دورية أكاديمية
Ice Algae-Produced Carbon Is Critical for Overwintering of Antarctic Krill Euphausia superba
| العنوان: | Ice Algae-Produced Carbon Is Critical for Overwintering of Antarctic Krill Euphausia superba |
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| المؤلفون: | Doreen Kohlbach, Benjamin A. Lange, Fokje L. Schaafsma, Carmen David, Martina Vortkamp, Martin Graeve, Jan A. van Franeker, Thomas Krumpen, Hauke Flores |
| المصدر: | Frontiers in Marine Science, Vol 4 (2017) |
| بيانات النشر: | Frontiers Media S.A., 2017. |
| سنة النشر: | 2017 |
| المجموعة: | LCC:Science LCC:General. Including nature conservation, geographical distribution |
| مصطلحات موضوعية: | Antarctic krill, Euphausia superba, fisheries resources, carbon sources, ice algae, marker fatty acids, Science, General. Including nature conservation, geographical distribution, QH1-199.5 |
| الوصف: | Antarctic krill Euphausia superba (“krill”) constitute a fundamental food source for Antarctic seabirds and mammals, and a globally important fisheries resource. The future resilience of krill to climate change depends critically on the winter survival of young krill. To survive periods of extremely low production by pelagic algae during winter, krill are assumed to rely partly on carbon produced by ice algae. The true dependency on ice algae-produced carbon, however, is so far unquantified. This confounds predictions on the future resilience of krill stocks to sea ice decline. Fatty acid (FA) analysis, bulk stable isotope analysis (BSIA), and compound-specific stable isotope analysis (CSIA) of diatom- and dinoflagellate-associated marker FAs were applied to quantify the dependency of overwintering larval, juvenile, and adult krill on ice algae-produced carbon (αIce) during winter 2013 in the Weddell-Scotia Confluence Zone. Our results demonstrate that the majority of the carbon uptake of the overwintering larval and juvenile krill originated from ice algae (up to 88% of the carbon budget), and that the dependency on ice algal carbon decreased with ontogeny, reaching |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2296-7745 |
| العلاقة: | http://journal.frontiersin.org/article/10.3389/fmars.2017.00310/fullTest; https://doaj.org/toc/2296-7745Test |
| DOI: | 10.3389/fmars.2017.00310 |
| الوصول الحر: | https://doaj.org/article/239de89761d94f54ad0336ae64d1a3c1Test |
| رقم الانضمام: | edsdoj.239de89761d94f54ad0336ae64d1a3c1 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 22967745 |
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| DOI: | 10.3389/fmars.2017.00310 |