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Viviant Morgane, Monestiez Pascal, Guinet Christophe, . (2014). Can We Predict Foraging Success in a Marine Predator from Dive Patterns Only? Validation with Prey Capture Attempt Data
. PLoS ONE, 9(3), e88503–.
Abstract: Predicting how climatic variations will affect marine predator populations relies on our ability to assess foraging success, but evaluating foraging success in a marine predator at sea is particularly difficult. Dive metrics are commonly available for marine mammals, diving birds and some species of fish. Bottom duration or dive duration are usually used as proxies for foraging success. However, few studies have tried to validate these assumptions and identify the set of behavioral variables that best predict foraging success at a given time scale. The objective of this study was to assess if foraging success in Antarctic fur seals could be accurately predicted from dive parameters only, at different temporal scales. For this study, 11 individuals were equipped with either Hall sensors or accelerometers to record dive profiles and detect mouth-opening events, which were considered prey capture attempts. The number of prey capture attempts was best predicted by descent and ascent rates at the dive scale; bottom duration and descent rates at 30-min, 1-h, and 2-h scales; and ascent rates and maximum dive depths at the all-night scale. Model performances increased with temporal scales, but rank and sign of the factors varied according to the time scale considered, suggesting that behavioral adjustment in response to prey distribution could occur at certain scales only. The models predicted the foraging intensity of new individuals with good accuracy despite high inter-individual differences. Dive metrics that predict foraging success depend on the species and the scale considered, as verified by the literature and this study. The methodology used in our study is easy to implement, enables an assessment of model performance, and could be applied to any other marine predator.
Programme: 109
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Vitale Vito, Petkov Boyan, Goutail Florence, Lanconelli Christian, Lupi Angelo, Mazzola Mauro, Busetto Maurizio, Pazmino Andrea, Schioppo Riccardo, Genoni Laura, Tomasi Claudio, . (2011). Variations of UV Irradiance at Antarctic Station Concordia During the Springs of 2008 and 2009
. Antarctic Science, 23(04), 389–398.
Keywords: ozone depletion, radiation amplification factor, solar UV irradiance, UV index, UV models,
Programme: 209
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Vitale V., R. Udisti, R. Hillamo, A. Virkkula, M. Del Guasta, M. Busetto, O. Cerri, A. Morganti, R. Traversi. (2007). Climatic effects of aerosol particles and thin clouds over the East Antarctic Plateau (TAVERN international co-operative project)..
Abstract: XI Workshop Fisica e Chimica dell'Atmosfera Antartica, Roma, 10-12 Aprile 2007.
Programme: 1181
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Vitale V., C. Lanconelli, L. Agnoletto, M. Busetto, R.S. Stone, M. Nardino, T. Georgiadis, B. Petkov, A. Lupi, and M. Mazzola -. (2007). Implementation of a BSRN station at Dome C – Antarctica: first measurements of radiative fluxes and aerosol optical depth,.
Abstract: XI Workshop Fisica e Chimica dell'Atmosfera Antartica, Roma, 10-12 Aprile 2007, book of abstract
Programme: 1176
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Vitale V., C. Lanconelli, A. Lupi, M. Mazzola, B. Petkov, M. Nardino and T. Georgiadis,. (2007). Radiation measurements at the Italian stations in Antarctica,.
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Visser K, Trampert J, Kennett B L N, . (2008). Global anisotropic phase velocity maps for higher mode Love and Rayleigh waves
. Geophysical Journal International, 172(3), 1016–1032.
Keywords: Inverse theory, Surface waves and free oscillations, Seismic anisotropy, Seismic tomography,
Programme: 133
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. (2017). Pigment composition and photoprotection of Arctic sea ice algae during spring (Vol. 585).
Keywords: Arctic Ice algae Light memory Photoacclimation Pigments Snow melt
Programme: 1164
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Viot C.R., Jouventin P. & Bried J. (1993). Population genetics of southern seabirds. Marine ornithology, 21, 1–25.
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Violot S., Haser R., Sonan G. Georlette D, Feller G. & Aghajari N. (2003). Expression, purification, crystallization and preliminary X-ray crystallographic studies of a psychrophilic cellulase from Pseudoalteromonas haloplanktis. Acta Crystallogr. D Biol. Crystallogr., 59, 1256–1258.
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Violot S., Aghajari N., Czjzek M., Feller G., Sonan G.K., Gouet P., Gerday C., Haser R. & Receveur-Brechot V. (2005). Structure of a full length psychrophilic cellulase from Pseudoalteromonas haloplanktis revealed by X-ray diffraction and small angle X-ray scattering. J. Mol. Biol., 348, 1211–1224.
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