Dave Tickner
@davetickner.bsky.social
Rivers, water, nature, people. Sometimes other stuff.
"This is a hugely consequential moment. The planet’s future hangs in the balance."
Calling PhD qualified experts in Earth systems, climate, natural & social sciences to sign the Dartington Declaration:
lnkd.in/ebFzEBmN
Calling PhD qualified experts in Earth systems, climate, natural & social sciences to sign the Dartington Declaration:
lnkd.in/ebFzEBmN
LinkedIn
This link will take you to a page that’s not on LinkedIn
lnkd.in
October 31, 2025 at 8:50 AM
"This is a hugely consequential moment. The planet’s future hangs in the balance."
Calling PhD qualified experts in Earth systems, climate, natural & social sciences to sign the Dartington Declaration:
lnkd.in/ebFzEBmN
Calling PhD qualified experts in Earth systems, climate, natural & social sciences to sign the Dartington Declaration:
lnkd.in/ebFzEBmN
Reposted by Dave Tickner
In microsite "Rivers of Food" we show that approximately one-third of world's food supply is supported by rivers
rivers-of-food.panda.org
rivers-of-food.panda.org
Rivers of Food
One third of the world's food production is dependent on rivers. But they are under increasing pressure, threatening global food security now and in the future.
rivers-of-food.panda.org
October 16, 2025 at 6:04 PM
In microsite "Rivers of Food" we show that approximately one-third of world's food supply is supported by rivers
rivers-of-food.panda.org
rivers-of-food.panda.org
Worth following this from @jjopperman.bsky.social. #WaterYear was thought-provoking and evocative, with a rather beautiful denouement.
Three years ago I did a year-long project called #WaterYear: one photo of water each day w/ short content on water-y connections: from the hydrological to the emotional. That was on the other place, so reprising for BlueSky as today is 1st day of WaterYear in the US. See tomorrow for theme song!
October 2, 2025 at 7:26 AM
Worth following this from @jjopperman.bsky.social. #WaterYear was thought-provoking and evocative, with a rather beautiful denouement.
Reposted by Dave Tickner
(1/n)
🆕: Addressing the policy & business drivers of global freshwater biodiversity loss.
cdnsciencepub.com/doi/full/10....
Or (to provoke a debate), is restoration of #rivers, #lakes & #wetlands a sufficient response to the global collapse in freshwater biodiversity?
A 🧵...
🆕: Addressing the policy & business drivers of global freshwater biodiversity loss.
cdnsciencepub.com/doi/full/10....
Or (to provoke a debate), is restoration of #rivers, #lakes & #wetlands a sufficient response to the global collapse in freshwater biodiversity?
A 🧵...
Addressing the policy and business drivers of global freshwater biodiversity loss
While they are important, local or catchment-level conservation efforts are by themselves unlikely to bend the curve of dramatic global-scale biodiversity loss in rivers, lakes, and freshwater wetland...
cdnsciencepub.com
September 16, 2025 at 11:15 AM
(1/n)
🆕: Addressing the policy & business drivers of global freshwater biodiversity loss.
cdnsciencepub.com/doi/full/10....
Or (to provoke a debate), is restoration of #rivers, #lakes & #wetlands a sufficient response to the global collapse in freshwater biodiversity?
A 🧵...
🆕: Addressing the policy & business drivers of global freshwater biodiversity loss.
cdnsciencepub.com/doi/full/10....
Or (to provoke a debate), is restoration of #rivers, #lakes & #wetlands a sufficient response to the global collapse in freshwater biodiversity?
A 🧵...
Reposted by Dave Tickner
Can the Mekong, the World’s Most Productive River, Endure Relentless Strain?
Not indefinitely. The river's story is a cascade of thresholds already crossed.
www.circleofblue.org/2025/water-c...
Not indefinitely. The river's story is a cascade of thresholds already crossed.
www.circleofblue.org/2025/water-c...
Can the Mekong, the World's Most Productive River, Endure Relentless Strain?
