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Hannah Cohen

@evocohen.bsky.social

PhD student at UMich-SEAS | MSc | fish ecology & history | she/her

965 Followers  |  631 Following  |  26 Posts  |  Joined: 26.07.2023  |  1.8838

Latest posts by evocohen.bsky.social on Bluesky


Corush Lab

I'm recruiting a Ph.D. student for Fall 2026.

Interested in comparative studies and trait evolution in fishes?

Send me an email with a CV and research interests. Please take a look at my website (jcorush.github.io ) for more information about my research.

#hybridization #minnows #mudskippers

04.12.2025 00:38 β€” πŸ‘ 32    πŸ” 57    πŸ’¬ 1    πŸ“Œ 1
Post image Post image

#OnThisDay in 1859, Charles Darwin's landmark book 'On the Origin of Species' was first published. The work is one of the foundations of evolutionary biology, and one of the most important scientific works of the 19th century. #HistoryOfScience

24.11.2025 09:07 β€” πŸ‘ 60    πŸ” 23    πŸ’¬ 0    πŸ“Œ 1
Postdoctoral Researcher, Biology Postdoctoral Researcher: A Postdoctoral Research Associate position is available at the University of South Dakota in Dr. Jeff Wesner’s lab in the Department of Biology. The NSF-funded project will ex...

Postdoc position in Freshwater Ecology starting Spring 2026: yourfuture.sdbor.edu/postings/45968

03.11.2025 23:39 β€” πŸ‘ 2    πŸ” 10    πŸ’¬ 0    πŸ“Œ 1

Great to see new work lead by @pjflood.bsky.social out in @globalchangebio.bsky.social this week. Another piece from our collaboration with @michigandnr.bsky.social examining recently digitized historical lake survey data.
news.umich.edu/fishes-young...

07.11.2025 16:42 β€” πŸ‘ 2    πŸ” 5    πŸ’¬ 0    πŸ“Œ 0

Amazing talk!! 🐑

01.11.2025 00:36 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
EMERGE Alaska | College of Fisheries and Ocean Sciences

🚨 Recruiting 12 PhD students for a new NSF-funded program at the University of Alaska Fairbanks College of Fisheries and Ocean Sciences! This program is for U.S. students who received an Honorable Mention on the NSF GRFP within the last 3 years. @uafairbanks.bsky.social

www.uaf.edu/cfos/academi...

24.10.2025 20:04 β€” πŸ‘ 31    πŸ” 35    πŸ’¬ 2    πŸ“Œ 2
Screen cap from the beginning of a paywalled Detroit News article titled β€œFederal Layoffs would gut Great Lakes fisheries research center.” Posted in Oct 20, 2025 at 9:25pm and written by Melissa Nann Burke. It reads β€œWashington - the U. S. Geological Survey is planning to lay off 79% of the workforce of the Great Lakes Science Center that’s headquartered in Ann Arbor as part of a reduction in force across the U.S Department of the Interior, officials say.”

Screen cap from the beginning of a paywalled Detroit News article titled β€œFederal Layoffs would gut Great Lakes fisheries research center.” Posted in Oct 20, 2025 at 9:25pm and written by Melissa Nann Burke. It reads β€œWashington - the U. S. Geological Survey is planning to lay off 79% of the workforce of the Great Lakes Science Center that’s headquartered in Ann Arbor as part of a reduction in force across the U.S Department of the Interior, officials say.”

www.detroitnews.com/story/news/p...
79% will leave behind no science staff.

21.10.2025 18:30 β€” πŸ‘ 2    πŸ” 3    πŸ’¬ 2    πŸ“Œ 1

Colleagues in ocean science academia: πŸ§ͺπŸ¦‘πŸŒŽ

I am working on the section of my marine biology career advice book about applying to graduate school. I have lots to say here from both my own experience and years of teaching this stuff, but I’d welcome your input on any or all of this if you’re willing.

14.10.2025 11:15 β€” πŸ‘ 41    πŸ” 17    πŸ’¬ 2    πŸ“Œ 2
Res Museum Collection Manager | U-M Careers

Michigan's #UMMZ Reptiles and Amphibians Collections Manager position is now open. Join a great museums group and help manage the world's second largest herpetology research collection. Please share! careers.umich.edu/job_detail/2...

11.10.2025 13:47 β€” πŸ‘ 9    πŸ” 14    πŸ’¬ 0    πŸ“Œ 1
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You’re not ready for gar slime:

01.10.2025 14:33 β€” πŸ‘ 110    πŸ” 16    πŸ’¬ 9    πŸ“Œ 10
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NSF Graduate Research Fellowship Program (GRFP)

NSF GRFP is out 2.5 months late w/key changes

1. 2nd year graduate students not eligible.

2. "alignment with Administration priorities"

3. Unlike prior years, they DO NOT specify the expected number of awards... that is a BIG problem.

a brief 🧡 w/receipts

www.nsf.gov/funding/oppo...

