Dave Tickner
@davetickner.bsky.social
📤 1309
📥 148
📝 137
Rivers, water, nature, people. Sometimes other stuff.
reposted by
Dave Tickner
David Shiffman, Ph.D. 🦈
13 days ago
Epic river migrations of fish rapidly collapsing, UN report finds
loading . . .
Epic river migrations of fish rapidly collapsing, UN report finds
Vast journeys, among world’s great wonders, found to be under threat as freshwater fish populations crash by 81%
https://www.theguardian.com/environment/2026/mar/24/epic-river-migrations-of-fish-rapidly-collapsing-un-report-finds
1
25
11
🆕Global Assessment of Migratory Freshwater Fishes, courtesy of colleagues in
@worldwildlife.org
, showing the scale, urgency, and opportunity for coordinated international action under the Convention on the Conservation of Migratory Species of Wild Animals (CMS).
www.worldwildlife.org/publications...
loading . . .
Global Assessment of Migratory Freshwater Fishes
This report provides the most comprehensive global assessment to date of migratory freshwater fishes.
https://www.worldwildlife.org/publications/global-assessment-migratory-freshwater-fishes/
13 days ago
0
2
1
reposted by
Dave Tickner
🆕 A global review of global science on the societal impacts of
#river
&
#wetland
restoration. Studies from 6 continents show that restoration delivers major gains for
#water
security, flood risk, food security, climate mitigation, cultural values & biodiversity.
wwf.panda.org/discover/our...
17 days ago
1
10
8
🆕 A global review of global science on the societal impacts of
#river
&
#wetland
restoration. Studies from 6 continents show that restoration delivers major gains for
#water
security, flood risk, food security, climate mitigation, cultural values & biodiversity.
wwf.panda.org/discover/our...
17 days ago
1
10
8
"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
loading . . .
LinkedIn
This link will take you to a page that’s not on LinkedIn
https://lnkd.in/ebFzEBmN
5 months ago
0
1
0
reposted by
Dave Tickner
Jeff Opperman
6 months ago
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
loading . . .
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.
https://rivers-of-food.panda.org/#intro
0
3
2
Worth following this from
@jjopperman.bsky.social
.
#WaterYear
was thought-provoking and evocative, with a rather beautiful denouement.
add a skeleton here at some point
6 months ago
0
1
0
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 🧵...
loading . . .
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...
https://cdnsciencepub.com/doi/full/10.1139/er-2024-0139
7 months ago
1
8
8
reposted by
Dave Tickner
SHOAL
7 months ago
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...
loading . . .
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.
https://www.circleofblue.org/2025/water-climate/mekong-rivers-condition-is-study-of-competing-trends-decline-and-resilience/
0
0
1
reposted by
Dave Tickner
Wildlife and Countryside Link
7 months ago
💧 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...
loading . . .
1
8
7
A useful and enjoyable series of blogs by
@jdtonkin.bsky.social
. Kudos. 👏
add a skeleton here at some point
7 months ago
1
2
1
"... 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/...
loading . . .
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
https://www.theguardian.com/environment/2025/sep/18/climate-crisis-driving-extreme-floods-droughts
7 months ago
0
1
0
Well done
@freshwaterbio.bsky.social
and others on this. A nice piece of activist science! 👏
add a skeleton here at some point
7 months ago
0
4
1
(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 🧵...
loading . . .
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...
https://cdnsciencepub.com/doi/full/10.1139/er-2024-0139
7 months ago
1
8
8
reposted by
Dave Tickner
Rachel Salvidge
7 months ago
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/...
loading . . .
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
https://www.theguardian.com/environment/2025/sep/12/toxic-landfill-liquid-sewage-spread-farms-england
13
172
139
reposted by
Dave Tickner
SHOAL
7 months ago
🐟 Søren Skarby’s "Scaled Up" project: The stunning, ultra-detailed world of fish:
buff.ly/6mVQrTr
Find out more about freshwater 👇
buff.ly/MkPOoIN
0
2
1
reposted by
Dave Tickner
SHOAL
7 months ago
🐌 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
1
1
1
reposted by
Dave Tickner
SHOAL
7 months ago
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
1
3
1
"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...
loading . . .
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
https://www.theguardian.com/uk-news/2025/aug/28/activists-blend-science-and-folklore-as-they-try-to-revive-somersets-eel-population
7 months ago
0
1
0
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...
loading . . .
Protecting the Amazon's critical wildlife corridors
Protecting the migrations of jaguars, dolphins, and other species
https://www.worldwildlife.org/stories/protecting-the-amazon-s-critical-wildlife-corridors
8 months ago
1
1
1
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...
loading . . .
Protecting the Amazon's critical wildlife corridors
Protecting the migrations of jaguars, dolphins, and other species
https://www.worldwildlife.org/stories/protecting-the-amazon-s-critical-wildlife-corridors
8 months ago
1
1
1
reposted by
Dave Tickner
Ben Goldfarb
9 months ago
“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...
loading . . .
