@article {9061, title = {Feeding ecology of two deep-sea skates bycaught on demersal longlines off Kerguelen Islands, Southern Indian Ocean}, journal = {Deep Sea Research Part I: Oceanographic Research Papers}, volume = {194}, year = {2023}, month = {Jan-04-2023}, pages = {103980}, issn = {09670637}, doi = {10.1016/j.dsr.2023.103980}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0967063723000195}, author = {Faure, Johanna and Nicolas Gasco and C{\'e}line Bonillo and Munaron, Jean-Marie and Cherel, Yves and Clara P{\'e}ron} } @article {9275, title = {Global assessment of marine plastic exposure risk for oceanic birds}, journal = {Nature Communications}, volume = {14}, year = {2023}, month = {07/2023}, abstract = {Plastic pollution is distributed patchily around the world{\textquoteright}s oceans. Likewise, marine organisms that are vulnerable to plastic ingestion or entanglement have uneven distributions. Understanding where wildlife encounters plastic is crucial for targeting research and mitigation. Oceanic seabirds, particularly petrels, frequently ingest plastic, are highly threatened, and cover vast distances during foraging and migration. However, the spatial overlap between petrels and plastics is poorly understood. Here we combine marine plastic density estimates with individual movement data for 7137 birds of 77 petrel species to estimate relative exposure risk. We identify high exposure risk areas in the Mediterranean and Black seas, and the northeast Pacific, northwest Pacific, South Atlantic and southwest Indian oceans. Plastic exposure risk varies greatly among species and populations, and between breeding and non-breeding seasons. Exposure risk is disproportionately high for Threatened species. Outside the Mediterranean and Black seas, exposure risk is highest in the high seas and Exclusive Economic Zones (EEZs) of the USA, Japan, and the UK. Birds generally had higher plastic exposure risk outside the EEZ of the country where they breed. We identify conservation and research priorities, and highlight that international collaboration is key to addressing the impacts of marine plastic on wide-ranging species.}, doi = {10.1038/s41467-023-38900-z}, url = {https://www.nature.com/articles/s41467-023-38900-z}, author = {Clark, Bethany L. and Carneiro, Ana P.B. and Pearmain, Elisabeth J. and Rouyer, Marie-Morgane and ... and Clara P{\'e}ron and al.} } @article {8356, title = {Macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the Kerguelen Islands}, journal = {Journal of Marine Systems}, volume = {226}, year = {2022}, month = {Jan-02-2022}, pages = {103650}, issn = {09247963}, doi = {10.1016/j.jmarsys.2021.103650}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0924796321001457}, author = {Cott{\'e}, C. and Ariza, A. and Berne, A. and Habasque, J. and Lebourges-Dhaussy, A. and Roudaut, G. and Espinasse, B. and Hunt, B.P.V. and Pakhomov, E.A. and Henschke, N. and Clara P{\'e}ron and Conchon, A. and Koedooder, C. and Izard, L. and Cherel, Y.} } @article {8959, title = {Methods to detect spatial biases in tracking studies caused by differential representativeness of individuals, populations and time}, journal = {Diversity and Distributions}, year = {2022}, month = {Mar-10-2024}, issn = {1366-9516}, doi = {10.1111/ddi.13642}, url = {https://onlinelibrary.wiley.com/doi/10.1111/ddi.13642}, author = {Morera-Pujol, Virginia and Catry, Paulo and Magalh{\~a}es, Maria and Clara P{\'e}ron and Reyes-Gonz{\'a}lez, Jos{\'e} Manuel and Granadeiro, Jos{\'e} Pedro and Milit{\~a}o, Teresa and Dias, Maria P. and Oro, Daniel and Dell{\textquoteright}Omo, Giacomo and M{\"u}ller, Martina and Paiva, Vitor H. and Metzger, Benjamin and Neves, Ver{\'o}nica and Navarro, Joan and Karris, Georgios and Xirouchakis, Stavros and Cecere, Jacopo G. and Zamora-L{\'o}pez, Antonio and Forero, Manuela G. and Ouni, Ridha and Romdhane, Mohamed Salah and De Felipe, Fernanda and Zajkov{\'a}, Zuzana and Cruz-Flores, Marta and Gr{\'e}millet, David and Gonz{\'a}lez-Sol{\'\i}s, Jacob and Ramos, Ra{\"u}l} } @article {8598, title = {Seascapes of fear and competition shape regional seabird movement ecology}, journal = {Communications Biology}, volume = {5}, year = {2022}, month = {Jan-12-2022}, doi = {10.1038/s42003-022-03151-z}, url = {https://www.nature.com/articles/s42003-022-03151-z}, author = {Courbin, Nicolas and Pichegru, Lorien and Seakamela, Mduduzi and Makhado, Azwianewi and Me{\"y}er, Michael and Kotze, Pieter G. H. and Mc Cue, Steven A. and Clara P{\'e}ron and Gr{\'e}millet, David} } @article {8440, title = {Similar trait structure and vulnerability in pelagic fish faunas on two remote island systems}, journal = {Marine Biology}, volume = {169}, year = {2022}, month = {Jan-01-2022}, abstract = {The link between biodiversity and ecosystem functioning has been the topic of considerable research, but it remains unclear how biodiversity decline is compromising ecosystem functionality, particularly in the pelagic realm. Here, we explore how pelagic fish species diversity relates to functional diversity by sampling two locations, which, on the basis of biogeography, environmental conditions and human pressures, were expected to host pronounced differences in species composition and abundances and therefore functionality. Strings of five drifting mid-water Baited Remote Underwater Video Systems were used to survey pelagic vertebrate diversity and abundance in two isolated oceanic island systems, the Malpelo Fauna and Flora Sanctuary{\textemdash}a large, 25-year-old marine protected area{\textemdash}and an unprotected area in Cape Verde. Functional diversity, which offers insight into a community{\textquoteright}s resilience against disturbance, was analysed using six key functional traits of marine fishes. Abundance was recorded as MaxN, the maximum number of individuals of a given species in a single frame during the 2-h deployment time. Cape Verde showed high overall abundance (Total MaxN\ 873) and low biomass (3559\ kg), with a predominance of smaller fishes. Malpelo showed high biomass (7839\ kg) but lower abundance (Total MaxN\ 465), with a predominance of large species. Species and functional diversity were marginally different between locations. Multivariate analysis of species relative abundances showed significant divergence between locations, although community functional traits overlapped strongly, suggesting that both communities share a similar structure and vulnerability. The existence of a common functional {\textquoteleft}backbone{\textquoteright} in diverging species communities across the oceans, under different productivity regimes, and under different protection levels, suggests that although pelagic communities may differ considerably in terms of species composition, this does not translate into a differing functional structure and resilience potential. Whether this vulnerability is a common feature of pelagic communities and how this contrasts with benthic systems warrants further research.