27.09.2025 00:04 β€” πŸ‘ 94    πŸ” 79    πŸ’¬ 3    πŸ“Œ 6
Assistant Curator, Vertebrate Zoology The Division of Vertebrate Zoology at the American Museum of Natural History (AMNH) seeks an Assistant Curator in either the Department of Ornithology, Ichthyology, or Mammalogy to start on or after J...

Join us! We are hiring a new #curator at the #AMNH in #Vertebrate #Zoology careers.amnh.org/postings/4600 #academicjobs #tenuretrack

26.09.2025 18:57 β€” πŸ‘ 32    πŸ” 44    πŸ’¬ 0    πŸ“Œ 0
Multicolored CT model of a fossil cichlid skeleton. Image credit: Austin Babut (project technician).

Multicolored CT model of a fossil cichlid skeleton. Image credit: Austin Babut (project technician).

Do you like cichlids? Fossils? Fossil cichlids? Would you like to study them as part of a graduate degree at the University of Michigan, joining an NSF-funded project? Get in touch.

12.09.2025 19:56 β€” πŸ‘ 69    πŸ” 57    πŸ’¬ 2    πŸ“Œ 3
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This common fish has an uncommon feature: forehead teeth, used for mating New findings call into question one of the core assumptions about teeth. Adult male spotted ratfish, a shark-like species native to the eastern Pacific Ocean, have rows of teeth on top of their heads,...

New paper is officially out!
Ratfish have a second jaw on their foreheads - CT + histology show they’re real teeth, built from the same tissues and signals as oral teeth.

www.washington.edu/news/2025/09...

04.09.2025 19:01 β€” πŸ‘ 177    πŸ” 62    πŸ’¬ 10    πŸ“Œ 23
A photo of a man in a cap holding the line on which is a very bright orange Nurse Shark ( a very flat, bottom feeding shark that is no threat to humans) in this photo you can clearly see the silver/white eye of the animal.

A photo of a man in a cap holding the line on which is a very bright orange Nurse Shark ( a very flat, bottom feeding shark that is no threat to humans) in this photo you can clearly see the silver/white eye of the animal.

A photo of a man in a cap holding the line on which is a very bright orange Nurse Shark ( a very flat, bottom feeding shark that is no threat to humans) in this photo the angle is a lot higher, showing the entire body of the shark from above water.

A photo of a man in a cap holding the line on which is a very bright orange Nurse Shark ( a very flat, bottom feeding shark that is no threat to humans) in this photo the angle is a lot higher, showing the entire body of the shark from above water.

Babe, wake up - Xanthochromic nurse shark just dropped..

Caught by some sport fishermen out near Costa Rica (and released after some photos were snapped)

Look at this beaut, how ORANGE!!

20.08.2025 20:00 β€” πŸ‘ 728    πŸ” 293    πŸ’¬ 14    πŸ“Œ 29
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ecoevojobs.net 2025-26

The 2025-26 Eco-Evo job list is out. Good luck to those applying!

docs.google.com/spreadsheets...

19.08.2025 07:18 β€” πŸ‘ 208    πŸ” 215    πŸ’¬ 5    πŸ“Œ 3
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I am recruiting graduate students to begin August 2026. Apply by Nov 15th!

21.08.2025 15:40 β€” πŸ‘ 53    πŸ” 30    πŸ’¬ 0    πŸ“Œ 1

Michigan field guides? Online for free? Yes, please!

22.07.2025 18:30 β€” πŸ‘ 10    πŸ” 9    πŸ’¬ 0    πŸ“Œ 0
A Shortnose Gar headshot is pictured against the backdrop of the Minnesota River. Obviously on the lookout for potential GARduate students.

A Shortnose Gar headshot is pictured against the backdrop of the Minnesota River. Obviously on the lookout for potential GARduate students.

JOIN US!!!

@garlab.bsky.social is looking for a PhD and MS student to join our team studying ecology & conservation of gars, bowfin, and other non-game native fishes beginning Spring 2026!

Posting & more info coming soon. Please DM or email srdavid@umn.edu with CV if interested!

10.07.2025 16:40 β€” πŸ‘ 166    πŸ” 87    πŸ’¬ 5    πŸ“Œ 7
Too poor to science: How wealth determines who succeeds in STEM From student to researcher, a career in science can come with a high price tag. This Perspective explores how persistent financial barriers limit who can succeed in science, revealing how wealth shape...

I've wanted to write this article for years. About my and other's struggles to even survive sometime in #academia. Thank you to the amazing editors at @plosbiology.org that gave me the forum to write this piece. #science

24.06.2025 18:09 β€” πŸ‘ 390    πŸ” 197    πŸ’¬ 22    πŸ“Œ 43
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EEB Mentor Match Visit the post for more.

