Show simple record

dc.contributor.authorGalbraith, Mel
dc.contributor.authorKrzyżosiak, Jacek
dc.contributor.authorAguilar, Glenn
dc.contributor.authorJones, Graham
dc.contributor.authorOliver, Rob
dc.date.accessioned2016-06-28T22:27:07Z
dc.date.available2016-06-28T22:27:07Z
dc.date.issued2015
dc.identifier.issn0029-4470
dc.identifier.urihttps://hdl.handle.net/10652/3450
dc.description.abstractThe southern black-backed gull (Larus dominicanus) is a common species throughout New Zealand, and has a significant presence in Auckland City. Large colonies are present on Rangitoto Island only 8 km from the city’s centre. The proximity of these colonies to the anthropogenic resources of the city may have influenced breeding locations and local populations. Using field data from the 2012/13 breeding period, we compare the current status of the breeding population on Rangitoto Island with historical data collated from literature. The Rangitoto population exhibited rapid growth throughout the early 20th century, a pattern attributed to environmental changes associated with European settlement and development. Since the 1980s, the colony sizes have declined, a change that is consistent with other gull populations both nationally and globally. The driver of the population changes is likely to be the availability of food and the expansion of vegetation into the colonies. Human disturbance and predation are discounted as impacting on population change.en_NZ
dc.language.isoenen_NZ
dc.publisherOrnithological Society of New Zealand Inc.en_NZ
dc.rights© The Ornithological Society of New Zealand, Incen_NZ
dc.subjectLarus dominicanus (Black-backed gull)en_NZ
dc.subjectsouthern black-backed gullen_NZ
dc.subjectkelp gullen_NZ
dc.subjectRangitoto Island (Hauraki Gulf, N.Z.)en_NZ
dc.subjectpopulation changesen_NZ
dc.titleChanges in the breeding status of the southern black-backed gull (Larus dominicanus) colonies on Rangitoto Island, Hauraki Gulf, New Zealanden_NZ
dc.typeJournal Articleen_NZ
dc.rights.holderOrnithological Society of New Zealand Inc.en_NZ
dc.subject.marsden050211 Wildlife and Habitat Managementen_NZ
dc.identifier.bibliographicCitationGalbraith, M., Krzyżosiak, J., Aguilar, G., Jones, G., & Oliver, R. (2015). Changes in the breeding status of the southern black-backed gull (Larus dominicanus) colonies on Rangitoto Island, Hauraki Gulf, New Zealand. Notornis, 62, pp.192-201.en_NZ
unitec.institutionUnitec Institute of Technologyen_NZ
unitec.institutionOnehunga High School (Auckland, N.Z.)en_NZ
unitec.publication.spage192en_NZ
unitec.publication.lpage201en_NZ
unitec.publication.volume62en_NZ
unitec.publication.titleNotornisen_NZ
unitec.peerreviewedyesen_NZ
dc.contributor.affiliationUnitec Institute of Technologyen_NZ
dc.contributor.affiliationOnehunga High School (Auckland, N.Z.)en_NZ
unitec.identifier.roms58842en_NZ
unitec.identifier.roms58731
unitec.identifier.roms59277
unitec.institution.studyareaNatural Sciences


Files in this item

Thumbnail

This item appears in

Show simple record