Justin Pomeranz

Pleased to announce that we are looking for a post-doc to join @wesnerlab.bsky.social to study the relationship between body size, temperature and nutrients in stream ecosystems. Position details can be found here: yourfuture.sdbor.edu/postings/45969
Happy to answer any questions!

A tiny arachnid with a gold body and brick-reddish claws. It is standing on bark that looks like rough sandpaper.

Pseudoscorpions are small arachnids that are often overlooked. They prey on clothes moth larvae, carpet beetle larvae, booklice, ants, mites, and small flies. Pseudoscorpions will sometimes hitch rides to new locations on other insects. #Arachtober

Geo sciences at CMU is looking to fill TWO positions!

coloradomesa.csod.com/ux/ats/caree...

Career Site share.google/Mw8WKDznOOKg...

I know exactly what I want to say, so writing this MS report will be quick.

... 4 hours and 2 R simulations later...

Report submitted ✅

I think they generally are intrigued by it and find the documentary to be entertaining and informative. Although, I show this to my freshman-level class and it can sometimes be hard to tell what's going through their heads! 😂

I show the PBS "Serengeti Rules" documentary, which strongly features Jim Estes's research, to my intro class every semester. Sad to hear of his passing.

A macro photo, side angle, of an insect called a mantidfly, facing down and to the right, on top of a piece of wood dappled with yellow and green lichens. The background is out of focus blue sky and greenery. The insect is overall a mix of dark and light brown/tan, with large, round, rainbow-green compound eyes. It's a long, thin insect, with mantis-like raptorial forelegs, clear lacewing-like wings folded along its back, and giraffe-neck-like extension of the thorax. Overall, it looks like a mashup of a mantis and a lacewing, hence the common name.

🐙🌿 An awesome little insect I found recently in Montana. It's a mantidfly/mantisfly, which is neither a mantis nor a fly. It's in the family Mantispidae, order Neuroptera along with lacewings, antlions, and owlflies. I think this one is Dicromantispa sayi. Adults are predators, and larvae of some--

Strava map of a run near Ouray, Colorado

No views from today's trail run, but I scoped out the last unknown-to-me section for my next race #Ouray50. Just 21 more days to prep and rest before embarking on what is most likely going to be an absolute type 2 #sufferFest. Psyched.

two men are fighting over a computer monitor and the words `` the files are in the computer '' are visible . Alt: two men are fighting over a computer monitor and the words `` the files are in the computer '' are visible .

I know I just shouldn't make movie references in my courses, but the absolute 🦗 response my R-coding class gave to my Zoolander "the files are in the computer" joke today was absolutely soul-crushing. #academicChatter #higherEd

I had no idea and didn't expect it, but I'm starting to realize this is true.

#academicChatter #academicSky

Glacier Outburst Floods: Mendenhall Glacier Every year since 2011, Juneau, Alaska, has been impacted by a unique type of flood that can only occur near places with glaciers.

If you're a storymap kind of person, here's one that nicely explains what's happening & why with the glacial lake outburst flooding now underway on the Mendenhall River near Juneau. #akwx #ClimateChange #Flood #Glacier @spiraledu.bsky.social @alaska.bsky.social

storymaps.arcgis.com/stories/72ce...

One unexpected enjoyment of teaching is observing students mature both academically and socially. I've now been in my position long enough that I'm starting to get folks in my senior-level classes that I first had 4 years ago in my freshman classes. The difference can be like night and day.

Selfie of a man wearing an orange vest under a rain jacket with the hood up next to a mountain stream. In the stream, there is another person using a Hess sampler to collect benthic macroinvertebrates.

✌️I'm Justin, an assistant
professor of Env. Sci. @ CO Mesa U.

These days I mostly teach, but my research is on stream communities, focusing on food webs and body size distributions (aka size spectra, individual size distributions).

Requested this from my interlibrary loan; looking forward to digging into it.

Aerial view of a mountain town from a lookout point approximately 10,000 feet above sea level.