EEB Mentor Match for 2025 is now open!
This is an opportunity for students applying to graduate school in Ecology, Evolution, or Behavior to be matched with a mentor to guide them through the application process. Mentors can sign up too!
eebmentormatch.com

11.06.2025 16:49 β€” πŸ‘ 20    πŸ” 33    πŸ’¬ 2    πŸ“Œ 1

Why is this so accurate πŸ˜‚

15.06.2025 22:19 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Distinct ossification trade-offs illuminate the shoulder girdle reconfiguration at the water-to-land transition - Nature Communications Gli and Hedgehog genes compound knockout fish exhibited a combination of actinopterygian fish and stem-tetrapod pectoral girdle characteristics, suggesting the evolutionary origin of terrestrial girdl...

Out earlier this week from the lab I used to work for. Happy to see this published!
www.nature.com/articles/s41...

01.06.2025 17:24 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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On the importance and practical conservation of nongame fishes ABSTRACT. Fisheries management has historically focused conservation efforts on game or sport species. However, most species are nongameβ€”those not traditio

On the importance and practical conservation of nongame fishes
academic.oup.com/fisheries/ad... by Clancy et al 2025 in latest @amfisheriessoc.bsky.social

31.05.2025 14:34 β€” πŸ‘ 41    πŸ” 17    πŸ’¬ 0    πŸ“Œ 0
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Ecology/Evolution/Marine Biology labs recruiting for Fall 2026 Please complete this form if you are a PI recruiting graduate students for a Fall 2026 start. If you are NOT recruiting, feel free to share the response sheet with prospective students looking for lab...

Its that time again - the list of Ecology/Evolution/Marine Bio Labs recruiting grad students for Fall 2026 is live!
PIs enter your position info here: forms.gle/2XTHBP6CZGEn...
Prospective students (and PIs not recruiting) share the composite list: docs.google.com/spreadsheets...
Please share! πŸ§ͺ

15.05.2025 19:57 β€” πŸ‘ 72    πŸ” 76    πŸ’¬ 2    πŸ“Œ 0
Map of the US with red dots representing people who've signed Sea Grant support letters. The dots are largely concentrated along the ocean and Great Lakes coasts, as that's where the Sea Grant programs are located.

Map of the US with red dots representing people who've signed Sea Grant support letters. The dots are largely concentrated along the ocean and Great Lakes coasts, as that's where the Sea Grant programs are located.

The Sea Grant network has supporters all over the country! Thank you for standing up on behalf of Great Lakes and ocean outreach, research, and education: buff.ly/07P5U58

If you'd like to sign onto Michigan Sea Grant's support letter to Congress, click here: buff.ly/rkqJ3AQ

15.05.2025 18:11 β€” πŸ‘ 16    πŸ” 11    πŸ’¬ 0    πŸ“Œ 1
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Trump budget document points to ending federal role in Great Lakes science by next year Staffing at NOAA's Great Lakes Environmental Research Laboratory was already reduced by more than one-third in 2025.

The administration's preliminary FY 2026 budget requests that federal involvement in many aspects of #GreatLakes science be eliminated entirely by next year, including completely ending funding for Sea Grant programs nationwide www.freep.com/story/news/l...

25.04.2025 20:00 β€” πŸ‘ 14    πŸ” 10    πŸ’¬ 0    πŸ“Œ 2
18.04.2025 19:07 β€” πŸ‘ 73    πŸ” 9    πŸ’¬ 0    πŸ“Œ 0
Notice of Changes Notices of changes are formal public announcements of planned services changes to applications and other products.

NOAA just announced a long list of datasets that are going awayπŸ§ͺβš’οΈπŸŒŠ: www.nesdis.noaa.gov/about/docume...
Download what you need asap and send comments to: ncei.info@noaa.gov

17.04.2025 00:44 β€” πŸ‘ 1033    πŸ” 954    πŸ’¬ 42    πŸ“Œ 118
Lead author Auke-Florian Hiemstra holds the oldest known caddisfly casing containing microplastic, dating to 1971. Photo: Liselotte Rambonnet.

Lead author Auke-Florian Hiemstra holds the oldest known caddisfly casing containing microplastic, dating to 1971. Photo: Liselotte Rambonnet.

A caddisfly casing with pieces of blue microplastic, dating 1986. Photo: Auke-Florian Hiemstra

A caddisfly casing with pieces of blue microplastic, dating 1986. Photo: Auke-Florian Hiemstra

NEW PAPER, JUST OUT! πŸ‘€

Insects from the '70s and '80s were already collecting microplastic, decades before the term microplastic even existed. 🀯

A thread on the surprising history of this pollutant and the incredible insect larvae that helped us uncover it. πŸ›

Let's dive in! πŸ§΅πŸ‘‡ 1/x

09.04.2025 10:06 β€” πŸ‘ 1508    πŸ” 701    πŸ’¬ 33    πŸ“Œ 120

@evocohen is following 20 prominent accounts