Census of birdlife in Vigur Island, Westfjords, Iceland
Known for its exceptional biodiversity, Vigur Island (Westfjords, Iceland) welcomes several bird colonies each year. This 2 km long, 400 m wide island also hosts an eiderdown farm and touristic visits from late June to September. Hence, the aim of the 2021 summer research campaign was to estimate th...
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ftunivnantes:oai:HAL:hal-03654682v1 2023-05-15T14:53:44+02:00 Census of birdlife in Vigur Island, Westfjords, Iceland Recensement de l'avifaune de l'île de Vigur, Westfjords, Islande Skráning fuglalífs á Vigur í vestfjörðum, Íslandi Milesi-Gaches, David Lhériau, Alexandre Auteur indépendant Vigur Island Research Campaign 2022 https://hal.archives-ouvertes.fr/hal-03654682 en eng HAL CCSD hal-03654682 https://hal.archives-ouvertes.fr/hal-03654682 http://creativecommons.org/licenses/by-sa/ CC-BY-SA https://hal.archives-ouvertes.fr/hal-03654682 [Research Report] Vigur Island Research Campaign. 2022 Arctic Ecology marine ecology Cormorants and Shags oystercatchers iceland vigur birdlife puffin guillemot fulmar eider duck tourism wildlife westfjords Terns oiseaux nature tourisme écologie écologie marine Islande fjords de l'Ouest macareux guillemots à miroir fulmars cormorans sternes arctiques canards Eider huîtriers pie goélands Ísafjorður Súðavík fugl dýralíf teista fýla dílaskarfa silfur- og sílamáva tjalda lunda kría Ísland [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID]Life Sciences [q-bio]/Biodiversity [SDV.EE]Life Sciences [q-bio]/Ecology environment [SHS.ENVIR]Humanities and Social Sciences/Environmental studies info:eu-repo/semantics/report Reports 2022 ftunivnantes 2022-10-04T23:20:49Z Known for its exceptional biodiversity, Vigur Island (Westfjords, Iceland) welcomes several bird colonies each year. This 2 km long, 400 m wide island also hosts an eiderdown farm and touristic visits from late June to September. Hence, the aim of the 2021 summer research campaign was to estimate the population of different bird species, and to establish their abundance in order to create a valuable database that could be used for further research and monitoring. The bird census was conducted both on land and sea, as far as permitted, with the use of binoculars. We focused on the main bird species found on the island: black guillemots, Northern fulmars, great cormorants, both Herring and Lesser black-backed gulls, Eurasian oystercatchers, and Arctic terns. Atlantic puffins were very common on the island, but no count was made for this species. The Arctic tern population was estimated by dividing the land into square units and subsequently counting nests using the line-over-line method. More precisely, the Arctic tern colony population was estimated using a transect line method (20 x 30m units). Due to the hatching of the eggs, the survey had to be stopped and only covered 60% of the colony area. Other species were counted by two observers following the coast of the island 5 times, with a maximum of two days apart. Gulls were counted together to avoid likely misidentifications. Potential differences among observers were addressed through a Wilcoxon-Mann-Whitney test for all bird species. The results show that in summer 2021, Vigur potentially hosted 1092±246 black guillemots, 28±8 oystercatchers, 19±8 cormorants, 120±34 fulmars, and 58±20 gulls. We counted 440 occupied Arctic tern nests, leading to an estimation of 880 breeding adults. The guillemot population has increased up to threefold over previous or local estimates (Náttrufristofnun Islands, 2021b). Comparison for the other species was impossible, as no counts were previously conducted. This report also details difficulties and specificities linked to the ... Report Arctic Arctic tern Arctique* Iceland Islande Vigur Université de Nantes: HAL-UNIV-NANTES Arctic Fulmar ENVELOPE(-46.016,-46.016,-60.616,-60.616) Lunda ENVELOPE(9.649,9.649,63.611,63.611) Súðavík ENVELOPE(-22.986,-22.986,66.038,66.038) Vigur ENVELOPE(-14.750,-14.750,64.349,64.349) |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Arctic Ecology marine ecology Cormorants and Shags oystercatchers iceland vigur birdlife puffin guillemot fulmar eider duck tourism wildlife westfjords Terns oiseaux nature tourisme écologie écologie marine Islande fjords de l'Ouest macareux guillemots à miroir fulmars cormorans sternes arctiques canards Eider huîtriers pie goélands Ísafjorður Súðavík fugl dýralíf teista fýla dílaskarfa silfur- og sílamáva tjalda lunda kría Ísland [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID]Life Sciences [q-bio]/Biodiversity [SDV.EE]Life Sciences [q-bio]/Ecology environment [SHS.ENVIR]Humanities and Social Sciences/Environmental studies |
spellingShingle |
