Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14392 |
Dependency of Antarctic zooplankton species on ice algae-produced carbon suggests a sea ice-driven pelagic ecosystem during winter | |
Kohlbach, Doreen1,2,3; Graeve, Martin1; Lange, Benjamin A.1,2,3; David, Carmen1,2; Schaafsma, Fokje L.4; van Franeker, Jan Andries4; Vortkamp, Martina1; Brandt, Angelika2,5; Flores, Hauke1,2 | |
2018-10-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:10页码:4667-4681 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Canada; Netherlands |
英文摘要 | How the abundant pelagic life of the Southern Ocean survives winter darkness, when the sea is covered by pack ice and phytoplankton production is nearly zero, is poorly understood. Ice-associated (sympagic) microalgae could serve as a high-quality carbon source during winter, but their significance in the food web is so far unquantified. To better understand the importance of ice algae-produced carbon for the overwintering of Antarctic organisms, we investigated fatty acid (FA) and stable isotope compositions of 10 zooplankton species, and their potential sympagic and pelagic carbon sources. FA-specific carbon stable isotope compositions were used in stable isotope mixing models to quantify the contribution of ice algae-produced carbon ((Ice)) to the body carbon of each species. Mean (Ice) estimates ranged from 4% to 67%, with large variations between species and depending on the FA used for the modelling. Integrating the (Ice) estimates from all models, the sympagic amphipod Eusirus laticarpus was the most dependent on ice algal carbon ((Ice): 54%-67%), and the salp Salpa thompsoni showed the least dependency on ice algal carbon ((Ice): 8%-40%). Differences in (Ice) estimates between FAs associated with short-term vs. long-term lipid pools suggested an increasing importance of ice algal carbon for many species as the winter season progressed. In the abundant winter-active copepod Calanus propinquus, mean (Ice) reached more than 50% in late winter. The trophic carbon flux from ice algae into this copepod was between 3 and 5mgCm(-2)day(-1). This indicates that copepods and other ice-dependent zooplankton species transfer significant amounts of carbon from ice algae into the pelagic system, where it fuels the food web, the biological carbon pump and elemental cycling. Understanding the role of ice algae-produced carbon in these processes will be the key to predictions of the impact of future sea ice decline on Antarctic ecosystem functioning. |
英文关键词 | Antarctic food web carbon sources climate change Compound-specific Stable Isotope Analysis marker fatty acids sea ice algae under-ice community |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445728800017 |
WOS关键词 | STABLE-ISOTOPE ANALYSES ; COPEPODS CALANUS-PROPINQUUS ; SOUTHERN-OCEAN ECOSYSTEMS ; KRILL EUPHAUSIA-SUPERBA ; UNSATURATED FATTY-ACIDS ; LIFE-CYCLE STRATEGY ; NW WEDDELL SEA ; FOOD-WEB ; CALANOIDES-ACUTUS ; CLIMATE-CHANGE |
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/17625 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Helmholtz Zentrum Polar & Meeresforsch, Alfred Wegener Inst, Bremerhaven, Germany; 2.Univ Hamburg, Zool Museum, Ctr Nat Hist CeNak, Hamburg, Germany; 3.Fisheries & Oceans Canada, Freshwater Inst, 501 Univ Crescent, Winnipeg, MB R3T 2N6, Canada; 4.Wageningen Marine Res, Den Helder, Netherlands; 5.Senckenberg Nat Museum, Frankfurt, Germany |
推荐引用方式 GB/T 7714 | Kohlbach, Doreen,Graeve, Martin,Lange, Benjamin A.,et al. Dependency of Antarctic zooplankton species on ice algae-produced carbon suggests a sea ice-driven pelagic ecosystem during winter[J]. GLOBAL CHANGE BIOLOGY,2018,24(10):4667-4681. |
APA | Kohlbach, Doreen.,Graeve, Martin.,Lange, Benjamin A..,David, Carmen.,Schaafsma, Fokje L..,...&Flores, Hauke.(2018).Dependency of Antarctic zooplankton species on ice algae-produced carbon suggests a sea ice-driven pelagic ecosystem during winter.GLOBAL CHANGE BIOLOGY,24(10),4667-4681. |
MLA | Kohlbach, Doreen,et al."Dependency of Antarctic zooplankton species on ice algae-produced carbon suggests a sea ice-driven pelagic ecosystem during winter".GLOBAL CHANGE BIOLOGY 24.10(2018):4667-4681. |
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