Colorado #trailRunning views

Classes started today and my throat is on fire; I probably talked more today than I did all summer.

Mountain landscape with dramatic lighting in a partly cloudy sky and a distinct, dark, rock feature on the right side. The feature is known locally as the "lizard head", but I don't really think it looks reptilian.

Views from the trail. #trailRunning

Why Are Rabbits Sprouting Tentacles? Rabbits spotted with hornlike growths on their face in northern Colorado are doing better than they look

Could this be the origin of the mythical jackalope??

I wonder if frontier-stories of infected rabbits got exaggerated to stories of jack rabbits with deer-like antlers...

www.scientificamerican.com/article/why-...

Night sight image of a campground with a full moon over a backlit mountain ridge.

Over exposed image of a full moon setting over a desert landscape illuminated by twilight.

Campers sitting in front of a desert hill with a wildfire color-enhanced sunset.

Part of a map of a 50 mile run near Moab and Castle Valley Utah.

Last Saturday, I had the privilege of waking up in the dark, watching the moon set over Moab, the sun rise over Castle Valley, feeling the wind rip at 12,000 feet, and was back in camp to watch the peaks alight with alpenglow.
In between, I ran 50 miles and climbed >11k ft.
Great day. #trailRunning

They also have really nice and vibrant orange spots on the wings but I couldn't quite get the angle.

*State insect

Purple and black butterfly on gamble oak leaves.

Saw a Colorado Hairstreak (Hypaurotis crysalus) today on its host plant (Gamble oak, Quercus gambelii). This is Colorado's official state butterfly!

Happy #Hardrock100 to all who celebrate! This is old news but it was SO. SMOKEY. In the San Juans this morning. Glad it's cleared up for the runners and I'm blown away to hear that Katy Schide (as of 15 hours elapsed race time) is almost an hour ahead of Courtney Dauwalter's (🐐) course record pace 🤯

a dragonfly perched on a hand wearing pink nailpolish

Do you fish in freshwater? Please share or/and complete our survey gathering data on observations of insects for our study on aquatic insect population declines! The link to our survey is here: www.surveymonkey.com/r/VXLMY89. Please share if you know anyone who might be interested in participating!

YouTube video by Western States 100 Western States 2025 Live Stream

The 2025 Western States 100 has started:
Live coverage, via Youtube: m.youtube.com/watch?v=ehpq...

#running #wser #westernstates100 #westernstates2025 #ultrarunning #trailrunning

YouTube video by Kilian Jornet What Normal People Do | Western States 15 Years Later (Part II)

I am so excited for #westernStates100 #ws100 tomorrow. Can't wait to watch who starts crossing the line in about 24 hours from now 🤠🏃🤙
youtu.be/WHA8gO_A_gc?...

Map of a mountain run showing numerous segments with new personal records.

Screen shot from Strava with the following statistics: distance = 10.06 miles; elevation gain= 4,525 feet; moving time = 2:27:38; average pace = 14:40 minutes per mile; average grade adjusted pace = 9:29 minutes per mile.

Selfie of a runner at the top of a feature near Ouray, Colorado named "the bridge of heaven". The background shows craggy peaks with limited remaining snowfields.

Fantastic day of #trailRunning today. I don't have a ton of efforts on this local beast of a run, but I was able to shave off over 40 minutes on my previous PR. Incredible what nearly a year of consistent, structured training can do. If only I'd started earlier!

Poster advertising the Headwaters Leadership Academy. The Headwaters Leadership Academy mission is to build a pipeline for emerging leaders by forming a network of early career freshwater scientists and providing mentorship, service, and professional development opportunities beyond the typical training offered in traditional academic setings. Apply by Monday, June 30th, 2025

Don't forget to apply for the Headwaters Leadership Academy by Monday!

Finally started Welcome to Wrexham S4 last night. I never thought a documentary about football would make me cry, and I never in a million years thought a documentary about football would make me almost cry multiple times per episode. I don't know what it is but it really kicks me straight in the 🩷.