamics associated with climate change and highlight the important role of shallow water macroinvertebrate communities as sentinels of change for the Antarctic marine ecosystem. |
英文关键词 | Antarctica climate change food web organic matter sea ice sea ice algae |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437284700031 |
WOS关键词 | PARTICULATE ORGANIC-MATTER ; MCMURDO SOUND ; ROSS SEA ; FOOD-WEB ; INORGANIC CARBON ; TROPHIC POSITION ; OCEAN ECOSYSTEM ; STABLE-ISOTOPES ; ROCK WALLS ; DELTA-C-13 |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/16570 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ Otago, Dept Marine Sci, Dunedin, New Zealand; 2.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA |
推荐引用方式 GB/T 7714 | Wing, Stephen R.,Leichter, James J.,Wing, Lucy C.,et al. Contribution of sea ice microbial production to Antarctic benthic communities is driven by sea ice dynamics and composition of functional guilds[J]. GLOBAL CHANGE BIOLOGY,2018,24(8):3642-3653. |
APA | Wing, Stephen R..,Leichter, James J..,Wing, Lucy C..,Stokes, Dale.,Genovese, Sal J..,...&Shatova, Olya A..(2018).Contribution of sea ice microbial production to Antarctic benthic communities is driven by sea ice dynamics and composition of functional guilds.GLOBAL CHANGE BIOLOGY,24(8),3642-3653. |
MLA | Wing, Stephen R.,et al."Contribution of sea ice microbial production to Antarctic benthic communities is driven by sea ice dynamics and composition of functional guilds".GLOBAL CHANGE BIOLOGY 24.8(2018):3642-3653. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论