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Hannah Sima Rempel

@hannah-rempel.bsky.social

2.5K followers 2.3K following 99 posts

Marine ecologist & PhD student interested in how human impacts alter marine trophic interactions. (She/her) 🏳️‍🌈🪸 🐟 ⚛️ 🧬 Other interests include: rstats, sciart, community engagement and educational outreach https://hannahrempel.weebly.com

hannahrempel.weebly.com

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Hannah Sima Rempel @hannah-rempel.bsky.social · Nov 1

Why do animals eat their own poop—and other animals’ too? It's not just your dog that does it, but fish, moose, and many other creatures! 💩

Learn more in a Nat Geo article by Katarina Zimmer highlighting my research and that other scientists: nationalgeographic.com/animals/arti...

Why do animals eat their own poop—and other animals’ too?

This natural survival strategy, known as coprophagy, reveals how wildlife makes the most of every available resource.

nationalgeographic.com

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Hannah Sima Rempel @hannah-rempel.bsky.social · Aug 29

Great new pub by Pappalardo et al. on taxon-specific BLAST % identity thresholds for DNA #metabarcoding 🧬, with an associated Shiny app for optimized COI thresholds tailored to your data:
besjournals.onlinelibrary.wiley.com/doi/full/10....

shiny.si.edu/ebbs_blast_f...

#eDNA

Taxon‐specific BLAST percent identity thresholds for identification of unknown sequences using metabarcoding

The identification of organisms in environmental samples using metabarcoding relies on factors such as taxonomic assignment methods, genetic markers, reference databases and confidence thresholds ...

besjournals.onlinelibrary.wiley.com

Hannah Sima Rempel @hannah-rempel.bsky.social · Jul 2

So excited to see this published, its an amazing synthesis of so much work! Congratulations to you and the team!

Reposted by Hannah Sima Rempel

Aaron O'Dea @odealab.bsky.social · Jul 1

🐠🦈 Just out: In this paper we ask "How has reef trophic structure changed since humans started removing predatory fishes from Caribbean coral reefs?".

www.pnas.org/doi/10.1073/...
Illustrations @cookedillustrations.com

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Hannah Sima Rempel @hannah-rempel.bsky.social · May 2

Why are 15% caps bad?

Overhead fees not only support university administrator positions, but also costs of core labs, facilities/maintenance, etc. University overhead is often ~50-60%... this may be excessive, but dropping it to 15% likely means grants costs universities more than they bring in.

Hannah Sima Rempel @hannah-rempel.bsky.social · May 2

There's now a 15% overhead cap on NSF grants 😔, similar to the 15% NIH cap that went into effect several months ago:
www.nsf.gov/policies/doc...

A judge has temporarily blocked the NIH cap (www.science.org/content/arti...), here's hoping we get similar judicial checks on the NSF cap!

Policy Notice: Implementation of Standard 15% Indirect Cost Rate

www.nsf.gov

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Hannah Sima Rempel @hannah-rempel.bsky.social · Apr 11

My cats decided to help me with my committee meeting slides. I think they turned out pretty great.

#PhDCat #CatSky

Hannah Sima Rempel @hannah-rempel.bsky.social · Feb 28

Thank you!!

Hannah Sima Rempel @hannah-rempel.bsky.social · Feb 27

I am thrilled to share that I was a awarded a 25-26 Graduate Continuing Fellowship from the University of Texas at Austin, supporting the final year of my PhD!

This week, a colleague & I finalized lab work for 2 projects. I look forward to sharing our findings in the coming year!

Three scientists in a lab with lab coats and glasses are smiling.

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Reposted by Hannah Sima Rempel

Prof Jenny Rohn @jennyrohn.bsky.social · Feb 11

On this celebratory day of women and girls in science, let’s reflect that the US National Science Foundation has put the words “women” and “female” (but not “men” and “male”) on the list of forbidden words that will get your grant slated for the reject bin.

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Hannah Sima Rempel @hannah-rempel.bsky.social · Feb 11

Send Google feedback! (Directions below, its easy!) If enough people voice their outrage, it can influence corporate policy.

