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Stelios Katsanevakis

Stelios Katsanevakis

@skatsanevakis.bsky.social

4.9K followers 3.3K following 250 posts

Professor of Marine Ecology @University of the Aegean. Focus: marine conservation, biological invasions, marine biodiversity, and ecological monitoring. #GuardIAS #MarinePlan #GES4SEAS #NemoTools #BioBoost+ #CamBioMed #INSPIRE #MarineEcology #BioInvasions .. more

Environmental science 67%

Geography 18%

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Posts Replies Media Videos

Reposted by Julie L. Lockwood

Stelios Katsanevakis @skatsanevakis.bsky.social · 2d

Just published: a cross-taxon synthesis of how #non-native species spread: from dispersal and #invasion fronts to Allee effects, human pathways, and predictive models. Understanding spread is key to management & policy.

👉 onlinelibrary.wiley.com/doi/10.1002/...

#bioinvasions #InvasiveSpecies 🧪🌍🌐

Reposted by Stelios Katsanevakis

Bioboost+ @bioboostplus.bsky.social · 3d

Deployed ✅ Our partners from University of the Aegean reef station is live: a Raspberry Pi camera/computing system + solar buoy sending reef images continuously. Built on a small budget to make monitoring more affordable—now we’re testing real-world durability + uptime.
#MarineScience #Bioboostplus

Reposted by Stelios Katsanevakis

GuardIAS @guardias.bsky.social · 4d

Season's Greetings from GuardIAS!

Reposted by Stelios Katsanevakis, Michel Tsamados

Zack Labe @zacklabe.com · 6d

A few days before Christmas and near record high temperatures are occurring around the North Pole in the #Arctic 🎅🥵

Download at zacklabe.com/arctic-tempe...

Line graph time series of daily Arctic temperatures north of 80°N latitude for every year from 1958 through 2025. There is a long-term warming trend for every day of the year and a clear seasonal cycle. 2025 is currently much warmer than average.

Reposted by Stelios Katsanevakis

Infopoint #Klimawandel #Artensterben @infopointa.bsky.social · 6d

"We project a global temperature record of +1.7°C in 2027, which will provide further confirmation of the recent global warming acceleration."

Global Temperature in 2025, 2026, 2027
Hansen et al 2025
mailchi.mp/caa/global-t...

Reposted by Stelios Katsanevakis

GuardIAS @guardias.bsky.social · 6d

Special Session at #ECSA61 📣
Guarding #marine & #estuarine waters from biological invasions
We invite talks on #prevention, #monitoring ( #eDNA, #AI, #RemoteSensing), #management, #climate – #IAS links & policy solutions.
Abstract submission opens in January
#InvasiveSpecies #bioinvasions

Reposted by Stelios Katsanevakis

GES4SEAS MOOCs @ges4seas-mooc.fediscience.org.ap.brid.gy · 7d

Numerous tools assist #ebm planning and evaluation, yet selecting the correct one remains difficult. To help with this, the #ges4seas project tested and adapted specific instruments at learning sites, ultimately combining these tools into the #tikta toolbox. #mooc

Reposted by Ángel Borja, Stelios Katsanevakis

GES4SEAS MOOCs @ges4seas-mooc.fediscience.org.ap.brid.gy · 9d

For #ebm, a single tool may be insufficient. As with a Rubik’s Cube, the #ges4seas #oceancube requires strategies for each side; the different tools available can inform various strategies. They might be highly effective for one side but fail once you try […]

[Original post on fediscience.org]

Reposted by Stelios Katsanevakis

Bioboost+ @bioboostplus.bsky.social · 10d

Divers in action for BioBoost+: collecting samples + standardised seafloor images with survey frames to train/validate #AI tools for marine biodiversity monitoring.

📷 Credit: Guy Raanan @rilovlab.bsky.social @iolr-il.bsky.social

#RilovLab #BioBoostPlus #MarineScience #UnderwaterImaging

Stelios Katsanevakis @skatsanevakis.bsky.social · 10d

The best science images of the year - excellent selection from #Nature.

www.nature.com/immersive/d4...

