Titus Seilheimer
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drfishsg.bsky.social
Titus Seilheimer
@drfishsg.bsky.social
2.9K followers 2K following 2.6K posts
Aquatic ecology & Fisheries with Wisconsin Sea Grant. Science Communication. Helping improve the Great Lakes since 2001. #Freshwater, #Fish, #GreatLakes! He/Him. Manitowoc, WI go.wisc.edu/j0c989
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drfishsg.bsky.social
Titus Seilheimer @drfishsg.bsky.social · Nov 8
Welcome new Bluesky folks!

I'm Titus, an aquatic ecologist and fisheries specialist with Wisconsin Sea Grant. I work on all things #GreatLakes and freshwater from teaching 6th graders on a beach, surveying fish in a coastal wetland, or getting seasick on a commercial fishing boat!
🧪
Bearded old guy in a canoe (he looks tired) with a big handful freshly harvested wild rice. Headshot (yikes) of male with graying beard, it was once all reddish, and a receding hairline but he's smiling because he is in a Great Lakes coastal wetland! Man in waders with a sledgehammer. Is that the Dr Fish mobile? Sure it. A red and black checked flannel? Seriously? Looks like he's ready to install a sucker monitoring station in Silver Creek, Manitowoc, WI. Live cooking demo? Why not, this is what you trained for as a scientist! The chefs show off their dishes, a smoked salmon candy salad on the left from the bearded guy and some sizzling salmon in a pan from colleague Sharon Moen. The chefs look very stylish in their Eat Wisconsin Fish aprons! Check out eatwisconsinfish.org
drfishsg.bsky.social
Alongshore transport gradients at Long Point in Lake Erie

#GreatLakes 🧪

www.sciencedirect.com/science/arti...
Alongshore transport gradients at Long Point in Lake Erie
The evolution and future resiliency of Long Point, a barrier spit on the north shore of Lake Erie, is associated with the eastward alongshore transpor…
www.sciencedirect.com
January 9, 2026 at 9:04 PM
drfishsg.bsky.social
Fat content and condition factor explain levels of dioxins and PCBs in whitefish (Coregonus sp.) from Sweden’s major lakes

🧪

www.sciencedirect.com/science/arti...
Fat content and condition factor explain levels of dioxins and PCBs in whitefish (Coregonus sp.) from Sweden’s major lakes
Whitefish (Coregonus sp.) are an ecologically and economically important species in large, temperate lake ecosystems, including North America’s Lauren…
www.sciencedirect.com
January 9, 2026 at 9:03 PM
Reposted by Titus Seilheimer
oldenfish.bsky.social
National assessment of river protection in the U.S.

Article: doi.org/10.1038/s418...
Policy Brief: doi.org/10.1038/s418...
Rivers Explorer: map.myriver.americanrivers.org

Collaboration b/t American Rivers, Conservation Science Partners, Univ WA @americanrivers.bsky.social

Thread 👇 | DM for PDF
Image of river protection status in the United States
January 9, 2026 at 6:18 PM
Reposted by Titus Seilheimer
uwiscseagrant.bsky.social
Bird lovers, this one's for you. 🦅

The latest Chronicle profiles the work of the Great Lakes Eagle Health Project, which is investigating how PFAS impact the health of bald eagles. Learn how the team finds eagles, scales trees, and takes blood samples.

https://chronicle.aqua.wisc.edu/
The cover of the ASC Chronicle, which features a a researcher with blue latex gloves holding a brown baby eagle A man in a blue shirt uses ropes and spurred boots to climb a cottonwood tree Two researchers in white baseball hats with blue latex gloves take a blood sample from a baby eagle
January 9, 2026 at 5:01 PM
drfishsg.bsky.social
28-Year review of acute toxicity in rainbow trout and Daphnia magna exposed to industrial effluents in Ontario, Canada

#GreatLakes 🧪

www.sciencedirect.com/science/arti...

