TEST Shifts in Antarctic megabenthic structure after ice-shelf disintegration in the Larsen area east of the Antarctic Peninsula
TESTThe aim of this study was to contribute to a general understanding of the response of the Antarctic macrobenthos to environmental variability and climate-induced changes. The change in population size of selected macrobenthic organisms was investigated in the Larsen A area east of the Antarctic...
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ftawi:oai:epic.awi.de:33149 2023-07-16T03:53:36+02:00 TEST Shifts in Antarctic megabenthic structure after ice-shelf disintegration in the Larsen area east of the Antarctic Peninsula Gutt, Julian Cape, Mattias Dimmler, Werner Fillinger, Laura Isla, Enrique Lieb, Verena Lundälv, Tomas TEST 2020 https://epic.awi.de/id/eprint/33149/ https://hdl.handle.net/10013/epic.41662 unknown TESTSpringer Science and Business Media LLC Gutt, J. , Cape, M. , Dimmler, W. , Fillinger, L. , Isla, E. , Lieb, V. and Lundälv, T. (2020) TEST Shifts in Antarctic megabenthic structure after ice-shelf disintegration in the Larsen area east of the Antarctic Peninsula / . TEST (editor) , Polar Biology, TESTSpringer Science and Business Media LLC . hdl:10013/epic.41662 EPIC3Polar Biology, TESTSpringer Science and Business Media LLC, 36, pp. 895-906, ISSN: 0722-4060 Book peerRev 2020 ftawi 2023-06-25T23:19:32Z TESTThe aim of this study was to contribute to a general understanding of the response of the Antarctic macrobenthos to environmental variability and climate-induced changes. The change in population size of selected macrobenthic organisms was investigated in the Larsen A area east of the Antarctic Peninsula in 2007 and 2011 using ROV-based imaging methods. The results were complemented by data from the Larsen B collected in 2007 to allow a conceptual reconstruction of the environment-driven changes before the period of investigation. Both Larsen areas are characterised by ice-shelf disintegration in 1995 and 2002, respectively, as well as high inter-annual variability in sea-ice cover and oceanographic conditions. In 2007 one ascidian species, Molgula pedunculata, was abundant north and south of the stripe of remaining ice shelf between Larsen A and B. Population densities decreased drastically in the Larsen A between 2007 and 2011, coincident with the decrease in Corella eumyota, another ascidian. Among the ophiuroids, the population of deposit feeders increased, while suspension feeders halved their abundance. Current measurements indicated a northward flow between the Larsen B and Larsen A, suggesting that a major physical forcing on benthic population development comes from the South. The results demonstrate that Antarctic macrobenthic populations can exhibit dramatic population dynamics. Analyses of sea-ice dynamics, salinity, temperature and surprisingly ice-shelf disintegration history, however, did not provide any clear evidence for environmental drivers underlying the apparent changes. © 2013 Springer-Verlag Berlin Heidelberg. Book Antarc* Antarctic Antarctic Peninsula Ice Shelf Polar Biology Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Antarctic Peninsula Stripe ENVELOPE(9.914,9.914,63.019,63.019) The Antarctic |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
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description |
TESTThe aim of this study was to contribute to a general understanding of the response of the Antarctic macrobenthos to environmental variability and climate-induced changes. The change in population size of selected macrobenthic organisms was investigated in the Larsen A area east of the Antarctic Peninsula in 2007 and 2011 using ROV-based imaging methods. The results were complemented by data from the Larsen B collected in 2007 to allow a conceptual reconstruction of the environment-driven changes before the period of investigation. Both Larsen areas are characterised by ice-shelf disintegration in 1995 and 2002, respectively, as well as high inter-annual variability in sea-ice cover and oceanographic conditions. In 2007 one ascidian species, Molgula pedunculata, was abundant north and south of the stripe of remaining ice shelf between Larsen A and B. Population densities decreased drastically in the Larsen A between 2007 and 2011, coincident with the decrease in Corella eumyota, another ascidian. Among the ophiuroids, the population of deposit feeders increased, while suspension feeders halved their abundance. Current measurements indicated a northward flow between the Larsen B and Larsen A, suggesting that a major physical forcing on benthic population development comes from the South. The results demonstrate that Antarctic macrobenthic populations can exhibit dramatic population dynamics. Analyses of sea-ice dynamics, salinity, temperature and surprisingly ice-shelf disintegration history, however, did not provide any clear evidence for environmental drivers underlying the apparent changes. © 2013 Springer-Verlag Berlin Heidelberg. |
author2 |
TEST |
format |
Book |
author |
Gutt, Julian Cape, Mattias Dimmler, Werner Fillinger, Laura Isla, Enrique Lieb, Verena Lundälv, Tomas |
spellingShingle |
Gutt, Julian Cape, Mattias Dimmler, Werner Fillinger, Laura Isla, Enrique Lieb, Verena Lundälv, Tomas TEST Shifts in Antarctic megabenthic structure after ice-shelf disintegration in the Larsen area east of the Antarctic Peninsula |
author_facet |
Gutt, Julian Cape, Mattias Dimmler, Werner Fillinger, Laura Isla, Enrique Lieb, Verena Lundälv, Tomas |
author_sort |
Gutt, Julian |
title |
TEST Shifts in Antarctic megabenthic structure after ice-shelf disintegration in the Larsen area east of the Antarctic Peninsula |
title_short |
TEST Shifts in Antarctic megabenthic structure after ice-shelf disintegration in the Larsen area east of the Antarctic Peninsula |
title_full |
TEST Shifts in Antarctic megabenthic structure after ice-shelf disintegration in the Larsen area east of the Antarctic Peninsula |
title_fullStr |
TEST Shifts in Antarctic megabenthic structure after ice-shelf disintegration in the Larsen area east of the Antarctic Peninsula |
title_full_unstemmed |
TEST Shifts in Antarctic megabenthic structure after ice-shelf disintegration in the Larsen area east of the Antarctic Peninsula |
title_sort |
test shifts in antarctic megabenthic structure after ice-shelf disintegration in the larsen area east of the antarctic peninsula |
publisher |
TESTSpringer Science and Business Media LLC |
publishDate |
2020 |
url |
https://epic.awi.de/id/eprint/33149/ https://hdl.handle.net/10013/epic.41662 |
long_lat |
ENVELOPE(9.914,9.914,63.019,63.019) |
geographic |
Antarctic Antarctic Peninsula Stripe The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Stripe The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Ice Shelf Polar Biology Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ice Shelf Polar Biology Sea ice |
op_source |
EPIC3Polar Biology, TESTSpringer Science and Business Media LLC, 36, pp. 895-906, ISSN: 0722-4060 |
op_relation |
Gutt, J. , Cape, M. , Dimmler, W. , Fillinger, L. , Isla, E. , Lieb, V. and Lundälv, T. (2020) TEST Shifts in Antarctic megabenthic structure after ice-shelf disintegration in the Larsen area east of the Antarctic Peninsula / . TEST (editor) , Polar Biology, TESTSpringer Science and Business Media LLC . hdl:10013/epic.41662 |
_version_ |
1771551084588826624 |