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Zach

@zcnem.bsky.social
157 followers 177 following 344 posts

coastal hazards & watershed health, Philly-based, mostly thinking about trash, fish, and trash fish, rust belt offspring, views = mine, he/him

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Zach @zcnem.bsky.social · 17h
A few years later, looks like minimal invasive plants and still wet due to summer and fall rains
Wooded vernal pool with water, lot of woody debris surrounding or within pool, leaves starting to change
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Titus Seilheimer @drfishsg.bsky.social · 22h
The first documentation of lake sturgeon feeding excavations #GreatLakes 🧪 www.sciencedirect.com/science/arti...
Fig. 3. Examples of lake sturgeon feeding excavations found in Lake St. Clair.
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Zach @zcnem.bsky.social · 19h
This is awesome. On theme/topic, there is a tinned fish brand that is starting to use Fishmas in their advertising and I’m like “hey, now!”
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Zach @zcnem.bsky.social · 14/10/2026
Thanks, yeah I was thinking how deer and voles impact riparian buffers and geese are a nuisance for reseeding coastal areas with native seed (all native tho) so I was just curious. Cool research and congrats to your student!
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American Fisheries Society @amfisheriessoc.bsky.social · 14/10/2026
Too early? Never! Plan for Pittsburgh and save these important dates as we gear up for the 157th AFS Annual Meeting, September 26–30, 2027! 📍 Pittsburgh, PA 📆September 26-30, 2027 🔗 www.fisheries.org/
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Zach @zcnem.bsky.social · 13/10/2026
It’s interesting to see arrow arum seeds in the abstract, I wonder if there is any implications with living shoreline installations.
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Noah Bressman, PhD @noahwithfish.bsky.social · 13/10/2026
My first MS student, Zach Crum, just had his thesis work published on Diet and Trophic Ecology of Invasive Blue Catfish in an Eastern Shore Tributary of the Chesapeake Bay. It's open access, so check it out it: www.mdpi.com/4130188 (1/2)🦈🐟🐙
mdpi.com
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Christina Toms @christinatoms.bsky.social · 13/10/2026
for the millionth time: THE SOPRANOS EPISODE “THE PINE BARRENS” WAS NOT FILMED IN THE PINE BARRENS THE TOPOGRAPHY AND VEGETATION ARE COMPLETELY WRONG
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Katie O'Reilly @drkatfish.bsky.social · 12/10/2026
Arctic grayling haven't been found in Michigan for nearly a century, and now tribes are raising the species for reintroduction. No released fish have been seen in the wild yet, but it may take several years to tell if reintroduction has been successful www.interlochenpublicradio.org/ipr-news/202...
interlochenpublicradio.org
A year into reintroduction, no grayling seen in Michigan wild. Hope remains
Northern Michigan tribes are releasing Arctic grayling for the second year in a row, in hopes of restoring the native freshwater species. Questions remain about how many have already survived and how ...
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Dr. Kat Napaaqtuk❄️ @napaaqtuk.bsky.social · 12/10/2026
Happy Indigenous People's Day! We are still here :)
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Nick in NC @nicknc.bsky.social · 11/10/2026
Marbled Madness!!! Lots of Ambystoma opacum out tonight. I love how each marbled salamander has its own unique pattern of black and silver markings. #herps.
A chubby black and silver salamander in a small puddle.
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Titus Seilheimer @drfishsg.bsky.social · 08/10/2026
New Ask Dr Fish dropped this week. Give it a listen, ask us a question. www.askdrfish.com/12 @drkatfish.bsky.social @ilinseagrant.bsky.social
askdrfish.com
Ask Dr. Fish | Their Mouth Writing Is Terrible
We ask our Drs Fish about "zombie fish," fishes of spring, fish intelligence, and fishes' environmental sensitivities. Walpole Island students raising lake sturgeon "Saving Our Sturgeon" Teach Me A...
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Zach @zcnem.bsky.social · 08/10/2026
I got to see their propagation setup this summer
Two small fish with spots starring at me in a tank filled with a sandy rocky bottom and a pvc pipe
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Zach @zcnem.bsky.social · 08/10/2026
Chesapeake Bay logperch update www.bayjournal.com/news/wildlif...
bayjournal.com
Chesapeake Bay logperch are recovering, feds say
Populations of a small darter species found only in the lower Susquehanna River have rebounded enough not to warrant protections under the Endangered Species Act, according to a federal review
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Andrew Rypel @andrewrypel.bsky.social · 07/10/2026
🚨 New paper led by grad student Alex Ginez! So many native fishes are still labeled as “rough fish” and given no management attention, and often unlimited harvest - still! But are these fishes actually capable of sustaining high harvest? academic.oup.com/fisheries/ad... A thread on the study 🧵👇
academic.oup.com
Smoothing over “rough” mismanagement: Establishing protective harvest limits for native nongame fishes
Abstract. There is growing interest in establishing more protective regulations for native fishes that historically have been classified as “rough fish,” a
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Zach @zcnem.bsky.social · 07/10/2026
Just got back from a few days on the Eastern shore, nice to unplug for a bit
Horse in a salt marshGhost pipes coming out of ground Monarch butterfly on plant

Great blue heron in marsh
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Zach @zcnem.bsky.social · 01/10/2026
I remember folks collecting them in Arizona and calling them camarones
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Dr. Sam Anderson @sam-science.bsky.social · 01/10/2026
Happy new water-year! Welcome to hydrological 2027!
