Peter N. Dudley
@conservation.bio
Conservation biologists and researcher at UCSC and NOAA. Working on salmon and sturgeon. Simulations, statistical models, and non-invasive sampling.
www.conservation.bio
www.conservation.bio
Pinned
Peter N. Dudley
@conservation.bio
· Sep 18
Hi! I'm a conservation biologists extending biophysical, organismal-based ecology to a population level using agent-based, spatially explicit, habitat models. I work for NOAA and UCSC and focus on endangered winter-run Chinook salmon and threatened green sturgeon.
Some redwood regrowth post the CZU fire. Always look so funny to me.
December 5, 2025 at 6:37 PM
Some redwood regrowth post the CZU fire. Always look so funny to me.
Reposted by Peter N. Dudley
![Comic. Panels up to the 10-year point are grayed out. New panels since the Ten Years comic, which chronicles the first ten years of PERSON 1's journey with cancer: (1) [two people in bed] PERSON 1 (woman): One more chapter? PERSON 2 (man): Don’t we both have to get up early? PERSON 1: Nnnnnggggh PERSON 2: Sure, good point. (2) [many people wearing masks, walking while looking at graphs on their phones] (3) [birds landing on people] PERSON 2 in beanie and scarf: Hah! They like *my* seeds best. PERSON 1 in scarf holding phone with a bird sitting on it: Wait, how do I take a picture of this one? (4) [two people rowing boats with tree landscape] (5) [Person 1 carries overflowing stack of things to Person 2 in bed] PERSON 1: I brought you honey lemon tea, more pillows, a cinnamon roll, Tylenol, another blanket, a– PERSON 2: It was just Appendicitis, I’m really– PERSON 1: *It is my turn to take care of you and I am going to do it right!* (6) [Two people in car] (7) [still in car) PERSON 1: Oh my god. PERSON 2: Oh my god. (8) [car driving] PERSON 1: Pull over! PERSON 2: I am! (9) [both people get out of car] (10) [Large colored panel of aurora borealis over water with both people looking on] (11) [Person 1 sits against tree while Person 2 lies on the ground] PERSON 1: Fifteen years. No sign of the cancer. (12) I *am* having some weird symptoms. Joint pain. Fatigue. I think I’m losing my close-up vision. PERSON 2: Yeah. Me too. (13) PERSON 2: I think we’re getting old. (14) PERSON 1: I guess that’s okay. PERSON 2: It’s all I wanted.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreihwhjblp5lyiwp63ouar7ocfea7evmckytoeo7rkfuoo4gw5rnrra@jpeg)
November 26, 2025 at 10:32 PM
Reposted by Peter N. Dudley
newwwww illustration below :) check out this sturgeon paper!!!
What underlies plasticity and persistent enhanced growth following warm temperature exposure?
We sequenced lake sturgeon muscle tissue to find out
A variety of molecular mechanisms and cellular changes work together to increase muscular development across timescales
🧪🌎🌐🐠
tinyurl.com/mr2n2cvb
We sequenced lake sturgeon muscle tissue to find out
A variety of molecular mechanisms and cellular changes work together to increase muscular development across timescales
🧪🌎🌐🐠
tinyurl.com/mr2n2cvb
November 26, 2025 at 6:07 PM
newwwww illustration below :) check out this sturgeon paper!!!
Reposted by Peter N. Dudley
What underlies plasticity and persistent enhanced growth following warm temperature exposure?
We sequenced lake sturgeon muscle tissue to find out
A variety of molecular mechanisms and cellular changes work together to increase muscular development across timescales
🧪🌎🌐🐠
tinyurl.com/mr2n2cvb
We sequenced lake sturgeon muscle tissue to find out
A variety of molecular mechanisms and cellular changes work together to increase muscular development across timescales
🧪🌎🌐🐠
tinyurl.com/mr2n2cvb
November 26, 2025 at 5:52 PM
What underlies plasticity and persistent enhanced growth following warm temperature exposure?
