iiinova — where your digital self keeps evolving

Reposted by Patricia Charvet

Nicolas Mouquet @nmouquet.bsky.social · 09/03/2026

‪ 🌳 Do you want to contribute to research on how humans perceive forests? Take this quick, anonymous 10-min survey 🌲 👉 www.biodiful.org#/forest This will help us explore how people experience forest biodiversity! Please share on 🦋 & tag @biodiful.bsky.social to reach more participants 🙏💚 🌐🌍🦤🦑🪴🍁🧪

40552633

Reposted by Patricia Charvet

Marcela M. Alvarenga @marcelaalvarenga.bsky.social · 23/04/2026

Our work was featured on IUCN SSN Shark News, highlighting our review of rapid DNA/eDNA tools for Chondrichthyes conservation worldwide, and our free eBook to help practitioners, students, and researchers understand and apply these tools @iucnshark.bsky.social 🦈 Read it here: bit.ly/SharkNews13

784f07501.flowpaper.com

IUCN SSC SSG | Shark News | Issue 13 | April 2026

085

Reposted by Patricia Charvet

Nick Dulvy @nickdulvy.bsky.social · 22/01/2026

What success looks like (5–10 years) • Fishing mortality aligned with species’ life histories • Species-level reporting becomes the norm • Management completeness rises above critical thresholds • Shark & ray populations stabilize and recover Read the paper here: rdcu.be/eZ9n9

rdcu.be

Bending back the curve of shark and ray biodiversity loss

Nature Reviews Biodiversity - Global shark and ray populations have declined sharply, driven by expanding fisheries and inequitable gaps in catch, trade and distribution data. This Review assesses...

02710

Reposted by Patricia Charvet

Nick Dulvy @nickdulvy.bsky.social · 22/01/2026

• 40% of global shark & ray catch comes from low- and middle-income countries • Small-scale fisheries underpin livelihoods and food security • Under-resourced management = high biodiversity & social risk • Reduced fishing mortality reduces extinction & social risk, improving ecosystem functions.

1197

Reposted by Patricia Charvet

Nick Dulvy @nickdulvy.bsky.social · 22/01/2026

Where investment has the highest leverage to bend back biodiversity loss? Funding that strengthens: • Species-level catch & trade data • Compliance and enforcement • Capacity in national agencies • Monitoring in small-scale fisheries → Directly reduces fishing mortality

Bending back the biodiversity loss curve of sharks and rays. The loss of sharks and rays to date has involved serial depletion of the largest, most evolutionary and functionally distinct species, and the increasing prevalence of smaller-bodied species that have benefited from release from predation.

1106

Reposted by Patricia Charvet

Nick Dulvy @nickdulvy.bsky.social · 22/01/2026

We don’t need new frameworks — we need to connect and implement the ones we have. Fisheries management, trade rules, compliance, and demand must align to reduce fishing mortality at scale. Implementation is the bottleneck. @hollieboothie.bsky.social @sharkcolin.bsky.social

A theory of shark and ray conservation change. Structural drivers
of shark and ray decline can be addressed through three types of measures that target trade and demand management, fisheries management, and rehabilitation.

1106

Reposted by Patricia Charvet

Nick Dulvy @nickdulvy.bsky.social · 22/01/2026

Decline is not inevitable. Where fishing mortality has been reduced — through catch limits, retention bans, or spatial protection — shark and ray populations are stabilizing or recovering. Recoveries documented for wide-ranging and restricted-range species @charlie-huveneers.bsky.social

Green List Status Assessment of the Banded Wobbegong (Orectolobus halei) The recovered (blue) status compared to what the past status might have been without conservation (Conservation Legacy, green) and future status unless management continues (Conservation Dependency, orange).