}, issn = {0025-3162}, doi = {10.1007/s00227-021-03998-6}, url = {https://link.springer.com/10.1007/s00227-021-03998-6}, author = {Steinberg, Madeline and Juhel, Jean-Baptiste and Marques, Virginie and Clara P{\'e}ron and Hocd{\'e}, R{\'e}gis and Polanco Fern{\'a}ndez, Andr{\'e}a and Pellissier, Lo{\"\i}c and Villeger, Sebastien and Mouillot, David and Letessier, Tom B.} } @article {8699, title = {Spatially explicit food web modelling to consider fisheries impacts and ecosystem representation within Marine Protected Areas on the Kerguelen PlateauAbstract}, journal = {ICES Journal of Marine Science}, volume = {79}, year = {2022}, month = {Nov-04-2023}, pages = {1327 - 1339}, issn = {1054-3139}, doi = {10.1093/icesjms/fsac056}, url = {https://academic.oup.com/icesjms/article/79/4/1327/6572845}, author = {Subramaniam, Roshni C and Corney, Stuart P and Melbourne-Thomas, Jessica and Clara P{\'e}ron and Ziegler, Philippe and Swadling, Kerrie M} } @article {8049, title = {Contribution of toothfish depredated on fishing lines to the energy intake of killer whales off the Crozet Islands: a multi-scale bioenergetic approach}, journal = {Marine Ecology Progress Series}, volume = {668}, year = {2021}, month = {Dec-06-2022}, pages = {149 - 161}, abstract = {Fisheries modify prey availability for marine predators by extracting resources but also by providing them with new feeding opportunities. Among these, depredation, which occurs when predators feed on fish caught on fishing gear, is a behavior developed by many species as a way to acquire food through limited foraging effort. However, the extent to which depredated resources from fisheries contribute to the energetic requirements and affect the demography of depredating individuals is unknown. We investigated the contribution of Patagonian toothfish Dissostichus eleginoides depredated on longlines to the energetic requirements of killer whales Orcinus orca around the Crozet Islands (southern Indian Ocean) over the period 2007-2018. Our results indicate that during days when depredation occurred, depredating individuals fulfilled on average 94.1\% of their daily energetic requirements with depredated toothfish. However, the contribution varied from 1.2 to 13.3\% of the monthly energetic requirements and from 2.4 to 8.8\% of the yearly energetic requirements of the total population. Together, these findings suggest that intake of depredated toothfish can be substantial at a fine scale (daily and individually), potentially leading to temporary provisioning effects and changes in predation pressures. These effects become minor (\<10\%), however, when considering the full population over a whole year. The contribution of depredated fish to the annual energetic requirements of the population has increased in recent years, likely due to larger fishing quotas and greater opportunities for whales to depredate, which stresses the importance of accounting for depredation in ecosystem-based management of fishing activity.}, issn = {0171-8630}, doi = {10.3354/meps13725}, url = {https://www.int-res.com/abstracts/meps/v668/p149-161/}, author = {Faure, Johanna and Clara P{\'e}ron and Nicolas Gasco and Massiot-Granier, F{\'e}lix and Spitz, J and Guinet, C and Tixier, P} } @article {8357, title = {Development of robust assessment methods and harvest strategies for spatially complex, multi-jurisdictional toothfish fisheries in the Southern Ocean}, year = {2021}, month = {2021}, pages = {266 pp}, institution = {Fisheries Research and Development Corporation Project n{\textdegree}2013/013}, type = {Final report}, url = {http://ecite.utas.edu.au/143108}, author = {Philippe Ziegler and Burch, Paul and Clara P{\'e}ron and Welsford, Dirk and Bryn, Farmer and Yates, Peter and Potts, J. and Woodcock, Emma and Barnes, T. and Guy Duhamel and Gardner, C.} } @article {6654, title = {Assessing the impact of toothed whale depredation on socio-ecosystems and fishery management in wide-ranging subantarctic fisheries}, journal = {Reviews in Fish Biology and Fisheries}, volume = {30}, year = {2020}, pages = {203-217}, abstract = {Marine predators feeding on fisheries catches directly on the fishing gear, a behaviour termed {\textquotedblleft}depredation{\textquotedblright}, has emerged as a major human-wildlife conflict globally, often resulting in substantial socio-economic and ecological impacts. This study investigated the extent of this conflict in commercial Patagonian toothfish (Dissostichus eleginoides) fisheries across subantarctic waters where both killer whales (Orcinus orca) and sperm whales (Physeter macrocephalus) feed on toothfish caught on longline hooks. Using long-term datasets from six major fishing areas, from southern Chile to the Indian Ocean sector of the Southern Ocean, statistical models were developed to quantify the catch removals due to whale depredation interactions. The results indicated that these removals were large, totalling more than 6600 t of toothfish between 2009 and 2016 with an annual mean of 837 t [95\% CI 480{\textendash}1195 t], comprised of 317 t [232{\textendash}403 t] and 518 t [247{\textendash}790 t] removed by killer whales and sperm whales, respectively. Catch removals greatly varied between areas, with the largest estimates found at Crozet, where on average 279 t [179{\textendash}379 t] of toothfish per year, equivalent to 30\% [21{\textendash}37\%] of the total catches. Together, these findings provide metrics to assess the impacts of depredation interactions on the fishing industry, whale populations, fish stocks and associated ecosystems. With an estimated $15\ M USD worth of fish depredated every year, this study highlights the large geographic scale and economic significance of the depredation issue and its potential to compromise the viability of some toothfish fisheries which are the primary socio-economic activity in subantarctic regions.