TY  - JOUR
AU  - Shaffer Scott A, Weimerskirch Henri
PY  - 2009//
TI  - Spatiotemporal habitat use by breeding sooty shearwaters Puffinus griseus
T2  - Mar. Ecol. Prog. Ser.
JO  - Marine Ecology Progress Series
SP  - 209
EP  - 220
VL  - 391
PB  - Inter-Research, Nordbuente 23 Oldendorf/Luhe 21385 Germany
KW  - activity
KW  - archival data logger
KW  - diving
KW  - geolocation
KW  - permitted without written consent
KW  - publisher
KW  - puffinus griseus
KW  - resale republication not
KW  - sea surface temperature
KW  - sooty shearwater
KW  - tracking
KW  -
N2  - Breeding sooty shearwaters Puffin us griseus cycle between long (11 to 14 d) and short (1 to 2 d) foraging bouts at sea, but no information exists on bird behavior during these trips. We tested the hypothesis that shearwaters use these long trips to travel to distant Antarctic waters compared to remaining in local waters. Patterns of habitat use of 28 breeding sooty shearwaters were studied using 6 g archival data loggers that recorded location, environmental temperature, and diving behavior. Dive activity was compared to remotely-sensed environmental data to characterize the habitats visited by shearwaters on long and short trips. Sooty shearwaters traveled predominantly (70% of all long trips) to cold oceanic waters along the Polar Front (mean SD, 1970 930 km from colony) on long trips or remained within warmer neritic waters of the New Zealand shelf (515 248 km from colony) on short trips. Diving depths (mean depth 15.9 10.8 m, max depth 69.9 m, n = 2007 dives) were not significantly different between excursion types. Activity patterns suggest that shearwaters commuted between distant foraging grounds (e.g. Polar Front) and the breeding colony and that more than 95% of diving activity occurred during daylight hours. Although shearwaters traveled primarily to Antarctic waters on long trips, occasional trips around New Zealand waters were observed; all but 2 birds were from the northern-most study colony. Oceanic habitats in Antarctic waters were substantially different from neritic habitats around New Zealand, indicating that shearwaters experience dramatically different environmental conditions associated with each excursion type. The ability of sooty shearwaters to use 2 vastly different habitats provides greater flexibility for maximizing resource acquisition during breeding and reduces competition near the colony.
SN  - 0171-8630
UR  - http://dx.doi.org/10.3354/meps07932
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=2239), last updated on Thu, 04 Jul 2024 07:21:09 +0200
ID  - ShafferScottA2009
ER  -