David Jacoby

@netlab.bsky.social

270 followers 240 following 7 posts

Shark fanatic, with interests in movement ecology, network analysis and applied conservation.

Videos

History 35%

Environmental science 34%

Posts Replies Media Videos

David Jacoby @netlab.bsky.social · Jul 17

#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

@sharkconservationfund @canbiocanarias @saveourseasfoundation @oceantrackingnetwork @wwfnederland @nercscience @deutsche_elasmobrancier_ges

Reposted by David Jacoby

Dr Anna Sturrock @otolithgirl.bsky.social · Jul 9

#FSBI2025 Spawning Run Selfies!

Reposted by David Jacoby

Nicole 🪲 @fossilforager.bsky.social · Jul 8

A lil tribute to the kelp forests along the California coast 🌊✨

An illustration featuring a leopard shark, bat ray, and the California state marine fish: the garibaldi. They are swimming next to giant kelp and illustrated on a vibrant blue background.

David Jacoby @netlab.bsky.social · Jul 8

Great talk by @mjw-marine.bsky.social on the predictability of European eel aggregations for improved #trap&transport management. @thefsbi.bsky.social

Reposted by David Jacoby

Yannis Papastamatiou @dr-yannis.bsky.social · Jun 27

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

David Jacoby @netlab.bsky.social · Jun 26

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 · Jun 26

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.

Reposted by Colin A. Simpfendorfer, David Jacoby

IUCN SSC Shark Specialist Group @iucnshark.bsky.social · Jun 26

Reposted by David Jacoby

Sal Keith (she/her) @salkeith.bsky.social · Jun 11

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

News | Portal

The Portal is the home of news, events, timetables and study information for all students at Lancaster University. It also features useful services and tools.

portal.lancaster.ac.uk

Reposted by David Jacoby

Oceana UK @oceanauk.bsky.social · Jun 10

🎉 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

Reposted by David Jacoby

British Antarctic Survey 🐧 @bas.ac.uk · Jun 10

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

David Jacoby @netlab.bsky.social · Jun 6

www.science.org/doi/10.1126/...

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...

www.science.org

Reposted by David Sims

David Jacoby @netlab.bsky.social · Jun 6

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

Reposted by David Jacoby

Prof David Sims @thesimslab.bsky.social · Jun 5

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

science.org

Reposted by David Jacoby

Andrew King @shoalgroup.bsky.social · Jun 3

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)

AI generated image showing flock of sheep, shoal of fish, flock of birds and swarm robots

Reposted by David Jacoby

Theresa Rueger @theresarueger.bsky.social · May 22

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.

www.science.org

Reposted by David Jacoby

Professor Jodie Rummer @physiologyfish.bsky.social · Mar 31

🦈 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...

Reposted by Tatsuya Amano, David Jacoby, Enrico Di Minin , and 1 more Tatsuya Amano, David Jacoby, Enrico Di Minin, Simon Harold

Nature Reviews Biodiversity @natrevbiodiv.nature.com · Jan 15

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...

Two birds of different species looking at each other from different sides of a river

Reposted by David Jacoby

Andrew Chin @spinnershark7.bsky.social · Jan 15

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

Poster advertising the Sharks International conference to be held in Sri Lanka in 2026

Reposted by David Jacoby

Dr Craig R McClain @drcraigmc.bsky.social · Jan 7

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

David Jacoby @netlab.bsky.social · Jan 2

Tragic news. Very sorry to hear this. Only ever interacted with Jeff over email but he always came across as a thoroughly nice guy. A real loss to the community.

Reposted by Callum M. Roberts, Christina C. Hicks, Gareth J. Williams , and 1 more Callum M. Roberts, Christina C. Hicks, Gareth J. Williams, David Jacoby

Nick Graham @nickajgraham.bsky.social · Jan 2

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

Reposted by David Jacoby, Daniel C. Dunn

SharkScience @sharkscience.bsky.social · Dec 7

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...

www.science.org

Reposted by David Jacoby

7th International Conference on Fish Telemetry @icft2025.bsky.social · Dec 5

Abstract 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

International Conference on Fish Telemetry (7th ICFT)

Fourwaves - International Conference on Fish Telemetry (7th ICFT)

event.fourwaves.com

Reposted by David Jacoby

Colin Simpfendorfer @sharkcolin.bsky.social · Dec 4

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

www.int-res.com

Reposted by David Jacoby

Mike Williamson @mjw-marine.bsky.social · Dec 2

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

Reposted by Christina C. Hicks

David Jacoby @netlab.bsky.social · Nov 30

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

Reposted by David Jacoby, Andrew Taylor

Johann Mourier @sharkmourier.bsky.social · Nov 28

🦈 ‼️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

Reposted by Helmut Hillebrand, David Jacoby, Andreas C. Bryhn , and 1 more Helmut Hillebrand, David Jacoby, Andreas C. Bryhn, Jaume A. Badia‐Boher

Lachlan Fetterplace @fiskeforbrains.bsky.social · Nov 22

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...

A green lawn stretches towards an old castl, three wings of the castle can be seen with multiple arched entries and at leasted 4 levels of whindows. Two large sections of the castle walls are covered with green vine with leaves or red vine with red or orange leaves.

This is the opposite side of the castle in the previous picture. Here three distinct 'towers' cant be see with two sections of building between them. This side of the case appears to only have one entrance and the sections between the towers are covered in thick green foilage with the exception of the 12 windows in each section spread over three floors.

Reposted by David Jacoby

David Shiffman, Ph.D. 🦈 @whysharksmatter.bsky.social · Nov 9

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

Reposted by David Jacoby

Eva Meyers @evameyers.bsky.social · Nov 7

📢 New Paper Alert 📢

🔬 Distinct management units for the Critically Endangered angelshark (Squatina squatina) revealed in the Canary Islands 🌊🦈

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