Peter N. Dudley
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conservation.bio
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
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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
Reposted by Peter N. Dudley
Fifteen Years

xkcd.com/3172/
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
November 26, 2025 at 6:07 PM
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
November 26, 2025 at 5:52 PM
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 🌎
November 25, 2025 at 6:48 PM
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
November 25, 2025 at 6:01 PM
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 🧪👩🏻‍🔬🌎🌐
November 23, 2025 at 2:47 AM
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
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
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
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...
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
Just stopped by to post this
November 18, 2025 at 10:55 PM
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...
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
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 💧🌎🧪
November 18, 2025 at 2:56 PM
Reposted by Peter N. Dudley
From Thomas MacGuane’s collection “Gallatin Canyon”:
November 17, 2025 at 8:30 PM
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 🧪👩🏻‍🔬🌎🌐
November 15, 2025 at 11:41 PM
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
November 6, 2025 at 10:39 PM
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...
November 6, 2025 at 4:11 PM
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
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...
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
November 5, 2025 at 1:22 PM
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...
November 4, 2025 at 3:06 PM
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
November 4, 2025 at 12:53 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."
November 3, 2025 at 5:55 PM