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Author |
Péron C, Delord K, Phillips RA, Charbonnier Y, Marteau C, Louzao M, Weimerskirch H, |
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Title |
Seasonal variation in oceanographic habitat and behaviour of white-chinned petrels Procellaria aequinoctialis from Kerguelen Island
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Journal Article |
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Year |
2010 |
Publication |
Mar Ecol Prog Ser |
Abbreviated Journal |
Mar. Ecol. Prog. Ser. |
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Volume |
416 |
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Pages |
267-284 |
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109 |
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0171-8630 |
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3063 |
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Author |
Newland C, Field IC, Cherel Y, Guinet C, Bradshaw CJA, McMahon CR, Hindell MA, |
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Title |
Diet of juvenile southern elephant seals reappraised by stable isotopes in whiskers
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Journal Article |
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Year |
2011 |
Publication |
Mar Ecol Prog Ser |
Abbreviated Journal |
0171-8630 |
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Volume |
424 |
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Pages |
247-258 |
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109 |
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0171-8630 |
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yes |
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3267 |
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Author |
Karnovsky N, Harding A, Walkusz W, Kwaśniewski S, Goszczko I, Wiktor J Jr, Routti H, Bailey A, McFadden L, Brown Z, Beaugrand G, Grémillet D, |
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Title |
Foraging distributions of little auks Alle alle across the Greenland Sea: implications of present and future Arctic climate change
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Journal Article |
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Year |
2010 |
Publication |
Mar Ecol Prog Ser |
Abbreviated Journal |
Mar. Ecol. Prog. Ser. |
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Volume |
415 |
Issue |
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Pages |
283 -293 |
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Keywords |
At-sea observations · Calanus copepod · Climate model · East Greenland Current · Seabird · Little auk · Sea temperature · West Spitsbergen Current |
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Abstract |
The Arctic is undergoing widespread warming. In order to understand the impact of climate change on Arctic marine food webs, we studied the at-sea distribution of foraging little auks in contrasting conditions of the Greenland Sea. While the eastern side of the Greenland Sea has experienced recent warming, the western side is still dominated by cold, Arctic water in the East Greenland Current. We hypothesized that foraging little auks would be found in greatest abundance in cold Arctic waters bearing more lipid-rich prey, allowing them to deliver more energy-rich food to their chicks. To test our hypotheses, we made ship-borne bird observations and zooplankton tows, as well as analyses of chick meals at 2 little auk colonies adjacent to 3 distinct water masses in the Greenland Sea. Associated with the coldest water in the East Greenland Current, we found the highest concentrations of large Calanus copepods (C. glacialis and C. hyperboreus), as well as the highest concentrations of foraging little auks, indicating a relationship that is likely to be disrupted by increasing water temperatures. To assess potential future impacts of ocean warming, we used a coupled atmosphere–ocean global climate model (AOGCM) to predict Greenland Sea sea-surface temperatures over the study area at the end of the 21st century. Our results suggest that 4 of 8 little auk breeding colonies in the North Atlantic may be negatively impacted as temperatures exceed the thermal preferenda of large Calanus, which is the preferred prey of little auks during the breeding season. |
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388 |
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0171-8630 |
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yes |
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Call Number |
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Serial |
2104 |
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Author |
Fort Jerome, Cherel Yves, Harding Ann M A, Welcker Jorg, Jakubas Dariusz, Steen Harald, Karnovsky Nina J, Gremillet David, |
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Title |
Geographic and seasonal variability in the isotopic niche of little auks
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Type |
Journal Article |
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Year |
2010 |
Publication |
Marine Ecology Progress Series |
Abbreviated Journal |
Mar. Ecol. Prog. Ser. |
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Volume |
414 |
Issue |
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Pages |
293 -302 |
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Keywords |
alcid, annual cycle, copepod, diet, north atlantic, pelagic ecosystem, seabird, |
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Abstract |
The non-breeding season of seabirds is extremely challenging to study because it is often spent offshore under harsh environmental conditions. We used stable isotope analysis to investigate little auk Alle alle feeding ecology throughout the annual cycle. The geographic distribution of little auks in the Arctic covers a wide range of oceanographic conditions. We sampled birds from 5 different colonies located in the most important breeding areas (Greenland and Spitsbergen) to examine how individuals breeding in contrasting marine environments differ in their trophic niche throughout the year. We found differences in summer delta N-15 values among the colonies, suggesting different target species despite low overall delta N-15 values in blood, which indicates a diet that is primarily composed of copepods. A rise in delta N-15 values between summer and autumn indicated that adults changed their trophic status to feed at a higher trophic level. During autumn, a large overlap in feather delta C-13 values between colonies suggests a common moulting area off Northeast Greenland. During winter, the isotopic signatures show that the trophic status of Greenland and Spitsbergen birds differed, with birds from Greenland feeding at low trophic levels (probably mostly on copepods), and birds from Spitsbergen maintaining a higher trophic level. These findings highlight contrasting seasonal and regional diet in little auk populations, and reveal possible population overlaps during the autumn moult. We found substantial trophic variability in little auks, which may indicate unsuspected capabilities to adapt to current, drastic environmental change in the North Atlantic.