pollution reduction led to a significant decrease in acute toxicity in Ontario industrial effluents
28-Year review of acute toxicity in rainbow trout and Daphnia magna exposed to industrial effluents in Ontario, Canada
Ontario’s Municipal/Industrial Strategy for Abatement (MISA) was a collaborative effort between government and industry to reduce the environmental im…
www.sciencedirect.com
January 8, 2026 at 8:53 PM
Reposted by Titus Seilheimer
uwiscseagrant.bsky.social
Meet the tree climbers behind the Great Lakes Eagle Health Project. Watch what it takes to get that eagle-eye view 🦅.
https://youtube.com/shorts/iydZJwrl87s?feature=share
January 8, 2026 at 4:00 PM
drfishsg.bsky.social
Assessing nutrient and chlorophyll drivers in Lake of the Woods: A complex system shared among Indigenous communities, Canada, and the USA

🧪

www.sciencedirect.com/science/arti...
Assessing nutrient and chlorophyll drivers in Lake of the Woods: A complex system shared among Indigenous communities, Canada, and the USA
Lake of the Woods (LotW) is a large, morphologically complex water body shared between Indigenous communities, Canada, and the US with a history of eu…
www.sciencedirect.com
January 7, 2026 at 8:41 PM
drfishsg.bsky.social
Historical PFAS trends in the Great Lakes using four decades of archived fish.

#GreatLakes 🧪

www.sciencedirect.com/science/arti...
Analysis of the fish archive revealed that total bioaccumulative PFASs in predator fish peaked around 2008 and have since been decreasing.
January 6, 2026 at 8:40 PM
Reposted by Titus Seilheimer
iaglr.bsky.social
The JGLR/Elsevier Student Award is awarded annually to the top-ranked paper in the current volume of the Journal of Great Lakes Research whose lead author was a student at the time of acceptance. Nomination information and portal: https://bit.ly/4j49wyN
December 31, 2025 at 6:00 PM
Reposted by Titus Seilheimer
iaglr.bsky.social
The JGLR/Elsevier Early Career Award is awarded to the top-ranked paper in the current volume of the Journal of Great Lakes Research whose lead author is within five years of graduation from their terminal degree. Nomination information and portal: https://bit.ly/3DbQK8f
January 5, 2026 at 6:00 PM
Reposted by Titus Seilheimer
iaglr.bsky.social
The Chandler-Misener Award is presented annually to the author(s) of the peer-reviewed paper in the current volume of the Journal of Great Lakes Research judged to be "most notable." Nomination information and portal: https://bit.ly/4giKyJU #GreatLakesSci
January 6, 2026 at 6:30 PM
Reposted by Titus Seilheimer
uwiscseagrant.bsky.social
What can bald eagles tell us about “forever chemicals”? In our latest feature, follow the Great Lakes Eagle Health Project team as they study bald eagles as a sentinel species.
https://www.seagrant.wisc.edu/news/eagles/
January 6, 2026 at 5:10 PM
Reposted by Titus Seilheimer
fengzhihe.bsky.social
Our new paper in @natrevbiodiv.nature.com highlights the untapped potential of CMS for enhancing the conservation of migratory freshwater fishes, which are currently underrepresented in Appendices I & II of CMS. Check the full text here: rdcu.be/eXOlk
January 6, 2026 at 3:07 PM
Reposted by Titus Seilheimer
rallidaerule.bsky.social
I'm hiring a postdoc to work with myself, Dr Jim Lyons and the entire NOAA Firebird team on the adaptive management part of our larger project focused on the impacts of prescribed fire on Gulf Coast wetlands

Accepting applications until Feb 15th

blogs.illinois.edu/view/7426/19...
Postdoctoral Research Associate - NOAA Firebird - Illinois Natural History Survey/PRI - Application Deadline: February 15, 2026
blogs.illinois.edu
January 6, 2026 at 1:29 PM
Reposted by Titus Seilheimer
drvanessapirotta.bsky.social
It’s simple. Many of us share #science. Please join up.

go.bsky.app/H3qcvgP

Please add your name below and expertise and you’ll be added!

