Killer Whales and Carrying Capacity: Is There Anymore Room at the Top?
Apex predators occupy a unique and important role in the marine food web. Free ranging transient killer whales feed primarily on other marine mammals, making them extremely unique in their communities and in the ecosystem as a whole. We propose that the marine ecosystem cannot support viable populat...
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ftcoastcarolinau:oai:digitalcommons.coastal.edu:honors-theses-1251 2023-05-15T17:03:29+02:00 Killer Whales and Carrying Capacity: Is There Anymore Room at the Top? McDonnell, Caitlin Clare 2003-04-01T08:00:00Z application/pdf https://digitalcommons.coastal.edu/honors-theses/252 https://digitalcommons.coastal.edu/cgi/viewcontent.cgi?article=1251&context=honors-theses unknown CCU Digital Commons https://digitalcommons.coastal.edu/honors-theses/252 https://digitalcommons.coastal.edu/cgi/viewcontent.cgi?article=1251&context=honors-theses http://creativecommons.org/licenses/by-nc-nd/4.0/ CC-BY-NC-ND Honors Theses Marine food web killer whales feeding habits species distribution Oceanography legacy_thesis 2003 ftcoastcarolinau 2022-01-06T11:04:24Z Apex predators occupy a unique and important role in the marine food web. Free ranging transient killer whales feed primarily on other marine mammals, making them extremely unique in their communities and in the ecosystem as a whole. We propose that the marine ecosystem cannot support viable populations of an additional similar species at the same trophic level as killer whales. We estimated the maximum number of killer whales that could be supported by the marine ecosystem, based on estimates of annual global oceanic primary production, trophic transfer rates, and the trophic level of killer whales. The estimated population of killer whales would be 6.3 million if all primary production went toward supporting only this species at trophic level 5. Actual global population estimates for killer whales are between 10 and 15% of this value. We will consider a number of variables in discussing whether there is room for another similar species at the top. These include the distribution of primary production on a global basis relative to the size and range of viable killer whale populations, competition with other apex predators, and variability in feeding habits of killer whale populations. Other/Unknown Material Killer Whale Killer whale Coastal Carolina University: CCU Digital Commons |
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Coastal Carolina University: CCU Digital Commons |
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ftcoastcarolinau |
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Marine food web killer whales feeding habits species distribution Oceanography |
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Marine food web killer whales feeding habits species distribution Oceanography McDonnell, Caitlin Clare Killer Whales and Carrying Capacity: Is There Anymore Room at the Top? |
topic_facet |
Marine food web killer whales feeding habits species distribution Oceanography |
description |
Apex predators occupy a unique and important role in the marine food web. Free ranging transient killer whales feed primarily on other marine mammals, making them extremely unique in their communities and in the ecosystem as a whole. We propose that the marine ecosystem cannot support viable populations of an additional similar species at the same trophic level as killer whales. We estimated the maximum number of killer whales that could be supported by the marine ecosystem, based on estimates of annual global oceanic primary production, trophic transfer rates, and the trophic level of killer whales. The estimated population of killer whales would be 6.3 million if all primary production went toward supporting only this species at trophic level 5. Actual global population estimates for killer whales are between 10 and 15% of this value. We will consider a number of variables in discussing whether there is room for another similar species at the top. These include the distribution of primary production on a global basis relative to the size and range of viable killer whale populations, competition with other apex predators, and variability in feeding habits of killer whale populations. |
format |
Other/Unknown Material |
author |
McDonnell, Caitlin Clare |
author_facet |
McDonnell, Caitlin Clare |
author_sort |
McDonnell, Caitlin Clare |
title |
Killer Whales and Carrying Capacity: Is There Anymore Room at the Top? |
title_short |
Killer Whales and Carrying Capacity: Is There Anymore Room at the Top? |
title_full |
Killer Whales and Carrying Capacity: Is There Anymore Room at the Top? |
title_fullStr |
Killer Whales and Carrying Capacity: Is There Anymore Room at the Top? |
title_full_unstemmed |
Killer Whales and Carrying Capacity: Is There Anymore Room at the Top? |
title_sort |
killer whales and carrying capacity: is there anymore room at the top? |
publisher |
CCU Digital Commons |
publishDate |
2003 |
url |
https://digitalcommons.coastal.edu/honors-theses/252 https://digitalcommons.coastal.edu/cgi/viewcontent.cgi?article=1251&context=honors-theses |
genre |
Killer Whale Killer whale |
genre_facet |
Killer Whale Killer whale |
op_source |
Honors Theses |
op_relation |
https://digitalcommons.coastal.edu/honors-theses/252 https://digitalcommons.coastal.edu/cgi/viewcontent.cgi?article=1251&context=honors-theses |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766057366262906880 |