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Carl Sayer

@carlsayer.bsky.social

Professor at UCL, Restoration of freshwaters, ponds, lakes, rivers, meadows, plants, diatoms, fish, eels, burbot, crucians, palaeoecology, rewilding, Norfolk: https://www.ucl.ac.uk/geography/carl-sayer

1,955 Followers  |  763 Following  |  275 Posts  |  Joined: 27.11.2024  |  2.1758

Latest posts by carlsayer.bsky.social on Bluesky

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The glory of a well managed Norfolk marl pit #pond. If a little buffered from the fields & no inflow pipe ponds can be spectacularly diverse even in intensive arable. Ponds are probably the most important farm habitat @farmwildlifeuk.bsky.social

09.12.2025 18:20 β€” πŸ‘ 25    πŸ” 6    πŸ’¬ 0    πŸ“Œ 0

Simon Johnson from @freshwaterbio.bsky.social talking straight about the poor state of Norfolk's River Wensum
#wensumriverkin

08.12.2025 17:22 β€” πŸ‘ 9    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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🐝 The @biggive.bsky.social’s #ChristmasChallenge is LIVE!

🌎 This #GivingTuesday, donate once to Zero Hour and make twice the impact.

🎁 From 2-9 December, every £ you donate to help build our urgent climate and nature campaign will be DOUBLED!

πŸ’š Donate here πŸ‘‰ donate.biggive.org/campaign/a05...

02.12.2025 12:03 β€” πŸ‘ 41    πŸ” 32    πŸ’¬ 1    πŸ“Œ 2

Yes!!!!!! Surely yes!!!!!!

08.12.2025 07:13 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Yes 1 mm scale

08.12.2025 07:11 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I will defo a look at that!!!

07.12.2025 22:48 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Thanks so much :)

07.12.2025 21:08 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Could it be Silene noctiflora?

07.12.2025 20:46 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I need find out!

07.12.2025 20:17 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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A palaeoecological plant find from a Breckland ghost ice age pond core (East Harling, E. England). Puzzled over by @hayleymcmechan.bsky.social & myself. Help with ID please team!! Seems obvious but stuck. @jo-the-botanist.bsky.social @bramblebotanist.bsky.social @timholtwilson.bsky.social

07.12.2025 18:58 β€” πŸ‘ 16    πŸ” 4    πŸ’¬ 6    πŸ“Œ 1

Such a shame. What a missed opportunity with loads economic benefits missed too... :(

07.12.2025 17:53 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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A wooded multi-channel #chalkstream in a Norfolk (eastern England) military training area that has avoided tidying & dredging. Lots of fallen wood & bankside trees. Sparkling gravel patches, sands & leaf packs. Crystal clear waters fed by healthy local springs. Everything we have lost & want back

07.12.2025 17:41 β€” πŸ‘ 52    πŸ” 9    πŸ’¬ 0    πŸ“Œ 2
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What is & who are Wensum Riverkin? Meet a river in trouble & meet the team who will never stop fighting for it - part 2 #wensumriverkin

03.12.2025 19:54 β€” πŸ‘ 15    πŸ” 5    πŸ’¬ 0    πŸ“Œ 1
4 brill volunteers standing in a farm pond

4 brill volunteers standing in a farm pond

Digging Crassula helmsii out if a farm pond

Digging Crassula helmsii out if a farm pond

The invasive plant, New Zealand Pigmywort Crassula helmsii, is a big trouble maker, but can be hand-picked & dug out of ponds & eradicated. Over recent days our Julia Mumford-Smith & 4 volunteers worked hard to clear Crassula from 2 species-rich North Norfolk farm ponds. Crassula can be beaten!!!

02.12.2025 22:24 β€” πŸ‘ 22    πŸ” 4    πŸ’¬ 1    πŸ“Œ 0

Wensum Riverkin - part 1 @tonyjuniper.bsky.social @fishtwitcher.bsky.social

01.12.2025 21:37 β€” πŸ‘ 5    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

This is good news!!! #wensumriverkin

01.12.2025 14:54 β€” πŸ‘ 6    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

Please support #WensumRiverkin. Many Anglers & local people are up for fighting for Norfolk's iconic River Wensum. The Wensum is in big trouble!!! Please join us & follow.