Mountains reflect on Widgeon CreekBraided streams on Devon Island, NU.Copper Island on Shuswap LakeReflections on Duffy Lake
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Joe Mason @moreorloess.bsky.social · 01/10/2026
Always worth listening to Ellen Wohl, especially about rivers. blog.oup.com/2018/10/50th...
blog.oup.com
Of gutters and ecosystems: the 50th anniversary of the Wild and Scenic Rivers Act
“Rivers are the gutters down which flow the ruins of continents.” – Luna B. Leopold Luna Leopold understood that rivers are far more than gutters. In a
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Zach @zcnem.bsky.social · 01/10/2026
But it’s hard too with researchers’ schedules being limited during the school year and cost of conferences are increasing (travel and registration) - I don’t blame them that they choose where other researchers go (professional societies/meetings) to discuss the science.
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Zach @zcnem.bsky.social · 01/10/2026
Probably at professional societies/meetings which I understand but being at these local conferences a) gets the word out on their research b) builds better relationships/connections with local practitioners which can help their students in the long term (employment) c) practical application of work
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Zach @zcnem.bsky.social · 01/10/2026
It’s like grants, engagement, and plans - oh my but where is the research and researchers🤔
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Zach @zcnem.bsky.social · 01/10/2026
It was a relief when folks told me to email it to them - I feel like there is an ongoing disconnect between the ecological research and environmental/restoration practitioners.
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Zach @zcnem.bsky.social · 01/10/2026
Was at a local conference the past two days and I was telling people about this article like I was a newspaper hawker
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John F Tollefson @jftollefson.bsky.social · 27/09/2026
Day 26 - #quill A Quillback (Carpoides cyprinus). A medium-sized sucker that inhabits local rivers with gravel/sandy bottoms. If anyone has a good tutorial on doing scales…I generally avoid them like the plague, as you can see why here. #SciArtSeptember #SundayFishSketch #fishart #watercolor
Watercolor and ink illustration of a fish with a long quill-like dorsal fin. Side-view, facing right
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David Shiffman, Ph.D. 🦈 @whysharksmatter.bsky.social · 26/09/2026
“Fish” can be both singular (one individual fish) or plural (multiple fish of the same species.) “Fishes” refers to individuals of different species. 🐟 Fish 🐟🐟🐟 Fish 🐠🐟🐡 Fishes Now you know, and knowing is half the battle.
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Saunieindiego @saunieindiego.bsky.social · 25/09/2026
Comments due TODAY! Please Speak out for fishies that USFWS wants to delist. There's probably a mine or other awful thing the orange turd wants to grant permission to, that wants to open up, and they can't grant lease while endangered species exist!
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Katie O'Reilly @drkatfish.bsky.social · 23/09/2026
Cleveland Rocks (if you're a baby sturgeon): Before juvenile lake sturgeon were released into the Cuyahoga River last year, they received tiny acoustic transmitters - now, early data shows that many are sticking close to Cleveland Harbor. signalcleveland.org/lake-erie-ba...
signalcleveland.org
Lake Erie’s baby sturgeon are thriving a year after release - Signal Cleveland
Ahead of Saturday's Sturgeon Fest, we checked in on the little babies released last year. How are they doing? Early signs are promising.
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Ben Goldfarb @bengoldfarb.bsky.social · 22/09/2026
The dam removals that get the most press tend to be superlative western ones, like the Klamath and Elwha—big rivers, big fish. For @biographic.bsky.social, I wrote about some equally vital, under-the-radar projects now restoring eastern streams, one old mill dam at a time. #AlewivesAreTheNewSalmon
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Zach @zcnem.bsky.social · 22/09/2026
A hi-vis morning one might say
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Zach @zcnem.bsky.social · 22/09/2026
A great way to kick off the fall season is with 50+ public works folks in a room talking about smart salting strategies
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Sarah McAnulty, Ph.D. @sarahmackattack.bsky.social · 22/09/2026
Happy first day of fall!! Did you know that fall is, perhaps counterintuitively, a great time to plant things? It gives the plant time to establish their roots in the soil so that next spring they can shoot out of the soil confident in the ground they’re in. Be a good witch and cast summon bug 🪲
An absolutely caked up toad with a big ol belly and his hand on his hip, wearing a wobbly
Old witches hat and holding a glowing flower says “feelin witchy? Cast summon bug! With an asterisk and the asterisk says grow native plants
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Katie O'Reilly @drkatfish.bsky.social · 21/09/2026
Move over, Salmon Cannon, it's Sturgeon Elevator's time to shine www.mlive.com/environment/...
mlive.com
Watch lake sturgeon ride an elevator at an Upper Peninsula hydroelectric dam
A fish elevator in Michigan is helping save one of the Great Lakes’ most ancient species from extinction.