}, doi = {10.1007/s11160-020-09597-w}, url = {https://link.springer.com/article/10.1007/s11160-020-09597-w}, author = {Tixier, Paul and Burch, Paul and Massiot-Granier, F{\'e}lix and Ziegler, Philippe and Welsford, Dirk and Lea, Mary-Anne and Hindell, Mark A and Guinet, Christophe and Wotherspoon, Simon and Nicolas Gasco and Clara P{\'e}ron and Guy Duhamel and Arangio, Rhys and Tascheri, Renzo and Somhlaba, Sobahle and Arnould, John P. Y.} } @article {7587, title = {Comparison of approaches for incorporating depredation on fisheries catches into Ecopath}, journal = {ICES Journal of Marine Science}, year = {2020}, month = {Jan-11-2022}, issn = {1054-3139}, doi = {10.1093/icesjms/fsaa219}, url = {https://academic.oup.com/icesjms/advance-article/doi/10.1093/icesjms/fsaa219/6000671}, author = {Clavareau, Lyndsay and Marzloff, Martin P and Trenkel, Verena M and Bulman, Catherine M and Gourguet, Sophie and Le Gallic, Bertrand and Hernvann, Pierre-Yves and Clara P{\'e}ron and Nicolas Gasco and Faure, Johanna and Tixier, Paul}, editor = {Northridge, Simon} } @article {7114, title = {The dance of the Cape gannet may contain social information on foraging behaviour}, journal = {Animal Behaviour}, volume = {166}, year = {2020}, pages = {95-108}, abstract = {Social information percolates through a variety of channels to influence animal decision making, with a notable effect on reproductive and feeding success. Colonial central place foragers can reduce time to locate ephemeral food patches and/or increase foraging rate by following their informed peers, parasitizing direction of returning successful foragers, or being intentionally informed on distant food locations at the colony (e.g. the waggle dance of the honey bee). Ceremonial behaviours may also deliver social foraging information between mates, which can spread inadvertently to neighbours. Here we tested for information display in Cape gannets, Morus capensis, a socially monogamous species, during the elaborate dance ceremony performed each time a partner returns to the nest during the breeding season. We tracked fine-scale foraging behaviour of gannets using bird-borne GPS recorders, and videorecorded their subsequent dance ceremony, which involved up to 14 different displays. As we hypothesized, dance characteristics were associated with foraging trip features. Notably, overall dance duration was negatively linked to foraging trip duration, which was highly positively correlated with foraging range, foraging path length and time spent foraging during the trip. Overall dance duration was also negatively linked with distance to the main foraging grounds. Additionally, the duration of preening behaviour was related to the bearing of the main feeding spot. The latter relationship was supported by a Bayesian model averaging analysis, allowing inferences robust to multiple comparisons. Overall, ceremonial behaviour may provide social foraging information on feeding locations, while evidence for further information transfer to the mate or neighbours was not tested here. Frequent updating on prey spatial distribution, inadvertently communicated or not, should be particularly valuable for predators tracking ephemeral prey patches, providing an additional advantage to colonial living. Our results may have strong implications for cultural evolution in animal societies.}, url = {https://www.sciencedirect.com/science/article/pii/S0003347220301718}, author = {Courbin, Nicolas and Chinho, Tendai and Pichegru, Lorien and Verma-Gr{\'e}millet, Ambalika and Clara P{\'e}ron and Ryan, Peter G and Gr{\'e}millet, David} } @article {7573, title = {No way home: collapse in northern gannet survival rates point to critical marine ecosystem perturbation}, journal = {Marine Biology}, volume = {167}, year = {2020}, month = {Jan-12-2020}, issn = {0025-3162}, doi = {10.1007/s00227-020-03801-y}, url = {http://link.springer.com/10.1007/s00227-020-03801-y}, author = {Gr{\'e}millet, David and Clara P{\'e}ron and Lescro{\"e}l, Am{\'e}lie and Fort, J{\'e}r{\^o}me and Patrick, Samantha C. and Besnard, Aur{\'e}lien and Provost, Pascal} } @article {7565, title = {Time-Dynamic Food Web Modeling to Explore Environmental Drivers of Ecosystem Change on the Kerguelen Plateau}, journal = {Frontiers in Marine Science}, volume = {7}, year = {2020}, pages = {641}, abstract = {Understanding the impacts of climate and fishing on marine systems is important for ecosystem-based management in the Southern Ocean, but can be difficult to evaluate due to patchy data in space and time. We developed the first time-dynamic food web model for the Kerguelen Plateau using Ecopath with Ecosim to explore likely drivers of change in this relatively data-poor region. The Kerguelen Plateau is located at the centre of intersecting frontal systems and is inhabited by one of the largest populations of the commercially important Patagonian toothfish. We used this model to evaluate the environmental and human drivers of food web dynamics in the region by calibrating it with French and Australian fisheries data from 1997{\textendash}2018 and biomass data for the period 1986{\textendash}2018. Fishing was not identified as a driver of food web dynamics within this model, which could indicate that current management strategies are sustainable. A correlation analysis with environmental parameters likely to drive food web dynamics (sea surface temperature, zonal wind, Southern Annular Mode and chlorophyll a concentration) highlighted cool sea surface temperature, higher zonal wind speeds and negative phases of the Southern Annular Mode as important drivers of change, particularly during the summer. As the Southern Ocean is predicted to warm and winds are expected to intensify under future climate change, our study illustrates the importance of considering environmental change in ecosystem management.}, issn = {2296-7745}, doi = {10.3389/fmars.2020.00641}, url = {https://www.frontiersin.org/article/10.3389/fmars.2020.00641}, author = {Subramaniam, Roshni C. and Melbourne-Thomas, Jessica and Corney, Stuart P. and Alexander, Karen and Clara P{\'e}ron and Ziegler, Philippe and Swadling, Kerrie M.} } @article {6661, title = {Exploration during early life: distribution, habitat and orientation preferences in juvenile king penguins}, journal = {Movement Ecology}, volume = {7}, year = {2019}, month = {Jan-12-2019}, abstract = {Background