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388 |
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0171-8630 |
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yes |
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Serial |
2405 |
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Author |
Bailleul F, Cotté C, Guinet C, |
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Title |
Mesoscale eddies as foraging area of a deep-diving predator, the southern elephant seal
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Type |
Journal Article |
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Year |
2010 |
Publication |
Mar Ecol Prog Ser |
Abbreviated Journal |
Mar. Ecol. Prog. Ser. |
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Volume |
408 |
Issue |
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Pages |
251-264 |
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Programme |
109 |
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0171-8630 |
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yes |
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Call Number |
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Serial |
3016 |
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Author |
Moe B, Stempniewicz L, Jakubas D, Angelier F, Chastel O, Dinessen F, Gabrielsen Gw, Hanssen F, Karnovsky NJ, Rønning B, Welcker J, Wojczulanis-Jakubas K, Bech C, |
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Title |
Climate change and phenological responses of two seabird species breeding in the high-Arctic
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Type |
Journal Article |
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Year |
2009 |
Publication |
Marine Ecology Progress Series |
Abbreviated Journal |
Mar. Ecol. Prog. Ser. |
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Volume |
393 |
Issue |
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Pages |
235 -246 |
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Keywords |
climate change, match mismatch, permitted without written consent, phenology, publisher, resale republication not, sea ice, seabirds, svalbard, temperature, timing breeding, |
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Abstract |
The timing of breeding is a life-history trait that can greatly affect fitness, because successful reproduction depends on the match between the food requirements for raising young and the seasonal peak in food availability. We an analysed phenology (hatch dates) in relation to climate change for 2 seabird species breeding in the high-Arctic, little auks Alle alle and black-legged kittiwakes Rissa tridactyla, for the periods 1963-2008 and 1970-2008, respectively. We show that spring climate has changed during the study period, with a strong increase in both air temperature (TEMP) and sea surface temperature (SST) and a decrease in sea ice concentration. Little auks showed a trend for earlier breeding over the study period, while kittimakes showed a non-significant trend for later breeding, demonstrating different phenological responses in these 2 species. Little auks and kittiwakes adjusted their timing of breeding to different environmental signals. Spring TEMP was the best predictor of little auk phenology, with a significant negative effect. Spring SST was the strongest predictor of kittiwake phenology, with a non-significant negative effect. Spring sea ice concentration and the North Atlantic Oscillation (NAO) winter index had a low relative variable importance. Furthermore, in kittiwakes, years with late breeding were associated with low clutch size and mean annual breeding success, indicating poor investment and food availability. This study identifies some spring environmental factors important for regulating the timing of breeding in the high-Arctic, most likely through effects on snow cover limiting access to nest sites and the development of the polar marine food web. It remains to be investigated whether environmental factors are reliable predictors of marine prey phenology, and whether the decision to start breeding is constrained by food availability.
