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Alyssa Gehman

@rhizalyssa.bsky.social
996 followers 2K following 9 posts

marine disease ecologists, diver, parasite enthusiast @hakaiinstitute.bsky.social sentinels.hakai.org

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Reposted by Alyssa Gehman
UBC Oceans @ubcoceans.bsky.social · 03/09/2026
Having found a mysterious killer of sea stars, scientists see an ingenious way to stop it. @rhizalyssa.bsky.social www.theglobeandmail.com/canada/artic...
theglobeandmail.com
Having found a mysterious killer of sea stars, B.C. scientists see a way to stop it
To halt a bacterial illness that killed billions of marine animals, researchers look to viruses
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Reposted by Alyssa Gehman
Liz Cooney @protistwtmostest.bsky.social · 18/06/2026
Meet Holdonia, a new member of the chrompodellid clade. Found clinging to a polychaete, this little guy reveals that similar patterns in plastid reduction have occurred independently across chrompodellid and related lineages. @rhizalyssa.bsky.social @pjkeelinglab.bsky.social tinyurl.com/2t25xb6z
tinyurl.com
The evolutionary transition from alga to parasite in the sister lineage of apicomplexans
The chrompodellids are a collection of photosynthetic “chromerids” and heterotrophic “colpodellids,” which are together the sister lineage to the apic…
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UBC Oceans @ubcoceans.bsky.social · 13/01/2026
“If we want to understand how #climatechange is shaping the Salish Sea, we need integrated data from across the coast—and we need to build it together, from Day 1," said Dr Alyssa Gehman. @rhizalyssa.bsky.social @hakai.org news.ubc.ca/2026/01/brea...
news.ubc.ca
Breaking down research silos to understand a shifting Salish Sea - UBC News
The Sentinels of Change Alliance shows what’s possible when collaboration is a foundation, not an add-on.
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UBC Oceans @ubcoceans.bsky.social · 15/01/2026
The Sentinels of Change Alliance brings together 26 researchers to investigate patterns of biodiversity, ecological change, and resilience across the Salish Sea. @rhizalyssa.bsky.social @zoology.ubc.ca @hakai.org @chrisharley.bsky.social ubctoday.ubc.ca/breaking-dow...
The Sentinels of Change Alliance are committed to collaborating within their team, as well as with community and non-profit groups. (Image credit: Clare Kiernan)
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UBC Oceans @ubcoceans.bsky.social · 20/11/2025
RESEARCH: Parasites of the hermit crab Pagurus hirsutiusculus; distribution, prevalence, and thermal ecology. Co-authored by Dr. Chris Harley (@zoology.ubc.ca) and Dr. Alyssa Gehman (@rhizalyssa.bsky.social ) journals.plos.org/plosone/arti...
journals.plos.org
Parasites of the hermit crab Pagurus hirsutiusculus; distribution, prevalence, and thermal ecology
Parasites are common throughout the biosphere and can play significant ecological roles. However, most parasites are understudied, particularly with regards to how their prevalence and impacts vary wi...
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Hakai Institute @hakai.org · 20/11/2025
Parasitic barnacles that turn hermit crabs into near-zombies? New UBC/Hakai research that surveyed 4,200 crabs at 65 sites shows these parasites are widespread across B.C., vulnerable to heat waves, and may be multiple cryptic species. Read more 🔗 tinyurl.com/4tfb5fjj
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Hakai Institute @hakai.org · 27/10/2025
Can some sunflower stars resist disease? Hakai researchers, with DFO, are testing stars from Calvert Island for Vibrio pectenicida resistance and how warmer waters affect infection. A step toward protecting these vital marine predators!