#scientistswhocommunicatescience #scicomm #womeninsciencw
December 2, 2024 at 2:07 AM
Reposted by Titus Seilheimer
uwiscseagrant.bsky.social
Teachers and students, join us on January 14 for another edition of Students Ask Scientists! Professor Ben Peterson will be talking about mercury and microbes in aquatic environments.

https://www.seagrant.wisc.edu/news/join-us-for-students-ask-scientists-on-january-14/
Join us for Students Ask Scientists on January 14
Professor Ben Peterson will discuss how mercury becomes toxic in aquatic environments.
www.seagrant.wisc.edu
January 5, 2026 at 4:55 PM
drfishsg.bsky.social
I went to the Olympic trials for long track speed skating this weekend, so here's a fish that can put in a real burst of speed, the muskellunge! #SundayFishSketch
Ink and watercolor sketch of a long and torpedo shaped fish, the muskellunge!
January 5, 2026 at 3:15 AM
drfishsg.bsky.social
A chilly Lake Michigan morning.

#GreatLakes
January 2, 2026 at 5:35 PM
drfishsg.bsky.social
Happy New Year's Eel!
American eel sketch with ink and watercolor.
December 31, 2025 at 3:03 PM
drfishsg.bsky.social
Wrapping up the final four #25DaysOfFishmas plus three more for #SundayFishSketch. Ohio Lamprey, Ghost Shiner, American Shad, Atlantic Sturgeon, Common Shiner, Whale Shark, and a Cisco in a pear tree!
Ink and watercolor sketch of an Ohio lamprey. Three ink and watercolor fish sketches. Three ink and watercolor fish sketches.
December 29, 2025 at 3:14 AM
Reposted by Titus Seilheimer
drkatfish.bsky.social
That's a wrap on 2025's #25DaysofFishmas - the 10th year of #Fishmas silliness! Thanks to everyone who has followed along as we explored some of the amazing fish that call the US home.

From Atlantic to Pacific, there's a lot worth protecting - wishing everyone peace and renewal of hope for 2026.
All of the fish species featured during the 2025 #25DaysofFishmas
December 25, 2025 at 9:12 PM
Reposted by Titus Seilheimer
drkatfish.bsky.social
Everybody's gone sturgeon'
Sturgeon' U.S.A

Though we ended #25DaysofFishmas with the Atlantic sturgeon on the East Coast, there are several species of sturgeon all across North America - from Atlantic to Pacific. Maybe even in your own backyard!
A map of the US showing different species of sturgeon that can be found in different regions
December 25, 2025 at 2:41 PM
Reposted by Titus Seilheimer
drkatfish.bsky.social
Despite these challenges, Atlantic sturgeon are showing signs of recovery in places like the Chesapeake Bay. Habitat restoration + dam removal have improved spawning success, but since females take a while to mature + may only spawn once every 2-5 years, it takes time to see results #25DaysofFishmas
Two people hold a large Atlantic sturgeon
December 25, 2025 at 2:35 PM
Reposted by Titus Seilheimer
drkatfish.bsky.social
Fishing for Atlantic sturgeon has mostly ended + protections have been put in place via the endangered/threatened listing, but they still face other threats to recovery including dams that cut off access to spawning rivers, entanglement in fishing gear + mortality from ship strikes #25DaysofFishmas
Several Atlantic sturgeon underwater
December 25, 2025 at 2:29 PM
Reposted by Titus Seilheimer
drkatfish.bsky.social
By the late 1800s, Atlantic sturgeon had become the focus of intense harvesting for their eggs/roe that were prized as caviar - for a time, New Jersey supplied more of the world’s caviar than anywhere else. Since females were targeted, this contributed to dramatic population crashes #25DaysofFishmas
An image showing historical harvest of Atlantic sturgeon
December 25, 2025 at 2:24 PM