The early life of marine apex predators is poorly known, particularly for diving species. The orientation and foraging skills are presumably less developed in juveniles than in adults, especially during their first year at sea when juveniles might disperse further than adults.

Methods

Over two years of monitoring, we tracked the movements of 17 juvenile king penguins (Aptenodytes patagonicus,\ ~ 1 year old) using satellite relay tags from Crozet Archipelago (Southern Indian Ocean), starting when birds left their natal colony for the first time. For comparison we also tagged 6 non-breeding adults, which at that stage, similar to juveniles, are unhampered by reproductive constraints and might roam further than breeders. We used a combination of cluster analysis and habitat modelling to investigate and compare the movement patterns and habitat use of experienced (non-breeding adults) and non-experienced (juveniles) individuals.

Results

While juvenile penguins and non-breeding adults followed similar routes, the movements by adults started later in the season and ranged over a considerably smaller area than juveniles. Net squared displacement analysis revealed that both groups did not move to a specific wintering area. Changes in direction of juveniles in respect to their departure island were similar and synchronous for both years. Habitat models revealed that foraging behaviour was affected by environmental variables such as wind or current speeds, sea surface temperature, or oceanic productivity, for both stages. Analysis of tracks revealed that birds moved predominately perpendicular or against the main direction of the Antarctic Circumpolar Current and the prevailing wind during austral summer (juveniles only) and autumn (juveniles and non-breeding adults). However, both juveniles and adults were more likely to move against the prevailing winds if productivity increased along their trajectories.