We sequenced lake sturgeon muscle tissue to find out
A variety of molecular mechanisms and cellular changes work together to increase muscular development across timescales
🧪🌎🌐🐠
tinyurl.com/mr2n2cvb
We sequenced lake sturgeon muscle tissue to find out
A variety of molecular mechanisms and cellular changes work together to increase muscular development across timescales
🧪🌎🌐🐠
tinyurl.com/mr2n2cvb
Reposted by Peter N. Dudley
In a new article on our blog, Safina Center Conservationist-in-Residence @hobdy71.bsky.social details the momentous release of three rehabilitated Newell's shearwaters—a native Hawaiian seabird known locally as ‘a’o.
www.safinacenter.org/blog/flying-free-on-kauai
#conservation #seabirds 🌎
www.safinacenter.org/blog/flying-free-on-kauai
#conservation #seabirds 🌎
November 25, 2025 at 6:48 PM
In a new article on our blog, Safina Center Conservationist-in-Residence @hobdy71.bsky.social details the momentous release of three rehabilitated Newell's shearwaters—a native Hawaiian seabird known locally as ‘a’o.
www.safinacenter.org/blog/flying-free-on-kauai
#conservation #seabirds 🌎
www.safinacenter.org/blog/flying-free-on-kauai
#conservation #seabirds 🌎
Reposted by Peter N. Dudley
When a meal fights back!
I’ve only gotten distant looks at Yellow-crowned Night-heron adults, delighted to find one close! It’s trying to eat a crab but the crab’s got its beak pinched.
Super compressed video quickly moved to my phone from my camera (sorry!) just too excited to wait to share
I’ve only gotten distant looks at Yellow-crowned Night-heron adults, delighted to find one close! It’s trying to eat a crab but the crab’s got its beak pinched.
Super compressed video quickly moved to my phone from my camera (sorry!) just too excited to wait to share
November 25, 2025 at 6:01 PM
When a meal fights back!
I’ve only gotten distant looks at Yellow-crowned Night-heron adults, delighted to find one close! It’s trying to eat a crab but the crab’s got its beak pinched.
Super compressed video quickly moved to my phone from my camera (sorry!) just too excited to wait to share
I’ve only gotten distant looks at Yellow-crowned Night-heron adults, delighted to find one close! It’s trying to eat a crab but the crab’s got its beak pinched.
Super compressed video quickly moved to my phone from my camera (sorry!) just too excited to wait to share
Reposted by Peter N. Dudley
Restoring #TopPredators 🐺 to #NorthAmerican #ecosystems does it help rebalance? Apparently the situation is more complicated… 🌍
news.ucsc.edu/2025/11/what...
#EcologicalRestoration #Ecology #FoodChains #Nature
news.ucsc.edu/2025/11/what...
#EcologicalRestoration #Ecology #FoodChains #Nature
What happens to ecosystems when you restore iconic top predators? It's more complicated than you might think.
A new study analyzes findings from more than 170 papers to clarify what we know so far about the ecological impacts of large carnivore recovery in North America and what mysteries still remain.
news.ucsc.edu
November 22, 2025 at 7:51 AM
Restoring #TopPredators 🐺 to #NorthAmerican #ecosystems does it help rebalance? Apparently the situation is more complicated… 🌍
news.ucsc.edu/2025/11/what...
#EcologicalRestoration #Ecology #FoodChains #Nature
news.ucsc.edu/2025/11/what...
#EcologicalRestoration #Ecology #FoodChains #Nature
Reposted by Peter N. Dudley
sometimes I do field work in the most gorgeous water (Harrison river, BC) and you can see the sturgeon swim away forever 🥹
this is a nice close up of the scutes that cover sturgeon for protection, they have several rows of these bony plates that can be really sharp!
#sturgeonsaturday 🧪👩🏻🔬🌎🌐
this is a nice close up of the scutes that cover sturgeon for protection, they have several rows of these bony plates that can be really sharp!
#sturgeonsaturday 🧪👩🏻🔬🌎🌐
November 23, 2025 at 2:47 AM
sometimes I do field work in the most gorgeous water (Harrison river, BC) and you can see the sturgeon swim away forever 🥹
this is a nice close up of the scutes that cover sturgeon for protection, they have several rows of these bony plates that can be really sharp!