Explore the plight of Mekong River endangered fish, including the giant catfish and their struggle against extinction.
www.circleofblue.org
September 18, 2025 at 11:32 AM
Can the Mekong, the World’s Most Productive River, Endure Relentless Strain?
Not indefinitely. The river's story is a cascade of thresholds already crossed.
www.circleofblue.org/2025/water-c...
Not indefinitely. The river's story is a cascade of thresholds already crossed.
www.circleofblue.org/2025/water-c...
Reposted by Dave Tickner
💧 Our #rivers are polluted, overheated, & stripped of their natural features
We’re calling on the government to make #SpaceForWater and support a network of nature-rich river corridors across England
✍️ Sign the petition to help restore our rivers: petition.parliament.uk/petitions/72...
We’re calling on the government to make #SpaceForWater and support a network of nature-rich river corridors across England
✍️ Sign the petition to help restore our rivers: petition.parliament.uk/petitions/72...
September 18, 2025 at 7:53 AM
💧 Our #rivers are polluted, overheated, & stripped of their natural features
We’re calling on the government to make #SpaceForWater and support a network of nature-rich river corridors across England
✍️ Sign the petition to help restore our rivers: petition.parliament.uk/petitions/72...
We’re calling on the government to make #SpaceForWater and support a network of nature-rich river corridors across England
✍️ Sign the petition to help restore our rivers: petition.parliament.uk/petitions/72...
A useful and enjoyable series of blogs by @jdtonkin.bsky.social. Kudos. 👏
Post three of a three-part series on some unique aspects of rivers and why they’re so challenging to manage. We’re exploring how rivers function as networks, their unique rhythms, and what that means for conservation and restoration.
predirections.substack.com/p/to-heal-a-...
predirections.substack.com/p/to-heal-a-...
September 18, 2025 at 8:20 AM
A useful and enjoyable series of blogs by @jdtonkin.bsky.social. Kudos. 👏
"... measures to reduce the impact of extreme swings in the water cycle include improving water storage & encouraging changes to farming techniques."
The most important measure of all would be to get popular acceptance for better water allocation & management.
www.theguardian.com/environment/...
The most important measure of all would be to get popular acceptance for better water allocation & management.
www.theguardian.com/environment/...
Only a third of world’s river basins experienced normal conditions in 2024
Increasingly erratic water cycle is creating food scarcity, rising prices, conflict and migration, says UN agency
www.theguardian.com
September 18, 2025 at 7:26 AM
"... measures to reduce the impact of extreme swings in the water cycle include improving water storage & encouraging changes to farming techniques."
The most important measure of all would be to get popular acceptance for better water allocation & management.
www.theguardian.com/environment/...
The most important measure of all would be to get popular acceptance for better water allocation & management.
www.theguardian.com/environment/...
Well done @freshwaterbio.bsky.social and others on this. A nice piece of activist science! 👏
Over 600 scientists from across Europe have signed a joint statement calling on the EU to urgently update its #waterpollution rules to protect #freshwater ecosystems... before it’s too late! 💧🌍💙
View the full statement and signatories:
www.fba.org.uk/fba-voice/sc...
#WaterPollution #EUEnvironment
View the full statement and signatories:
www.fba.org.uk/fba-voice/sc...
#WaterPollution #EUEnvironment
September 17, 2025 at 7:20 PM
Well done @freshwaterbio.bsky.social and others on this. A nice piece of activist science! 👏
(1/n)
🆕: Addressing the policy & business drivers of global freshwater biodiversity loss.
cdnsciencepub.com/doi/full/10....
Or (to provoke a debate), is restoration of #rivers, #lakes & #wetlands a sufficient response to the global collapse in freshwater biodiversity?
A 🧵...
🆕: Addressing the policy & business drivers of global freshwater biodiversity loss.
cdnsciencepub.com/doi/full/10....
Or (to provoke a debate), is restoration of #rivers, #lakes & #wetlands a sufficient response to the global collapse in freshwater biodiversity?
A 🧵...
