Andreas Ravache

@andreasravache.bsky.social

PhD in Population Biology and Ecology | Postdoc @mnhn.fr ๐Ÿ‡ซ๐Ÿ‡ท Windfarms impact | Seabirds Ecology | Biologging | Biostatistics | Stable Isotopes | Co-funder of @birdnewcaledonia.bsky.social

[NEW PAPER] What a surprising behavior ! ๐Ÿฆ‡Greater noctules (๐˜•๐˜บ๐˜ค๐˜ต๐˜ข๐˜ญ๐˜ถ๐˜ด ๐˜ญ๐˜ข๐˜ด๐˜ช๐˜ฐ๐˜ฑ๐˜ต๐˜ฆ๐˜ณ๐˜ถ๐˜ด) soar above 400 meters, using echolocation to chase and snatch nocturnal migratory passerines mid-flightโ€”unlocking a high-altitude feast most predators canโ€™t reach. #batresearch #bioacoustics

Greater noctule bats prey on and consume passerines in flight

Despite billions of passerines seasonally migrating during the night at high altitudes, only three bat species have been found to consistently tap into this rich prey resource. However, it remains unk...

science.org

[ NEW TEAM PAPER ] ๐Ÿฆ‡๐ŸŽค Passive acoustic monitoring of ๐—ฏ๐—ฎ๐˜๐˜€ holds huge potential, but how do bat counts correlate with actual numbers? Which factors affect detectability? New metrics & models could revolutionize our understanding. Time to standardize protocols & share data! #BatResearch #Bioacoustics

Current frontiers in the passive acoustic monitoring of bats

Passive acoustic monitoring of bats is used in a growing number of studies in applied and basic research, from local to global scales. Despite the publication of good-practice recommendations, sev...

besjournals.onlinelibrary.wiley.com

[ #Seabirds influence vegetation ] ๐Ÿ‘ฉโ€๐Ÿ”ฌ Isotopes & nutrients were compared at an active, abandoned, and control shearwater site ๐Ÿ“ˆ Vegetation & herbivores showed ฮดยนโตN enrichment from guano, but soil ฮดยนโตN remained unchanged ๐Ÿ๏ธPhosphorus and potassium concentraitons suggest that seabirds fertilize soils

Adrift Lab (Marine Science)@adriftlab.bsky.social ยท last yr.

โญ#NewPaper alertโญ Dr Megan Grant's last chapter of her #AdriftLab #PhD thesis focuses on the key role #seabirds play in transporting nutrients from the ocean to their breeding sites (in this case, #LordHoweIsland) doi.org/10.1002/ece3...

[ ๐‘บ๐’„๐’Š๐’†๐’๐’„๐’† ๐‘ผ๐’๐’…๐’†๐’“ ๐‘ท๐’“๐’†๐’”๐’”๐’–๐’“๐’† ] ๐Ÿ” While most researchers report positive interactions that facilitate the transfer of their findings, interactions within the wind energy ๐Ÿ’จ and agrochemical sectors ๐Ÿšœare more often negative โ›” especially when the research conflicts with political or economic interests ๐Ÿ’ถ

Bat Research Team@bat-cesco.bsky.social ยท last yr.

โš ๏ธ Our study published today alerts about the ๐ฌ๐ญ๐š๐ญ๐ž ๐จ๐Ÿ ๐ข๐ง๐ญ๐ž๐ซ๐š๐œ๐ญ๐ข๐จ๐ง๐ฌ ๐›๐ž๐ญ๐ฐ๐ž๐ž๐ง ๐ซ๐ž๐ฌ๐ž๐š๐ซ๐œ๐ก๐ž๐ซ๐ฌ ๐ข๐ง ๐ž๐œ๐จ๐ฅ๐จ๐ ๐ฒ ๐š๐ง๐ ๐ฌ๐จ๐œ๐ข๐จ-๐ž๐œ๐จ๐ง๐จ๐ฆ๐ข๐œ ๐ฌ๐ญ๐š๐ค๐ž๐ก๐จ๐ฅ๐๐ž๐ซ๐ฌโš™๏ธ โ›” Negative interactions include greenwashing, manufacture of doubt and abandonment of research topicsโ— โœ… Solutions are discussed DOI : 10.1016/j.biocon.2025.111324

๐Ÿฝ๏ธ๐€ ๐ง๐จ๐ง-๐ข๐ง๐ฏ๐š๐ฌ๐ข๐ฏ๐ž ๐ฆ๐ž๐ญ๐ก๐จ๐ ๐ญ๐จ ๐ฌ๐ญ๐ฎ๐๐ฒ ๐๐ข๐ž๐ญ ! The authors combined buccal swabbing and metabarcoding to investigate the diet of #Seabirds species. This method appears to be minimally invasive and relatively easy to implement. A complement to approaches based on regurgitates or fecal samples?

