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Dean (N7DPW) Walton

@deywalt.bsky.social
429 followers 825 following 62 posts

Ecologist : Mapper : Maker : PhD : Photographer iNaturalist www.inaturalist.org/people/deanwalt… @deptpublicworks on Instagram : University of Oregon faculty

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Reposted by Dean (N7DPW) Walton
Northwest Lichenologists (NWL) @nwlichenologists.bsky.social · 14/10/2025
Every other year NW Lichenologists meets for certification for macrolichens in the Pacific NW of North America. Two subgroups attend: those wishing for more training and those taking the certification exam. Check out the info here: northwest-lichenologists.wildapricot.org/page-1854192
northwest-lichenologists.wildapricot.org
Northwest Lichenologists - Certification
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Dean (N7DPW) Walton @deywalt.bsky.social · 13/10/2025
@nwlichenologists.bsky.social Every other year NW Lichenologists meets for certification for macrolichens in the PNW of North America. Two subgroups attend: those wishing for more training & those taking the certification. Follow> northwest-lichenologists.wildapricot.org/page-1854192
northwest-lichenologists.wildapricot.org
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Dean (N7DPW) Walton @deywalt.bsky.social · 13/10/2025
Nwlichenologists
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Dean (N7DPW) Walton @deywalt.bsky.social · 02/07/2025
So cool to see the freshwater mussel habitat model and map by Shiva Torabian from Virginia Natural Heritage Program @ Society for Conservation GIS meeting out of Joe Weber's GIS lab with VADCR #VANHP #SCGIS #SCGIS2025 #FRESHWATERMUSSELS #USFWS #NCTCWV @deepseadawn.bsky.social @scgis.bsky.social
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Reposted by Dean (N7DPW) Walton
Northwest Lichenologists (NWL) @nwlichenologists.bsky.social · 16/05/2025
Occasionally, we get to travel to the NW fringes. Recently, the Calif. Lichen Soc. forayed to San Luis Obispo. How could we not want to see that area too? So, here are few specimens from the Los Osos. Our IDs are Usnea rubicunda Heterodermia leucomelos Lecanora caesiorubella Your input on them?
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Reposted by Dean (N7DPW) Walton
Stelios Katsanevakis @skatsanevakis.bsky.social · 14/05/2025
Invasions!—a fresh newsletter on invasive alien species is out now. 🐟🌱 Get the latest on monitoring, policy, and action across Europe. Read Issue #1 here: 🔗 viewer.joomag.com/invasions-ne... #InvasiveSpecies #Biodiversity #Conservation #EUInvasives #bioinvasions #GuardIAS #Onestop 🌐🌍
viewer.joomag.com
Invasions Newsletter
safeguarding island havens. new research. management stories. policy updates.
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Dean (N7DPW) Walton @deywalt.bsky.social · 13/05/2025
Found this guy on the way back from our rafting trip through the Owyhee Wilderness. Never had a Wilson's Snipe pose for me before #birding #birds #snipe #snipehunt
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Reposted by Dean (N7DPW) Walton
SoCal Leslie @socalleslie.bsky.social · 29/04/2025
👇🏻
biologicaldiversity.org
Lawsuit Seeks Public Records on Harms to Whales, Sea Turtles, Marine Life From NOAA Mass Firings
SILVER SPRING, Md.— The Center for Biological Diversity sued the Trump administration today for failing to release public records about ocean conservation work interrupted by mass firings and layoffs ...
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Dean (N7DPW) Walton @deywalt.bsky.social · 17/04/2025
Visited our daughter down in CalPoly-SLO and had the chance to do some big and little birding, including some California condors (white-tag 86 & red 27) @PinnaclesNP plus this Curlew and willet combo at Morro Rock. Weather was awesome and included two rattlers
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Reposted by Dean (N7DPW) Walton
Northwest Lichenologists (NWL) @nwlichenologists.bsky.social · 04/04/2025
Sometimes you just need to sit back and stare at rocks, or at least the exciting things covering them like this one here with Rhizoplaca, Xanthoria, and others. -Seen in Central Oregon over the weekend, along with Umbilicaria phaea and what keys out to be U. krascheninnikovii on nearby rock. #lichen
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Dean (N7DPW) Walton @deywalt.bsky.social · 26/03/2025
It was great to hear about the history of Old-growth forests in the PNW from Jerry Franklin, and as an added treat, to see past U.S. Representative Peter DeFazio at the NW Scientific Association meeting on the UOregon campus last week. #nwsa #uoregon #peterdefazio #oldgrowth #northwestscientific
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Reposted by Dean (N7DPW) Walton
Northwest Lichenologists (NWL) @nwlichenologists.bsky.social · 25/03/2025
Nothing is more satifying than seeing the intrepid inventory work of a group of lichenologists tracking rare to even common lichens. Here we are on the Oregon coast last week looking for Erioderma, Leioderma, & Sulcaria, as well as a host of Cladonias and others. Pannaria oregonensis is shown.