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Jessica Price @delafina777.bsky.social · 10/09/2025
So, right now, the only reliable way to diagnose endometriosis is with exploratory surgery. But finally, real scientists (instead of male scientists), are on the job & of course they’ve identified multiple markers in menstrual blood that point to noninvasive testing. www.science.org/content/arti...
science.org
Driven by the pain of endometriosis, this scientist is uncovering clues to its causes
Katie Burns is helping reveal the immune system’s role in the long-neglected disease
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Reposted by Alyssa Gehman
UBC EOAS @eoas.ubc.ca · 04/09/2025
🌊 A decade-long mystery solved: UBC-led researchers identified the bacteria behind sea star wasting disease (Vibrio pectenicida FHCF-3), published in Nature Ecology & Evolution. A huge step for marine recovery. 🪸🌍 www.nature.com/articles/s41559-025-…
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David Shiffman, Ph.D. 🦈 @whysharksmatter.bsky.social · 12/08/2025
Our marine biology career advice panel went great! Thanks to the Ecological Society of America for inviting me and giving me a chance to do something to help students. #ESA2025 @ecologicalsociety.bsky.social
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Nature Portfolio @natureportfolio.nature.com · 04/08/2025
A study in Nature Ecology & Evolution identifies a bacterial species as a cause of sea star wasting disease, which has been responsible for billions of sea star deaths since 2013 and widespread loss of kelp habitats. go.nature.com/46I4kx2 🌊 🧪
This is figure 2, which shows the disease signs and trajectory of P. helianthoides exposed to SSWD.
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bioGraphic @biographic.bsky.social · 05/08/2025
Unmasking the Sea Star Killer After a decade of carnage, we finally know what’s devastating sea stars along North America’s West Coast. Does that mean scientists can save them? by @craigwelch.bsky.social www.biographic.com/unmasking-th...
biographic.com
Unmasking the Sea Star Killer
After a decade of carnage, we finally know what’s devastating sea stars along North America’s West Coast. Does that mean scientists can save them?
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andrea tamayo @andreatamayo.bsky.social · 05/08/2025
Spoke with @rhizalyssa.bsky.social and Melanie Prentice about their investigation into what was causing billions of sea stars to disintegrate to death. The culprit: a bacterium by the name of Vibrio pectenicida. Read more about their work here:
scientificamerican.com
Billions of Starfish Have Disintegrated—and Scientists Finally Know Why
A devastating bacterium has decimated populations of sunflower sea stars, predators that play a crucial role in their environment
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Hakai Institute @hakai.org · 04/08/2025
After a four-year investigation, a breakthrough study reveals the cause of sea star wasting disease (SSWD). A strain of the bacterium Vibrio pectenicida is the culprit behind the marine epidemic that has killed billions of sea stars since 2013. Read the study: 🔗https://tinyurl.com/4rcb3xpf
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Curtis Suttle @virosphere.bsky.social · 05/08/2025
Very proud of the work from lab members and collaborators that coincidentally came out today www.pnas.org/doi/10.1073/... and www.nature.com/articles/s41.... A bacterial and viral pathogen associated with mass mortality in seastars and oysters. @kevinzhong2006.bsky.social @rhizalyssa.bsky.social
pnas.org
Evolutionarily divergent nidovirus with an exceptionally large genome identified in Pacific oysters undergoing mass mortality | PNAS
Metatranscriptomic data from a mass-mortality event of adult Pacific Oysters, Crassostrea (Magallana) gigas, the most widely cultivated shellfish g...
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Dr. Drew harvell @drewharvell.bsky.social · 04/08/2025
We are so proud of our sea star wasting work that came out today. This interactive article is very complete and includes beautiful videos. Unmasking the Sea Star Killer www.biographic.com/unmasking-th...
biographic.com
Unmasking the Sea Star Killer
After a decade of carnage, we finally know what’s devastating sea stars along North America’s West Coast. Does that mean scientists can save them?
