Gaël Le Croizier

Researcher @ird_fr @LemarLab
Trophic ecology and ecotoxicology of marine predators

[Gaël Le Croizier @LeCroizier]

New paper out: "Mercury isotopes as tracers of ecology and metabolism in two sympatric shark species".
https://t.co/LcZtUb1ahg
A collaboration between @GET_Hg @LemarLab @UMREntropie

[Nathan Pacoureau @NatPacoureau]

Thrilled to finally see this work published! It was a lot of hard work, but made so much easier and enjoyable with an amazing team of authors. Grateful for the collaboration and proud of what we've achieved together!

[IRD.fr @ird_fr]

🎥 Au programme de @Pariscience : "L'ADNe, une révolution dans les eaux du Gabon", projection en avant-première avec @Ushuaia_TV le 26/10 de 17h15 à 19h00
▶️Après la projection, retrouvez :
Natacha Giler, réalisatrice & François Le Loc’h, chercheur #IRD
🎟️https://t.co/vE3oZMauBf

[South African Network for Coastal&Oceanic Research @SANCORcommunity]

🦈Attention #Shark #Researchers

Investigate #elasmobranch movement in SA🇿🇦 with a #grant from @ATAP_ZA & @sharkcentre!

15-20 acoustic transmitters available for studies within the ATAP array - St Helena Bay to Moz🇲🇿 border

⏳Apply by 27 Sep
https://t.co/5byESaecoq @NRF_SAIAB

[Pierre Cresson @p_cresson]

2 permanent positions open in my lab :
- 1 trophic ecology researcher : https://t.co/hJ6qI8PGZk
- 1 lab technician dedicated to the analysis of fish stomach contents https://t.co/GKsIDrGTu7

[Charlie Huveneers @HuveneersSSEG]

New white shark study: if you're a juvenile white shark on the Australian east coast, your diet switches in winter with mid-trophic level species becoming more important. Led by @Bec_Lipscombe
https://t.co/x31o979Gn0 📷Andrew Fox

[Lucien Besnard @Lucien_Besnard]

🦈New paper out 🦈
In the Gulf of California 🇲🇽 we investigated the #trophic #ecology of scalloped and smooth hammerhead #sharks, along with co-occurring Pacific sharpnose sharks, using S/C/N #isotopes and fatty acid composition
@CicimarIpn @LemarLab @cibnoroficial

[IRD.fr @ird_fr]

🏆🎥 "L’#ADNe, une révolution dans les eaux du #Gabon" de Natacha Giler a reçu le Prix du 1er film scientifique à @Pariscience!

🎬Un projet de film documentaire soutenu par l'#IRD avec François Le Loch, écologue @LemarLab & Jean Mve Beh, DG écosystèmes aquatiques @ForetmerGOUVGA

[Gauthier Schaal @GSchaal_UBO]

Les travaux de @Lucien_Besnard à l'honneur ce mois-ci au @LemarLab !
Le mercure comme horloge isotopique du temps de résidence côtier et de la migration des requins-marteaux https://t.co/ug9dU9pBMb

[Lucien Besnard @Lucien_Besnard]

🦈 New research article available in @JAppliedEcology : "Mercury isotope clocks predict coastal residency and migration timing of hammerhead sharks"

Δ199Hg + Isotopic⏱️➡️Smooth hammerhead shark ontogenetic migration timing ‼️

[Brandyn Lucca, PhD @brandynlucca]

Congratulations to @Lucien_Besnard for a wonderful dissertation defense discussing his work using stable isotopes (N, C, Hg) as proxies for measuring shark movement ecology, trophic interactions, & more. Very impressive visuals that distill complex topics into digestible tidbits.

[Jeroen Sonke @JeroenSonke]

France offers 3 months emergency stipends to Ukraine scientists and family with possibility to extend via the PAUSE programme
https://t.co/5t0bJDEujA
@cdf1530
#ScienceForUkraine
@cnrs
#ukraine

[Jeroen Sonke @JeroenSonke]

Climate change is expected to impact Hg cycling and exposure. New @EnvSciTech study by @renedo_marina and David Point @GET_Hg &co finds no link between ENSO and sea bird Hg in Peruvian Upwelling Zone.
https://t.co/h6KXENp8wM
@ird_fr @CNRS @GET_isotopes

[Yannis Papastamatiou @Dr_Yannis]

We are recruiting a post-doc to investigate the ecological role of sharks. Experience with large datasets and modelling skills are a major asset. Come and work with myself and @MikeHeithaus at FIU! @FIUCASE https://t.co/FuWhdGBcqk

[Jeroen Sonke @JeroenSonke]

@martinjiskra and @LarsEric_Hg lead our new @Nature study on the #mercury isotope composition of sea water. Turns out the ocean isotope fingerprint looks more like gaseous Hg(0) than rainfall Hg(II) https://t.co/6QEj69PLaT
@MIOceanologie @GET_Toulouse @INSU_CNRS
and @UniBasel

[IsoEcol2022 @IsoEcol2022]

@IsoEcol2021 interlude will start on Wednesday 19 (13:50-19:00 CET - GMT+2 Vienna). More news are coming very soon 📨 Meanwhile the final #program

[Lucien Besnard @Lucien_Besnard]

I am really happy to share my (first) first author publication: "Foraging depth depicts resource partitioning and contamination level in a pelagic #shark assemblage: insights from #mercury stable #isotopes" (@LeCroizier @GSchaal_UBO)
https://t.co/NlahQOVHXz

[Elasmobranch Society @ElasmoSociety]

As top predators, White Sharks can accumulate chemical toxins from their prey. @LeCroizier and colleagues looked at the dietary origin of mercury in NE Pacific White Sharks and found most of it comes from the oceanic twilight zone. #ElasmoScienceSunday https://t.co/kAopPkon6t

[Gauthier Schaal @GSchaal_UBO]

New paper out, a study masterfully carried out by @LeCroizier. Mercury contamination in great white sharks is linked to intense foraging on deep water sources.
The Twilight Zone as a Major Foraging Habitat and Mercury Source for the Great White Shark https://t.co/Dmmm1hfkly

[Dr. Pearse J Buchanan @PearseJBuchanan]

This Tuesday at 1600 (GMT) : Marc Long (@marcflorianlong
) will talk about "the effects of copper toxicity on the dinoflagellate, Alexandrium minutum, and its allelochemical potency!"

Join us --> https://t.co/dJdJlwtaQn

Please share among your networks! @Env_Sci @livunioceansci

[Marine Ecology Progress Series (MEPS) @MEPS_IR]

Authors of this study show that porbeagle sharks modify dive behavior seasonally and in response to hurricanes, suggesting different environmental preferences determine habitat use and behavior over time.

https://t.co/YpBiXI8S3A