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Reposted by Dean (N7DPW) Walton
Northwest Lichenologists (NWL) @nwlichenologists.bsky.social · 21/03/2025
Sometimes you hit the TRIFECTA-Lichens, rare birds, and old-growth, as the folks from Evergreen State College did during their group talk on lichens and marbled murrelets at the NW Lichenologists/Scientific Assoc. meeting talk Wednesday. Their mentor, Dr Calabria is leading the way. #lichens
Three presenters at a podium about ready to talk on their research on lichens and marbled murrelet nests.
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Reposted by Dean (N7DPW) Walton
Kaitlyn Gaynor @kaitlyngaynor.bsky.social · 21/03/2025
Hello Bluesky! Good to see you all again! Job alert: I'm looking to recruit a postdoc interested in working at the interface of AI and wildlife ecology, supported by the AI for Biodiversity Change (ABC) Global Center. Apply by April 15, 2025. gaynorlab.weebly.com/join-us.html
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taenia @taenia.bsky.social · 21/03/2025
Why are you so obsessed with Western Australia, Lee Well, you see..
A rough track of red dirt through the Western Australian bush, flanked by pink, white and yellow wildflowers A Shingleback Skink hiding in bright green grass.

This is a cream-coloref lizard with a warm brown back. It's scales are huge and slightly raised, giving it the texture of a pine cone. It has a giant, wedge-shaped head and dark eyes.An adult Pink-eared duck surrounded by three ducklings with water dripping from its bill.

The adult duck is pale brown with a striped chest and a black spot around its dark eyes. The pink spot at the back of its head is barely visible. Its bill is large, black, and downturned at the edges. The ducklings are grey and very fluffy with dark markings on their heads. Their bills are the same shape as the adult's.Book triggerplants growing out of red soil.

These are pink flowers with four lobed petals and black stems. The very center of the plant has a bright green trigger mechanism, used for depositing pollen on visiting insects.
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Reposted by Dean (N7DPW) Walton
Dr Dan Shugar 🇨🇦 @watershedlab.bsky.social · 21/03/2025
On #WorldGlacierDay, our paper in @science.org about the Sikkim glacial lake disaster has been published in its final form: 🧪⚒️❄️ www.science.org/doi/10.1126/...
science.org
The Sikkim flood of October 2023: Drivers, causes, and impacts of a multihazard cascade
On 3 October 2023, a multihazard cascade in the Sikkim Himalaya, India, was triggered by 14.7 million cubic meters of frozen lateral moraine collapsing into South Lhonak Lake. The impact generated an ...
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Reposted by Dean (N7DPW) Walton
Northwest Lichenologists (NWL) @nwlichenologists.bsky.social · 19/03/2025
The Northwest Lichenologists on the search for rare lichens in the Willamette Valley during the NWLichenologist / Northwest Scientific Association at the University of Oregon this mid-March. If you want to learn, we want your interest. #lichen #biologicalsurvey #inventory
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Reposted by Dean (N7DPW) Walton
bennythesnitch.bsky.social @bennythesnitch.bsky.social · 07/03/2025
AND HOW MUCH DID THIS COST? After the SpaceX Starship exploded mid-air, the FAA halted flights into four Florida airports until 8 PM ET. The advisory affected Miami, Fort Lauderdale, Palm Beach, and Orlando airports. The decision followed debris crashing off Florida's coast after the failed launch
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Reposted by Dean (N7DPW) Walton
Charm @charm305.bsky.social · 07/03/2025
This is not acceptable. This is VERY dangerous. Rapid Unscheduled disassembly= EXPLOSION! Air traffic halted in Florida because of space launch debris. Explosion was caught on video in Florida, Bahamas, Jamaica and Turks & Caicos. Who is doing the clean up? finance.yahoo.com/news/spacex-...
finance.yahoo.com
SpaceX's Starship explodes in space, again raining debris over Caribbean
(Reuters) -SpaceX's massive Starship spacecraft exploded in space on Thursday minutes after lifting off from Texas, prompting the FAA to halt air traffic in parts of Florida, in the second straight fa...
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Flagpie @finecuppacoffee.bsky.social · 07/03/2025
Nope, they're the Coyote.