01.12.2025 09:24 β€” πŸ‘ 8    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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For your freshwater Friday delight... we're thrilled to present a deep dive with @carlsayer.bsky.social, Prof of Limnology & Freshwater Ecology at UCL, into the fascinating world of #GhostPonds, and their potent power for ecological and palaeoecological regeneration:

www.fba.org.uk/fba-voice/gh...

28.11.2025 15:06 β€” πŸ‘ 16    πŸ” 6    πŸ’¬ 0    πŸ“Œ 0

That's how u doing it!!! :)

23.11.2025 12:30 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

If not it should be!!!

21.11.2025 20:12 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Ghost pond resurrection – the most successful ecological restoration ever known? β€” Freshwater Biological Association Carl Sayer is Professor of Limnology & Freshwater Ecology at UCL. We were delighted that Carl was able to attend the FBA ASM to deliver a keynote talk on ghost ponds. These pond resurrections are ...

Ghost pond resurrection. Is it the most successful form of ecological restoration known? www.fba.org.uk/fba-voice/gh...

21.11.2025 20:05 β€” πŸ‘ 110    πŸ” 26    πŸ’¬ 2    πŸ“Œ 2
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Jersey wildlife trust recognised for protecting agile frogs Wildlife experts say the agile frog could have "disappeared from Jersey" without the project.

Agile Frog is getting a helping hand in the Channel Islands. Brilliant project underway in Jersey. www.bbc.com/news/article...

13.11.2025 23:05 β€” πŸ‘ 11    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Much talk all the time of freshwater wetlands being great filters & cleaning water. We must remember that sending dirty water into wetlands destroys them. There is nothing more certain in science than that. Make wetlands clean!!! @ramsar.org @freshwaterbio.bsky.social

11.11.2025 21:00 β€” πŸ‘ 27    πŸ” 8    πŸ’¬ 0    πŸ“Œ 0
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Happy Halloween freshwater fiends! Do you believe in ghosts? Nope. How about ghost ponds?πŸ‘»

Please allow us to introduce you to a the amazing #GhostPond aficionado @carlsayer.bsky.social for inspiring ponderings on the incredible power of ghost pond resurrections!

Check it out: youtu.be/bT1FLPCjEPw

31.10.2025 12:39 β€” πŸ‘ 17    πŸ” 7    πŸ’¬ 0    πŸ“Œ 0

Wondering why water so high. So much easier to get Crassula when pond dry. Was hoping pond would b dry for you this year.

28.10.2025 22:09 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Where are you now? Are you close to eradication? So surprised water in pond when most ponds so dry?

28.10.2025 16:03 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

You are also v. brilliant!

24.10.2025 16:46 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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How do you get a 120% increase in wetland plants in the farmed landscape & massively increase water beetle diversity too? The answer is restore farm ponds by scrub & sediment removal - key is to go in hard & make a big impact. See new paper: share.google/VVowsJzqHdPT...

23.10.2025 18:51 β€” πŸ‘ 32    πŸ” 6    πŸ’¬ 1    πŸ“Œ 2
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River Wye pollution prompts UK's largest environmental lawsuit Livestock and water companies are accused of β€œextensive” pollution in the Wye, Lugg and Usk rivers.

Campaigners + local businesses claim phosphates + nitrates from the collective poo of as many as 23million chickens packed into the Wye catchment from a growing number of intensive chicken farms are driving algal blooms, harming fish + wildlife.
🧡 1/
www.bbc.co.uk/news/article...

08.10.2025 17:30 β€” πŸ‘ 107    πŸ” 72    πŸ’¬ 2    πŸ“Œ 4
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The great Helen Greaves representing us at the Norfolk Biodiversity Partnership Community Biodiversity Fair today @theforumnorwich.bsky.social promoting ponds, #pond restoration & of course #ghostpond resurrection

04.10.2025 12:20 β€” πŸ‘ 19    πŸ” 5    πŸ’¬ 0    πŸ“Œ 1

@carlsayer is following 20 prominent accounts