Conclusions

The exceptional duration of our tracking study provided unprecedented insights into the distribution, habitat preferences and orientation of two poorly known life history stages of an expert avian diver. Our study suggests that juveniles might use both innate and learnt skills to reach profitable foraging areas during their first year at sea, which is critical in long-lived species.}, doi = {10.1186/s40462-019-0175-3}, url = {https://link.springer.com/article/10.1186/s40462-019-0175-3$\#$citeas}, author = {Orgeret, F. and Clara P{\'e}ron and Enstipp, M. R. and Delord, K. and Weimerskirch, H. and Bost, C. A.} } @article {6683, title = {Fishery discards do not compensate natural prey shortage in Northern gannets from the English Channel}, journal = {Biological Conservation}, volume = {236}, year = {2019}, month = {Jan-08-2019}, pages = {375 - 384}, issn = {00063207}, doi = {10.1016/j.biocon.2019.05.040}, url = {https://www.sciencedirect.com/science/article/abs/pii/S0006320718310930}, author = {Le Bot, Tangi and Lescro{\"e}l, Am{\'e}lie and Fort, J{\'e}r{\^o}me and Clara P{\'e}ron and Gimenez, Olivier and Provost, Pascal and Gr{\'e}millet, David} } @conference {6682, title = {Important readjustments in the biomass and distribution of groundfish species in the northern part of the Kerguelen Plateau and Skiff Bank.}, booktitle = {The Kerguelen Plateau: marine ecosystem and fisheries}, year = {2019}, pages = {135-184}, publisher = {Australian Antarctic Division}, organization = {Australian Antarctic Division}, edition = {Welsford, D., J. Dell and G. Duhamel (Eds)}, address = { Kingston, Tasmania, Australia.}, isbn = {978-1-876934-30-9}, url = {http://heardisland.antarctica.gov.au}, author = {Guy Duhamel and Clara P{\'e}ron and Sin{\`e}gre, Romain and Charlotte Chazeau and Nicolas Gasco and M{\'e}lyne Hautecoeur and Martin, Alexis and Durand, Isabelle and Causse, Romain} } @article {6664, title = {Patterns of at-sea behaviour at a hybrid zone between two threatened seabirds}, journal = {Scientific Reports}, volume = {9}, year = {2019}, month = {Jan-12-2019}, doi = {10.1038/s41598-019-51188-8}, url = {http://www.nature.com/articles/s41598-019-51188-8}, author = {Austin, Rhiannon E. and Wynn, Russell B. and Votier, Stephen C. and Trueman, Clive and McMinn, Miguel and Rodr{\'\i}guez, Ana and Suberg, Lavinia and Maurice, Louise and Newton, Jason and Genovart, Meritxell and Clara P{\'e}ron and Gr{\'e}millet, David and Guilford, Tim} } @proceedings {6684, title = {Shark bycatch observed in the bottom longline fishery off the Kerguelen islands in 2006-2016, with a focus on Etmopterus viator}, year = {2019}, month = {2019}, publisher = {Australian Antarctic Division}, edition = {Welsford, D., J. Dell and G. Duhamel (Eds)}, address = {Kingston, Tasmania, Australia}, author = {Charlotte Chazeau and S.P. Igl{\'e}sias and Clara P{\'e}ron and Nicolas Gasco and Martin, Alexis and Guy Duhamel} } @article {6799, title = {Predicting krill swarm characteristics important for marine predators foraging off East Antarctica}, journal = {Ecography}, volume = {41}, year = {2018}, pages = {996 - 1012}, issn = {0906-7590}, url = {https://onlinelibrary.wiley.com/doi/full/10.1111/ecog.03080}, author = {Bestley, Sophie and Raymond, Ben and Gales, NJ and Harcourt, RG and Hindell, Mark A and Jonsen, ID and Nicol, S and Clara P{\'e}ron and Sumner, MD and Weimerskirch, H. and Wotherspoon, S. and Cox, MJ} } @article {6798, title = {Short-term prey field lability constrains individual specialisation in resource selection and foraging site fidelity in a marine predator}, journal = {Ecology Letters}, volume = {21}, year = {2018}, month = {07-2018}, pages = {1043 - 1054}, abstract = {Spatio-temporally stable prey distributions coupled with individual foraging site fidelity are predicted to favour individual resource specialisation. Conversely, predators coping with dynamic prey distributions should diversify their individual diet and/or shift foraging areas to increase net intake. We studied individual specialisation in Scopoli{\textquoteright}s shearwaters (Calonectris diomedea) from the highly dynamic Western Mediterranean, using daily prey distributions together with resource selection, site fidelity and trophic-level analyses. As hypothesised, we found dietary diversification, low foraging site fidelity and almost no individual specialisation in resource selection. Crucially, shearwaters switched daily foraging tactics, selecting areas with contrasting prey of varying trophic levels. Overall, information use and plastic resource selection of individuals with reduced short-term foraging site fidelity allow predators to overcome prey field lability. Our study is an essential step towards a better understanding of individual responses to enhanced environmental stochasticity driven by global changes, and of pathways favouring population persistence.}, doi = {10.1111/ele.2018.21.issue-710.1111/ele.12970}, url = {http://onlinelibrary.wiley.com/wol1/doi/10.1111/ele.12970}, author = {Courbin, Nicolas and Besnard, Aur{\'e}lien and Clara P{\'e}ron and Saraux, Claire and Fort, J{\'e}r{\^o}me and Perret, Samuel and Tornos, J{\'e}r{\'e}my and Gr{\'e}millet, David} } @article {6797, title = {Testing the transferability of track-based habitat models for sound marine spatial planning}, journal = {Diversity and Distribution}, volume = {24}, year = {2018}, month = {12/2018}, pages = {1772-1787}, abstract = {Aim