The best science images of 2025 — Nature’s picks

The Sun’s fiery surface, a tattooed tardigrade, rare red lightning and more.

Reposted by Stelios Katsanevakis

GuardIAS @guardias.bsky.social · 11d

Wakame (Undaria pinnatifida) is on the IUCN's list of the 100 "world's worst" invasive species! It's a major threat, known for displacing native seaweeds & clogging coastal infrastructure.

The #GuardIAS project is modelling its spread via offshore wind farms.

#InvasiveSpecies #BioInvasions #IAS

Wakame (Undaria pinnatifida)

Reposted by Stelios Katsanevakis, Jussi T. Eronen

Zeke Hausfather @hausfath.bsky.social · 12d

Actual climate scientist here. 2.5C is on the optimistic end of the literature on current policy outcomes, which spans the range from 2.3C to 3C. I wrote a review of the literature on the subject earlier this year: journals.sagepub.com/doi/10.1177/...

Reposted by Sonia I. Seneviratne, Stelios Katsanevakis, Nicolai von Ondarza

Copernicus ECMWF @copernicusecmwf.bsky.social · 15d

🌡️ November 2025 was the third-warmest November on record globally, keeping 2025 on track to be the second- or third-warmest year recorded. The global three-year average temperature for 2023–2025 will likely exceed 1.5°C above pre-industrial levels for the first time.

Read more ⬇️

Reposted by Stelios Katsanevakis

GuardIAS @guardias.bsky.social · 16d

The red king crab can have a leg span of nearly 2 meters! It's a major threat, known for devastating seafloor ecosystems & spreading disease to native fish.

#GuardIAS is working with groups in Norway to create a management plan.

#InvasiveSpecies #BioInvasions #IAS

Image: NOAA Fisheries

Reposted by Stelios Katsanevakis

GuardIAS @guardias.bsky.social · 17d

Our free MOOC on Invasive Alien Species Prevention is live!

What you'll learn:
✅ Bioinvasion impacts
✅ Introduction pathways
✅ Management strategies

Catch up before Course 2 drops in early 2026.

🔗 Start here: www.ecmunipv.it/login/index....

#InvasiveSpecies #BioInvasions #IAS

Reposted by Stelios Katsanevakis

GuardIAS @guardias.bsky.social · 17d

The striped eel catfish (Plotosus lineatus) was the first marine species regulated by the EU for being invasive!

It's known for being venomous & outcompeting native fish. The #GuardIAS project is setting up an early warning system to stop its spread.

#InvasiveSpecies #BioInvasions #IAS

Reposted by Stelios Katsanevakis

Bioboost+ @bioboostplus.bsky.social · 18d

🦞 A lobster encounter in Lake Grevelingen!
While surveying benthic biodiversity for #BioBoostPlus WP2, @NIOZ_Netherlands researchers caught this Homarus gammarus on ROV.
Restoration work meets AI + imaging.

🎥 Credit: Zhiyuan Zhao
@niozsearesearch.bsky.social

#MarineScience #ROV #Biodiversity

Stelios Katsanevakis @skatsanevakis.bsky.social · 18d

Just published: a key nesting site of the black seabream identified in the #Aegean Sea - urgently needing protection.
link.springer.com/article/10.1...
🌍🌐🧪🐟
#fisheries #Mediterranean #MarineEcology #conservation

Jennifer C.A. Pistevos, Ph.D. @jennieacp.bsky.social · 18d

🐟🪸We’ve just published the first documented nesting aggregation of black seabream (Spondyliosoma cantharus) in the Mediterranean Sea.

Author link (view-only): rdcu.be/eTtif

@skatsanevakis.bsky.social @thanasisnikolaou.bsky.social
#NEMOTOOLS #marinebiology #ROV #spawninggrounds #conservation

Reposted by Stelios Katsanevakis

GES4SEAS MOOCs @ges4seas-mooc.fediscience.org.ap.brid.gy · 18d

So far in this #mooc we’ have explored some core principles of #ebm (Ecosystem-Based Management) 🌊but here’s something we haven’t yet talked about:

👉 EBM isn’t a one-off process. It’s cyclical and constantly evolving.
How does this make the ends meet? Stay tuned to find out…

Reposted by Stelios Katsanevakis

Jennifer C.A. Pistevos, Ph.D. @jennieacp.bsky.social · 18d

This is the moment we realised what we were looking at.