Addressing the policy and business drivers of global freshwater biodiversity loss
While they are important, local or catchment-level conservation efforts are by themselves unlikely to bend the curve of dramatic global-scale biodiversity loss in rivers, lakes, and freshwater wetland...
cdnsciencepub.com
September 16, 2025 at 11:15 AM
(1/n)
🆕: Addressing the policy & business drivers of global freshwater biodiversity loss.
cdnsciencepub.com/doi/full/10....
Or (to provoke a debate), is restoration of #rivers, #lakes & #wetlands a sufficient response to the global collapse in freshwater biodiversity?
A 🧵...
🆕: Addressing the policy & business drivers of global freshwater biodiversity loss.
cdnsciencepub.com/doi/full/10....
Or (to provoke a debate), is restoration of #rivers, #lakes & #wetlands a sufficient response to the global collapse in freshwater biodiversity?
A 🧵...
Reposted by Dave Tickner
EXCLUSIVE: England’s farms are being fertilised with a cocktail of toxic landfill juice + sewage sludge.
750,000 tonnes of landfill leachate tankered to sewage works every year → mixed into sewage → spread on farmers' fields. 1/
www.theguardian.com/environment/...
750,000 tonnes of landfill leachate tankered to sewage works every year → mixed into sewage → spread on farmers' fields. 1/
www.theguardian.com/environment/...
Thousands of tonnes of toxic landfill liquid added to sewage and spread on English farms
Exclusive: Leachate is tankered to treatment works where it mixes with sewage and industrial effluent
www.theguardian.com
September 12, 2025 at 6:19 AM
EXCLUSIVE: England’s farms are being fertilised with a cocktail of toxic landfill juice + sewage sludge.
750,000 tonnes of landfill leachate tankered to sewage works every year → mixed into sewage → spread on farmers' fields. 1/
www.theguardian.com/environment/...
750,000 tonnes of landfill leachate tankered to sewage works every year → mixed into sewage → spread on farmers' fields. 1/
www.theguardian.com/environment/...
Reposted by Dave Tickner
🐟 Søren Skarby’s "Scaled Up" project: The stunning, ultra-detailed world of fish: buff.ly/6mVQrTr
Find out more about freshwater 👇
buff.ly/MkPOoIN
Find out more about freshwater 👇
buff.ly/MkPOoIN
August 28, 2025 at 4:24 PM
🐟 Søren Skarby’s "Scaled Up" project: The stunning, ultra-detailed world of fish: buff.ly/6mVQrTr
Find out more about freshwater 👇
buff.ly/MkPOoIN
Find out more about freshwater 👇
buff.ly/MkPOoIN
Reposted by Dave Tickner
🐌 Africa’s freshwater ecosystems depend on little creatures like insects and snails: study maps overlooked species: buff.ly/btqzPAg
🏞️ Some rivers have rights, but author Robert Macfarlane argues they’re also alive: buff.ly/ri198Um
August 28, 2025 at 4:24 PM
🐌 Africa’s freshwater ecosystems depend on little creatures like insects and snails: study maps overlooked species: buff.ly/btqzPAg
🏞️ Some rivers have rights, but author Robert Macfarlane argues they’re also alive: buff.ly/ri198Um
Reposted by Dave Tickner
ICYMI: a round-up of recent freshwater news from around the world
🌍 Africa’s freshwater fish face a crisis — but solutions are within reach: buff.ly/e2sIOWZ
🌊 Wetlands at risk, but new report offers road map for recovery: buff.ly/1URK9gF
🌍 Africa’s freshwater fish face a crisis — but solutions are within reach: buff.ly/e2sIOWZ
🌊 Wetlands at risk, but new report offers road map for recovery: buff.ly/1URK9gF
August 28, 2025 at 4:24 PM
ICYMI: a round-up of recent freshwater news from around the world
🌍 Africa’s freshwater fish face a crisis — but solutions are within reach: buff.ly/e2sIOWZ
🌊 Wetlands at risk, but new report offers road map for recovery: buff.ly/1URK9gF
🌍 Africa’s freshwater fish face a crisis — but solutions are within reach: buff.ly/e2sIOWZ
🌊 Wetlands at risk, but new report offers road map for recovery: buff.ly/1URK9gF
"But more than that – it gets people to visit these weirs. They notice the water. They count the eels. They start to care.”
