Peter N. Dudley

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.

Hey folks, here's an interesting survey inviting you to share your experiences with foxes and pine martens across the island of Ireland. 🦊🧪🌍🦤 uupredatorsurvey.com

#1 in the US baby!

Been working on an applied probability project, transforming a continuous function on the reals to probability of discrete state. And the function that solves all the desiderata is the Gibbs-Boltzmann distribution. I hate physics. It should be less useful.

European summers aren't what they used to be! Grey curve is the climate of 1950-90. Every coloured line is a summer since 1991. Every one since 2005 sits beyond the 95th percentile of the curve. This isn't a shifting #climate. It's already a new one! 🤯🥵 Plot inspired by Barriopedro et al. 2011

A new preprint introduces SI-hacking: when guest editors publish excessively in their own special issues. More than 1,000 editors SI-hacked special issues are published each year. According to the authors, #MDPI accounts for 85% of them and #Frontiers for another 13%. arxiv.org/abs/2601.07563

Costa Rica has approved a law requiring wildlife crossings in public road infrastructure where ecological connectivity is affected—bringing connectivity conservation directly into infrastructure planning and policy. delfino.cr/2026/08/asam... @fletcherecology.bsky.social

🌊 New paper in Functional Ecology: #ClimateChange is projected to favour smaller, shorter-lived, earlier-maturing and faster-growing reef #fish in the NE #Mediterranean, with increasing functional homogenization. doi.org/10.1111/1365... #MarineEcology #traits 🧪🌐🌍

I'm so happy to announce version 2.0.0 of my #Rstats package WeightIt is out on CRAN! New features: censoring weights, multilevel propensity scores, improved weights for continuous treatments, bias-reduced ordinal and multinomial models, M-estimation in subgroups Check out the website below!

More on the Trump / Kratsios "Golden Age of Science" report, from @theverge.com

i love when a press release headline sounds like it was written by an aggrieved fish

At a brewery. It's trivia night. The question was "what z word is the term for a fertilized egg?" Guy down the bar says "zembryo"

Are you a landowner? Make sure your lad has beaver inclusive practices! I love learning about topics outside of my own area of research! #NACCR2026 #wildlifeconservation

The most stressful part of my trip to ##NACCR2026 is now over. I figured out how to pay for the bus.

🥳🎊

www.latimes.com/california/s... The Trump administration rolled back the Endangered Species Act on Friday, slashing protections to the habitats of endangered species and paving the way for more drilling and mining. 🧪🌎

I submitted my comment on the dangers of finalizing the OMB rule. Have you? Tomorrow, July 13 is the deadline!

If your University's business cards suck, you can design your own. No one can stop you.

Sent off the #NACCR2026 poster for printing. Come by if you have suggestions about linking models together in a user friendly way.

Come say hi at #NACCR2026! We have some great #consocsci content going on! Don't forget to join us for the @scbsswg.bsky.social business meeting!

when you never learned the salmon life cycle

We're excited to join colleagues from across #conservation and #restoration at #NACCR2026 in Milwaukee this July! If you’re attending, we hope you'll join us at any of our 3 events to strengthen #scicomm skills, exchange ideas, and build connections. Learn more: buff.ly/CMYTtFT

Beavers play an important role in creating habitat connectivity for terrestrial mammals, and their dams are favoured over other structures. 🧪🌍

On Friday I took my *luckiest* and *most disgusting* wildlife shot so far: a California sea lion (Z. californianus) puking up a bunch of rocks! 🤮🪨 That's right - many pinnipeds use gastroliths. The gastroliths are in mid-air! 🦖🐬🦑 #nature #photography #sealion

Scientists Capture First Photo Evidence of Dwarf Island Fox Not Seen in 20 Years https://gizmodo.com/scientists-capture-first-photo-evidence-of-dwarf-island-fox-not-seen-in-20-years-2000768699

I found some cool coasters in our office supplies cabinate.