23115

Reposted by Patricia Charvet

Nick Dulvy @nickdulvy.bsky.social · 22/01/2026

Gaps in catch limits, compliance, and enforcement mean fishing mortality stays high even where policies exist. Where management is complete, risk is lower and recovery is possible. @hollieboothie.bsky.social @sharkcolin.bsky.social Read the paper here: rdcu.be/eZ9n9

Progress and priorities in shark and ray fisheries management. The risk to species owing to incomplete management (‘M-Risk’, part a) can be described by Compliance, one of 19 attributes across four classes for requiem sharks and guitarfishes

196

Reposted by Patricia Charvet

Nick Dulvy @nickdulvy.bsky.social · 22/01/2026

Overfishing is compounded by under-management Fishing mortality is the primary driver & management completeness (for guitarfishes & requiem sharks) stands at ~49% globally. @sammsherman27.bsky.social @vanderwright.bsky.social Read the paper here: rdcu.be/eZ9n9

1108

Reposted by Patricia Charvet

Nick Dulvy @nickdulvy.bsky.social · 22/01/2026

What’s driving the decline? The crisis isn’t just fishing — it’s invisible fishing. Much shark & ray catch is under-reported, aggregated, or mislabeled, masking real mortality & delaying management. What we don’t measure, we don’t manage. @cgmull.bsky.social @nathanpacoureau.bsky.social

Taxonomic differentiation of catch. FAO (United Nations Food and Agricultural Organization) on the percentage of catch reported to the species level worldwide.

11510

Reposted by Patricia Charvet

Nick Dulvy @nickdulvy.bsky.social · 22/01/2026

Sharks & rays are sentinels of ocean health. - Global abundance has been fished down by 65%, - Now 37.5% of species are threatened, - The current extinction rate is 25–250 times greater than the background fossil record, with greatest losses in tropical coastal seas. #BiodiversityTargets

Extinction risk and the spatial patterning of shark, ray and chimaera richness, including hotspots of coastal and deepwater richness, for wide-ranging and endemic species.

11911

Reposted by Patricia Charvet

Nick Dulvy @nickdulvy.bsky.social · 22/01/2026

New paper out today in @natrevbiodiv.nature.com by the #GlobalSharkTrends team: Bending back the curve of shark & ray biodiversity loss; Read the paper here: rdcu.be/eZ9n9 @sfu.ca @sfubiosciences.bsky.social @earth2ocean.bsky.social

29848

Reposted by Patricia Charvet

Marcela M. Alvarenga @marcelaalvarenga.bsky.social · 19/09/2025

🚨 New paper in Molecular Ecology Resources! We compiled the most applied rapid DNA/eDNA-based ID tools & primers for #sharks and #rays 🦈 A practical guide to help scientists, managers & enforcement choose the right method for conservation action. Read here: doi.org/10.1111/1755... #OpenScience #eDNA

143

Reposted by Patricia Charvet

Marcela M. Alvarenga @marcelaalvarenga.bsky.social · 19/09/2025

✨ In collaboration with an incredible team of Brazilian researchers: @ingridbunholi.bsky.social @patriciacharvet.bsky.social @rodrigodomingues.bsky.social @manirfeitosa.bsky.social + colleagues

042

Reposted by Patricia Charvet

Jonathan Ready @jonready.bsky.social · 27/02/2025

Local genetic reference sequences can be essential for species specific studies. Applying what worked for a species elsewhere in the world (in this case largetooth sawfish, Pristis pristis) may not work where you are!!! www.biorxiv.org/content/10.1...

biorxiv.org

Geographical variation in mitogenomes of the largetooth sawfish Pristis pristis: challenges and perspectives for conservation efforts

Sawfishes (Pristidae) have been severely impacted by coastal development and unregulated fisheries and are considered Critically Endangered by the IUCN Red List. Environmental DNA (eDNA) analyses have...