#sturgeonsaturday 🧪👩🏻🔬🌎🌐
this is a nice close up of the scutes that cover sturgeon for protection, they have several rows of these bony plates that can be really sharp!
#sturgeonsaturday 🧪👩🏻🔬🌎🌐
I will hit up arrow in a terminal like 20 times rather than type in a 5 letter command.
November 20, 2025 at 9:59 PM
I will hit up arrow in a terminal like 20 times rather than type in a 5 letter command.
Reposted by Peter N. Dudley
Something to brighten your day amidst all the other darkness. Breaching humpbacks off Channel Islands National Park. 🌎🐋
November 20, 2025 at 3:36 PM
Something to brighten your day amidst all the other darkness. Breaching humpbacks off Channel Islands National Park. 🌎🐋
Reposted by Peter N. Dudley
Humpback whale beached on Oregon coast, tangled in crabbing gear 🧪🦑🌎
Officials warn public to keep distance from humpback whale stranded on Oregon beach
A humpback whale washed ashore Saturday night on San Marine, Ore., entangled in crabbing gear, according to witnesses and local officials.
katu.com
November 20, 2025 at 6:28 PM
Humpback whale beached on Oregon coast, tangled in crabbing gear 🧪🦑🌎
Reposted by Peter N. Dudley
“There are fewer right whales alive today than are going to be people at this conference,”
#RightWhales #whales #conservationmonitoring #conservationlegislation 🌎🦑🐋
www.theglobeandmail.com/canada/artic...
#RightWhales #whales #conservationmonitoring #conservationlegislation 🌎🦑🐋
www.theglobeandmail.com/canada/artic...
North Atlantic right whale population grows for fourth straight year, but recovery still far off
A 2% increase in 2024 brings the population to 384 animals
www.theglobeandmail.com
November 19, 2025 at 1:54 PM
“There are fewer right whales alive today than are going to be people at this conference,”
#RightWhales #whales #conservationmonitoring #conservationlegislation 🌎🦑🐋
www.theglobeandmail.com/canada/artic...
#RightWhales #whales #conservationmonitoring #conservationlegislation 🌎🦑🐋
www.theglobeandmail.com/canada/artic...
Just stopped by to post this
November 18, 2025 at 10:55 PM
Just stopped by to post this
Reposted by Peter N. Dudley
Wow! Wolves are raiding crab traps for fish by pulling the buoy line until the trap comes ashore and then shredding it.
Someone still needs to teach these proto-tool users how to repair, maintain, and deploy the nets, but they have the critical step down! 🦊🐟🌎
www.nbcnews.com/world/canada...
Someone still needs to teach these proto-tool users how to repair, maintain, and deploy the nets, but they have the critical step down! 🦊🐟🌎
www.nbcnews.com/world/canada...
Video shows a wild wolf stealing fish in a first possible tool use
The wolf “appears to demonstrate a sophisticated understanding of the multi-step connection between the floating buoy and the bait within the out-of-sight trap,” scientists said.
www.nbcnews.com
November 18, 2025 at 6:07 PM
Wow! Wolves are raiding crab traps for fish by pulling the buoy line until the trap comes ashore and then shredding it.
Someone still needs to teach these proto-tool users how to repair, maintain, and deploy the nets, but they have the critical step down! 🦊🐟🌎
www.nbcnews.com/world/canada...
Someone still needs to teach these proto-tool users how to repair, maintain, and deploy the nets, but they have the critical step down! 🦊🐟🌎
www.nbcnews.com/world/canada...
Reposted by Peter N. Dudley
Are you working with #OpenData to advance #freshwater #biogeochemistry? Consider submitting an abstract to share your science in our special session at #2026SFS!
Organized by Ashif H Abir, Wil Wollheim, me, & Kelly Aho @kellyaho.bsky.social. Abstracts due 16 Jan 2026. www.sfsannualmeeting.org 💧🌎🧪
Organized by Ashif H Abir, Wil Wollheim, me, & Kelly Aho @kellyaho.bsky.social. Abstracts due 16 Jan 2026. www.sfsannualmeeting.org 💧🌎🧪
November 18, 2025 at 2:56 PM
Are you working with #OpenData to advance #freshwater #biogeochemistry? Consider submitting an abstract to share your science in our special session at #2026SFS!
