Trophic Levels of North Pacific Humpback Whales (Megaptera novaeangliae) Through Analysis of Stable Isotopes: Implications on Prey and Resource Quality
Trophic levels of 1,105 humpback whales from six geographically and isotopically distinct North Pacific feeding groups were calculated using δ15N of humpback whales and regional primary consumers. The overall mean trophic level for North Pacific humpback whales was 3.6 ± 0.02, indicating a diet of b...
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ftnsoutheastern:oai:nsuworks.nova.edu:occ_facarticles-1780 2023-05-15T17:10:47+02:00 Trophic Levels of North Pacific Humpback Whales (Megaptera novaeangliae) Through Analysis of Stable Isotopes: Implications on Prey and Resource Quality Witteveen, Briana H. Worthy, Graham A. J. Wynne, Kate M. Hirons, Amy Andrews, Alexander G., III Markel, Russell W. 2011-06-01T07:00:00Z https://nsuworks.nova.edu/occ_facarticles/775 unknown NSUWorks https://nsuworks.nova.edu/occ_facarticles/775 Marine & Environmental Sciences Faculty Articles North Pacific Prey quality Stable isotopes Trophic level Humpback whales Megaptera novaeangliae Marine Biology Oceanography and Atmospheric Sciences and Meteorology article 2011 ftnsoutheastern 2022-04-10T21:45:49Z Trophic levels of 1,105 humpback whales from six geographically and isotopically distinct North Pacific feeding groups were calculated using δ15N of humpback whales and regional primary consumers. The overall mean trophic level for North Pacific humpback whales was 3.6 ± 0.02, indicating a diet of both fish and zooplankton, and, thus, supporting assumptions of humpback whales as generalist predators. The highest mean trophic level was calculated for the north Gulf of Alaska group (4.0 ± 0.03), while the lowest was found for the Russian and the western Aleutian Islands group (3.3 ± 0.08). Differences in mean trophic levels suggest that feeding groups differ in the proportion of fish and zooplankton in their diets. Article in Journal/Newspaper Megaptera novaeangliae Alaska Aleutian Islands Nova Southeastern University: NSU Works Gulf of Alaska Pacific |
institution |
Open Polar |
collection |
Nova Southeastern University: NSU Works |
op_collection_id |
ftnsoutheastern |
language |
unknown |
topic |
North Pacific Prey quality Stable isotopes Trophic level Humpback whales Megaptera novaeangliae Marine Biology Oceanography and Atmospheric Sciences and Meteorology |
spellingShingle |
North Pacific Prey quality Stable isotopes Trophic level Humpback whales Megaptera novaeangliae Marine Biology Oceanography and Atmospheric Sciences and Meteorology Witteveen, Briana H. Worthy, Graham A. J. Wynne, Kate M. Hirons, Amy Andrews, Alexander G., III Markel, Russell W. Trophic Levels of North Pacific Humpback Whales (Megaptera novaeangliae) Through Analysis of Stable Isotopes: Implications on Prey and Resource Quality |
topic_facet |
North Pacific Prey quality Stable isotopes Trophic level Humpback whales Megaptera novaeangliae Marine Biology Oceanography and Atmospheric Sciences and Meteorology |
description |
Trophic levels of 1,105 humpback whales from six geographically and isotopically distinct North Pacific feeding groups were calculated using δ15N of humpback whales and regional primary consumers. The overall mean trophic level for North Pacific humpback whales was 3.6 ± 0.02, indicating a diet of both fish and zooplankton, and, thus, supporting assumptions of humpback whales as generalist predators. The highest mean trophic level was calculated for the north Gulf of Alaska group (4.0 ± 0.03), while the lowest was found for the Russian and the western Aleutian Islands group (3.3 ± 0.08). Differences in mean trophic levels suggest that feeding groups differ in the proportion of fish and zooplankton in their diets. |
format |
Article in Journal/Newspaper |
author |
Witteveen, Briana H. Worthy, Graham A. J. Wynne, Kate M. Hirons, Amy Andrews, Alexander G., III Markel, Russell W. |
author_facet |
Witteveen, Briana H. Worthy, Graham A. J. Wynne, Kate M. Hirons, Amy Andrews, Alexander G., III Markel, Russell W. |
author_sort |
Witteveen, Briana H. |
title |
Trophic Levels of North Pacific Humpback Whales (Megaptera novaeangliae) Through Analysis of Stable Isotopes: Implications on Prey and Resource Quality |
title_short |
Trophic Levels of North Pacific Humpback Whales (Megaptera novaeangliae) Through Analysis of Stable Isotopes: Implications on Prey and Resource Quality |
title_full |
Trophic Levels of North Pacific Humpback Whales (Megaptera novaeangliae) Through Analysis of Stable Isotopes: Implications on Prey and Resource Quality |
title_fullStr |
Trophic Levels of North Pacific Humpback Whales (Megaptera novaeangliae) Through Analysis of Stable Isotopes: Implications on Prey and Resource Quality |
title_full_unstemmed |
Trophic Levels of North Pacific Humpback Whales (Megaptera novaeangliae) Through Analysis of Stable Isotopes: Implications on Prey and Resource Quality |
title_sort |
trophic levels of north pacific humpback whales (megaptera novaeangliae) through analysis of stable isotopes: implications on prey and resource quality |
publisher |
NSUWorks |
publishDate |
2011 |
url |
https://nsuworks.nova.edu/occ_facarticles/775 |
geographic |
Gulf of Alaska Pacific |
geographic_facet |
Gulf of Alaska Pacific |
genre |
Megaptera novaeangliae Alaska Aleutian Islands |
genre_facet |
Megaptera novaeangliae Alaska Aleutian Islands |
op_source |
Marine & Environmental Sciences Faculty Articles |
op_relation |
https://nsuworks.nova.edu/occ_facarticles/775 |
_version_ |
1766067436036030464 |