163

Reposted by Patricia Charvet

Colin Simpfendorfer @sharkcolin.bsky.social · 06/12/2024

And here is the second one. Status change by the three main ocean habitats of sharks, rays and chimaeras through time. @nickdulvy.bsky.social @nathanpacoureau.bsky.social @iucnshark.bsky.social @sscmarine.bsky.social #sharkscience #shark #sharkconservation

12710

Reposted by Patricia Charvet

Colin Simpfendorfer @sharkcolin.bsky.social · 06/12/2024

Yesterday our new #globalsharktrends paper came out in @science.org @nickdulvy.bsky.social did a great thread on the paper and included some GIFs that we had made but they did not play here on @bsky.app I'm hoping this now works. Status change through time... science.org/doi/10.1126/...

24225

Reposted by Patricia Charvet

Nick Dulvy @nickdulvy.bsky.social · 06/12/2024

🧪🐬🌎🦞🦑

0104

Reposted by Patricia Charvet

Nick Dulvy @nickdulvy.bsky.social · 05/12/2024

New #GlobalSharkTrends study published in @science.org reveals #overfishing has more than halved shark & ray populations over the past 50-years causing widespread erosion of ecological function and exceptionally high extinction risk 👉Full article bit.ly/GlobalSharkTrends 🧵1/20

Scalloped hammerhead sharks (Sphyrna lewini) IUCN Critically Endangered © Masayuki Agawa_Ocean Image Bank

4188124

Reposted by Patricia Charvet

Colin Simpfendorfer @sharkcolin.bsky.social · 02/12/2024

The beast is out! @iucnshark.bsky.social has released a major new report: "The global status of sharks, rays, and chimaeras". 2100+ pages of information from over 350 authors from around the world. Available for free download: portals.iucn.org/library/node... #sharkscience

portals.iucn.org

The global status of sharks, rays, and chimaeras | IUCN Library System

24013

Reposted by Patricia Charvet

IUCN SSC Shark Specialist Group @iucnshark.bsky.social · 27/11/2024

The IUCN SSC SSG was established to respond to growing awareness and concern of the severe impact of fisheries on shark, ray, and chimaera populations globally. The SSG is recognized as the leading authority on the status of these species, using science to support actions for conservation.

13512

Reposted by Patricia Charvet

Stelios Katsanevakis @skatsanevakis.bsky.social · 02/12/2024

Up-to-date assessments of the status of sharks, rays & chimaras from the IUCN SSC Shark Specialist Group. #MarineEcology 🧪🌐🌍

02712

Reposted by Patricia Charvet

Ana Nuno @ananuno.bsky.social · 02/12/2024

This is such a fantastic resource amazingly led by Rima Jabado et al.! Happy to have played a very minor part as contributor to the chapter on São Tomé and Príncipe led by @gporrinos.bsky.social. Well done to the 353 contributors from over 110 countries! #OceanOptimism #Conservation

0117

Reposted by Patricia Charvet

IUCN SSC Shark Specialist Group @iucnshark.bsky.social · 02/12/2024

There are chapters for each major global region, and if you are a journalist writing about this report, we have experts from your region standing by to answer your questions. We also have a variety of high-quality images for journalists' use.

1125

Reposted by Patricia Charvet

IUCN SSC Shark Specialist Group @iucnshark.bsky.social · 02/12/2024

BREAKING: The IUCN Species Survival Commission Shark Specialist Group has released a new report on the global conservation status of sharks and their relatives. portals.iucn.org/library/node...

Cover of the new "global status of sharks, rays, and chimaeras" report

220099

Reposted by Patricia Charvet

Eoghan Daltun 🌍 @irishrainforest.bsky.social · 02/12/2024

Shifting baseline syndrome explains how we normalise the continual visceration of once unimaginably rich ecosystems. Rewilding – our minds, lands, and seas – is the solution. 🌏

251224425

Reposted by Patricia Charvet

Dr. Rich B @morphometrich.bsky.social · 18/11/2024

Made a Paleontology version of this a few years ago. Since we're all sharing...

0258