Organized by Ashif H Abir, Wil Wollheim, me, & Kelly Aho @kellyaho.bsky.social. Abstracts due 16 Jan 2026. www.sfsannualmeeting.org 💧🌎🧪
Organized by Ashif H Abir, Wil Wollheim, me, & Kelly Aho @kellyaho.bsky.social. Abstracts due 16 Jan 2026. www.sfsannualmeeting.org 💧🌎🧪
Reposted by Peter N. Dudley
From Thomas MacGuane’s collection “Gallatin Canyon”:
November 17, 2025 at 8:30 PM
From Thomas MacGuane’s collection “Gallatin Canyon”:
Reposted by Peter N. Dudley
did you know we had ~80 huge sturgeon die this year (that we know of) in 2
BC rivers? These deaths occurred during the summer when the sockeye salmon were returning
sturgeon eat many salmon at once, and this may be overloading their metabolic capacity during hot summers 😱
#sturgeonsaturday 🧪👩🏻🔬🌎🌐
BC rivers? These deaths occurred during the summer when the sockeye salmon were returning
sturgeon eat many salmon at once, and this may be overloading their metabolic capacity during hot summers 😱
#sturgeonsaturday 🧪👩🏻🔬🌎🌐
November 15, 2025 at 11:41 PM
did you know we had ~80 huge sturgeon die this year (that we know of) in 2
BC rivers? These deaths occurred during the summer when the sockeye salmon were returning
sturgeon eat many salmon at once, and this may be overloading their metabolic capacity during hot summers 😱
#sturgeonsaturday 🧪👩🏻🔬🌎🌐
BC rivers? These deaths occurred during the summer when the sockeye salmon were returning
sturgeon eat many salmon at once, and this may be overloading their metabolic capacity during hot summers 😱
#sturgeonsaturday 🧪👩🏻🔬🌎🌐
Reposted by Peter N. Dudley
Vaquitas "hanging on" is a fair description. Describing this as a modest increase is not following the science.
From the survey report summary - "There is too much uncertainty in visual estimates to make strong conclusions about a trend in vaquita numbers..."
more quotes to come
🐳🌍🦑
1/2
From the survey report summary - "There is too much uncertainty in visual estimates to make strong conclusions about a trend in vaquita numbers..."
more quotes to come
🐳🌍🦑
1/2
November 6, 2025 at 10:39 PM
Vaquitas "hanging on" is a fair description. Describing this as a modest increase is not following the science.
From the survey report summary - "There is too much uncertainty in visual estimates to make strong conclusions about a trend in vaquita numbers..."
more quotes to come
🐳🌍🦑
1/2
From the survey report summary - "There is too much uncertainty in visual estimates to make strong conclusions about a trend in vaquita numbers..."
more quotes to come
🐳🌍🦑
1/2
Reposted by Peter N. Dudley
🐀 vs. 🦇 👀
Behavioral #plasticity: First documentation of systematic predation on #bats by #rats.
Gloza-Rausch et al 2025 Global Ecology and Conservation. Active predation by brown #rats on #bats at urban mass hibernacula in Northern #Germany: Conservation and one health implications
doi.org/10.1016/j.ge...
Gloza-Rausch et al 2025 Global Ecology and Conservation. Active predation by brown #rats on #bats at urban mass hibernacula in Northern #Germany: Conservation and one health implications
doi.org/10.1016/j.ge...
November 6, 2025 at 4:11 PM
🐀 vs. 🦇 👀
Reposted by Peter N. Dudley
Grateful to spend two days on the Klamath watching chinook, liberated by dam removal, return to streams from which they’d been precluded since the Titanic sank. Fish are everywhere, in numbers that stagger the mind & locations that biologists figured would take years to repopulate. Too beautiful.