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Shadow Sherpa @shadowsherpa.bsky.social · 07/03/2025
Someone please post a Space X sticker over this 😉
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Dean (N7DPW) Walton @deywalt.bsky.social · 25/02/2025
Very excited to see this uncommon high mountain specialist up at the highest peak in the Coastal Range of Oregon. It's a gray-crowned rosy-finch. #rosyfinch #birding #birdallianceoforegon
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Reposted by Dean (N7DPW) Walton
NOELREPORTS @noelreports.com · 24/02/2025
The best way to confront a bully about the misinformation he is spreading is to confront him in front of everyone. Macron just did that.
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Dean (N7DPW) Walton @deywalt.bsky.social · 22/02/2025
Interested in Biodiversity? Conservation? Data? Cool mapping projects? Then check out scgis.org I don't know one conference I have enjoyed more. Hope to see you in late June! #scgis #gis #qgis #esri #mapping #biogeography #biodiversity #conservation
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Dean (N7DPW) Walton @deywalt.bsky.social · 14/02/2025
An awesome day of pelagic birding last week: Ancient murrelets Black-footed albatrosses Cassin's auklets Northern fulmars And more! #birding #oregon #pelagic #birds
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Dean (N7DPW) Walton @deywalt.bsky.social · 11/02/2025
Remember this name and pass it on: VERA RUBIN
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Reposted by Dean (N7DPW) Walton
Andrea Weckerle @aweckerle.bsky.social · 23/01/2025
Privacy law expert @daniel-solove.bsky.social unpacks how tech erodes privacy, the legal system’s struggles to keep up, and dangers of big data and AI. He warns that unchecked tech design shapes our choices and freedoms. On Apple Podcasts, Spotify, YouTube. Link in comments. #Privacy #PrivacyLaw
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Dr. Dawn Wright @deepseadawn.bsky.social · 17/01/2025
#gischat
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Dean (N7DPW) Walton @deywalt.bsky.social · 17/01/2025
New from the Washington Post: "Riveting Storytelling for All of America." It's their new motto, but how much truth in their stories??? I think I will stick with the NY Times. #nytimes #wapo #news #journalism #washingtonpost
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Reposted by Dean (N7DPW) Walton
Northwest Lichenologists (NWL) @nwlichenologists.bsky.social · 16/01/2025
Annual General Meeting Eugene, Oregon: Mar 17-20, 2025 Registration is through the Northwest Scientific Association website: www.northwestscience.org The meeting has talks, a workshop, and one or more field trips. Schedule and summary of lichen activities for the meeting will be posted there.
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Rory Gibb @roryjgibb.bsky.social · 15/01/2025
How are pathogens and parasites responding to planetary change, what does this mean for people and biodiversity, and what is to be done? New @viralemergence.org synthesis out today in Nature Rev Biodiversity (@natrevbiodiv.bsky.social) with a fantastic author team🧪😷 www.nature.com/articles/s44...
nature.com
Pathogens and planetary change - Nature Reviews Biodiversity
This Review explores the relationship between emerging infectious diseases and biodiversity loss, and how both are connected to global environmental changes in the Anthropocene.
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Dean (N7DPW) Walton @deywalt.bsky.social · 10/01/2025
I fly UAS for the UofO, this is bad news. I am glad it didn't cause the plane to crash, injure the crew, and/or start another horrific fire.
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Reposted by Dean (N7DPW) Walton
British Ornithologists’ Union (BOU) @bou.org.uk · 10/01/2025
DNA metabarcoding of stomach contents shows predation impacts of black rats on island birds after a resource pulse are driven by numerical not functional response | link.springer.com/ar... | Biological Invasions | #ornithology 🪶
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Dean (N7DPW) Walton @deywalt.bsky.social · 09/01/2025
For all my Mid-Atlantic ecology and botany peeps, this is a really cool vegetative history of one rare community type in an area loosely near where I used to work. It's a free download from PLoS journals.plos.org/plosone/arti...
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Reposted by Dean (N7DPW) Walton
Katharine Hayhoe @katharinehayhoe.com · 08/01/2025
As climate change increases the risk of dry conditions and fire weather, fires across western NAm are bigger, more dangerous, and burning greater area. It’s the difference between accidentally dropping a match into a pile of green, wet wood versus dropping it into a stack of bone dry kindling.
A pie chart showing the area burned by the 20 largest wildfires on record from 1900 through 2021 in California.