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Reposted by Alyssa Gehman
Jude Isabella @judeisabella.bsky.social · 05/08/2025
For @biographic.bsky.social, writer @craigwelch.bsky.social followed @hakai.org scientist @rhizalyssa.bsky.social's quest to unveil the the killer that decimated populations of sea stars off the West Coast. It took a few years but the lab's hard work paid off: www.biographic.com/unmasking-th...
biographic.com
Unmasking the Sea Star Killer
After a decade of carnage, we finally know what’s devastating sea stars along North America’s West Coast. Does that mean scientists can save them?
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Reposted by Alyssa Gehman
Jeffrey Mervis @policyhound.bsky.social · 13/05/2025
For those having a hard time following all the changes to NSF by the Trump administration, here's a wrapup of the past week's momentous events--and what they mean for the agency. www.science.org/content/arti...
science.org
Trump officials take steps toward a radically different NSF
Efforts to shrink staff, budget, and focus have alarmed members of Congress
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Alyssa Gehman @rhizalyssa.bsky.social · 06/05/2025
Ten Vital Services Provided by NOAA (Beyond the National Weather Service) blog.ucs.org/science-blog...
blog.ucs.org
Ten Vital Services Provided by NOAA (Beyond the National Weather Service)
Far too much of the media coverage supporting NOAA only mentions one of many things they do: here are 10 more.
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Hakai Institute @hakai.org · 23/04/2025
New research on endangered sunflower sea stars (Pycnopodia helianthoides) was just highlighted in @nature.com. The study, led by Hakai Institute research scientist @rhizalyssa.bsky.social, shows Pycnopodia finding refuge from sea star wasting disease in BC's coastal fjords🔗 tinyurl.com/shzdtawj
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Hakai Institute @hakai.org · 16/04/2025
Mussel beds are vital to the health of rocky intertidal ecosystems. We recently sat down with two members of the Hakai geospatial team to learn how AI and deep learning are transforming mussel mapping and monitoring on BC's Central Coast. Read the full story 🔗 tinyurl.com/bdezt98t
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Alyssa Gehman @rhizalyssa.bsky.social · 03/04/2025
www.cbc.ca/news/canada/...
cbc.ca
9 out of 10 sunflower sea stars were wiped out — but B.C. researchers say fiords provided refuge | CBC News
B.C. researchers have found that the fiords of the Central Coast may be providing refuge for the critically endangered sunflower sea star, a discovery that could have implications for wider ecosystems...
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Alyssa Gehman @rhizalyssa.bsky.social · 03/04/2025
vancouver.citynews.ca/2025/04/02/c...
vancouver.citynews.ca
Critically endangered sunflower sea stars are seeking refuge in B.C. fiords
A new study says the cold-water fiords on British Columbia's central coast may hold a key to sea star survival.
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Reposted by Alyssa Gehman
Hakai Institute @hakai.org · 02/04/2025
A newly published study finds that sunflower sea stars (Pycnopodia helianthoides) threatened by sea star wasting disease (SSWD) are finding marine refuge in the freshwater snowmelt of deep, cold-water fjords on BCs central coast. Full press kit now available🔗https://tinyurl.com/534rsnrj
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Joshua Weitz @joshuasweitz.bsky.social · 28/03/2025
Working with an interdisciplinary team, we have developed a website to communicate how the White House's proposed cuts to health research would cause losses of $16B and 68,500 jobs. Find out how your community may be impacted. Explore more at SCIMaP: scienceimpacts.org a 🧵
US map via scienceimpacts.org visualization of economic loss due to IDC cuts to 15% as part of Feb 7, 2025 executive order, with shading denoting intensity of cuts.
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Ken Schwencke @schwanksta.com · 28/02/2025
Ted Cruz said he’d found $2 billion in “woke” science grants, but his team used keyword searches that flagged things out of context, like a grant to develop a device to treat severe bleeding that mentioned “victims” and “trauma.” www.propublica.org/article/ted-...
propublica.org
A Study of Mint Plants. A Device to Stop Bleeding. This Is the Scientific Research Ted Cruz Calls “Woke.”