#Eels, #Freshwater, #Rivers
www.theguardian.com/uk-news/2025...
#Eels, #Freshwater, #Rivers
www.theguardian.com/uk-news/2025...
Activists blend science and folklore as they try to revive Somerset’s eel population
Hugh Fearnley-Whittingstall and Feargal Sharkey back campaign to save the animal, which once inspired placenames, songs and stories
www.theguardian.com
August 28, 2025 at 4:48 PM
"But more than that – it gets people to visit these weirs. They notice the water. They count the eels. They start to care.”
#Eels, #Freshwater, #Rivers
www.theguardian.com/uk-news/2025...
#Eels, #Freshwater, #Rivers
www.theguardian.com/uk-news/2025...
Reposted by Dave Tickner
Want to safeguard populations of flagship #Amazon species such as #jaguars and #RiverDolphins? Turns out that key corridors comprising 17% of the total Amazon basin are the critical places to focus.
www.worldwildlife.org/stories/prot...
www.worldwildlife.org/stories/prot...
Protecting the Amazon's critical wildlife corridors
Protecting the migrations of jaguars, dolphins, and other species
www.worldwildlife.org
August 13, 2025 at 8:11 AM
Want to safeguard populations of flagship #Amazon species such as #jaguars and #RiverDolphins? Turns out that key corridors comprising 17% of the total Amazon basin are the critical places to focus.
www.worldwildlife.org/stories/prot...
www.worldwildlife.org/stories/prot...
Want to safeguard populations of flagship #Amazon species such as #jaguars and #RiverDolphins? Turns out that key corridors comprising 17% of the total Amazon basin are the critical places to focus.
www.worldwildlife.org/stories/prot...
www.worldwildlife.org/stories/prot...
Protecting the Amazon's critical wildlife corridors
Protecting the migrations of jaguars, dolphins, and other species
www.worldwildlife.org
August 13, 2025 at 8:11 AM
Want to safeguard populations of flagship #Amazon species such as #jaguars and #RiverDolphins? Turns out that key corridors comprising 17% of the total Amazon basin are the critical places to focus.
www.worldwildlife.org/stories/prot...
www.worldwildlife.org/stories/prot...
Reposted by Dave Tickner
“It’s time we stopped treating freshwater fishes as an afterthought… We must act now before the rivers dry out.”
news-decoder.com/finally-a-fo...
news-decoder.com/finally-a-fo...
Finally, a focus on freshwater fish
Fish are disappearing in an African lake that feeds the people of four countries. Freshwater lakes may not be as vast as oceans but they are just as important.
news-decoder.com
July 18, 2025 at 3:46 AM
“It’s time we stopped treating freshwater fishes as an afterthought… We must act now before the rivers dry out.”
news-decoder.com/finally-a-fo...
news-decoder.com/finally-a-fo...
Reposted by Dave Tickner
🐟 Out now: WWF’s new Africa’s Forgotten Fishes report sounds the alarm for Africa’s freshwater fishes and their ecosystems.
❌ 26% of assessed freshwater fish species on the continent are threatened with extinction, and the true number may be even higher.
📘 Read the report: africa.panda.org
❌ 26% of assessed freshwater fish species on the continent are threatened with extinction, and the true number may be even higher.
📘 Read the report: africa.panda.org
July 15, 2025 at 8:06 AM
🐟 Out now: WWF’s new Africa’s Forgotten Fishes report sounds the alarm for Africa’s freshwater fishes and their ecosystems.
❌ 26% of assessed freshwater fish species on the continent are threatened with extinction, and the true number may be even higher.
📘 Read the report: africa.panda.org
❌ 26% of assessed freshwater fish species on the continent are threatened with extinction, and the true number may be even higher.
