Approximating home ranges of humpback and fin whales in Drake Passage and Antarctica
Identifying home ranges—those areas traversed by individuals in their normal foraging, mating, and parenting activities—is an important aspect of cetacean study. Understanding these ranges facilitates identification of resource use and conservation. Fin and humpback whales occur in Antarctica during...
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ftarcticportal:oai:generic.eprints.org:2735 2023-12-10T09:38:59+01:00 Approximating home ranges of humpback and fin whales in Drake Passage and Antarctica Orgeira, José Luis Alvarez, Facundo 2020-12 application/pdf http://library.arcticportal.org/2735/ http://library.arcticportal.org/2735/1/A202004003.pdf en eng Polar Research Institute of China - PRIC http://library.arcticportal.org/2735/1/A202004003.pdf Orgeira, José Luis and Alvarez, Facundo (2020) Approximating home ranges of humpback and fin whales in Drake Passage and Antarctica. Advances in Polar Science, 31 (4). pp. 248-257. Fauna Oceans Article PeerReviewed 2020 ftarcticportal 2023-11-15T23:54:41Z Identifying home ranges—those areas traversed by individuals in their normal foraging, mating, and parenting activities—is an important aspect of cetacean study. Understanding these ranges facilitates identification of resource use and conservation. Fin and humpback whales occur in Antarctica during the austral summer, but information regarding their home ranges is limited. Using opportunistically collected whale sighting data from eight consecutive summer seasons spanning 2010–2017, we approximate the home ranges of humpback and fin whales around Drake Passage (DRA), West of Antarctic Peninsula (WAP), South Shetland Islands (SSI), an area northwest of the Weddell Sea (WED), and around the South Orkney Islands (SOI). Approximate home ranges are identified using Kernel Density Estimation (KDE). Most fin whales occurred north and northwest of the SOI, which suggests that waters near these islands support concentrations of this species. Most humpback whales were observed around the SSI, but unlike fin whales, their distributions were highly variable in other areas. KDE suggests spatial segregation in areas where both species exist such as SOI, SSI, and WPA. Partial redundancy analysis (pRDA) suggests that the distributions of these species are more affected by spatial variables (latitude, longitude) than by local scale variables such as sea surface temperature and depth. This study presents a visual approximation of the home ranges of fin and humpback whales, and identifies variation in the effects of space and environmental variables on the distributions of these whales at different spatial scales. Article in Journal/Newspaper Advances in Polar Science Antarc* Antarctic Antarctic Peninsula Antarctica Drake Passage Polar Science Polar Science South Orkney Islands South Shetland Islands Weddell Sea Arctic Portal Library Antarctic Antarctic Peninsula Weddell Sea Austral Drake Passage South Shetland Islands Weddell South Orkney Islands ENVELOPE(-45.500,-45.500,-60.583,-60.583) Soi ENVELOPE(30.704,30.704,66.481,66.481) |
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ftarcticportal |
language |
English |
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Fauna Oceans |
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Fauna Oceans Orgeira, José Luis Alvarez, Facundo Approximating home ranges of humpback and fin whales in Drake Passage and Antarctica |
topic_facet |
Fauna Oceans |
description |
Identifying home ranges—those areas traversed by individuals in their normal foraging, mating, and parenting activities—is an important aspect of cetacean study. Understanding these ranges facilitates identification of resource use and conservation. Fin and humpback whales occur in Antarctica during the austral summer, but information regarding their home ranges is limited. Using opportunistically collected whale sighting data from eight consecutive summer seasons spanning 2010–2017, we approximate the home ranges of humpback and fin whales around Drake Passage (DRA), West of Antarctic Peninsula (WAP), South Shetland Islands (SSI), an area northwest of the Weddell Sea (WED), and around the South Orkney Islands (SOI). Approximate home ranges are identified using Kernel Density Estimation (KDE). Most fin whales occurred north and northwest of the SOI, which suggests that waters near these islands support concentrations of this species. Most humpback whales were observed around the SSI, but unlike fin whales, their distributions were highly variable in other areas. KDE suggests spatial segregation in areas where both species exist such as SOI, SSI, and WPA. Partial redundancy analysis (pRDA) suggests that the distributions of these species are more affected by spatial variables (latitude, longitude) than by local scale variables such as sea surface temperature and depth. This study presents a visual approximation of the home ranges of fin and humpback whales, and identifies variation in the effects of space and environmental variables on the distributions of these whales at different spatial scales. |
format |
Article in Journal/Newspaper |
author |
Orgeira, José Luis Alvarez, Facundo |
author_facet |
Orgeira, José Luis Alvarez, Facundo |
author_sort |
Orgeira, José Luis |
title |
Approximating home ranges of humpback and fin whales in Drake Passage and Antarctica |
title_short |
Approximating home ranges of humpback and fin whales in Drake Passage and Antarctica |
title_full |
Approximating home ranges of humpback and fin whales in Drake Passage and Antarctica |
title_fullStr |
Approximating home ranges of humpback and fin whales in Drake Passage and Antarctica |
title_full_unstemmed |
Approximating home ranges of humpback and fin whales in Drake Passage and Antarctica |
title_sort |
approximating home ranges of humpback and fin whales in drake passage and antarctica |
publisher |
Polar Research Institute of China - PRIC |
publishDate |
2020 |
url |
http://library.arcticportal.org/2735/ http://library.arcticportal.org/2735/1/A202004003.pdf |
long_lat |
ENVELOPE(-45.500,-45.500,-60.583,-60.583) ENVELOPE(30.704,30.704,66.481,66.481) |
geographic |
Antarctic Antarctic Peninsula Weddell Sea Austral Drake Passage South Shetland Islands Weddell South Orkney Islands Soi |
geographic_facet |
Antarctic Antarctic Peninsula Weddell Sea Austral Drake Passage South Shetland Islands Weddell South Orkney Islands Soi |
genre |
Advances in Polar Science Antarc* Antarctic Antarctic Peninsula Antarctica Drake Passage Polar Science Polar Science South Orkney Islands South Shetland Islands Weddell Sea |
genre_facet |
Advances in Polar Science Antarc* Antarctic Antarctic Peninsula Antarctica Drake Passage Polar Science Polar Science South Orkney Islands South Shetland Islands Weddell Sea |
op_relation |
http://library.arcticportal.org/2735/1/A202004003.pdf Orgeira, José Luis and Alvarez, Facundo (2020) Approximating home ranges of humpback and fin whales in Drake Passage and Antarctica. Advances in Polar Science, 31 (4). pp. 248-257. |
_version_ |
1784892332137512960 |