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Hannah Sima Rempel @hannah-rempel.bsky.social · Feb 11

If were going to be renaming the Gulf, then here’s the improved version (all jokes aside, this is such an idiotic thing to do)

Reposted by Hannah Sima Rempel

Physalia-courses@Online @physaliacourses.bsky.social · Feb 7

Today is the last day of our #Metabarcoding in Microbial Ecology course! A huge thank you to our instructors and all the participants for making this week a great learning experience.
@fonamental.bsky.social @delcampolab.bsky.social

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Hannah Sima Rempel @hannah-rempel.bsky.social · Feb 4

Thank you!

Hannah Sima Rempel @hannah-rempel.bsky.social · Feb 3

I'd love to be added if there's space :)

Hannah Sima Rempel @hannah-rempel.bsky.social · Jan 26

As part of the ‘24-25 SWIMM program, a group of students from Mexico, Cuba and the US have been helping develop a Report Card of coastal resources of Tabasco. 🇲🇽🇨🇺🇺🇸 Last week, we presented a first draft to collaborators in Villahermosa! This has been an amazing group and project to be a part of! 💕

A group of people smiling in front of a presentation

Hannah Sima Rempel @hannah-rempel.bsky.social · Jan 7

www.youtube.com/watch?v=xGhu...

Nancy Knowlton - From Doom and Gloom to #OceanOptimism: Success Stories in Marine Conservation

YouTube video by Aquarium of the Pacific

www.youtube.com

Hannah Sima Rempel @hannah-rempel.bsky.social · Jan 7

I didn't mean to imply aren't reaching tipping points, rather that stating we are "out of time" suggests an inevitability to mitigating climate change impacts. Nancy Knowlton has highlighted how "doom and gloom" science can lead to self-fulfilling inaction. I prefer to focus on actions we can take.

Hannah Sima Rempel @hannah-rempel.bsky.social · Jan 7

Not if people and our elected governments take dramatic action within the next two decades, according to leading experts. www.pbs.org/newshour/amp...

Humanity can still stop worst consequences of climate change, but time is running out, IPCC warns

This is likely the last warning the IPCC will be able to make about the 1.5 mark because their next set of reports will likely come after Earth has either breached the mark or locked into exceeding it...

www.pbs.org

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Hannah Sima Rempel @hannah-rempel.bsky.social · Dec 27

How is bat acoustic activity influenced by noise pollution? How do impacts differ between natural sounds and human ones with similar acoustic characteristics? 🦇💧🚗

Learn more in our new open-access publication, led by Ryan Vosbigian: dx.doi.org/10.1002/ecs2...

Natural and anthropogenic noise shape bat activity and sonar behavior

As human development has expanded, so has the prevalence of anthropogenic noise, which can interfere with acoustic channels used by wildlife. However, since landscapes contain natural sources of pers....

dx.doi.org

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Hannah Sima Rempel @hannah-rempel.bsky.social · Dec 23

Just did the last PCR of my PhD and with that, Im done with the last of my lab work! 🧬🧪🎉

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Hannah Sima Rempel @hannah-rempel.bsky.social · Dec 23

Thank you!

Hannah Sima Rempel @hannah-rempel.bsky.social · Dec 22

Coral bleaching surveys in Bonaire from 2016-2023 show that last year had the most widespread bleaching and related coral colony mortality. While this is disheartening, focusing on increasing local reef resilience can help buy time to address global climate change. 🪸💪

📖: www.dcbd.nl/reposerver/a...

A bleached Madracis auretenra coral showing completely bleached tissues and some tissue mortality on more sun exposed portions of the coral, and only partial bleaching and no mortality on more shaded areas.

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Hannah Sima Rempel @hannah-rempel.bsky.social · Dec 21

Hi, could I be added?

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Hannah Sima Rempel @hannah-rempel.bsky.social · Dec 11

For folks wanting to post to Coralsky, it will automatically include posts with any of the following keywords (non case sensitive):

coralsky, coral reef(s), coralreef(s), coral bleaching, barrier reef, tropical reef, coral [polyp/conservation/atoll/bleaching], scleractinia(n), reef fish

Hannah Sima Rempel @hannah-rempel.bsky.social · Dec 9

For folks interested in coral reef ecosystem related research and news, check out the Coralsky feed! 🪸🐠🦀

bsky.app/profile/did:...

a picture of a coral reef with the words that 's the coral of the story

ALT: a picture of a coral reef with the words that 's the coral of the story

media.tenor.com

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