📘 Read the report: africa.panda.org
Reposted by Dave Tickner
📢 We're hiring!
Roles at SHOAL don't come up that often, and when they do, we know they're exciting: are you our new Data Officer?
Learn more and apply here
👉 shoalconservation.org/careers/
Roles at SHOAL don't come up that often, and when they do, we know they're exciting: are you our new Data Officer?
Learn more and apply here
👉 shoalconservation.org/careers/
July 14, 2025 at 12:11 PM
📢 We're hiring!
Roles at SHOAL don't come up that often, and when they do, we know they're exciting: are you our new Data Officer?
Learn more and apply here
👉 shoalconservation.org/careers/
Roles at SHOAL don't come up that often, and when they do, we know they're exciting: are you our new Data Officer?
Learn more and apply here
👉 shoalconservation.org/careers/
Could this be the biggest river restoration initiative in the world?
interestingengineering.com/culture/300-...
@jjopperman.bsky.social
interestingengineering.com/culture/300-...
@jjopperman.bsky.social
300 dams demolished for ‘world’s biggest’ revival of river habitat
Dams and hydropower stations change water flows, reduce oxygen levels, and sever vital connections between spawning and feeding grounds.
interestingengineering.com
July 14, 2025 at 9:25 AM
Could this be the biggest river restoration initiative in the world?
interestingengineering.com/culture/300-...
@jjopperman.bsky.social
interestingengineering.com/culture/300-...
@jjopperman.bsky.social
One for you @crocodiledunphd.bsky.social
In England “wood with beaver facets [were found] in multiple human constructions, along with extensive networks of ancient beaver dams and channels that had been integrated into prehistoric settlements.”
A fascinating piece by Sarah Newman on how animals inspired culture 🦫
aeon.co/essays/did-a...
A fascinating piece by Sarah Newman on how animals inspired culture 🦫
aeon.co/essays/did-a...
Did animals provide the blueprints for human culture? | Aeon Essays
Prehistoric humans didn’t create art and architecture out of nothing. They took inspiration from the nonhuman world
aeon.co
June 19, 2025 at 3:47 PM
One for you @crocodiledunphd.bsky.social
$1500 to save a species? A bargain.
Help us save this beautiful place and the special things in it. We are creating a Yayasan to formally caretake Pergam
forest & support the community to take ownership. Watch sanctuary here: vimeo.com/1077004302?s...
Please support us before it’s too late: gofund.me/a6804101
@shoalorg.bsky.social
forest & support the community to take ownership. Watch sanctuary here: vimeo.com/1077004302?s...
Please support us before it’s too late: gofund.me/a6804101
@shoalorg.bsky.social
May 8, 2025 at 9:46 AM
$1500 to save a species? A bargain.
Reposted by Dave Tickner
A poll of 30,000 people in 31 countries found that the public places very high value on water and prioritizes protecting water quality, lakes and rivers - and their priority actions are somewhat different than what companies generally focus on...
www.forbes.com/sites/jeffop...
www.forbes.com/sites/jeffop...
The Public Values Water But Sees Challenges Differently Than Companies
A set of polls—including more than 30,000 people across 31 countries—found that the public sees water as a top priority, with an emphasis on water quality.
www.forbes.com
May 1, 2025 at 12:44 PM
A poll of 30,000 people in 31 countries found that the public places very high value on water and prioritizes protecting water quality, lakes and rivers - and their priority actions are somewhat different than what companies generally focus on...
www.forbes.com/sites/jeffop...
www.forbes.com/sites/jeffop...
Reposted by Dave Tickner
As consumption of antibiotics has risen around the world, so has antibiotic pollution of rivers. A model identifies the rivers most likely affected and the drugs most likely to be found in the water. In PNAS Nexus: academic.oup.com/pnasnexus/ar...
April 30, 2025 at 3:57 PM
As consumption of antibiotics has risen around the world, so has antibiotic pollution of rivers. A model identifies the rivers most likely affected and the drugs most likely to be found in the water. In PNAS Nexus: academic.oup.com/pnasnexus/ar...