The senator flagged thousands of National Science Foundation grants for using words like “female” and “diversify.” A ProPublica analysis found numerous examples of projects caught up in his crude meth...
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George Takei @georgetakei.bsky.social · 22/02/2025
And I am an ally. If you are too, let the world know.
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Minorities in Shark Sciences @misselasmo.bsky.social · 21/02/2025
Ending the week with a little motivation from our office mural. 💙 We hope you all have a great weekend. 🦈
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Sarah McAnulty, Ph.D. @sarahmackattack.bsky.social · 14/02/2025
Happy Valentine’s Day! Don’t forget to text your crush a squid fact today 😘
A bright pink purple and yellow squid is blushing with a little heart in its pupil, surrounded by little black inky hearts and is saying “I’ll make my mantle transparent to accentuate my gonads…for you” and then on top in shiny pink bubble letters it says “text your crush a squid fact”
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Hakai Institute @hakai.org · 13/02/2025
Hakai Institute researcher Alyssa Gehman is studying the impacts of sea star wasting disease on Pycnopodia helianthoides—sunflower sea stars. She recently traveled to central BC’s coastal fjords to explore whether these cold- water ecosystems could provide refuge for the endangered sea stars.
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Reposted by Alyssa Gehman
Apoorva Mandavilli @apoorvanyt.bsky.social · 06/02/2025
SCOOP: Cats that became infected with bird flu might have spread the virus to humans in the same household and vice versa, according to data that briefly appeared online in a report from the Centers for Disease Control and Prevention but then abruptly vanished. www.nytimes.com/2025/02/06/h...
nytimes.com
CDC Posts, Then Deletes, Data on Bird Flu Transmission Between Cats and People (Gift Article)
The data, which appeared fleetingly online on Wednesday, confirmed transmission in two households. Scientists called on the agency to release the full report.
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Sarah McAnulty, Ph.D. @sarahmackattack.bsky.social · 04/02/2025
This is how you do it. Thank you @sicbjournals.bsky.social Read their whole email to membership here mailchi.mp/sicb.org/sic...
an email from the society for integrative and comparative biology that reads "Attn SICB Members:
 

The past few weeks have been a stressful time in our scientific community, and we want to make our position clear: The Society for Integrative and Comparative Biology unequivocally condemns recent attacks on scientific integrity, funding for scientific research, and the importance of broadening participation in science."
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Varoon Supratya @varoon-supratya.bsky.social · 31/01/2025
My creative outlet is pottery, often inspired by seaweeds #phycologyfriday #phycology #kelp #marinebiology #science #art #pottery #sculpture #seaweed #ceramics
Seaweed themed ceramics arranged on a grey steel table. From left to right: two mugs with handles formed in the shape of bull kelp, a sculpture of the kelp Eisenia arborea, a pitcher with a bull kelp handle, and a mug with a Calliarthron (coralline red alga)
 handle
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Liz Neeley @lizneeley.bsky.social · 01/02/2025
And finally, this isn’t about exhaustive knowledge about what is happening - it’s about figuring out what to DO. We made an acronym to help us cope each time we feel our adrenaline spike. That & more in this week’s issue: buttondown.com/liminalcreat...
Emergency Response Checklist. Text says "When bad news hits, don’t freeze. When you’re SCARED, use it." Then it breaks down the acronym: SAFETY CHECK Look for immediate danger and ensure your own safety first. ASSESSMENT Just how bad are things now? (Think DEFCON readiness levels). RISK EVALUATION What is the threat to you? (Deportation? Getting sued? Being hacked?) DECIDE Now you know what to do first. Revisit according to your assessment. You’ve got this.
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Liz Neeley @lizneeley.bsky.social · 01/02/2025
Each week, we are collecting, reading, vetting & tagging all the links, news & rumors you’re seeing whiz past you online. We are also talking to dozens of researchers & PIs about their firsthand experiences. Every Friday, I debrief you over a drink at buttondown.com/liminalcreat...
buttondown.com
Making Sense of It All
Hi! I’m Liz Neeley and I’m glad you’re here. Making Sense of It All is an outlet for my work at Liminal, which focuses on sensemaking in a noisy and complicated world. I built Liminal as an antidote t...
