Satellite tracking of red-listed nominate lesser black-backed gulls (Larus f. fuscus): Habitat specialisation in foraging movements raises novel conservation needs
In contrast to many other gull species, nominate lesser black-backed gulls (Larus fuscus fuscus, nLBBG) have shown generally decreasing population trends throughout their breeding area in northern and eastern Fennoscandia over the past decades and are now red-listed. Interspecific competition, preda...
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ftunivturku:oai:www.utupub.fi:10024/169552 2023-05-15T16:12:05+02:00 Satellite tracking of red-listed nominate lesser black-backed gulls (Larus f. fuscus): Habitat specialisation in foraging movements raises novel conservation needs Elena Arriero Kasper Thorup Risto Juvaste Maija-Liisa Penttinen Anna Gagliardo Juhani Hannila Inge Mueller Markku J. Huttunen Richard Holland Ralf Wistbacka Martin Wikelski biologian laitoksen yhteiset, Department of Biology 2606400 2022-10-28T14:08:01Z 230 220 https://www.utupub.fi/handle/10024/169552 en eng ELSEVIER SCIENCE BV Netherlands Alankomaat NL 10 10.1016/j.gecco.2017.03.009 Global Ecology and Conservation https://www.utupub.fi/handle/10024/169552 URN:NBN:fi-fe2021042718034 2351-9894 2022 ftunivturku 2022-11-03T00:02:15Z In contrast to many other gull species, nominate lesser black-backed gulls (Larus fuscus fuscus, nLBBG) have shown generally decreasing population trends throughout their breeding area in northern and eastern Fennoscandia over the past decades and are now red-listed. Interspecific competition, predation, increased disturbance, organochlorine poisoning and food shortages were suggested as main reasons for the overall decrease. Here we contribute to a better understanding of population declines by comparing foraging movements of satellite tracked adult gulls in three geographical areas of Finland (West, South, and East) that differ in their population trends. Our analysis examines potential differences and preferences in the feeding site behaviour of adult gulls. Our comparison of the three geographical areas showed that nLBBGs preferred feeding at fur farms in West Finland, waste dumps in South Finland, and lakes and fields in East Finland. We found individual gulls of this purportedly generalist species to be highly specialised in their foraging behaviour, particularly those that might be associated with their survival probabilities. We hypothesise that differences in foraging behaviour and food availability during the breeding season are partially responsible for differences in demographic trends between populations. Specifically, we identify potential local conservation problems such as shooting in birds visiting fur farms. Our data suggest that the effective conservation and management of endangered nLBBGs could be aided by simple actions in the breeding areas in addition to better protection throughout the annual movement cycle. (C) 2017 The Authors. Published by Elsevier B.V. Other/Unknown Material Fennoscandia Larus fuscus fuscus University of Turku: UTUPub |
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Open Polar |
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University of Turku: UTUPub |
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ftunivturku |
language |
English |
description |
In contrast to many other gull species, nominate lesser black-backed gulls (Larus fuscus fuscus, nLBBG) have shown generally decreasing population trends throughout their breeding area in northern and eastern Fennoscandia over the past decades and are now red-listed. Interspecific competition, predation, increased disturbance, organochlorine poisoning and food shortages were suggested as main reasons for the overall decrease. Here we contribute to a better understanding of population declines by comparing foraging movements of satellite tracked adult gulls in three geographical areas of Finland (West, South, and East) that differ in their population trends. Our analysis examines potential differences and preferences in the feeding site behaviour of adult gulls. Our comparison of the three geographical areas showed that nLBBGs preferred feeding at fur farms in West Finland, waste dumps in South Finland, and lakes and fields in East Finland. We found individual gulls of this purportedly generalist species to be highly specialised in their foraging behaviour, particularly those that might be associated with their survival probabilities. We hypothesise that differences in foraging behaviour and food availability during the breeding season are partially responsible for differences in demographic trends between populations. Specifically, we identify potential local conservation problems such as shooting in birds visiting fur farms. Our data suggest that the effective conservation and management of endangered nLBBGs could be aided by simple actions in the breeding areas in addition to better protection throughout the annual movement cycle. (C) 2017 The Authors. Published by Elsevier B.V. |
author2 |
biologian laitoksen yhteiset, Department of Biology 2606400 |
author |
Elena Arriero Kasper Thorup Risto Juvaste Maija-Liisa Penttinen Anna Gagliardo Juhani Hannila Inge Mueller Markku J. Huttunen Richard Holland Ralf Wistbacka Martin Wikelski |
spellingShingle |
Elena Arriero Kasper Thorup Risto Juvaste Maija-Liisa Penttinen Anna Gagliardo Juhani Hannila Inge Mueller Markku J. Huttunen Richard Holland Ralf Wistbacka Martin Wikelski Satellite tracking of red-listed nominate lesser black-backed gulls (Larus f. fuscus): Habitat specialisation in foraging movements raises novel conservation needs |
author_facet |
Elena Arriero Kasper Thorup Risto Juvaste Maija-Liisa Penttinen Anna Gagliardo Juhani Hannila Inge Mueller Markku J. Huttunen Richard Holland Ralf Wistbacka Martin Wikelski |
author_sort |
Elena Arriero |
title |
Satellite tracking of red-listed nominate lesser black-backed gulls (Larus f. fuscus): Habitat specialisation in foraging movements raises novel conservation needs |
title_short |
Satellite tracking of red-listed nominate lesser black-backed gulls (Larus f. fuscus): Habitat specialisation in foraging movements raises novel conservation needs |
title_full |
Satellite tracking of red-listed nominate lesser black-backed gulls (Larus f. fuscus): Habitat specialisation in foraging movements raises novel conservation needs |
title_fullStr |
Satellite tracking of red-listed nominate lesser black-backed gulls (Larus f. fuscus): Habitat specialisation in foraging movements raises novel conservation needs |
title_full_unstemmed |
Satellite tracking of red-listed nominate lesser black-backed gulls (Larus f. fuscus): Habitat specialisation in foraging movements raises novel conservation needs |
title_sort |
satellite tracking of red-listed nominate lesser black-backed gulls (larus f. fuscus): habitat specialisation in foraging movements raises novel conservation needs |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2022 |
url |
https://www.utupub.fi/handle/10024/169552 |
genre |
Fennoscandia Larus fuscus fuscus |
genre_facet |
Fennoscandia Larus fuscus fuscus |
op_relation |
10 10.1016/j.gecco.2017.03.009 Global Ecology and Conservation https://www.utupub.fi/handle/10024/169552 URN:NBN:fi-fe2021042718034 2351-9894 |
_version_ |
1765997326243987456 |