David Jacoby
@netlab.bsky.social
Shark fanatic, with interests in movement ecology, network analysis and applied conservation.
Is bigger always better? For social animals, group size is a dilemma: big groups face more internal competition, yet hold an edge over smaller neighbors. 33 years of data on 12 wild capuchin groups reveals how these forces shape behavior. Out today in *Nat Eco & Evo*: www.nature.com/articles/s41...
#Angelsharks may be more vulnerable to #ClimateChange than we thought! Out today in @globalchangebio.bsky.social: doi.org/10.1111/gcb.... @lancasteruni.bsky.social @zslofficial.bsky.social @ulpgc.es @qmul.bsky.social @leibniz-gemeinschaft.de @lec-reefs.bsky.social 📸 @nuno_vasco_rodrigues
A lil tribute to the kelp forests along the California coast 🌊✨
Great talk by @mjw-marine.bsky.social on the predictability of European eel aggregations for improved #trap&transport management. @thefsbi.bsky.social
New paper lead by @etspencer.bsky.social We use biologging to understand why great hammerheads may specialize on large prey like other sharks. If they hunt blacktips off south Florida then they probably only have to catch a shark once per month link.springer.com/journal/442
Happy International Angel Shark Day, especially to all my wonderful colleagues @angelsharkproject.bsky.social These are a special, and heavily threatened set of species.
IUCN SSC Shark Specialist Group@iucnshark.bsky.social · last yr.Happy International Angel Shark Day from the IUCN SSC Shark Specialist Group! There are at least 24 species of angel sharks (Order Squatiniformes) and they occur across the world, from temperate to tropical waters, and from depths of <1m to 1,300m.
🎉 MAJOR OCEAN WIN! 📢 UK Government commits to ratifying the High Seas Treaty (aka the BBNJ) by the end of the year, as confirmed by Ocean Minister @emmahardymp.bsky.social at the UN Ocean Conference just now 🎉 #OceanProtection #UNOC3 #UNOC2025 #OceanWin @oceana.bsky.social @hugotagholm.bsky.social
Breaking news: it appears Emperor penguin populations in Antarctica are declining faster than predicted. Latest satellite data shows a massive 22% drop in penguin numbers over the last 15 years in key regions. This is more than double the rate of loss that experts had expected... 🧵 1/8
BIG new paper on the MegaMove project with @netlab.bsky.social - portal.lancaster.ac.uk/intranet/new... Top areas to reach 30 x 30 for marine megafauna are highlighted
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Herculean collation of >12K megafauna tracks, >100 species, reveals 75% overlap of critical habitats with shipping, fishing, pollution or warming. Protection targets not enough to safeguard megafauna. New paper in @science.org, led by @anammsequeira.bsky.social 👇 📸silvana-palacios,daniel-torobekov
NEW in @science.org Global tracking #MarineMegafauna shows <8% of areas used overlap w/ existing MPAs, while >75% of important areas overlapped by threats like #fishing #shipping & ocean warming - 30x30 goal will be insufficient for their conservation www.megamove.org @thembauk.bsky.social
Global tracking of marine megafauna space use reveals how to achieve conservation targets
The recent Kunming-Montreal Global Biodiversity Framework (GBF) sets ambitious goals but no clear pathway for how zero loss of important biodiversity areas and halting human-induced extinction of thre...
science.org
1/3 www.swansea.ac.uk/postgraduate... PhD studentship! Comparative Analysis and Modelling of Collective Behaviour in Natural and Artificial Systems. **this scholarship for UK residents only, as defined by UKCISA regulations** Details below! Please RT (AI-generated image)
New study in @science.org Science Advances: Clownfish can shrink to survive heatwaves and social conflict! Led by Melissa Versteeg, with Chancey MacDonald, Morgan Bennett-Smith, Pete Buston @newcastleuni.bsky.social @sciencesncl.bsky.social @bostonu.bsky.social www.science.org/doi/10.1126/...
Individual clown anemonefish shrink to survive heat stress and social conflict
Clown anemonefish survive heatwaves by shrinking together with their breeding partner.
science.org
🦈 New paper in Ecology & Evolution 📑 via our Physioshark research (ongoing since 2013 in French Polynesia🌺)! Fisheries catch data can be used to unravel elasmobranch aggregation dynamics, social structures, & group behaviours. Case study: newborn blacktip reef sharks. 🔗 doi.org/10.1002/ece3...
OPEN CALL for Sharks International 2026 proposals for keynote speakers, themed sessions and panels, workshops, and side events 📢 🦈 Please submit proposals via: forms.gle/9EiKJVncMoa7... Deadline for proposals: 15th March 2025
Here we go! The first issue of Nature Reviews Biodiversity is now live🥳🎉🥂. Thank you to our authors, reviewers, and community for the support! We hope you enjoy the reading. www.nature.com/nrbd/volumes...