November 5, 2025 at 9:17 PM
Grateful to spend two days on the Klamath watching chinook, liberated by dam removal, return to streams from which they’d been precluded since the Titanic sank. Fish are everywhere, in numbers that stagger the mind & locations that biologists figured would take years to repopulate. Too beautiful.
Reposted by Peter N. Dudley
🧪🌎
US scientists uncover oldest directly dated ice, preserved for 6 million years
The ice holds tiny air bubbles that act as “time machines,” granting a look into the planet’s past climate
interestingengineering.com/science/olde...
The ice holds tiny air bubbles that act as “time machines,” granting a look into the planet’s past climate
interestingengineering.com/science/olde...
6-million-year-old Antarctic ice offers window to ancient Earth
The 6-million-year-old ice, now recognized as the oldest sample on Earth, was found in East Antarctica's Allan Hills region.
interestingengineering.com
November 5, 2025 at 5:50 PM
🧪🌎
Reposted by Peter N. Dudley
Stream profiles and topography. From my forthcoming book from Yale University Press: STREAMS: An Illustrated Guide, 2026.
🧪🌿🌎🐡 #wildlife #scicomm #sciviz #geology #illustration #scientificillustration #visualscicomm #sciviz #scicomm #streams #rivers #Freshwater #riverscapes #riparian
🧪🌿🌎🐡 #wildlife #scicomm #sciviz #geology #illustration #scientificillustration #visualscicomm #sciviz #scicomm #streams #rivers #Freshwater #riverscapes #riparian
November 5, 2025 at 1:22 PM
Stream profiles and topography. From my forthcoming book from Yale University Press: STREAMS: An Illustrated Guide, 2026.
🧪🌿🌎🐡 #wildlife #scicomm #sciviz #geology #illustration #scientificillustration #visualscicomm #sciviz #scicomm #streams #rivers #Freshwater #riverscapes #riparian
🧪🌿🌎🐡 #wildlife #scicomm #sciviz #geology #illustration #scientificillustration #visualscicomm #sciviz #scicomm #streams #rivers #Freshwater #riverscapes #riparian
Reposted by Peter N. Dudley
‼️ Giant manta off the coast of New York and New Jersey. About 10 feet across. A team of WCS scientists from the New York Aquarium recently spotted it on a research trip to #HudsonCanyon.
🌎 Help us protect the canyon: secure.wcs.org/campaign/hud...
🌎 Help us protect the canyon: secure.wcs.org/campaign/hud...
November 4, 2025 at 3:06 PM
‼️ Giant manta off the coast of New York and New Jersey. About 10 feet across. A team of WCS scientists from the New York Aquarium recently spotted it on a research trip to #HudsonCanyon.
🌎 Help us protect the canyon: secure.wcs.org/campaign/hud...
🌎 Help us protect the canyon: secure.wcs.org/campaign/hud...
Reposted by Peter N. Dudley
The Zoom Earth loop shows the #DustStorm expanding from SE Iran across the Gulf of Oman — dense plumes spilling offshore and diffusing over the Arabian Sea. A clear view of how regional winds redistribute surface dust at scale.
🛰Meteosat @eumetsat.int
✂️Visualized @zoom.earth
🛰Meteosat @eumetsat.int
✂️Visualized @zoom.earth
November 4, 2025 at 12:53 PM
The Zoom Earth loop shows the #DustStorm expanding from SE Iran across the Gulf of Oman — dense plumes spilling offshore and diffusing over the Arabian Sea. A clear view of how regional winds redistribute surface dust at scale.
🛰Meteosat @eumetsat.int
✂️Visualized @zoom.earth
🛰Meteosat @eumetsat.int
✂️Visualized @zoom.earth
"The only efficient use of generative "AI" I see is helping to meet basic and excessive administrative burdens (e.g. filing unimportant progress reports). Maybe we should just reduce those rather than invest in a technology that can write a C+ essay."
November 3, 2025 at 5:55 PM
"The only efficient use of generative "AI" I see is helping to meet basic and excessive administrative burdens (e.g. filing unimportant progress reports). Maybe we should just reduce those rather than invest in a technology that can write a C+ essay."