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330 |
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Publisher |
INTER-RESEARCH |
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ISSN |
0171-8630 |
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Approved |
yes |
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Call Number |
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Serial |
1770 |
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Author |
Grémillet D, Boulinier T, |
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Title |
Spatial ecology and conservation of seabirds facing global climate change: a review
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Type |
Journal Article |
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Year |
2009 |
Publication |
Marine Ecology Progress Series |
Abbreviated Journal |
Mar. Ecol. Prog. Ser. |
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Volume |
391 |
Issue |
2 |
Pages |
121 -137 |
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Abstract |
In this review we detail the impact of climate change on marine productivity, on marine environmental stochasticity and cyclicity, and on the spatio-temporal match-mismatch of seabirds and their prey. We thereby show that global warming has a profound bottom-up impact upon marine top-predators, but that such effects have to be studied in conjunction with the (top-down) impact of human fisheries upon seabird food resources. Further, we propose seabird ecological features, such as memory effects and social constraints, that make them particularly sensitive to rapid environmental change. We provide examples of how seabirds may nonetheless adapt when facing the consequences of climate change. We conclude that our understanding of the spatial ecology of seabirds facing environmental change is still rudimentary, despite its relevance for the conservation of these vulnerable organisms and for the management of marine ecosystems. We define the following research priorities. (1) Determine the factors affecting seabird distribution and movements at sea using biotelemetry, as well as colony dynamics on land. (2) Link seabird distribution patterns to those of their prey, (3) Determine further the role of historical and metapopulation processes in contributing to the dynamics of the spatial distribution of seabirds. (4) Assess phenotypic plasticity and the potential for microevolution within seabird spatial responses to climate change, since both will greatly affect the quality of modelling studies. (5) Adapt existing models to define and predict the impact of climate change onto seabird spatial dynamics. (6) Synthesize all gathered information to define marine protected areas and further conservation schemes, such as capacity reduction of fisheries. This research effort will require maintaining existing long-term monitoring programmes for seabirds, as well as developing new approaches to permit the integration of processes occurring at various scales, in order to be able to fully track the population responses of these long-lived vertebrates to environmental changes.
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388 |
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Inter-Research, Nordbuente 23 Oldendorf/Luhe 21385 Germany |
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0171-8630 |
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yes |
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Serial |
2103 |
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Author |
Shaffer Scott A, Weimerskirch Henri, Scott Darren, Pinaud David, Thompson David R, Sagar Paul M, Moller Henrik, Taylor Graeme A, Foley David G, Tremblay Yann, Costa Daniel P, |
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Title |
Spatiotemporal habitat use by breeding sooty shearwaters Puffinus griseus
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Type |
Journal Article |
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Year |
2009 |
Publication |
Marine Ecology Progress Series |
Abbreviated Journal |
Mar. Ecol. Prog. Ser. |
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Volume |
391 |
Issue |
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Pages |
209 -220 |
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Keywords |
activity, archival data logger, diving, geolocation, permitted without written consent, publisher, puffinus griseus, resale republication not, sea surface temperature, sooty shearwater, tracking, |
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Abstract |
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.
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109 |
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Inter-Research, Nordbuente 23 Oldendorf/Luhe 21385 Germany |
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0171-8630 |
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yes |
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2239 |
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Author |
Thiebot JB, Delord K, Marteau C, Weimerskirch H, |
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Title |
Stage-dependent distribution of the Critically Endangered Amsterdam albatross in relation to Economic Exclusive Zones
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Journal Article |
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Year |
2014 |
Publication |
Endang Species Res |
Abbreviated Journal |
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Volume |
23 |
Issue |
3 |
Pages |
263-276 |
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109 |
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ISSN |
1613-4796 |
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yes |
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5114 |
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Author |
Delord K, Cotté C, Péron C, Marteau C, Pruvost P, Gasco N, Duhamel G, Cherel Y, Weimerskirch H, |
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Title |
At-sea distribution and diet of an endangered top predator: relationship between white-chinned petrels and commercial longline fisheries
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Journal Article |
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Year |
2010 |
Publication |
Endang Species Res |
Abbreviated Journal |
1613-4796 |
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Volume |
13 |
Issue |
1 |
Pages |
1-16 |
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109 |
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1613-4796 |
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yes |
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Call Number |
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Serial |
3060 |
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