FN Archimer Export Format
PT J
TI Negative effects of wind speed on individual foraging performance and breeding success in little penguins
BT 
AF SARAUX, Claire
   CHIARADIA, Andre
   SALTON, Marcus
   DANN, Peter
   VIBLANC, Vincent A.
AS 1:1;2:2;3:2;4:2;5:3,4,5;
FF 1:PDG-RBE-MARBEC-LHM;2:;3:;4:;5:;
C1 Inst Francais Rech Exploitat Mer Ifremer, UMR MARBEC, Ave Jean Monnet,CS 30171, F-34203 Sete, France.
   Phillip Isl Nat Parks, Res Dept, POB 97, Cowes, Vic 3922, Australia.
   Univ Strasbourg, IPHC, DEPE, 23 Rue Becquerel, F-67087 Strasbourg, France.
   CNRS, UMR7178, F-67087 Strasbourg, France.
   Univ Montpellier 3, Univ Montpellier, CNRS, Ctr Ecol Fonctionnelle & Evolut,UMR 5175, 1919 Route Mende, F-34293 Montpellier, France.
C2 IFREMER, FRANCE
   PHILLIP ISL NAT PARKS, AUSTRALIA
   UNIV STRASBOURG, FRANCE
   CNRS, FRANCE
   UNIV MONTPELLIER, FRANCE
SI SETE
SE PDG-RBE-MARBEC-LHM
UM MARBEC
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
IF 8.759
TC 19
UR https://archimer.ifremer.fr/doc/00318/42964/42469.pdf
   https://archimer.ifremer.fr/doc/00318/42964/42470.docx
LA English
DT Article
DE ;body condition;chick rearing;climate change vs. climate variability;Eudyptula minor;extreme events;seabird
AB Most effects of environmental and climate variability on predator life history traits and population dynamics result from indirect effects mediated through the food chain. There is growing evidence that wind strength might affect seabirds while foraging at sea. Here, we investigated the effect of wind speed on the foraging performance of a flightless marine predator, the little penguin (Eudyptula minor). To this end, we used satellite-derived wind data collected over 11 breeding seasons during which the daily attendance and body mass changes of more than 200 penguins breeding at Phillip Island (Victoria, Australia) were recorded by an automated penguin monitoring system. Over 17 363 foraging trips, we found that wind speed had important effects on foraging and provisioning parameters in breeding adults. During incubation and chick-guard, stronger winds were associated with decreased foraging efficiency (lower body mass gain). During chick-guard, stronger winds were furthermore associated with lower meal sizes provided to the chicks, but parental body reserves appeared unaffected. Under extreme wind conditions (>14 m/s) during the post-guard phase, adults maintained their body reserves by shifting towards longer foraging trips, while providing chicks with smaller meals. Chick meal size and foraging trip duration during chick rearing had direct effects on breeding success, suggesting that the influence of wind on individual fitness was mediated by changes in foraging performances and success. Furthermore, using a long-term wind data series spanning 150-yr from a coastal wind station, we found a slight decline in wind speed and a decrease in wind speed variability in the Bass Strait where little penguins forage. Interestingly, based on this wind data, we found birds to be more directly affected by punctual events of strong winds (e.g. storms or gales), than by an overall change in wind patterns over time. Potential candidate mechanisms mediating the effects of wind speed on foraging efficiency may include swell formation, energy costs of travelling and thermoregulation, and a possible disruption of thermoclines, which may be important for little penguins. Plasticity in foraging strategies allowed parents to partially compensate for negative wind effects.
PY 2016
PD FEB
SO Ecological Monographs
SN 0012-9615
PU Wiley-blackwell
VL 86
IS 1
UT 000371767700005
BP 61
EP 77
DI 10.1890/14-2124.1
ID 42964
ER

EF