Jan Geert Hiddink

Jan Geert Hiddink

@jangeerthiddink.bsky.social

Prof in marine ecology @sosbangor.bsky.social Ecosystem effects of fishing. I like sea kayaking in my #Klepper, wild camping, cycle touring, hanging out in my woodland. https://scholar.google.co.uk/citations?user=XmYbaRYAAAAJ&hl=en&inst=20741569918851904

10,490 Followers 1,823 Following 304 Posts Joined Nov 2023
17 hours ago
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we find that evolution is good for fish fitness, fish regain some of their lost fitness if they adapt to warmer conditions. BUT this adaptation reduces fisheries yields, worsening the impacts of warming.

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17 hours ago
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Evolutionary adaptation to global change reduces sustainable fisheries yields Global warming is altering the fisheries that underpin food security, but projections of these impacts generally exclude evolutionary processes. We describe a model that forecasts how fish will adapt ...

Fish will have to adapt to a warming world, what will that adaptation do to fisheries yields? We answer that question today in Science. I’ll summarise our findings very briefly in this thread
www.science.org/doi/epdf/10....

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15 hours ago
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I'm proud that my woodland in Pembrokeshire is accessible to everyone by two right-of-ways www.theguardian.com/environment/...

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1 day ago
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Closing heavily fished but naturally poor areas risk worsening overall ecosystem state through displacement of fishing to more sensitive areas. academic.oup.com/icesjms/arti...

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1 day ago

The article highlights Dogger Bank's value for birds and mammals, which are unlikely to be much affected by bottom trawling, but never mentions benthic fauna. In my experience sampling there, much of the benthos is naturally poor due to high wave disturbance in these shallow waters.

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2 days ago
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A windy night was followed by a nice dawn and a good day of sampling. Unfortunately there is much more wind to come tonight. #DY206 #SeaSTORE

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4 days ago

Two paid Marine Futures Internships in Bangor with the @northwaleswt.bsky.social
www.northwaleswildlifetrust.org.uk/jobs/marine-...

For candidates who are passionate and enthusiastic about the seas, are willing to learn, organised, self-motivated, and can work well in a team.

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4 days ago

Discussing this paper: www.cell.com/cell-reports...

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4 days ago

Very excited to have been given this award for my PhD work on setting thresholds for good status in marine ecosystem management. Thank you to The Drapers, and a special thank you to Jan, my lead supervisor, who's guidance, encouragement, and support has been invaluable throughout this process.

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4 days ago
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International women's day on the RRS Discovery with our great team of scientist and crew. #DY206 #SeaSTORE

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1 week ago
[We see a close up of a young white male, tanned, white teeth, coiffed hair clearly an influencer on social media. It is an image such as you see when social media posts are shown on the news. In the corner of the screen is named a location: DUBAI. He is staring slightly off-camera for several silent panels of the comic strip. His eyes move slightly. He is having a thought.]

From off-screen a newsreader’s commentary comes:

NEWSREADER:

Extraordinary images here 

of an expat in Dubai 

[The influencer’s eybrows raise slightly]

…Having their first ever geopolitical thought.

[CUT TO a BBC news scene. The BBC newsreader CLIVE MYRIE is talking to an interviewee next to the screen showing the social media influencer’s face. The interviewee’s name is David Jones]. 

CLIVE MYRIE:

To explain the significance of this moment we’re joined by David Jones, our Expat Thoughts correspondent

DAVID JONES:

Clive, this is momentous

It was caught on film at the end of an Instagram post titled: ‘Dubai Is Brilliant’.

[Pointing at the screen, the influencer’s expression still the same]

You can clearly see in the eyebrows here, the dawning realisation that there *might* be something in the world beyond his dickhead self.

It marks a *huge* departure from all the Dubai Expat’s previous thoughts.

CLIVE MYRIE:

Which are…?

DAVID JONES:

You've Got To Get Yourself Out Here Mate, Everything Is So Clean, I Don't Have To Pay Taxes, 
I Am Incurious As To Why I Do Not Have To Pay Taxes, and Spa.

