Year-round distribution, activity patterns and habitat use of a poorly studied pelagic seabird, the fluttering shearwater Puffinus gavia.

Autor: Berg M; Centre for Animal Movement Research, Department of Biology, Lund University, Lund, Sweden., Linnebjerg JF; Centre for Animal Movement Research, Department of Biology, Lund University, Lund, Sweden.; Department of Bioscience, Aarhus University, Roskilde, Denmark., Taylor G; New Zealand Department of Conservation, Wellington, New Zealand., Ismar-Rebitz SMH; Experimental Ecology - Benthos Ecology, GEOMAR Helmholtz Center for Ocean Research Kiel, Kiel, Germany.; School of Biological Sciences, University of Auckland, Auckland, New Zealand., Bell M; Wildlife Management International Limited, Wellington, New Zealand., Gaskin CP; Northern New Zealand Seabird Trust, Warkworth, New Zealand., Åkesson S; Centre for Animal Movement Research, Department of Biology, Lund University, Lund, Sweden., Rayner MJ; School of Biological Sciences, University of Auckland, Auckland, New Zealand.; Auckland Museum, Auckland, New Zealand.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2019 Aug 06; Vol. 14 (8), pp. e0219986. Date of Electronic Publication: 2019 Aug 06 (Print Publication: 2019).
DOI: 10.1371/journal.pone.0219986
Abstrakt: We present the first study to examine the year-round distribution, activity patterns, and habitat use of one of New Zealand's most common seabirds, the fluttering shearwater (Puffinus gavia). Seven adults from Burgess Island, in the Hauraki Gulf, and one individual from Long Island, in the Marlborough Sounds, were successfully tracked with combined light-saltwater immersion loggers for one to three years. Our tracking data confirms that fluttering shearwaters employ different overwintering dispersal strategies, where three out of eight individuals, for at least one of the three years when they were being tracked, crossed the Tasman Sea to forage over coastal waters along eastern Tasmania and southeastern Australia. Resident birds stayed confined to waters of northern and central New Zealand year-round. Although birds frequently foraged over pelagic shelf waters, the majority of tracking locations were found over shallow waters close to the coast. All birds foraged predominantly in daylight and frequently visited the colony at night throughout the year. We found no significant inter-seasonal differences in the activity patterns, or between migratory and resident individuals. Although further studies of inter-colony variation in different age groups will be necessary, this study presents novel insights into year-round distribution, activity patterns and habitat use of the fluttering shearwater, which provide valuable baseline information for conservation as well as for further ecological studies.
Competing Interests: Mr Mike Bell is employed by Wildlife Management International Limited. However, this organisation has nothing to do with this study since Mr Bell was collecting this data on this spare time. This does not alter our adherence to PLOS ONE policies on sharing data and materials.
Databáze: MEDLINE
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