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ericrlarson.bsky.social
Associate professor in freshwater ecology, University of Illinois at Urbana-Champaign. Crayfish, invasive species, environmental DNA, and more. https://publish.illinois.edu/erlarson/
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Some amazing images of a stump from a forest that is estimated to have grown ~8000 yrs ago, from 40 ft below the surface of Lake Superior. Pics by Great Lakes (shipwreck) diver Chris Roxburgh, from FB.

submitted 3 days ago • 1 comment

Wyoming deer are heading to the high country, some will travel up to 150 miles. Amazing - and necessary - movements across vast swaths of YOUR public lands. Follow along for weekly updates!

submitted 3 days ago • 0 comments

The last stand of Wensleydale's crayfish? A brief, not entirely natural history of White-clawed Crayfish in the River Ure as extinction looms. www.luct.org.uk/blog/2025/3/...

submitted 97 days ago • 0 comments

Enjoyed this opportunity to talk about our newly described Pacifastacus crayfishes from western North America yesterday

submitted 10 days ago • 0 comments

Not a bad conference location when you can encounter a manatee just down the road from the convention center #2025SFS

submitted 25 days ago • 1 comment

Visiting a new place (San Juan, Puerto Rico) for my favorite conference (Society for Freshwater Science) #2025SFS

submitted 27 days ago • 0 comments

US conservation science is at serious risk. Join a virtual rally May 22 (12–1pm ET) to defend the USGS Ecosystems Mission Area—vital for tracking wildlife, disease, ecosystems & biodiversity. Featuring Drew Lanham & Kenn Kaufman. It’s free, it’s virtual, it’s vital. www.mobilize.us/nwf/event/79...

submitted 29 days ago • 0 comments

BioTime v2 is out!!🚨 - Explore the largest #database of #biodiversity time-series studies in the world. Now with more studies🗄️🔍👩‍💻, more species 🌱🦎🦇🐟🌳🐜🐚🪸🐀, more locations 🌐…just more! onlinelibrary.wiley.com/doi/10.1111/... Free to download, free to use! #BioTime #Macroecology #GlobalChange

submitted 30 days ago • 1 comment

The definitive work on Chicago area fishes is out, my Sunday column. chicago.suntimes.com/outdoors/202...

submitted 35 days ago • 2 comments

This work originated, 18 years ago, with an NSF East Asia and Pacific Summer Institute (EAPSI) fellowship when I was a PhD student. EAPSI was a small award ($5k) to foster international collaborations, that involved spending 10 weeks in a host country with a mentor. #WithoutNSF #SaveNSF

submitted 36 days ago • 2 comments

The result of nearly two decades of work, my coauthors and I have just described two new crayfish species from western North America: introducing the Misfortunate Crayfish and Okanagan Crayfish (doi.org/10.11646/zoo...). More to follow soon, but it should be open access - message if you need a PDF.

submitted 37 days ago • 5 comments

It is hard to imagine a world without the USGS Ecosystems Mission, the bird banding lab, the Coop Unit program, etc. but apparently that is what America voted for and what this administration plans to do: wildlife.org/usgs-cuts-wo...

submitted 42 days ago • 0 comments

The first paper from my PhD is now out in @aslo.org Limnology and Oceanography Letters! We used nine years of daily temp and chl data from Peter, Paul, and Tuesday Lakes to show that aquatic heatwaves increased surface chlorophyll concentrations during 24 out of 29 events. doi.org/10.1002/lol2...

submitted 44 days ago • 2 comments

Sunrise on the Sangamon River, Illinois

submitted 79 days ago • 2 comments

Just stumbled across this, another solid paper from the Kelly lab! Great to see work like this on making eDNA interpretation more accessible to end-users besjournals.onlinelibrary.wiley.com/doi/10.1111/...

submitted 80 days ago • 0 comments

New freshwater #crayfish species from northern Tasmania! Engaeus excavator (Richardson 2025). It excavates very deep burrows (>2 m) in clay soils. Called “excavator”, because of its burrowing ability and the requirement to survey with an excavator!

submitted 95 days ago • 1 comment

Are crayfish native to upper Columbia River tributaries of the United States? Hamp Kennedy and Susie Adams of the US Forest Service apply primary historical sources and indigenous knowledge to cryptogenic species in a new paper at WIREs Water: wires.onlinelibrary.wiley.com/doi/full/10....

submitted 101 days ago • 0 comments

Hey C-U folks: it's Orange and Blue week at UIUC, and you can support a huge number of great initiatives on campus. I'm partial to the Writers Workshop (payment.giving.illinois.edu/schools/Univ...), but all campaigns here: payment.giving.illinois.edu/orange-and-b....

submitted 102 days ago • 0 comments

This week is #InvasiveSpeciesWeek! It’s a little late in the week but I will be running a sale on my invasive species sticker until next Thursday! #InvasiveSpecies #Conservation #Ecology 👩🏻‍🔬🌿🌎

submitted 107 days ago • 1 comment

Please help spread the word. Open tech position. My lab at Loyola University Chicago. www.careers.luc.edu/postings/31037 A project to improve eDNA resources and use eDNA to study fish diversity in Illinois's Fox River. @danielbolnick.bsky.social @ambikamath.bsky.social @ericrlarson.bsky.social

submitted 107 days ago • 0 comments

For the right person, this is a unicorn dream job. 🧪🌎 www.linkedin.com/posts/north-...

submitted 108 days ago • 3 comments

Can a new DNA test save the world’s rarest turtle?

submitted 109 days ago • 1 comment

We're hiring! Come work at UIUC! Assistant Professor in Molecular Epidemiology Tenure-track, 9 month position Closing date March 21 illinois.csod.com/ux/ats/caree...

submitted 115 days ago • 1 comment

It has been cold in Illinois the last few weeks, but that has kept one of our study sites awfully pretty

submitted 140 days ago • 2 comments