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Overlap between flesh-footed shearwater Puffinus carneipes foraging areas and commercial fisheries in New Zealand waters
journal contribution
posted on 2016-01-01, 00:00 authored by S M Waugh, S C Patrick, D P Filippi, G A Taylor, John ArnouldJohn ArnouldAlthough the flesh-footed shearwater Puffinus carneipes is a species with large population sizes (tens of thousands of breeding pairs) and widespread sub-tropical distribution across Australasian water masses, it is among the species most threatened by longline fisheries mortality in this region. While bycatch mitigation measures have been very successful in reducing mortality in some species, bycatch of flesh-footed shearwaters is still high, with captures estimated to exceed the sustainable take of 514 birds yr-1 by nearly 200 birds for New Zealand fisheries alone. Management agencies aiming to reduce the impact of fisheries mortality on the populations need to understand which marine areas are being used by flesh-footed shearwaters to better target fishery monitoring and mitigation efforts. Foraging studies of seabirds tell us about their use of resources, i.e. the way species segregate the available habitat and help to identify threats that may affect population viability. Breeding shearwaters were tracked from 2 New Zealand colonies using GPS loggers. Individuals foraged over shelf and deep oceanic waters up to 1200 km from their nesting sites during incubation but were mainly within 370 km during early chick rearing. The intensity of potential interactions increased for trawl and surface longline fishing between the January and February study periods but remained at a similar level for bottom longline fishing. Following the field data collection, changes to fishery monitoring were implemented in the areas where shearwaters foraged.
History
Journal
Marine ecology progress seriesVolume
551Pagination
249 - 260Publisher
Inter-ResearchLocation
Oldendorf, GermanyPublisher DOI
ISSN
0171-8630eISSN
1616-1599Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2016, Inter-ResearchUsage metrics
Categories
Keywords
fisheries interactionsoceanicforagingbycatchseabirdScience & TechnologyLife Sciences & BiomedicinePhysical SciencesEcologyMarine & Freshwater BiologyOceanographyEnvironmental Sciences & EcologySEABIRD MORTALITYWANDERING ALBATROSSLONGLINE FISHERIESFACTORY TRAWLERSPOPULATION-MODELDIOMEDEAIMPACTCLIMATEFOODZoologyOceanographyEcology
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