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Colin Carlson @colincarlson.bsky.social · 15/01/2025
🚨😷🧪 NEW: A growing body of evidence shows that pandemics, biodiversity loss, and climate change are part of a broader polycrisis - but there are no simple solutions. A sweeping overview of "Pathogens and planetary change" for the first issue of @natrevbiodiv.bsky.social, out now 🔓 rdcu.be/d6lHl
Top panels: graphs showing increases in spillover events, extinction rates, and temperature anomalies over the last few centuries. Bottom panel: a map of 10 pandemics since the year 1900. Four were linked to agriculture, two to wildlife use, and one to climate change.
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Nature Reviews Biodiversity @natrevbiodiv.nature.com · 15/01/2025
Here we go! The first issue of Nature Reviews Biodiversity is now live🥳🎉🥂. Thank you to our authors, reviewers, and community for the support! We hope you enjoy the reading. www.nature.com/nrbd/volumes...
Two birds of different species looking at each other from different sides of a river
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Nora Salland @noramare.bsky.social · 13/01/2025
Hello🦋 Hoping for a nice platform to exchange science again. I'm a #kelp ecologist, finished my PhD last year on climate change impacts on kelp forests (🇬🇧 @thembauk.bsky.social, @dansmale1.bsky.social) & work now on microbes (🇨🇦 @ubcbotany.bsky.social, @hakaiinstitute.bsky.social).Happy kelpy times🌊🌱
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Hakai Institute @hakai.org · 28/11/2024
A new paper by Hakai Institute researchers points to bull kelp—those long whips seen on Pacific beaches—as an “ideal” biological indicator species for marine planning efforts in the Northern Shelf Bioregion. See the full paper 🔗https://tinyurl.com/9r3bub6e
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Alyssa Gehman @rhizalyssa.bsky.social · 25/12/2024
Made a sea star themed Christmas Cake. Excited to see how it tastes after a month of prep.
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Hakai Institute @hakai.org · 06/12/2024
Farming, aquaculture & population growth has increased nutrient overloads in the global ocean, which can lead to harmful algal blooms and dead zones—but monitoring is sparse. GEM-in-a-Box is aiming to fill the gaps, from Kenya to Malaysia to the Bahamas 🔗https://tinyurl.com/3nn6mxa4
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Konrad Kording @kordinglab.bsky.social · 11/11/2024
NSF makes you say who you got conflicts (coauthored) with. We (really just Jordan Matelsky) just built you a tool for that. Literally one click: bib.experiments.kordinglab.com/nsf-coa
bib.experiments.kordinglab.com
NSF COA | Jordan Matelsky
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Hakai Institute @hakai.org · 20/11/2024
On B.C.'s coast, an invasion of the European green crab is happening below the waves 🦀 Their destructive impact on nearshore ecosystems is setting off alarm bells— but Hakai scientists are deploying a new tool making it easier to detect these invaders 🔗 tinyurl.com/5xbhhahw
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bioGraphic @biographic.bsky.social · 25/11/2024
ICYMI, Hakai Magazine will be joining forces with bioGraphic. But we need your help to hit the ground running! Please help us raise $150K by Giving Tuesday on Dec 3. We’re a little over a third of the way there, and no amount is too small. 🐳💙 www.biographic.com/hakai-magazi...
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Hakai Institute @hakai.org · 25/11/2024
We're hiring! 📣The Hakai Institute is looking for an experienced Data Scientist and Developer to work closely with the oceanography team. View the full posting here 🔗 tinyurl.com/3a9dmed7
tinyurl.com
Data Scientist and Developer - Victoria, BC - Indeed.com
Tula Foundation
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