Linking Antarctic krill larval supply and recruitment along the Antarctic Peninsula
Antarctic krill (Euphausia superba) larval production and overwinter survival drive recruitment variability, which in turn determines abundance trends. The Antarctic Peninsula has been described as a recruitment hot spot and as a potentially important source region for larval and juvenile krill disp...
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ftwilliammarycol:oai:scholarworks.wm.edu:vimsarticles-3016 2023-06-11T04:03:59+02:00 Linking Antarctic krill larval supply and recruitment along the Antarctic Peninsula Conroy, John A. Reiss, Christian S . Gleiber, Miram R . Steinberg, Deborah K. 2020-07-21T07:00:00Z application/pdf https://scholarworks.wm.edu/vimsarticles/2017 https://doi.org/10.1093/icb/icaa111 https://scholarworks.wm.edu/context/vimsarticles/article/3016/viewcontent/Conroy__Steinberg_et_al_2020_MS_IntCompBiol.pdf unknown W&M ScholarWorks https://scholarworks.wm.edu/vimsarticles/2017 doi: doi:10.1093/icb/icaa111 https://scholarworks.wm.edu/context/vimsarticles/article/3016/viewcontent/Conroy__Steinberg_et_al_2020_MS_IntCompBiol.pdf VIMS Articles Biological Sciences Peer-Reviewed Articles Marine Biology text 2020 ftwilliammarycol https://doi.org/10.1093/icb/icaa111</p>10.1093/icb/icaa111 2023-05-11T17:36:15Z Antarctic krill (Euphausia superba) larval production and overwinter survival drive recruitment variability, which in turn determines abundance trends. The Antarctic Peninsula has been described as a recruitment hot spot and as a potentially important source region for larval and juvenile krill dispersal. However, there has been no analysis to spatially resolve regional-scale krill population dynamics across life stages. We assessed spatiotemporal patterns in krill demography using two decades of austral summer data collected along the North and West Antarctic Peninsula since 1993. We identified persistent spatial segregation in the summer distribution of euphausiid larvae (E. superba plus other species), which were concentrated in oceanic waters along the continental slope, and E. superba recruits, which were concentrated in shelf and coastal waters. Mature females of E. superba were more abundant over the continental shelf than the slope or coast. Euphausiid larval abundance was relatively localized and weakly correlated between the North and West Antarctic Peninsula, while E. superba recruitment was generally synchronized throughout the entire region. Euphausiid larval abundance along the West Antarctic Peninsula slope explained E. superba recruitment in shelf and coastal waters the next year. Given the localized nature of krill productivity, it is critical to evaluate the connectivity between upstream and downstream areas of the Antarctic Peninsula and beyond. Krill fishery catch distributions and population projections in the context of a changing climate should account for ontogenetic habitat partitioning, regional population connectivity, and highly variable recruitment. Text Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba W&M ScholarWorks Antarctic Antarctic Peninsula Austral The Antarctic |
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Biological Sciences Peer-Reviewed Articles Marine Biology |
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Biological Sciences Peer-Reviewed Articles Marine Biology Conroy, John A. Reiss, Christian S . Gleiber, Miram R . Steinberg, Deborah K. Linking Antarctic krill larval supply and recruitment along the Antarctic Peninsula |
topic_facet |
Biological Sciences Peer-Reviewed Articles Marine Biology |
description |
Antarctic krill (Euphausia superba) larval production and overwinter survival drive recruitment variability, which in turn determines abundance trends. The Antarctic Peninsula has been described as a recruitment hot spot and as a potentially important source region for larval and juvenile krill dispersal. However, there has been no analysis to spatially resolve regional-scale krill population dynamics across life stages. We assessed spatiotemporal patterns in krill demography using two decades of austral summer data collected along the North and West Antarctic Peninsula since 1993. We identified persistent spatial segregation in the summer distribution of euphausiid larvae (E. superba plus other species), which were concentrated in oceanic waters along the continental slope, and E. superba recruits, which were concentrated in shelf and coastal waters. Mature females of E. superba were more abundant over the continental shelf than the slope or coast. Euphausiid larval abundance was relatively localized and weakly correlated between the North and West Antarctic Peninsula, while E. superba recruitment was generally synchronized throughout the entire region. Euphausiid larval abundance along the West Antarctic Peninsula slope explained E. superba recruitment in shelf and coastal waters the next year. Given the localized nature of krill productivity, it is critical to evaluate the connectivity between upstream and downstream areas of the Antarctic Peninsula and beyond. Krill fishery catch distributions and population projections in the context of a changing climate should account for ontogenetic habitat partitioning, regional population connectivity, and highly variable recruitment. |
format |
Text |
author |
Conroy, John A. Reiss, Christian S . Gleiber, Miram R . Steinberg, Deborah K. |
author_facet |
Conroy, John A. Reiss, Christian S . Gleiber, Miram R . Steinberg, Deborah K. |
author_sort |
Conroy, John A. |
title |
Linking Antarctic krill larval supply and recruitment along the Antarctic Peninsula |
title_short |
Linking Antarctic krill larval supply and recruitment along the Antarctic Peninsula |
title_full |
Linking Antarctic krill larval supply and recruitment along the Antarctic Peninsula |
title_fullStr |
Linking Antarctic krill larval supply and recruitment along the Antarctic Peninsula |
title_full_unstemmed |
Linking Antarctic krill larval supply and recruitment along the Antarctic Peninsula |
title_sort |
linking antarctic krill larval supply and recruitment along the antarctic peninsula |
publisher |
W&M ScholarWorks |
publishDate |
2020 |
url |
https://scholarworks.wm.edu/vimsarticles/2017 https://doi.org/10.1093/icb/icaa111 https://scholarworks.wm.edu/context/vimsarticles/article/3016/viewcontent/Conroy__Steinberg_et_al_2020_MS_IntCompBiol.pdf |
geographic |
Antarctic Antarctic Peninsula Austral The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Austral The Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba |
op_source |
VIMS Articles |
op_relation |
https://scholarworks.wm.edu/vimsarticles/2017 doi: doi:10.1093/icb/icaa111 https://scholarworks.wm.edu/context/vimsarticles/article/3016/viewcontent/Conroy__Steinberg_et_al_2020_MS_IntCompBiol.pdf |
op_doi |
https://doi.org/10.1093/icb/icaa111</p>10.1093/icb/icaa111 |
_version_ |
1768384785895391232 |