Christophe Guinet

Conditional multivariate functional PCA for the reconstruction of temperature and salinity profiles partially sampled by deep-diving marine mammals

Nadège Fonvieille, Christophe Guinet, Baptiste Picard, David Nérini

We present a statistical method to reconstruct the vertical thermohaline conditions in the Indian Sector of the Southern Ocean, where temperature and salinity profiles are partially sampled by female southern elephant seals. Datasets collected by biologgers provide unprecedented spatial and temporal coverage …

Conditional multivariate functional PCA for the reconstruction of temperature and salinity profiles partially sampled by deep-diving marine mammals

Nadège Fonvieille, Christophe Guinet, Baptiste Picard, David Nérini

We present a statistical method to reconstruct the vertical thermohaline conditions in the Indian Sector of the Southern Ocean, where temperature and salinity profiles are partially sampled by female southern elephant seals. Datasets collected by biologgers provide unprecedented spatial and temporal coverage …

fr (code pays fourni par la source)

Bioluminescent environment of the Southern Ocean revealed by deep-diving southern elephant seals

Yakov Uzan, Pauline Goulet, David Pinaud, Julieta Campagna et autres

As a consequence of climate change, marine communities and ecosystems are shifting at all scales, but characterizing these shifts and their extent remains challenging. Notably lacking is information on mid-trophic level components such as zooplankton and micronekton. As ca. 70% of water …

Predicting interactions of sperm and killer whales with industrial fisheries in the Southern Ocean: a spatiotemporal modelling approach for conflict mitigation

Margaux Mollier, Christophe Guinet, Clara Péron, Félix Massiot‐Granier et autres

fr, re, au (code pays fourni par la source)

Producing a New In Situ Wind Speed Product for the Southern Ocean Based on Acoustic Meteorology from Biologged Southern Elephant Seals

Anatole Gros-Martial, Gabriel Dubus, Dorian Cazau, Sara Bazin et autres

Abstract Obtaining in situ wind speed measurements over the ocean is paramount to (i) better calibrate numerical models and satellite imagery and (ii) increase our understanding of upper ocean processes such as mixed layer depth (MLD) dynamics and air–sea gas exchanges. For …

fr (code pays fourni par la source)

Elephant seals as sentinels of the ongoing changes affecting the Southern Ocean: Disentangling environmental and maternal effects on pup size and body condition

Nicolas Séon, Clive R. McMahon, Robert Harcourt, Mark A. Hindell et autres

The weaning mass of southern elephant seal pups ( Mirounga leonina ) is a key predictor of their first-year survival probability. However, variations in pup morphometric characteristics (length, mass and body condition i.e. the residual of the allometric relationship between log(mass) and …

Afrique du Sud, fr, au (code pays fourni par la source)

Benchmarking Models for Ocean Wind Speed Estimation Based on Passive Acoustic Monitoring

Anatole Gros-Martial, Louise Delaigue, Pierre Cauchy, Sara Pensieri et autres

Passive acoustic monitoring is a promising tool for long-term ocean observations, offering a unique means to capture physical and biological processes. This study explores its potential as a source of fine temporal scale in-situ wind speed product by assembling a unique corpus …

fr, ca, it, us (code pays fourni par la source)

Tracking data reveal both indirect and direct interactions between killer whales and fisheries in subantarctic waters

Anaïs Laurioux, Ryan R Reisinger, Jared R. Towers, Erwan Auguin et autres

fr (code pays fourni par la source)

High-resolution biologging of an Atlantic bluefin tuna captured and eaten by a supposed orca

Jessica L. Rudd, Ghalia Abel, Francisco Baringo, Samantha Birch et autres

Abstract Biologging has been used on a range of wild animals to document spectacular feats of migration and behaviour. We describe the pursuit, capture, and ingestion of an adult Atlantic bluefin tuna (Thunnus thynnus) (175 cm, estimated weight: 81 kg), which was …

gb, es, us, fr (code pays fourni par la source)

Hunting tactics of southern elephant seals Mirounga leonina and anti-predatory behaviours of their prey

Mathilde Chevallay, Christophe Guinet, Pauline Goulet, Tiphaine Jeanniard du Dot

For air-breathing marine predators that must save energy during dives, the ability to adopt hunting tactics that minimise the risk of triggering an escape reaction from the prey is crucial for efficient foraging. Female southern elephant seals (SES) Mirounga leonina forage on …

fr, gb, Afrique du Sud (code pays fourni par la source)

Toothed whale and shark depredation and bycatch in the longline fishery of French Polynesia

Juliette Aminian-Biquet, Paul Tixier, Gaétan Richard, Marie Soehnlen et autres

Marine megafauna feeding on fishery catches (depredation) or being incidentally caught on fishing gear (bycatch) have become important issues. Their socioeconomic and conservation stakes have been increasingly studied across the world fisheries. They remain understudied in the Pacific Ocean, where longline tuna …

fr, pf (code pays fourni par la source)

Spies of the deep: An animal-borne active sonar and bioluminescence tag to characterise mesopelagic prey size and behaviour in distinct oceanographic domains

Mathilde Chevallay, Tiphaine Jeanniard du Dot, Pauline Goulet, Nadège Fonvieille et autres

fr (code pays fourni par la source)