Long-term consistency of dispersal between two colonies of northern elephant seals ...
Dispersal drives extinction-recolonization dynamics of metapopulations and is necessary for endangered species to recolonize former ranges. Yet few studies quantify dispersal and even fewer examine consistency of dispersal over many years. The northern elephant seal (Mirounga angustirostris) provide...
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Online Access: | https://dx.doi.org/10.7291/d1ct1p https://datadryad.org/stash/dataset/doi:10.7291/D1CT1P |
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ftdatacite:10.7291/d1ct1p 2024-02-04T10:00:07+01:00 Long-term consistency of dispersal between two colonies of northern elephant seals ... Condit, Richard Hatfield, Brian 2023 https://dx.doi.org/10.7291/d1ct1p https://datadryad.org/stash/dataset/doi:10.7291/D1CT1P en eng Dryad Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 FOS Biological sciences Elephant seal dispersal marine mammal Dataset dataset 2023 ftdatacite https://doi.org/10.7291/d1ct1p 2024-01-05T04:51:50Z Dispersal drives extinction-recolonization dynamics of metapopulations and is necessary for endangered species to recolonize former ranges. Yet few studies quantify dispersal and even fewer examine consistency of dispersal over many years. The northern elephant seal (Mirounga angustirostris) provides an example of the importance of dispersal. It quickly recolonized its full range after near extirpation by 19th-century hunting, and though dispersal was observed it was not quantified. Here we enumerate lifetime dispersal events among female pups given permanent marks during 1994–2010 at two colonies, then correct for detection biases in estimating bidirectional dispersal rates. An average of 16% of females born at the Piedras Blancas colony dispersed northward 200 km to breed at Año Nuevo, while 8.0% of those born at Año Nuevo dispersed southward to Piedras Blancas. The northward rate fluctuated considerably but was higher than southward in 15 of 17 cohorts. The population at Piedras Blancas expanded 15-fold ... : Female elephant seals were marked soon after weaning by inserting plastic cattle tags into their flipper webbing. Numbers on tags identified age and birth place of each individual when observed as a breeding adult. Observations at both colonies were done regularly throughout every breeding season to locate and identify tagged seals. Dispersal was estimated for each birth cohort as the proportion observed breeding at the foreign colony to the total observed breeding. ... Dataset Elephant Seal Elephant Seals DataCite Metadata Store (German National Library of Science and Technology) Piedras ENVELOPE(-62.933,-62.933,-64.900,-64.900) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
English |
topic |
FOS Biological sciences Elephant seal dispersal marine mammal |
spellingShingle |
FOS Biological sciences Elephant seal dispersal marine mammal Condit, Richard Hatfield, Brian Long-term consistency of dispersal between two colonies of northern elephant seals ... |
topic_facet |
FOS Biological sciences Elephant seal dispersal marine mammal |
description |
Dispersal drives extinction-recolonization dynamics of metapopulations and is necessary for endangered species to recolonize former ranges. Yet few studies quantify dispersal and even fewer examine consistency of dispersal over many years. The northern elephant seal (Mirounga angustirostris) provides an example of the importance of dispersal. It quickly recolonized its full range after near extirpation by 19th-century hunting, and though dispersal was observed it was not quantified. Here we enumerate lifetime dispersal events among female pups given permanent marks during 1994–2010 at two colonies, then correct for detection biases in estimating bidirectional dispersal rates. An average of 16% of females born at the Piedras Blancas colony dispersed northward 200 km to breed at Año Nuevo, while 8.0% of those born at Año Nuevo dispersed southward to Piedras Blancas. The northward rate fluctuated considerably but was higher than southward in 15 of 17 cohorts. The population at Piedras Blancas expanded 15-fold ... : Female elephant seals were marked soon after weaning by inserting plastic cattle tags into their flipper webbing. Numbers on tags identified age and birth place of each individual when observed as a breeding adult. Observations at both colonies were done regularly throughout every breeding season to locate and identify tagged seals. Dispersal was estimated for each birth cohort as the proportion observed breeding at the foreign colony to the total observed breeding. ... |
format |
Dataset |
author |
Condit, Richard Hatfield, Brian |
author_facet |
Condit, Richard Hatfield, Brian |
author_sort |
Condit, Richard |
title |
Long-term consistency of dispersal between two colonies of northern elephant seals ... |
title_short |
Long-term consistency of dispersal between two colonies of northern elephant seals ... |
title_full |
Long-term consistency of dispersal between two colonies of northern elephant seals ... |
title_fullStr |
Long-term consistency of dispersal between two colonies of northern elephant seals ... |
title_full_unstemmed |
Long-term consistency of dispersal between two colonies of northern elephant seals ... |
title_sort |
long-term consistency of dispersal between two colonies of northern elephant seals ... |
publisher |
Dryad |
publishDate |
2023 |
url |
https://dx.doi.org/10.7291/d1ct1p https://datadryad.org/stash/dataset/doi:10.7291/D1CT1P |
long_lat |
ENVELOPE(-62.933,-62.933,-64.900,-64.900) |
geographic |
Piedras |
geographic_facet |
Piedras |
genre |
Elephant Seal Elephant Seals |
genre_facet |
Elephant Seal Elephant Seals |
op_rights |
Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 |
op_doi |
https://doi.org/10.7291/d1ct1p |
_version_ |
1789965251894050816 |