Meet the cookiecutter shark: 20 inches long, with the audacity to take perfect circles out of whales and submarines. Evolution didn’t give it size, so it gave it chaos. #marinelife
Still hope for coral reefs. Using 28-years of data in Seychelles, we find reefs recovering 4-5 years faster from the 2016 bleaching event, than they did after 1998. Also, a reef that had regime-shifted to macroalgae for over 15 years, is recovering to coral. onlinelibrary.wiley.com/doi/10.1111/...
Increased resilience and a regime shift reversal through repeat mass coral bleaching
Assessing coral reefs across the inner Seychelles islands, using a 28-year dataset, we document faster coral recovery from the 2016 than the 1998 marine heatwave events. Further, a reef that had regi....
onlinelibrary.wiley.com
Ecological erosion and expanding extinction risk of sharks and rays 🦑🌎🐟🧪🦈 www.science.org/doi/10.1126/...
Ecological erosion and expanding extinction risk of sharks and rays
The true state of ocean biodiversity is difficult to assess, and there are few global indicators to track the primary threat of overfishing. We calculated a 50-year Red List Index of extinction risk a...
science.org
Hey #FishTrackers! This is the account of the 7th International Conference on Fish Telemetry that will be hosted by the @glatos-fish.bsky.social in Traverse City, Michigan in USA in June 8-13, 2025. Follow for updates!
7th International Conference on Fish Telemetry@icft2025.bsky.social · 2y agoAbstract submission is now live for the 7th International Conference on Fish Telemetry. For all details regarding the conference, please check out the website at event.fourwaves.com/7thicft/pages
New #sharkscience Great to see new information about smalltooth sawfish in Cuba out today. Evidence that a local population may still exist, but numbers are likely low and action is required (and suggested in the paper). www.int-res.com/abstracts/es...
Presence of the smalltooth sawfish in the Cuban Archipelago
int-res.com
First post on #Bluesky, thought I'd highlight some of our research this year with @netlab.bsky.social. Acoustic telemetry can be used to answer a whole variety of questions including; Residency in reef #sharks - doi.org/10.1038/s420...
Environmental stress reduces shark residency to coral reefs - Communications Biology
Environmental stress on coral reefs is increasing. Authors show a stress-related reduction in residency of grey reef sharks on the remote reefs of the Chagos Archipelago, promoting more diffuse space ...
doi.org
Beautifully described and illustrated research journey by the fantastic @ruchakarkarey.bsky.social discovering the square tailed grouper aggregation in the Lakshadweep. Let’s not overlook the powerful link of these natural occurrences with human communities. #RCUK2024
🦈 ‼️New paper‼️ 🦈 We used ERGMs to analyze movement networks in bull sharks in Reunion Island. Intra- & interspecific factors often had stronger effects on movements than environmental variables. #OpenAccess Paper: 👇 onlinelibrary.wiley.com/doi/10.1002/... #MARBEC @umontpellier.bsky.social
Really nice looking postion open here at SLU Sweden: Professor (fully tenured) in conservation ecology with focus on biodiversity linked to forest management & green infrastructure. It is also at our Alnarp campus which is...well...rather nice & even has a castle! 🧪🌎 www.slu.se/en/about-slu...
Applying acoustic telemetry, vessel tracking and fisher knowledge to investigate and manage fisher-shark conflict at Lord Howe Island, Australia | Marine Biology https://buff.ly/3NZEGJq
Applying acoustic telemetry, vessel tracking and fisher knowledge to investigate and manage fisher-shark conflict at Lord Howe Island, Australia - Marine Biology
Fisher-shark conflict is occurring at Lord Howe Island, Australia due to high levels of Galapagos shark (Carcharhinus galapagensis) depredation (where sharks consume hooked fish) and bycatch.…
buff.ly
📢 New Paper Alert 📢 🔬 Distinct management units for the Critically Endangered angelshark (Squatina squatina) revealed in the Canary Islands 🌊🦈
Want to track animals in urban landscapes? Read about our new low-cost Bluetooth low-energy beacons that work over the network of mobile phones. Get in touch if you want to try some out or collaborate on projects! besjournals.onlinelibrary.wiley.com/doi/10.1111/...
Low‐cost animal tracking using Bluetooth low energy beacons on a crowd‐sourced network
Animal tracking has opened the door to address many fundamental questions in ecology and conservation. Whilst historically animals have been tracked as a means to understand their large-scale move...
besjournals.onlinelibrary.wiley.com