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.
https://news-decoder.com/finally-a-focus-on-freshwater-fish/
1
75
14
reposted by
Dave Tickner
SHOAL
9 months ago
🐟 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
0
0
2
reposted by
Dave Tickner
SHOAL
9 months ago
📢 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/
0
4
3
Could this be the biggest river restoration initiative in the world?
interestingengineering.com/culture/300-...
@jjopperman.bsky.social
loading . . .
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.
https://interestingengineering.com/culture/300-dams-342-hydro-units-demolished
9 months ago
0
0
0
One for you
@crocodiledunphd.bsky.social
add a skeleton here at some point
10 months ago
1
0
0
$1500 to save a species? A bargain.
add a skeleton here at some point
11 months ago
0
3
1
reposted by
Dave Tickner
Jeff Opperman
11 months ago
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...
loading . . .
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.
https://www.forbes.com/sites/jeffopperman/2025/05/01/the-public-values-water-but-sees-challenges-differently-than-companies/
0
5
2
reposted by
Dave Tickner
PNAS Nexus
11 months ago
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...
0
4
5
Love this new work by Sarah Freed,
@micgylo.bsky.social
et al. A forensic look at how
#agroecology
principles & frameworks address
#water
& aquatic
#biodiversity
. [TL;DR: There's much room for improvement.]
www.nature.com/articles/s43...
Scratches an itch that has bothered me for a while. Kudos.
loading . . .
Water and aquatic foods in revised principles of agroecology can accelerate food systems transformation - Nature Food
Agroecological principles emphasize a holistic approach to food systems transformation but rarely consider water or aquatic foods. This Perspective explores how agroecological principles could be modi...
https://www.nature.com/articles/s43016-025-01152-9
11 months ago
0
3
1
Concerned about nature & the environment? Want to know how to encourage faster action to tackle the causes of environmental destruction? The best thing to do might be simply to talk about it - to friends, family, colleagues.
www.theguardian.com/environment/...
loading . . .
Activate climate’s ‘silent majority’ to supercharge action, experts say
Making concerned people aware their views are far from alone could unlock the change so urgently needed
https://www.theguardian.com/environment/2025/apr/22/activate-climate-silent-majority-support-supercharge-action
12 months ago
0
2
0
reposted by
Dave Tickner
IPBES
about 1 year ago
Looking for high quality free videos?🎥 Introducing: Open Planet! 🧪🌍 A rich free-to-use video library to help storytellers create impactful content for our planet. Find world-class footage to tell your stories about
#biodiversity
& nature ⤵️🌿
openplanet.org
#ForNature
loading . . .
Discover world-class footage of our changing planet.
Open Planet is a global library of high-quality climate and nature footage. It is free to use for educational, environmental and impact storytelling.
https://openplanet.org/
3
100
59
reposted by
Dave Tickner
SHOAL
about 1 year ago
📢 WEBINAR 📢 Join our free
#NewSpecies
webinar on Thursday 3rd April at 5pm BST! We'll be chatting with four expert voices from the world of
#freshwater
, all researchers involved in the discoveries and descriptions of
#NewSpecies2024
Register here👇
buff.ly/oFyNC0P
0
3
3
reposted by
Dave Tickner
Lauren McPhillips
about 1 year ago
New review paper out on fluvial flood reduction 🌊 from nature-based solutions (NBS) 🏞 🌳led by Marina Howarth w/ Alfonso Mejía &
@drericasmithwick.bsky.social
#flooding
#ecosystemservices
#naturebasedsolutions
wires.onlinelibrary.wiley.com/doi/full/10....
loading . . .
Scaling Nature‐Based Solutions for Fluvial Floods: A Worldwide Systematic Review
Studying nature-based solutions ability to mitigate fluvial floods and provide co-benefits by systematically reviewing 131 papers, with 1076 case studies, and grouping them based on Ecosystem Focus T....
https://wires.onlinelibrary.wiley.com/doi/full/10.1002/wat2.70011
4
41
18
reposted by
Dave Tickner
Rachel Salvidge
about 1 year ago
Hold your noses and check out the Watershed Pollution Map to see where untreated poop was dumped into rivers, lakes and seas near you, for a record 3.61 million hours last year...
watershedinvestigations.com/home/find-ou...
19
116
95
reposted by
Dave Tickner
SHOAL
about 1 year ago
💌 Our next monthly newsletter will be landing in your email inboxes soon! Sign up now to stay in the loop with our work, the latest updates in
#freshwater
conservation and more 🐟
#JoinTheShoal
:
buff.ly/yh7ICxa
loading . . .
0
1
1
@jjopperman.bsky.social
add a skeleton here at some point
about 1 year ago
0
3
1
reposted by
Dave Tickner
Tamlin Pavelsky
about 1 year ago
Do you work on lakes globally? Check out what is, to my mind, the most complete global database of lakes (~6M) and associated attributes, newly published in WRR. Also the basis for SWOT lake data.
agupubs.onlinelibrary.wiley.com/doi/full/10....