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Cecile Gubry-Rangin @micecoevo.bsky.social · 17/12/2024
Excited to share our new study in @ismepublications.bsky.social showing that microbial niche breadth specialisation (being a generalist or a specialist) impacts ecological and evolutionary adaptation following environmental change doi.org/10.1093/isme...
doi.org
Niche breadth specialization impacts ecological and evolutionary adaptation following environmental change
Abstract. Ecological theory predicts that organismal distribution and abundance depend on the ability to adapt to environmental change. It also predicts th
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Jhan C. Salazar, PhD @jhancsalazar.bsky.social · 06/01/2025
First-time presenting a poster at a conference: done! Thank you to everyone who stopped by and asked such interesting questions. If you missed it, you can find more information here: github.com/salazarjhan9... #SICB2025
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Reposted by Dean (N7DPW) Walton
Dr Mark E Hauber @thecowbirdlab.bsky.social · 06/01/2025
www.science.org/doi/10.1126/...
science.org
Culturally determined interspecies communication between humans and honeyguides
Honeyguide birds understand culturally varying signals used by human honey hunters, leading to different cultures of interspecies cooperation.
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Dean (N7DPW) Walton @deywalt.bsky.social · 04/01/2025
My two favorite PNW sightings of the last year were of marbled and ancient murrelets, but the photos were bad. So, here's a better photo of something being monitored in Oregon. I hope you like this pika I spotted in Casacade Range back in October.
A pika stares out from a talus slope in the Casacade range of Oregon.
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Reposted by Dean (N7DPW) Walton
Eric Schuettpelz @ferncurator.bsky.social · 03/01/2025
Travel awards (up to $5,000) are available to support the study of collections in the United States National Herbarium. Applications are due on 15 January: naturalhistory.si.edu/research/bot...
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Peter Stefanovic @peterstefanovic.bsky.social · 03/01/2025
It will come as no surprise to anyone that Elon Musk and X are the biggest purveyors of online misinformation www.rollingstone.com/culture/cult...
rollingstone.com
How Elon Musk and X Became the Biggest Purveyors of Online Misinformation
A timeline of how Elon Musk has turned X into a misinformation weapon that spews falsehoods about migrants, gender, health and elections.
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Dr Luis Huckstadt @luishuckstadt.bsky.social · 03/01/2025
Happy New Year! And what a better way to celebrate than by admiring how cool these tracks of grey seal pups’ movements are! 🦭🦑🌎 More pups will be tagged soon! @exetermarine.bsky.social @uniexecec.bsky.social
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Dean (N7DPW) Walton @deywalt.bsky.social · 02/01/2025
We have had a lot of rain recently, and it has made hiking a bit more challenging but still rewarding. Fluted elfin saddle (Helvella) Common bonnet (Mycena) Funeral bell (Galerina!)
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@amybisinthewoods.bsky.social 🍄🍄‍🟫 @amybdogsandfungi.bsky.social · 01/01/2025
Coolest find of 2024 has to be this blue Physarum slime mold. Still can’t get over it. #slimemold #fungifriends #fungi #naturephotography
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Jascha Polet @jascha.bsky.social · 01/01/2025
New paper on magnetotelluric modeling of Yellowstone caldera: “We find that rhyolitic melts are stored in segregated regions beneath the caldera with low melt fractions, indicating that the reservoirs are not eruptible.” ⚒️🧪🌋 www.nature.com/articles/s41...
Summary of Yellowstone volcanic system resistivity model.
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Dean (N7DPW) Walton @deywalt.bsky.social · 31/12/2024
I was recently asked within my photography group to submit my best pic of there year. My favorite was of the aurora, but I chose this one as my best. Flickr seemed to agree. www.flickr.com/photos/wolfr...
flickr.com
Howdy!
Somehow managed to hit the big-time with this one getting picked for Flickr's Explore interesting photos of the day set. A Myrtle warbler from the Willamette River near the UO campus.
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Reposted by Dean (N7DPW) Walton
Stelios Katsanevakis @skatsanevakis.bsky.social · 24/12/2024
Just published: we introduce three metrics (s-core, Louvain clustering, walktrap clustering) to improve the integration of ecological #connectivity in #conservation prioritization. Implementation: priorCON: cran.r-project.org/web/packages... besjournals.onlinelibrary.wiley.com/doi/10.1111/... 🌍🌐🧪
besjournals.onlinelibrary.wiley.com
Spatial conservation planning: Proposing clustering methods to improve connectivity protection
Spatial conservation prioritization is traditionally focusing on ensuring the representation of species populations and habitats within protected areas. Recently there has been an increased intere...
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Ferwen @ferwen.bsky.social · 29/12/2024
Annie Montague Alexander, naturalist & fossil hunter, was born #OTD in 1867. She co-founded the museum of natural history of the University of California and the Museum of Vertebrate Zoology. wp.me/p3ihHu-1MU #WomeninSTEM #histsci 🧪⚒️
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