Species distribution models (SDMs) are statistical tools aiming at mapping and predicting species distributions across landscapes. Data acquisition being limited in space and time, SDM are commonly used to predict species distribution in unsampled areas or years, with the expectation that modelled habitat{\textendash}species relationships will hold across spatial or temporal contexts (i.e., model transferability). This key aspect of habitat modelling has major implications for spatial management, yet it has received limited attention, especially in the dynamic marine realm. Our aims were to test geographical and temporal habitat model transferability and to make recommendations for future population-scale habitat modelling.

Location

Two contrasted regions of the North Western Mediterranean Sea: the cold and productive waters of the Gulf of Lion, and the warm and oligotrophic waters of Corsica.

Methods

We GPS-tracked 189 Scopoli{\textquoteright}s shearwaters, Calonectris diomedea, at four breeding sites during the chick-rearing period in 2011 and 2012 (418 foraging trips), and analysed their fine-scale foraging behaviour. We then built colony-specific habitat models (GAMMs) to test SDM geographical and temporal transferability and investigated the effect of extrinsic (environmental extrapolation) and intrinsic (trip characteristics) factors on transferability.

Results

Scopoli{\textquoteright}s shearwaters from our four study sites had comparable foraging strategies (as assessed from trip characteristics and isotopic diet tracers). Despite such similarities, SDMs revealed colony-specific habitat associations. Geographical and temporal model transferability was better within than between regions.

Main conclusions

Crucially, our study illustrates how habitat{\textendash}species relationships can vary between colonies located \<200\ km apart, and underlines the effect of spatio-temporal extrapolation in habitat modelling. We therefore warn that defining adequate spatial scales for model predictions is critical to sound marine spatial planning and conservation.}, keywords = {biologging, habitat modelling; transferability;central place foragers}, doi = {10.1111/ddi.12832}, url = {https://onlinelibrary.wiley.com/doi/full/10.1111/ddi.12832}, author = {Clara P{\'e}ron and Authier, Matthieu and Gr{\'e}millet, David} } @article {6827, title = {Spatial overlaps of foraging and resting areas of black-legged kittiwakes breeding in the English Channel with existing marine protected areas}, journal = {Marine biology}, volume = {164}, year = {2017}, pages = {119}, doi = {https://doi.org/10.1007/s00227-017-3151-8}, url = {https://link.springer.com/article/10.1007/s00227-017-3151-8$\#$citeas}, author = {Ponchon, Aurore and Aulert, Christophe and Le Guillou, Gilles and Gallien, Fabrice and Clara P{\'e}ron and Gr{\'e}millet, David} } @article {6800, title = {Variable selection and accurate predictions in habitat modelling: a shrinkage approach}, journal = {Ecography}, volume = {40}, year = {2017}, pages = {549-560}, abstract = {Habitat modelling is increasingly relevant in biodiversity and conservation studies. A typical application is to predict potential zones of specific conservation interest. With many environmental covariates, a large number of models can be investigated but multi-model inference may become impractical. Shrinkage regression overcomes this issue by dealing with the identification and accurate estimation of effect size for prediction. In a Bayesian framework we investigated the use of a shrinkage prior, the Horseshoe, for variable selection in spatial generalized linear models (GLM). As study cases, we considered 5 datasets on small pelagic fish abundance in the Gulf of Lion (Mediterranean Sea, France) and 9 environmental inputs. We compared the predictive performances of a simple kriging model, a full spatial GLM model with independent normal priors for regression coefficients, a full spatial GLM model with a Horseshoe prior for regression coefficients and 2 zero-inflated models (spatial and non-spatial) with a Horseshoe prior. Predictive performances were evaluated by cross-validation on a hold-out subset of the data: models with a Horseshoe prior performed best, and the full model with independent normal priors worst. With an increasing number of inputs, extrapolation quickly became pervasive as we tried to predict from novel combinations of covariate values. By shrinking regression coefficients with a Horseshoe prior, only one model needed to be fitted to the data in order to obtain reasonable and accurate predictions, including extrapolations.}, doi = {10.1111/ecog.01633}, url = {https://onlinelibrary.wiley.com/doi/full/10.1111/ecog.01633}, author = {Authier, Matthieu and Saraux, Claire and Clara P{\'e}ron} } @article {4287, title = {Modelling spatial distribution of Patagonian toothfish through life-stages and sex and its implications for the fishery on the Kerguelen Plateau}, journal = {Progress in Oceanography}, volume = {141}, year = {2016}, pages = {81 - 95}, abstract = {