4
96
36
reposted by
Dave Tickner
SHOAL
about 1 year ago
🌊 Take a moment this International
#DayofAction2025
for Rivers to celebrate the lifelines of our planet Head to our website to learn more about the challenges faced by our rivers and the species that call them home 👇
buff.ly/HPIoUHD
#OurRiversOurFuture
#RightsofRivers
#DoA2025
0
2
1
reposted by
Dave Tickner
Afonydd Cymru
about 1 year ago
The latest water quality assessments for Welsh rivers have been published by Natural Resources Wales. Sadly, they indicate the extent to which targets for 2027 will be missed. Overall, there has been no change in the % of waterbodies achieving good status since 2021 (40%). 1/5
1
4
4
reposted by
Dave Tickner
Robert Macfarlane
about 1 year ago
Calling river-lovers everywhere: today the River Rescue Kit is released by River Action. It's a properly brilliant resource: * training on water testing * legal rights * campaigning advice * fundraising guides * much more Get stuck in; turn passion into action. Pass it on!
kit.riveractionuk.com
loading . . .
Home - River Action: River Rescue Kit
Take action for your river now Every passing moment sees our rivers under siege from pollution. They deserve better. Explore the resources below to find out how you can take action. Explore the river ...
https://kit.riveractionuk.com/
2
178
100
reposted by
Dave Tickner
Dr Phoebe Griffith
about 1 year ago
Hi
#fishsky
- calling all fans of the fish Lota lota or
#burbot
. What common names do you know for this species (in any language) and why is it called that? I have heard some very funny common names in US English and German for the species and would LOVE to know some more!
#fishtaxonomy
6
31
11
reposted by
Dave Tickner
Doc Sarah Lonsdale
about 1 year ago
It's 20 years since Wangari Maathai won the Nobel Peace Prize. Who was this woman who almost didn't go to school at all, who planted 30 million trees and who made a president so afraid of her he had her arrested, and attacked? Read about her here:
#IWM
manchesteruniversitypress.co.uk/blog/2025/03...
loading . . .
Women's History Month - Wangari Maathai - Manchester University Press
To mark Women’s History Month and the publication of her new book Wildly different, we asked historian Sarah Lonsdale to profile the five pioneering women she focuses on, bringing their fascinating st...
https://manchesteruniversitypress.co.uk/blog/2025/03/05/womens-history-month-wangari-maathai/
2
84
40
reposted by
Dave Tickner
Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB)
about 1 year ago
The new issue of our FRESHWATER NEWS provides compact information on the decline of
#species
, ideal amphibian
#ponds
, 'messy' nurseries for river
#fish
, Europe's water resilience strategy and much more. Voices and results from the latest
#freshwater
#research
👇
sh1.sendinblue.com/ajy1jz5jlxpf...
loading . . .
FRESHWATER NEWS | March 2025
24 per cent of freshwater species threatened with extinction ~ River fish depend on “messy” nurseries ~ Marine fish conquer the Panama Canal...
https://sh1.sendinblue.com/ajy1jz5jlxpfe.html?t=1741161150855
1
5
3
This is a very good explainer of why sediment is a big problem for
#dams
.
@jjopperman.bsky.social
@wwf-water.bsky.social
add a skeleton here at some point
about 1 year ago
0
3
0
It's
#WorldWildlifeDay
so a good moment to remind everyone that there are rather a lot of wild plants & animals living in, on & next to
#rivers
,
#lakes
&
#wetlands
. And all that
#freshwater
wildlife is also good for people:
wires.onlinelibrary.wiley.com/doi/full/10....
loading . . .
People need freshwater biodiversity
Freshwater biodiversity (i.e., plants, animals, fungi, microbes, and other living things) provides a suite of critical ecosystem services to people. Collapses in freshwater biodiversity impact people...
https://wires.onlinelibrary.wiley.com/doi/full/10.1002/wat2.1633
about 1 year ago
0
1
0
reposted by
Dave Tickner
Caught by the River
about 1 year ago
Sign a petition urging the government not to drop the proposed and much-needed Chalk Stream Recovery Strategy:
buff.ly/4iiak1L
4
42
27
reposted by
Dave Tickner
SHOAL
about 1 year ago
🚨 NEW SPECIES 2024 🚨 This
#WorldWildlifeDay
we release our annual New Species report, detailing the incredible 260 species of freshwater fish identified in 2024. Read the rep
ort here 👇 buff.ly/yfTuvlq
1
11
6
reposted by
Dave Tickner
The Rivers Trust
about 1 year ago
🎉 Positive River News! As February comes to a close, let's send it off with some uplifting stories. We have the return of wild beavers, stunning river-inspired art, and a community transforming a tough situation into a story of hope. 🧵
1
12
5
An excellent idea, this, providing there is a clear plan for using the results to influence official government policy.
www.theguardian.com/business/202...
loading . . .
‘People’s commission’ to examine future of water industry in England and Wales
Inquiry set up by academics and campaigners to rival ‘too limited’ government-established commission
https://www.theguardian.com/business/2025/feb/27/peoples-commission-to-examine-future-of-water-industry-in-england-and-wales
about 1 year ago
1
2
0
Load more
feeds!
log in