During @nemo-tools.bsky.social ROV surveys to map gorgonian & coralligenous habitats, the seafloor suddenly turned into a landscape of circular nests, each guarded by a male.

We weren’t searching for spawning grounds – we dropped onto one.

Reposted by Stelios Katsanevakis

Jennifer C.A. Pistevos, Ph.D. @jennieacp.bsky.social · 18d

🐟🪸We’ve just published the first documented nesting aggregation of black seabream (Spondyliosoma cantharus) in the Mediterranean Sea.

Author link (view-only): rdcu.be/eTtif

@skatsanevakis.bsky.social @thanasisnikolaou.bsky.social
#NEMOTOOLS #marinebiology #ROV #spawninggrounds #conservation

Reposted by Stelios Katsanevakis

SynapsidGirl @synapsidgirl.bsky.social · 19d

I've decided to make a series of paintings of conservation success stories, starting with this here żubr/ wisent/ European bison.
They were almost driven to extinction in the early XX century, and the current population is descended from about 17 animals, thanks to the efforts of prof. Jan Sztolcman

Stelios Katsanevakis @skatsanevakis.bsky.social · 19d

The University of the Aegean invites applications for a 2-year Researcher (MSc, #MarineEcology) post under the LIFE-PINNACARE project. Focus: Pinna nobilis #conservation in Greece + field work.
📅 Apply by 6 Jan 2026.
📧 More info: euraxess.ec.europa.eu/jobs/393307
— dive in!
#Conservation #job 🌍🌐

Stelios Katsanevakis @skatsanevakis.bsky.social · 20d

Thanks!

Stelios Katsanevakis @skatsanevakis.bsky.social · 21d

Hi Blair. Could you please add me? I’m a marine ecologist working on automatic species identification from underwater footage using AI.

Reposted by Stelios Katsanevakis

Prof. Eliot Jacobson @climatecasino.net · 23d

One last update to the daily-color stripes for 2025, with data through the end of November, 2025.

The last day of November in this graphic recorded 1.55°C above the pre-industrial baseline.

Reposted by Stelios Katsanevakis

Dr. Melanie Bergmann @melaniebergma18.bsky.social · 23d

🆕'Breaking the Plastic Wave' report is out, concluding that without ambituous systemic measures #plastic pollution will double until 2040 equivalent to dumping nearly a 🛻 garbage truck worth of plastic waste every second since, growing twice as fast as waste management.
www.pew.org/en/research-...

Stelios Katsanevakis @skatsanevakis.bsky.social · 23d

🔊🌊 Great moments with the Scouts this week! We introduced them to our ~50 € hydrophone, handed out units, and dove into citizen-science together. Nothing better than seeing young explorers record their first marine soundscapes. 🐬✨ #OceanScience #CitizenScience 🧪

Stelios Katsanevakis @skatsanevakis.bsky.social · 23d

🔊🌊 Just out in Sensors: a low-cost (~50 €) #hydrophone toolkit for robust underwater #AcousticMonitoring. Built for researchers, educators and #CitizenScientists eager to explore marine #soundscapes. Hear the ocean differently. 🐳🛥️🐬📡 www.mdpi.com/1424-8220/25...
#MarineEcology 🌍🌐🧪

Reposted by Stelios Katsanevakis

Bioboost+ @bioboostplus.bsky.social · 24d

🎥 Here’s ZooImage in action: segmenting and measuring zooplankton from scanned samples — part of a 40+ year time series from Norwegian fjords.

@ribas-deulofeu.bsky.social visited @azti.bsky.social to help build AI tools for faster biodiversity monitoring.

#BioBoostPlus #AI4Oceans #Zooplankton