Abstract Size and sex specific habitat preferences are common in animal populations and can have important implications for sound spatial management of harvested species. Patagonian toothfish (Dissostichus eleginoides) is a commercially exploited fish species characterised by its longevity (\>50 yo) and its extremely broad distribution in depths ranging from 10 m to 2500 m on most of the Plateaux, banks and seamounts of the Southern Ocean. As many bentho-pelagic fish species, Patagonian toothfish exhibits sexual dimorphism and ontogenetic habitat shift towards deeper waters as they grow. In this study, we modelled the spatial structure of Patagonian toothfish population (median total length and sex composition) in a data-rich area, the Kerguelen Plateau (Southern Indian Ocean), to better understand the ecological drivers of their distributional patterns and inform current and future fishery management strategies. We applied spatially-explicit statistical models to quantify and predict the effects of the complex topography of the Kerguelen Plateau in structuring the spatial distribution of Patagonian toothfish total length and sex ratio, while controlling for gear selectivity and season. Model predictions showed that juvenile toothfish live in shallow regions (shelf and banks) and move downward progressively up to 600 m while they grow. Between 600 m and 1200 m, the downward movement stops and fish settle at their preferred depths. While in this depth range, fish are \~{}75 cm long and most vulnerable to fisheries. As they approach maturity large fish move downward to deep-sea habitats (from 1200 m to \>2300 m) and head towards the spawning grounds on the western side of the plateau and around Skiff Bank. Importantly, the sex ratio was not evenly distributed across the Plateau; prediction maps revealed a higher proportion of females in the South whereas a strong male-bias sex ratio (70\%) occurred in the North-West. Large-scale prediction maps derived from our models assisted in developing hypotheses regarding ecological drivers of Patagonian toothfish habitat-use and movement across different life stages and sex. Such hypotheses are crucial to inform management strategies of this multijurisdictional fishery (France and Australia) at the spatial and temporal scales over which natural processes and fishery extend.

