Difference in distribution between the White-tailed eagle and the Steller's sea eagle on their wintering grounds. : On Hokkaido, Japan.
The White-tailed eagle (H. albicilla) and the Steller's sea eagle (H. pelagicus) overwinter in the same region of Japan: North-western Hokkaido. To examine how and if these two species compete at their overwintering grounds the following questions were asked: are they evenly distributed over th...
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Uppsala universitet, Institutionen för biologisk grundutbildning
2021
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ftuppsalauniv:oai:DiVA.org:uu-434993 2023-05-15T18:44:06+02:00 Difference in distribution between the White-tailed eagle and the Steller's sea eagle on their wintering grounds. : On Hokkaido, Japan. Eusebi, Bruno 2021 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-434993 eng eng Uppsala universitet, Institutionen för biologisk grundutbildning http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-434993 info:eu-repo/semantics/openAccess Haliaeetus eagle steller sea white tailed distribution winter japan competition food resource interaction Ecology Ekologi Other Biological Topics Annan biologi Student thesis info:eu-repo/semantics/bachelorThesis text 2021 ftuppsalauniv 2023-02-23T21:54:43Z The White-tailed eagle (H. albicilla) and the Steller's sea eagle (H. pelagicus) overwinter in the same region of Japan: North-western Hokkaido. To examine how and if these two species compete at their overwintering grounds the following questions were asked: are they evenly distributed over this region and do they compete over space and resources? For the period 2015-2019, I found that the two species were not evenly distributed over the region, and that H. pelagicus is the most common species and does occur over the whole area. At a more detailed study at Lake Abashiri performed in 2019-2020, results showed that H. albicilla was the most common species, and that the distribution of the eagles was determined by the availability of food from anthropogenic activity. The species competed for food resource, fish, and H. pelagicus was the stronger competitor in terms of attacks against heterospecifics. They were less aggressive, but more successful when attacking compared to the White-tailed eagle. Bachelor Thesis White-tailed eagle Uppsala University: Publications (DiVA) |
institution |
Open Polar |
collection |
Uppsala University: Publications (DiVA) |
op_collection_id |
ftuppsalauniv |
language |
English |
topic |
Haliaeetus eagle steller sea white tailed distribution winter japan competition food resource interaction Ecology Ekologi Other Biological Topics Annan biologi |
spellingShingle |
Haliaeetus eagle steller sea white tailed distribution winter japan competition food resource interaction Ecology Ekologi Other Biological Topics Annan biologi Eusebi, Bruno Difference in distribution between the White-tailed eagle and the Steller's sea eagle on their wintering grounds. : On Hokkaido, Japan. |
topic_facet |
Haliaeetus eagle steller sea white tailed distribution winter japan competition food resource interaction Ecology Ekologi Other Biological Topics Annan biologi |
description |
The White-tailed eagle (H. albicilla) and the Steller's sea eagle (H. pelagicus) overwinter in the same region of Japan: North-western Hokkaido. To examine how and if these two species compete at their overwintering grounds the following questions were asked: are they evenly distributed over this region and do they compete over space and resources? For the period 2015-2019, I found that the two species were not evenly distributed over the region, and that H. pelagicus is the most common species and does occur over the whole area. At a more detailed study at Lake Abashiri performed in 2019-2020, results showed that H. albicilla was the most common species, and that the distribution of the eagles was determined by the availability of food from anthropogenic activity. The species competed for food resource, fish, and H. pelagicus was the stronger competitor in terms of attacks against heterospecifics. They were less aggressive, but more successful when attacking compared to the White-tailed eagle. |
format |
Bachelor Thesis |
author |
Eusebi, Bruno |
author_facet |
Eusebi, Bruno |
author_sort |
Eusebi, Bruno |
title |
Difference in distribution between the White-tailed eagle and the Steller's sea eagle on their wintering grounds. : On Hokkaido, Japan. |
title_short |
Difference in distribution between the White-tailed eagle and the Steller's sea eagle on their wintering grounds. : On Hokkaido, Japan. |
title_full |
Difference in distribution between the White-tailed eagle and the Steller's sea eagle on their wintering grounds. : On Hokkaido, Japan. |
title_fullStr |
Difference in distribution between the White-tailed eagle and the Steller's sea eagle on their wintering grounds. : On Hokkaido, Japan. |
title_full_unstemmed |
Difference in distribution between the White-tailed eagle and the Steller's sea eagle on their wintering grounds. : On Hokkaido, Japan. |
title_sort |
difference in distribution between the white-tailed eagle and the steller's sea eagle on their wintering grounds. : on hokkaido, japan. |
publisher |
Uppsala universitet, Institutionen för biologisk grundutbildning |
publishDate |
2021 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-434993 |
genre |
White-tailed eagle |
genre_facet |
White-tailed eagle |
op_relation |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-434993 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766234658448605184 |