Estimating little auk (Alle alle) breeding density and chick-feeding rate using video surveillance
High Arctic ecosystems are under change and need to be monitored. We studied little auks (Alle alle), the most abundant seabird in the North Atlantic, in their main breeding area in the North Water Polynya region of High-Arctic north-west Greenland. We developed a method for estimating breeding dens...
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Norwegian Polar Institute
2017
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Online Access: | https://doi.org/10.1080/17518369.2017.1374122 https://doaj.org/article/6e1f4e4eb615448e84fe063e847f044d |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:6e1f4e4eb615448e84fe063e847f044d 2023-05-15T13:16:14+02:00 Estimating little auk (Alle alle) breeding density and chick-feeding rate using video surveillance Anders Mosbech Peter Lyngs Kasper Lambert Johansen 2017-01-01 https://doi.org/10.1080/17518369.2017.1374122 https://doaj.org/article/6e1f4e4eb615448e84fe063e847f044d en eng Norwegian Polar Institute 1751-8369 doi:10.1080/17518369.2017.1374122 https://doaj.org/article/6e1f4e4eb615448e84fe063e847f044d undefined Polar Research, Vol 36, Iss 1 (2017) Seabird colony monitoring methods seabird ecology north-west Greenland North Water Polynya High Arctic envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2017 fttriple https://doi.org/10.1080/17518369.2017.1374122 2023-01-22T19:25:40Z High Arctic ecosystems are under change and need to be monitored. We studied little auks (Alle alle), the most abundant seabird in the North Atlantic, in their main breeding area in the North Water Polynya region of High-Arctic north-west Greenland. We developed a method for estimating breeding density and chick-feeding rate based on video surveillance. As the nests of little auks are secluded between rocks and cannot be directly observed, the method rests on detailed recording of feeding events, when parent birds arrive from the sea with filled gular pouches and disappear into the scree to feed their chicks, supplemented with recording of fledging and pre-fledging behaviour of chicks outside the nesting holes. We installed video cameras in two study plots during the late chick-rearing and fledging periods 2 – 11 August 2012 and 5 – 12 August 2013, and the method proved useful for estimating the density of active nests immediately prior to fledging (which corresponds roughly to productivity of fledglings/m2). The densities of active nests for the two plots in 2012 and 2013 ranged between 1.06 and 1.63 nests/m2, and an average of 9.1 feeds/chick/day (n = 8 pairs, 3 × 24 h, 219 feedings) was recorded for this late stage of the chick-rearing period. Our video surveillance method has advantages over the mark–resight methods and other techniques used to monitor little auk colonies. Article in Journal/Newspaper Alle alle Arctic Greenland little auk North Atlantic Polar Research Unknown Arctic Greenland Polar Research 36 1 1374122 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Seabird colony monitoring methods seabird ecology north-west Greenland North Water Polynya High Arctic envir geo |
spellingShingle |
Seabird colony monitoring methods seabird ecology north-west Greenland North Water Polynya High Arctic envir geo Anders Mosbech Peter Lyngs Kasper Lambert Johansen Estimating little auk (Alle alle) breeding density and chick-feeding rate using video surveillance |
topic_facet |
Seabird colony monitoring methods seabird ecology north-west Greenland North Water Polynya High Arctic envir geo |
description |
High Arctic ecosystems are under change and need to be monitored. We studied little auks (Alle alle), the most abundant seabird in the North Atlantic, in their main breeding area in the North Water Polynya region of High-Arctic north-west Greenland. We developed a method for estimating breeding density and chick-feeding rate based on video surveillance. As the nests of little auks are secluded between rocks and cannot be directly observed, the method rests on detailed recording of feeding events, when parent birds arrive from the sea with filled gular pouches and disappear into the scree to feed their chicks, supplemented with recording of fledging and pre-fledging behaviour of chicks outside the nesting holes. We installed video cameras in two study plots during the late chick-rearing and fledging periods 2 – 11 August 2012 and 5 – 12 August 2013, and the method proved useful for estimating the density of active nests immediately prior to fledging (which corresponds roughly to productivity of fledglings/m2). The densities of active nests for the two plots in 2012 and 2013 ranged between 1.06 and 1.63 nests/m2, and an average of 9.1 feeds/chick/day (n = 8 pairs, 3 × 24 h, 219 feedings) was recorded for this late stage of the chick-rearing period. Our video surveillance method has advantages over the mark–resight methods and other techniques used to monitor little auk colonies. |
format |
Article in Journal/Newspaper |
author |
Anders Mosbech Peter Lyngs Kasper Lambert Johansen |
author_facet |
Anders Mosbech Peter Lyngs Kasper Lambert Johansen |
author_sort |
Anders Mosbech |
title |
Estimating little auk (Alle alle) breeding density and chick-feeding rate using video surveillance |
title_short |
Estimating little auk (Alle alle) breeding density and chick-feeding rate using video surveillance |
title_full |
Estimating little auk (Alle alle) breeding density and chick-feeding rate using video surveillance |
title_fullStr |
Estimating little auk (Alle alle) breeding density and chick-feeding rate using video surveillance |
title_full_unstemmed |
Estimating little auk (Alle alle) breeding density and chick-feeding rate using video surveillance |
title_sort |
estimating little auk (alle alle) breeding density and chick-feeding rate using video surveillance |
publisher |
Norwegian Polar Institute |
publishDate |
2017 |
url |
https://doi.org/10.1080/17518369.2017.1374122 https://doaj.org/article/6e1f4e4eb615448e84fe063e847f044d |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Alle alle Arctic Greenland little auk North Atlantic Polar Research |
genre_facet |
Alle alle Arctic Greenland little auk North Atlantic Polar Research |
op_source |
Polar Research, Vol 36, Iss 1 (2017) |
op_relation |
1751-8369 doi:10.1080/17518369.2017.1374122 https://doaj.org/article/6e1f4e4eb615448e84fe063e847f044d |
op_rights |
undefined |
op_doi |
https://doi.org/10.1080/17518369.2017.1374122 |
container_title |
Polar Research |
container_volume |
36 |
container_issue |
1 |
container_start_page |
1374122 |
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1766273162512695296 |