Advancing Seabird Diet Studies Through Buccal Swabbing for DNA Metabarcoding

Determining the diet of wide-ranging, pelagic seabirds is challenging. In this study, we investigated buccal swabbing and DNA metabarcoding to describe the diet of Manx shearwaters (Puffinus puffinus...

onlinelibrary.wiley.com

๐ŸŽ‰New paper out! My first as last author ๐Ÿ”—http://www.marineornithology.org/PDF/53_1/53_1_1-11.pdf ๐Ÿงต Let me walk you through years of research on a rare, elusive & endangered #Seabirds : the Tahiti petrel A story of exploration, discovery, and challenges in conservation science๐Ÿ‘‡ ๐Ÿ“ทHadoram Shirihai

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๐Ÿฝ๏ธ๐Ÿฆ Proteomic studies reveals that #Seabirds with plastic in their stomachs had signs of neurodegenerative disease, kidney and liver disease as well as damage to the lining of the stomach โ˜ ๏ธWhile not always lethal, microplastics will undoubtedly have long-term effects on populations.

Seabirds in crisis: Plastic ingestion induces proteomic signatures of multiorgan failure and neurodegeneration

Plastic consumption in seabirds causes blood signatures of widespread organ damage including brain, stomach, kidney, and liver.

science.org

[๐‘ช๐’๐’๐’‡๐’†๐’“๐’†๐’๐’„๐’†] Thrilled to share the first results of our APOCOPE project at the Renewable Energy & Biodiversity conference in Paris! A great opportunity to highlight our work on wind farms and wildlife. ๐ŸŒฌ๏ธ๐Ÿฆ‡๐ŸŒฟ

Bat Research Team@bat-cesco.bsky.social ยท last yr.

[๐‘…๐‘’๐‘›๐‘’๐‘ค๐‘Ž๐‘๐‘™๐‘’ ๐ธ๐‘›๐‘’๐‘Ÿ๐‘”๐‘ฆ ๐‘‚๐‘๐‘ ๐‘’๐‘Ÿ๐‘ฃ๐‘Ž๐‘ก๐‘œ๐‘Ÿ๐‘ฆ ๐‘€๐‘’๐‘’๐‘ก๐‘–๐‘›๐‘”๐‘  - ๐‘ƒ๐‘Ž๐‘Ÿ๐‘–๐‘ ] @andreasravache.bsky.social investigated ๐—ณ๐—ฎ๐—ฐ๐˜๐—ผ๐—ฟ๐˜€ ๐—ถ๐—ป๐—ณ๐—น๐˜‚๐—ฒ๐—ป๐—ฐ๐—ถ๐—ป๐—ด ๐—ฏ๐—ฎ๐˜ ๐—บ๐—ผ๐—ฟ๐˜๐—ฎ๐—น๐—ถ๐˜๐˜† at wind farms ๐Ÿฆ‡ ๐Ÿ’€โ†—๏ธ near forests or wetlands ๐ŸŒณ๐Ÿ’ง ๐Ÿ’€โ†—๏ธ with low turbine ground clearance ๐Ÿ’€โ†˜๏ธ with turbine ageโŒ› ๐Ÿ›‘ Curtailment measures โ†˜๏ธ but do not eliminate mortality

๐Ÿฆ‡ Greater sac-winged bat pups acquire their vocal repertoire through a conspicuous vocal practice behavior reminiscent of babbling in human infants. Pups spend about 30% of their daily activity time babbling โ€“ and it turns out that mothers influence this behavior. elifesciences.org/articles/99474

Maternal behavior influences vocal practice and learning processes in the greater sac-winged bat

Non-tutorial feedback shapes song acquisition in a mammalian vocal learner.

elifesciences.org

๐Ÿฆ‡ Using acoustic activity to redict bat fatalities at wind farm could help to identify at-risk areas for bats, and to implement effective curtailment measures โ— #bats #conservation #bioacoustics

Bat Research Team@bat-cesco.bsky.social ยท last yr.

[๐‘…๐‘’๐‘›๐‘’๐‘ค๐‘Ž๐‘๐‘™๐‘’ ๐ธ๐‘›๐‘’๐‘Ÿ๐‘”๐‘ฆ ๐‘‚๐‘๐‘ ๐‘’๐‘Ÿ๐‘ฃ๐‘Ž๐‘ก๐‘œ๐‘Ÿ๐‘ฆ ๐‘€๐‘’๐‘’๐‘ก๐‘–๐‘›๐‘”๐‘  - ๐‘ƒ๐‘Ž๐‘Ÿ๐‘–๐‘ ] @elisesvlt.bsky.social identified a positive relationship between the acoustic activity of bats at wind turbine nacelle height and the number of fatalities ๐Ÿฆ‡ Further studies will aim to identify risk behaviors allowing to predict mortality.

๐Ÿฆ‡ During our annual meeting, "Team Chiro" spent three days presenting current challenges in our respective studies and sharing ideas to solve them. ๐Ÿ”Ž We then formed working groups around common research questions. ๐Ÿ”ฝ More information below ๐Ÿ”ฝ

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