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Zach @zcnem.bsky.social · 21/09/2026
What it looks like on a Zoom call first thing on a Monday morning
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Zach @zcnem.bsky.social · 20/09/2026
Food was on point too
Pierogis and stuff cabbage Pastry filled with cherry filling
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Zach @zcnem.bsky.social · 20/09/2026
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Zach @zcnem.bsky.social · 20/09/2026
Slavic bazaar in the neighborhood
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Arlyssa D. Becenti ✍️🗞️ @abecenti.bsky.social · 20/09/2026
From me: Diné NAU professor maps safe drinking water on the Navajo Nation
azcentral.com
Diné NAU professor maps safe drinking water on the Navajo Nation
Jani Ingram set out to find water sources on the Navajo Nation that are safe to drink, and the result is an interactive map.
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Marc Peipoch @marcpeipoch.bsky.social · 18/09/2026
We tested Reynolds model for algae growth in the water column of mid-size rivers. Would love to do this again in a greener river. esajournals.onlinelibrary.wiley.com/doi/10.1002/...
esajournals.onlinelibrary.wiley.com
Growth, transport, and recruitment of phytoplankton in a mid‐order river
Phytoplankton dynamics in rivers have long challenged growth models, which predict limited biomass accumulation due to insufficient water residence times—yet phytoplankton populations often persist d...
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Dr. Solomon David @solomonrdavid.bsky.social · 17/09/2026
Unfortunately, media has taken the upper bound of one model estimate (among many) and run with it to say Lake Sturgeon *could* live for over 400 years. This isn’t necessarily what the science says, and methods used are somewhat tenuous. Several other fish aging experts agree it’s an overestimate.
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Zach @zcnem.bsky.social · 18/09/2026
Let your voice be heard by emailing preservation@phila.gov
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Michigan Sea Grant @miseagrant.bsky.social · 17/09/2026
Yesterday rocked! Ext Educator Lauren Stigers came to talk about aquaculture at the NOAA Great Lakes Environmental Research Lab in Ann Arbor. After the talk, a grilled rainbow trout lunch from Spring Valley Trout Farm near Dexter. Thanks to all who came to learn and enjoy fresh MI fish with us!
A row of staff from Spring Valley Trout Farm, wearing aprons and standing under a tent with cooking equipmentA blue ceramic plate filled with caesar salad, pasta salad, a brownie, and a fillet of grilled rainbow troutLauren Stigers stands at the front of a lecture hall
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Zach @zcnem.bsky.social · 18/09/2026
Haring was raised in Kutztown which for awhile had a folk festival including hex signs, I’m curious if hex signs were influential to his iconic style en.wikipedia.org/wiki/Hex_sign
en.wikipedia.org
Hex sign - Wikipedia
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Zach @zcnem.bsky.social · 18/09/2026
More info on the story in link below 👇 whyy.org/articles/kei...
whyy.org
A rare Keith Haring mural is close to making preservation history in Philly
The Point Breeze artwork remains where Haring painted it with students in 1987, making it his only surviving outdoor mural in the city.
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Zach @zcnem.bsky.social · 18/09/2026
Haring made this mural with youth in 1987 en.wikipedia.org/wiki/We_the_...
en.wikipedia.org
We the Youth (Keith Haring) - Wikipedia
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Zach @zcnem.bsky.social · 18/09/2026
My favorite Philly mural (Keith Haring’s We the Youth) might be the first mural to be a part of the city’s register of historic places.
Keith Haring’s We the Youth mural depicting his iconic style of human outlines in various color and patterns
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Titus Seilheimer @drfishsg.bsky.social · 18/09/2026
How is fish treated and managed both as a food and a natural resource in the #GreatLakes? It's complicated! www.frontiersin.org/journals/sus... Our new paper digs into the topic. 🧪
frontiersin.org
Frontiers | The complexity of fish as food and a natural resource in the U.S. Great Lakes region
The Great Lakes region contains more than 20% of the world’s surface freshwater and supports a culturally, economically, and ecologically significant seafood...
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Zach @zcnem.bsky.social · 17/09/2026
Second-largest dam to ever be removed in Pennsylvania
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Zach @zcnem.bsky.social · 17/09/2026
Woohoo!🎉
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Zach @zcnem.bsky.social · 16/09/2026
First, state-approved beaver dam analog (BDA) in Pennsylvania article just dropped🦫🦫🦫 doi.org/10.1029/2025...
doi.org
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