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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

dc.contributor.authorElena Arriero
dc.contributor.authorKasper Thorup
dc.contributor.authorRisto Juvaste
dc.contributor.authorMaija-Liisa Penttinen
dc.contributor.authorAnna Gagliardo
dc.contributor.authorJuhani Hannila
dc.contributor.authorInge Mueller
dc.contributor.authorMarkku J. Huttunen
dc.contributor.authorRichard Holland
dc.contributor.authorRalf Wistbacka
dc.contributor.authorMartin Wikelski
dc.date.accessioned2022-10-28T14:08:01Z
dc.date.available2022-10-28T14:08:01Z
dc.identifier.urihttps://www.utupub.fi/handle/10024/169552
dc.description.abstractIn 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.
dc.language.isoen
dc.publisherELSEVIER SCIENCE BV
dc.titleSatellite tracking of red-listed nominate lesser black-backed gulls (Larus f. fuscus): Habitat specialisation in foraging movements raises novel conservation needs
dc.identifier.urnURN:NBN:fi-fe2021042718034
dc.relation.volume10
dc.contributor.organizationfi=biologian laitoksen yhteiset|en=Department of Biology|
dc.contributor.organization-code2606400
dc.converis.publication-id28600328
dc.converis.urlhttps://research.utu.fi/converis/portal/Publication/28600328
dc.format.pagerange230
dc.format.pagerange220
dc.identifier.jour-issn2351-9894
dc.okm.affiliatedauthorJuvaste, Risto
dc.okm.discipline1172 Ympäristötiedefi_FI
dc.okm.discipline1181 Ecology, evolutionary biologyen_GB
dc.okm.discipline1172 Environmental sciencesen_GB
dc.okm.discipline1181 Ekologia, evoluutiobiologiafi_FI
dc.okm.internationalcopublicationinternational co-publication
dc.okm.internationalityInternational publication
dc.okm.typeJournal article
dc.publisher.countryNetherlandsen_GB
dc.publisher.countryAlankomaatfi_FI
dc.publisher.country-codeNL
dc.relation.doi10.1016/j.gecco.2017.03.009
dc.relation.ispartofjournalGlobal Ecology and Conservation
dc.year.issued2017


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