}, issn = {0079-6611}, doi = {10.1016/j.pocean.2015.12.003}, url = {http://www.sciencedirect.com/science/article/pii/S007966111530015X}, author = {Clara P{\'e}ron and Dirk C. Welsford and Philippe Ziegler and Timothy D. Lamb and Nicolas Gasco and Charlotte Chazeau and Romain Sin{\`e}gre and Guy Duhamel} } @article {6828, title = {Seeing the ocean through the eyes of seabirds: a new path for marine conservation?}, journal = {Marine Policy}, volume = {68}, year = {2016}, pages = {212{\textendash}220}, doi = {https://doi.org/10.1016/j.marpol.2016.02.015}, url = {https://www.sciencedirect.com/science/article/pii/S0308597X16000671}, author = {Lescro{\"e}l, Am{\'e}lie and Mathevet, Rapha{\"e}l and Clara P{\'e}ron and Authier, Matthieu and Provost, Pascal and Takahashi, Akinori and Gr{\'e}millet, David} } @article {6829, title = {Starving seabirds: unprofitable foraging and its fitness consequences in Cape gannets competing with fisheries in the Benguela upwelling ecosystem}, journal = {Marine biology}, volume = {163}, year = {2016}, pages = {35}, author = {Gr{\'e}millet, David and Clara P{\'e}ron and Kato, Akiko and Am{\'e}lineau, Fran{\c c}oise and Ropert-Coudert, Yan and Ryan, Peter G and Pichergru, Lorien} } @article {6831, title = {Adult and juvenile European seabirds at risk from marine plundering off West Africa}, journal = {Biological Conservation}, volume = {182}, year = {2015}, pages = {143{\textendash}147}, author = {Gr{\'e}millet, David and Clara P{\'e}ron and Provost, Pascal and Lescro{\"e}l, Am{\'e}lie} } @article {6830, title = {Extreme climate events and individual heterogeneity shape life-history traits and population dynamics}, journal = {Ecological Monographs}, volume = {85}, year = {2015}, pages = {605{\textendash}624}, doi = {https://doi.org/10.1890/14-1834.1}, url = {https://esajournals.onlinelibrary.wiley.com/doi/full/10.1890/14-1834.1}, author = {Jenouvrier, St{\'e}phanie and Clara P{\'e}ron and Weimerskirch, H.} } @article {6832, title = {Irreplaceable area extends marine conservation hotspot off Tunisia: insights from GPS-tracking Scopoli{\textquoteright}s shearwaters from the largest seabird colony in the Mediterranean}, journal = {Marine biology}, volume = {161}, year = {2014}, pages = {2669{\textendash}2680}, author = {Gr{\'e}millet, David and Clara P{\'e}ron and Pons, Jean-Baptiste and Ouni, Rhida and Authier, Matthieu and Th{\'e}venet, Matthieu and Fort, J{\'e}r{\^o}me} } @article {6834, title = {Windscape and tortuosity shape the flight costs of northern gannets}, journal = {Journal of Experimental Biology}, volume = {217}, year = {2014}, pages = {876{\textendash}885}, doi = {10.1242/jeb.097915 }, url = {https://jeb.biologists.org/content/217/6/876.short}, author = {Am{\'e}lineau, Fran{\c c}oise and Clara P{\'e}ron and Lescro{\"e}l, Am{\'e}lie and Authier, Matthieu and Provost, Pascal and Gr{\'e}millet, David} } @article {6836, title = {Designing observational biologging studies to assess the causal effect of instrumentation}, journal = {Methods in Ecology and Evolution}, volume = {4}, year = {2013}, pages = {802{\textendash}810}, doi = { https://doi.org/10.1111/2041-210X.12075}, url = {https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/2041-210X.12075}, author = {Authier, Matthieu and Clara P{\'e}ron and Mante, Alain and Vidal, Patrick and Gr{\'e}millet, David} } @article {6835, title = {Importance of coastal Marine Protected Areas for the conservation of pelagic seabirds: The case of Vulnerable yelkouan shearwaters in the Mediterranean Sea}, journal = {Biological conservation}, volume = {168}, year = {2013}, pages = {210{\textendash}221}, author = {Clara P{\'e}ron and Gr{\'e}millet, David and Prudor, Aur{\'e}lien and Pettex, Emeline and Saraux, Claire and Soriano-Redondo, Andrea and Authier, Matthieu and Fort, J{\'e}r{\^o}me} } @article {6837, title = {Space partitioning without territoriality in gannets}, journal = {Science}, volume = {341}, year = {2013}, pages = {68{\textendash}70}, doi = {10.1126/science.1236077 }, url = {https://science.sciencemag.org/content/341/6141/68}, author = {Wakefield, Ewan and Bodey, Thomas and Bearhop, Stuart and Blackburn, Jez and Colhoun, Kendrew and Davies, Rachel and Dwyer, Ross and Green, Jonathan and Gr{\'e}millet, David and Clara P{\'e}ron and others} } @article {6838, title = {Tracking through life stages: adult, immature and juvenile autumn migration in a long-lived seabird}, journal = {PloS one}, volume = {8}, year = {2013}, doi = {10.1371/journal.pone.0072713}, url = {https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0072713}, author = {Clara P{\'e}ron and Gr{\'e}millet, David} } @article {6839, title = {Projected poleward shift of king penguins{\textquoteright}(Aptenodytes patagonicus) foraging range at the Crozet Islands, southern Indian Ocean}, journal = {Proceedings of the Royal Society B: Biological Sciences}, volume = {279}, year = {2012}, pages = {2515{\textendash}2523}, doi = {10.1098/rspb.2011.2705}, url = {https://royalsocietypublishing.org/doi/full/10.1098/rspb.2011.2705}, author = {Clara P{\'e}ron and WEIMERSKIRCH, Henri and Bost, Charles-Andr{\'e}} } @article {6840, title = {Conserving pelagic habitats: seascape modelling of an oceanic top predator}, journal = {Journal of applied ecology}, volume = {48}, year = {2011}, pages = {121{\textendash}132}, doi = {10.1111/j.1365-2664.2010.01910.x}, url = {https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2664.2010.01910.x}, author = {Louzao, Maite and Pinaud, David and Clara P{\'e}ron and Delord, K. and Wiegand, Thorsten and WEIMERSKIRCH, Henri} } @article {6841, title = {At-sea distribution and diet of an endangered top predator: relationship between white-chinned petrels and commercial longline fisheries}, journal = {Endangered species research}, volume = {13}, year = {2010}, pages = {1{\textendash}16}, doi = {10.3354/esr00309 }, url = {https://www.int-res.com/abstracts/esr/v13/n1/p1-16/}, author = {Delord, K. and C{\'e}dric Cotte and Clara P{\'e}ron and MARTEAU, C{\'e}dric and Patrice Pruvost and Nicolas Gasco and Guy Duhamel and Cherel, Yves and WEIMERSKIRCH, Henri} } @article {6843, title = {Interdecadal changes in at-sea distribution and abundance of subantarctic seabirds along a latitudinal gradient in the Southern Indian Ocean}, journal = {Global Change Biology}, volume = {16}, year = {2010}, pages = {1895{\textendash}1909}, doi = {10.1111/j.1365-2486.2010.02169.x}, url = {https://onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2486.2010.02169.x}, author = {Clara P{\'e}ron and Authier, Matthieu and Barbraud, C. and DELORD, Karine and Besson, Dominique and WEIMERSKIRCH, Henri} } @article {6842, title = {Seasonal variation in oceanographic habitat and behaviour of white-chinned petrels Procellaria aequinoctialis from Kerguelen Island}, journal = {Marine Ecology Progress Series}, volume = {416}, year = {2010}, pages = {267{\textendash}284}, doi = {10.3354/meps08785}, url = {https://www.int-res.com/abstracts/meps/v416/p267-284/}, author = {Clara P{\'e}ron and Delord, K. and Phillips, Richard and Charbonnier, Yohan and MARTEAU, C{\'e}dric and Louzao, Maite and WEIMERSKIRCH, Henri} }