Titus Seilheimer
@drfishsg.bsky.social
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
Pinned
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!
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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!
🧪
Assessing nutrient and chlorophyll drivers in Lake of the Woods: A complex system shared among Indigenous communities, Canada, and the USA
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www.sciencedirect.com/science/arti...
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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
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...
🧪
www.sciencedirect.com/science/arti...
Historical PFAS trends in the Great Lakes using four decades of archived fish.
#GreatLakes 🧪
www.sciencedirect.com/science/arti...
#GreatLakes 🧪
www.sciencedirect.com/science/arti...
January 6, 2026 at 8:40 PM
Historical PFAS trends in the Great Lakes using four decades of archived fish.
#GreatLakes 🧪
www.sciencedirect.com/science/arti...
#GreatLakes 🧪
www.sciencedirect.com/science/arti...
Reposted by Titus Seilheimer
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
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
Reposted by Titus Seilheimer
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
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
Reposted by Titus Seilheimer
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
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
Reposted by Titus Seilheimer
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/
https://www.seagrant.wisc.edu/news/eagles/
January 6, 2026 at 5:10 PM
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/
https://www.seagrant.wisc.edu/news/eagles/
Reposted by Titus Seilheimer
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
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
Reposted by Titus Seilheimer
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...
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
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...
Accepting applications until Feb 15th
blogs.illinois.edu/view/7426/19...
Reposted by Titus Seilheimer
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
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
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
go.bsky.app/H3qcvgP
Please add your name below and expertise and you’ll be added!
#scientistswhocommunicatescience #scicomm #womeninsciencw
Reposted by Titus Seilheimer
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/
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
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/
https://www.seagrant.wisc.edu/news/join-us-for-students-ask-scientists-on-january-14/
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
January 5, 2026 at 3:15 AM
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
January 2, 2026 at 5:35 PM
Happy New Year's Eel!
December 31, 2025 at 3:03 PM
Happy New Year's Eel!
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!
December 29, 2025 at 3:14 AM
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!
Reposted by Titus Seilheimer
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.
From Atlantic to Pacific, there's a lot worth protecting - wishing everyone peace and renewal of hope for 2026.
December 25, 2025 at 9:12 PM
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.
From Atlantic to Pacific, there's a lot worth protecting - wishing everyone peace and renewal of hope for 2026.
Reposted by Titus Seilheimer
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!
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!
December 25, 2025 at 2:41 PM
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!
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!
Reposted by Titus Seilheimer
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
December 25, 2025 at 2:35 PM
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
Reposted by Titus Seilheimer
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
December 25, 2025 at 2:29 PM
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
Reposted by Titus Seilheimer
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
December 25, 2025 at 2:24 PM
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
Reposted by Titus Seilheimer
Native Americans harvested Atlantic sturgeon for their meat + roe (eggs) for 1000s of years pre-European settlers. While credited with saving Jamestown during a famine in 1609, settlers initially thought of sturgeon meat as for the poor/lower-class + its eggs fit only for livestock #25DaysofFishmas
December 25, 2025 at 2:21 PM
Native Americans harvested Atlantic sturgeon for their meat + roe (eggs) for 1000s of years pre-European settlers. While credited with saving Jamestown during a famine in 1609, settlers initially thought of sturgeon meat as for the poor/lower-class + its eggs fit only for livestock #25DaysofFishmas
Reposted by Titus Seilheimer
Like other sturgeon species, Atlantic sturgeon feed along the bottom. They find food using their sensitive barbels and use their toothless, expandable mouth like a vacuum, sucking up worms, small fish, and other small animals living on the bottom #25DaysofFishmas
December 25, 2025 at 2:15 PM
Like other sturgeon species, Atlantic sturgeon feed along the bottom. They find food using their sensitive barbels and use their toothless, expandable mouth like a vacuum, sucking up worms, small fish, and other small animals living on the bottom #25DaysofFishmas
Reposted by Titus Seilheimer
One of the East Coast’s largest fish, Atlantic sturgeon are slow-growing. They can grow up to 14 ft/4.3 m long, weigh up to 800 lbs/363 kg and live up to 60 years! Depending on where they live (north vs. south), female sturgeon may not mature until they’re 22-34 years old #25DaysofFishmas
December 25, 2025 at 2:11 PM
One of the East Coast’s largest fish, Atlantic sturgeon are slow-growing. They can grow up to 14 ft/4.3 m long, weigh up to 800 lbs/363 kg and live up to 60 years! Depending on where they live (north vs. south), female sturgeon may not mature until they’re 22-34 years old #25DaysofFishmas
Reposted by Titus Seilheimer
Atlantic sturgeon are migratory, spawning + spending the first few years of life in large rivers from Canada to Florida before moving to coastal waters as adults. All US Atlantic sturgeon populations are currently listed as endangered or threatened under the Endangered Species Act #25DaysofFishmas
December 25, 2025 at 2:08 PM
Atlantic sturgeon are migratory, spawning + spending the first few years of life in large rivers from Canada to Florida before moving to coastal waters as adults. All US Atlantic sturgeon populations are currently listed as endangered or threatened under the Endangered Species Act #25DaysofFishmas
Reposted by Titus Seilheimer
Atlantic sturgeon is one of ~27 species in the sturgeon family Acipenseridae, a group whose looks haven’t changed much since the Cretaceous. They have bony plates (scutes) instead of scales, barbels by their mouths + heterocercal tails (one side larger than the other - like sharks) #25DaysofFishmas
December 25, 2025 at 2:03 PM
Atlantic sturgeon is one of ~27 species in the sturgeon family Acipenseridae, a group whose looks haven’t changed much since the Cretaceous. They have bony plates (scutes) instead of scales, barbels by their mouths + heterocercal tails (one side larger than the other - like sharks) #25DaysofFishmas
Reposted by Titus Seilheimer
The big day is finally here - and with it, a very big fish!
Our #25DaysofFishmas road trip ends on the East Coast with the ancient-looking Atlantic Sturgeon (Acipenser oxyrinchus). Once close to becoming a Ghost of Fishmas Past, their ongoing recovery represents a possible brighter Fishmas Future
Our #25DaysofFishmas road trip ends on the East Coast with the ancient-looking Atlantic Sturgeon (Acipenser oxyrinchus). Once close to becoming a Ghost of Fishmas Past, their ongoing recovery represents a possible brighter Fishmas Future
December 25, 2025 at 2:01 PM
The big day is finally here - and with it, a very big fish!
Our #25DaysofFishmas road trip ends on the East Coast with the ancient-looking Atlantic Sturgeon (Acipenser oxyrinchus). Once close to becoming a Ghost of Fishmas Past, their ongoing recovery represents a possible brighter Fishmas Future
Our #25DaysofFishmas road trip ends on the East Coast with the ancient-looking Atlantic Sturgeon (Acipenser oxyrinchus). Once close to becoming a Ghost of Fishmas Past, their ongoing recovery represents a possible brighter Fishmas Future