Photographic Catalog of Humpback Whales in Prince William Sound, Alaska: 2006 - 2009, 2011-2012
Pacific herring (Clupea pallasi) in Prince William Sound (PWS) have been classified as "not-recovered" by the Exxon Valdez Oil Spill Trustee Council. Predation by marine mammals has been cited as a factor in the failure of this population to rebound. We will assess the significance of hump...
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dataone:df35d.398.6 2024-10-03T18:46:10+00:00 Photographic Catalog of Humpback Whales in Prince William Sound, Alaska: 2006 - 2009, 2011-2012 Jan Straley John Moran Gulf of Alaska ENVELOPE(-159.6,-133.9,61.22,57.57) BEGINDATE: 2006-11-02T00:00:00Z ENDDATE: 2009-11-17T00:00:00Z 2013-09-27T23:00:00Z https://search.dataone.org/view/df35d.398.6 unknown Gulf of Alaska Data Portal population catalog Prince William Sound Humpback whale photograph EVOSTC Exxon Valdez Oil Spill Trustee Council EVOS Gulf Watch Projects Oil Spill Exxon Valdez Alaska Pelagic Mammals Imagery Clupea pallasi Megaptera novaeangliae pallasi novaeangliae Dataset dataone:urn:node:GOA 2024-10-03T18:06:28Z Pacific herring (Clupea pallasi) in Prince William Sound (PWS) have been classified as "not-recovered" by the Exxon Valdez Oil Spill Trustee Council. Predation by marine mammals has been cited as a factor in the failure of this population to rebound. We will assess the significance of humpback whale predation on herring in PWS, particularly in winter. Specifically we will estimate the number of whales foraging in winter, determine when and if there is a prey switch to herring, and how long whales focus on herring as prey. Year one was funded, small in scale with an intense monitoring strategy; year 2 would expand the scale up in area significantly. Year 3 will verify the impact on herring of the high numbers of humpback whales we observed in PWS during year 2. These data will be combined in a bioenergetic model to determine numbers of herring consumed (and energy content consumed). Lastly, the estimated numbers of herring consumed would be included in an age-structured model so that the significance of whale predation on herring recovery can be evaluated. Year 4 (2010) will close out the project with the completion of analysis, reports, and manuscripts. This data set focuses on the humpback whale surveys including survey effort, whale identification, photo quality, whale behavior, prey items and tissue samples. Dataset Humpback Whale Megaptera novaeangliae Alaska Gulf of Alaska Data Portal (via DataONE) Gulf of Alaska Pacific ENVELOPE(-159.6,-133.9,61.22,57.57) |
institution |
Open Polar |
collection |
Gulf of Alaska Data Portal (via DataONE) |
op_collection_id |
dataone:urn:node:GOA |
language |
unknown |
topic |
population catalog Prince William Sound Humpback whale photograph EVOSTC Exxon Valdez Oil Spill Trustee Council EVOS Gulf Watch Projects Oil Spill Exxon Valdez Alaska Pelagic Mammals Imagery Clupea pallasi Megaptera novaeangliae pallasi novaeangliae |
spellingShingle |
population catalog Prince William Sound Humpback whale photograph EVOSTC Exxon Valdez Oil Spill Trustee Council EVOS Gulf Watch Projects Oil Spill Exxon Valdez Alaska Pelagic Mammals Imagery Clupea pallasi Megaptera novaeangliae pallasi novaeangliae Jan Straley John Moran Photographic Catalog of Humpback Whales in Prince William Sound, Alaska: 2006 - 2009, 2011-2012 |
topic_facet |
population catalog Prince William Sound Humpback whale photograph EVOSTC Exxon Valdez Oil Spill Trustee Council EVOS Gulf Watch Projects Oil Spill Exxon Valdez Alaska Pelagic Mammals Imagery Clupea pallasi Megaptera novaeangliae pallasi novaeangliae |
description |
Pacific herring (Clupea pallasi) in Prince William Sound (PWS) have been classified as "not-recovered" by the Exxon Valdez Oil Spill Trustee Council. Predation by marine mammals has been cited as a factor in the failure of this population to rebound. We will assess the significance of humpback whale predation on herring in PWS, particularly in winter. Specifically we will estimate the number of whales foraging in winter, determine when and if there is a prey switch to herring, and how long whales focus on herring as prey. Year one was funded, small in scale with an intense monitoring strategy; year 2 would expand the scale up in area significantly. Year 3 will verify the impact on herring of the high numbers of humpback whales we observed in PWS during year 2. These data will be combined in a bioenergetic model to determine numbers of herring consumed (and energy content consumed). Lastly, the estimated numbers of herring consumed would be included in an age-structured model so that the significance of whale predation on herring recovery can be evaluated. Year 4 (2010) will close out the project with the completion of analysis, reports, and manuscripts. This data set focuses on the humpback whale surveys including survey effort, whale identification, photo quality, whale behavior, prey items and tissue samples. |
format |
Dataset |
author |
Jan Straley John Moran |
author_facet |
Jan Straley John Moran |
author_sort |
Jan Straley |
title |
Photographic Catalog of Humpback Whales in Prince William Sound, Alaska: 2006 - 2009, 2011-2012 |
title_short |
Photographic Catalog of Humpback Whales in Prince William Sound, Alaska: 2006 - 2009, 2011-2012 |
title_full |
Photographic Catalog of Humpback Whales in Prince William Sound, Alaska: 2006 - 2009, 2011-2012 |
title_fullStr |
Photographic Catalog of Humpback Whales in Prince William Sound, Alaska: 2006 - 2009, 2011-2012 |
title_full_unstemmed |
Photographic Catalog of Humpback Whales in Prince William Sound, Alaska: 2006 - 2009, 2011-2012 |
title_sort |
photographic catalog of humpback whales in prince william sound, alaska: 2006 - 2009, 2011-2012 |
publisher |
Gulf of Alaska Data Portal |
publishDate |
|
url |
https://search.dataone.org/view/df35d.398.6 |
op_coverage |
Gulf of Alaska ENVELOPE(-159.6,-133.9,61.22,57.57) BEGINDATE: 2006-11-02T00:00:00Z ENDDATE: 2009-11-17T00:00:00Z |
long_lat |
ENVELOPE(-159.6,-133.9,61.22,57.57) |
geographic |
Gulf of Alaska Pacific |
geographic_facet |
Gulf of Alaska Pacific |
genre |
Humpback Whale Megaptera novaeangliae Alaska |
genre_facet |
Humpback Whale Megaptera novaeangliae Alaska |
_version_ |
1811925367888281600 |