I have been collecting funky folk-art fish figurines on various trips & finally strung them together to make a reef fish mobile that reminds me of snorkeling as they spin in the breeze 🐟🐠🎏 🤿 🌊

New way to view these Data Centers that are draining the communities they implant themselves in... draining resources for slop

📢 New IMR study on movement patterns of #BaskingSharks shows that sharks tagged above the #ArcticCircle in #Norway perform repeated large-scale movements to subtropical waters and actively use the water column across habitats.🧵 1/5 👉 doi.org/10.3354/meps... @whoi.edu @thembauk.bsky.social

10 yrs after our first paper on spotted owls & “megafires”, here is the granddaddy of them all: a Wildlife Monograph. >30 yr of detection/non-detection data across >1500 territories (796 burned) and movement data from 171 GPS-tagged owls. Conclusion: big hot fire bad doi.org/10.1002/wmon...

Neat study on how the removal of fencing along the Trans-Mongolian Railway allowed Asiatic wild asses to recolonize their historic range. Now we need more permanent wildlife crossings to help these guys out. #fenceecology #roadecology www.cambridge.org/core/journal...

All works of prose, fiction or non-, could benefit from the incorporation of a sturgeon.

Happy Earth Day, everybody! (Poster by me with some NASA public domain photos)

Almost 60 percent of the lifetime diets of taimen in Russia's Tugur River is *adult chum salmon*. Imagine what a bad-ass freshwater fish you have to be to just inhale salmon like they're mayflies. conbio.onlinelibrary.wiley.com/doi/10.1111/...

Whoa 🤯 The Moon, in full eclipse, with the #Artemis II Orion spacecraft. Part of the Moon and spacecraft are lit by Earthshine, and both Saturn and Mars are visible to the lower right. Incredible. Details: images.nasa.gov/details/art0...

I got so annoyed with some of You People that I made a meme Science is not why you and your family are struggling, friends. President Trump and Congressional Republicans are the reason why you and your family are struggling.

happy #sturgeonsaturday (on sunday)! 🧪👩🏻‍🔬🌐🦑🌎 did you know that sturgeon rely heavily on scent & feel to find food rather than eyesight? in the photo you can see the barbels (like whiskers) & the 2 nostrils - which are basically the same size as the eye! these strong sniffers are quite impressive 👃

HEC-RAS 2025 is now in Beta!!! Looks like they haven't updated the site yet but if you download it you can get Beta. 🧪

happy #sturgeonsaturday ! this is the time of year that sturgeon wake up from their overwintering cuddling and move around in search of food! in the Fraser River, BC this usually aligns with the eulachon spawning run, a crucial sturgeon food source, full of fat after a long winter 🍽️ 🧪👩🏻‍🔬🌎🌐🦑🐟

🌎️🧪 Ecology, forestry, or geography students — ApexRMS is hiring a Wildfire Specialist Intern! 6-month remote role starting April 6. Deadline: March 31st. apexrms.com/careers/ #Hiring #Wildfire #Canada #Forestry #Ecology

The striped hyena is in decline. There are fewer than 10,000 left. “Yet it remains largely overlooked in global policy frameworks,” says WCS’s Sue Lieberman. 🌎 At #CMSCOP15, we are supporting a proposal for protections. bit.ly/4uPPUEC

Please soothe your soul with this footage of an enraged muppet being treated at the wild muppet center.

My late husband would have been so excited about this news! Scientists discover new heavy proton-like particle at CERN share.google/8aKm98yYU5NE...

‪ 🌳 Do you want to contribute to research on how humans perceive forests? Take this quick, anonymous 10-min survey 🌲 👉 www.biodiful.org#/forest This will help us explore how people experience forest biodiversity! Please share on 🦋 & tag @biodiful.bsky.social to reach more participants 🙏💚 🌐🌍🦤🦑🪴🍁🧪