CLIVE MYRIE:

And might we see an expansion of these new Thoughts in coming days?

DAVID JONES:

I think we can expect to see:

“I Deserve To Be Airlifted By A Country I Pay No Tax To”

CLIVE MYRIE:

Mmm. 

[Ends]
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5 days ago
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SPI image of a Virgularia seapen & Megacorer sample

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5 days ago
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Sampling on the more sandy sediment SW of the Isle of Man is off to a good start. We managed to get good cores despite the coarser sediment. And we spotted lots of seapens.

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1 week ago

Success! Those two turbidity spike are the plumes behind the two trawl doors.

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1 week ago

At least you get enough formatting options. Triple bold!

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1 week ago
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Our second trawling experiment is in progress in the Western Irish Sea Mud Belt. We're quantifying the size of the plume and sampling the suspended sediment. Preliminary results from the experiment in the Clyde are looking promising! #DY206 #SeaSTORE

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1 week ago
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Congrats to @lornamckellar.bsky.social on the award of the Drapers' company medal for an outstanding research student! It has been a pleasure working with Lorna and she's made a lot of progress in defining 'good environmental state'.

www.bangor.ac.uk/news/2026-03...

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1 week ago
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Most Reform members believe non-white UK citizens born abroad should be forced or encouraged to leave, poll finds Nigel Farage’s recent efforts to woo centre-ground voters may cause tension in party’s right flank, says Hope Not Hate

Research and polling reveals (unsupisingly) that a majority of Reform members are openly racist.
Yet the media gives Reform a free pass instead of condemning them as they should.
www.theguardian.com/politics/202...

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1 week ago
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We picked our lander up again today, seems the weight sank quite some way into the mud. #DY206 #SeaSTORE

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1 week ago
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We had to stop work on the RRS Discovery for a few hours in the night when the wind got to 40 knots. Calm again now. #DY206 #SeaSTORE

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1 week ago
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Check out this film in @pontiobangor.bsky.social. The film takes audiences into the depths of the Pacific Ocean, following scientists exploring one of the least understood ecosystems on Earth.

Friday 20 March at 5pm
www.wowfilmfestival.com/howdeepisyou...

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1 week ago
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We have been doing a 24hr intensive timeseries of profiles of turbulence using the VMP, with a CTD every 6h, to be able to quantify any movement of CO2 from the seabed to the surface. It's been a long day for the people on deck...
#SeaSTORE #DY206

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2 weeks ago
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Seabed Carbon Risks: What Our Evidence Shows A new technical briefing reviews the latest evidence on how trawling, other human activities and climate change affect seabed carbon.

A new review brings together over 30 UK & international scientists to assess the latest evidence on how human activities, including bottom trawling and climate pressures affect seabed organic carbon stores.

Read the blog to see what the evidence shows👇🌊

marinescience.blog.gov.uk/2026/02/25/s...

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2 weeks ago
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Excited to share some work on spatial variability in localized upwelling regimes on coral reefs at #OSM26 today!

@sosbangor.bsky.social @eco-oce-lab.bsky.social

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1 week ago
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We've been coring through the night on the gloopy mud to quantify carbon, nutrients and macrofauna over a gradient of trawling intensity #SeaSTORE #DY206

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2 weeks ago

Even if it doesn't harm wildlife, producing the sodium hydroxide is most likely generating way more than 10 tons of CO2.

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2 weeks ago
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Today we quantified the magnitude of the sediment plume behind a trawler in the Clyde #SeaSTORE, in collaboration with a fishing vessel. The difference in size with the RRS Discovery was quite striking.

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2 weeks ago
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The first samples are on board! #SeaSTORE #DY206. Now continuing with the multi-corer to do detailed measurements and incubations to study carbon biogeochemistry.

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3 weeks ago
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We're working in 4 areas in the Irish Sea with different sediments and stratification.

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3 weeks ago
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Last day @sosbangor.bsky.social before our 23 day cruise on the RRS Discovery for the SeaSTORE project. We'll be studying the impact of bottom trawling on seabed carbon stocks. We'll study the chronic and immediate impacts.

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