Arctic Ecology marine ecology Cormorants and Shags oystercatchers iceland vigur birdlife puffin guillemot fulmar eider duck tourism wildlife westfjords Terns oiseaux nature tourisme écologie écologie marine Islande fjords de l'Ouest macareux guillemots à miroir fulmars cormorans sternes arctiques canards Eider huîtriers pie goélands Ísafjorður Súðavík fugl dýralíf teista fýla dílaskarfa silfur- og sílamáva tjalda lunda kría Ísland [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID]Life Sciences [q-bio]/Biodiversity [SDV.EE]Life Sciences [q-bio]/Ecology environment [SHS.ENVIR]Humanities and Social Sciences/Environmental studies Milesi-Gaches, David Lhériau, Alexandre Census of birdlife in Vigur Island, Westfjords, Iceland |
topic_facet |
Arctic Ecology marine ecology Cormorants and Shags oystercatchers iceland vigur birdlife puffin guillemot fulmar eider duck tourism wildlife westfjords Terns oiseaux nature tourisme écologie écologie marine Islande fjords de l'Ouest macareux guillemots à miroir fulmars cormorans sternes arctiques canards Eider huîtriers pie goélands Ísafjorður Súðavík fugl dýralíf teista fýla dílaskarfa silfur- og sílamáva tjalda lunda kría Ísland [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID]Life Sciences [q-bio]/Biodiversity [SDV.EE]Life Sciences [q-bio]/Ecology environment [SHS.ENVIR]Humanities and Social Sciences/Environmental studies |
description |
Known for its exceptional biodiversity, Vigur Island (Westfjords, Iceland) welcomes several bird colonies each year. This 2 km long, 400 m wide island also hosts an eiderdown farm and touristic visits from late June to September. Hence, the aim of the 2021 summer research campaign was to estimate the population of different bird species, and to establish their abundance in order to create a valuable database that could be used for further research and monitoring. The bird census was conducted both on land and sea, as far as permitted, with the use of binoculars. We focused on the main bird species found on the island: black guillemots, Northern fulmars, great cormorants, both Herring and Lesser black-backed gulls, Eurasian oystercatchers, and Arctic terns. Atlantic puffins were very common on the island, but no count was made for this species. The Arctic tern population was estimated by dividing the land into square units and subsequently counting nests using the line-over-line method. More precisely, the Arctic tern colony population was estimated using a transect line method (20 x 30m units). Due to the hatching of the eggs, the survey had to be stopped and only covered 60% of the colony area. Other species were counted by two observers following the coast of the island 5 times, with a maximum of two days apart. Gulls were counted together to avoid likely misidentifications. Potential differences among observers were addressed through a Wilcoxon-Mann-Whitney test for all bird species. The results show that in summer 2021, Vigur potentially hosted 1092±246 black guillemots, 28±8 oystercatchers, 19±8 cormorants, 120±34 fulmars, and 58±20 gulls. We counted 440 occupied Arctic tern nests, leading to an estimation of 880 breeding adults. The guillemot population has increased up to threefold over previous or local estimates (Náttrufristofnun Islands, 2021b). Comparison for the other species was impossible, as no counts were previously conducted. This report also details difficulties and specificities linked to the ... |
author2 |
Auteur indépendant Vigur Island Research Campaign |
format |
Report |
author |
Milesi-Gaches, David Lhériau, Alexandre |
author_facet |
Milesi-Gaches, David Lhériau, Alexandre |
author_sort |
Milesi-Gaches, David |
title |
Census of birdlife in Vigur Island, Westfjords, Iceland |
title_short |
Census of birdlife in Vigur Island, Westfjords, Iceland |
title_full |
Census of birdlife in Vigur Island, Westfjords, Iceland |
title_fullStr |
Census of birdlife in Vigur Island, Westfjords, Iceland |
title_full_unstemmed |
Census of birdlife in Vigur Island, Westfjords, Iceland |
title_sort |
census of birdlife in vigur island, westfjords, iceland |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.archives-ouvertes.fr/hal-03654682 |
long_lat |
ENVELOPE(-46.016,-46.016,-60.616,-60.616) ENVELOPE(9.649,9.649,63.611,63.611) ENVELOPE(-22.986,-22.986,66.038,66.038) ENVELOPE(-14.750,-14.750,64.349,64.349) |
geographic |
Arctic Fulmar Lunda Súðavík Vigur |
geographic_facet |
Arctic Fulmar Lunda Súðavík Vigur |
genre |
Arctic Arctic tern Arctique* Iceland Islande Vigur |
genre_facet |
Arctic Arctic tern Arctique* Iceland Islande Vigur |
op_source |
https://hal.archives-ouvertes.fr/hal-03654682 [Research Report] Vigur Island Research Campaign. 2022 |
op_relation |
hal-03654682 https://hal.archives-ouvertes.fr/hal-03654682 |
op_rights |
http://creativecommons.org/licenses/by-sa/ |
op_rightsnorm |
CC-BY-SA |
_version_ |
1766325314963636224 |