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Dr.Kat Stewart

@ecoevoedna.bsky.social
858 followers 683 following 110 posts

Assistant Professor @Leiden University; #environmentalDNA #eDNA, #conservationgenetics, evolutionary ecology, #invasivespecies, hybridization, e3dna.com | editor @Oikos | editor @Evolutionary Ecology |

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Reposted by Dr.Kat Stewart
Dr Angel Borja @drangelborja.bsky.social · 21/07/2026
A new #GES4SEAS paper, from past year summer school has been published. It deals with #MachineLearning #eDNA and #CitizenScience for marine monitoring #MarineEcology #Research www.frontiersin.org/articles/10....
frontiersin.org
Frontiers | Machine learning, eDNA and citizen science in monitoring and assessing biodiversity and invasive alien species at sea
This research outlines the integration of machine learning, citizen science, environmental DNA (eDNA), and other emerging technologies to enhance marine biod...
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Florian Altermatt @florianaltermatt.bsky.social · 17/07/2026
I am #hiring! In my group 📍Universität Zürich | University of Zurich & Eawag I have #two open #Postdoc #Positions, with application deadlines in early August 2026. 🧬 🦐 🐠🌐🌍 Here a quick reminder & 🧵with all details, thanks for 🔄 redistributing to interested candidates.
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Carmelo Fruciano @carmelofruciano.bsky.social · 15/07/2026
📢 We're hiring! A 1-year research fellowship in my lab @unict_it (in sunny Sicily 🌞🌊): #eDNA metabarcoding + #morphometrics/3D scanning to monitor invasive alien species. Broad search. Apply by 3 Aug. More details at www.fruciano.org/events/were-...
View of Mount Etna
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Florian Altermatt @florianaltermatt.bsky.social · 11/07/2026
#Postdoc #Position opening up in my group: Developing Analytical #Pipelines and #Analyses to Survey #Invasive Alien #Species in Aquatic Systems using #eDNA (2 years) 🧬 📈 ❗ 🦐 🦀 🐠 🌍🌐❗ #JobOpening 🎯 apply.refline.ch/673277/1364/... 📍 Apply now & thx for spreading the word (deadline Aug 14th)
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Physalia-courses@ONLINE @physaliacourses.bsky.social · 02/07/2026
🚨 New microgrant opportunity from @ednacollab.bsky.social Registration is now open for the next 2 weeks for our #eDNA with @nanoporetech.com workshop with @shump.bsky.social Don't miss this chance to receive support and join the training! Apply here: docs.google.com/forms/d/1Vnc...
docs.google.com
The eDNA Collaborative's 2026 Physalia Microgrant
Thank you for your interest in the eDNA Collaborative's 2026 Physalia Microgrant! This microgrant will be awarded in the form of an online course provided by Physalia Courses. Physalia provides scient...
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Reposted by Dr.Kat Stewart
eDNAqua-Plan Project @ednaquaplan.bsky.social · 25/06/2026
🧬🌊 eDNAqua-Plan's recommendations for a federated system of taxonomically curated reference libraries A critical step towards scaling (e)DNA-based monitoring & research for supporting evidence-based policy. 🔗 Explore the recommendations: tinyurl.com/46tkrsx4 #eDNA #DNA #Biodiversity @ec.europa.eu
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Dr.Kat Stewart @ecoevoedna.bsky.social · 22/06/2026
💨Air doesn't just carry DNA—it carries location information. We show that simple wind data can help pinpoint where vertebrate airborne eDNA comes from, bringing us closer to biomonitoring from the air with spatial precision! onlinelibrary.wiley.com/doi/10.1002/... #eDNA #Conservation #congen
onlinelibrary.wiley.com
Local Transport of Vertebrate Airborne eDNA Is Captured by Wind‐Directed Catchment Area Models
This novel study models local airborne eDNA transport using wind-directed catchment models. Results show 100% of species detections within 100 m of samplers originate from predicted downwind catchmen...
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Prof. Elizabeth Clare @profbatgirl.bsky.social · 11/06/2026
New paper from the lab on #eDNA sampling strategies for air. Well done Nina Garrett #womeninStem 🧪 . Sampling Intensity and Temporal Persistence of Airborne eDNA in Partially Enclosed Spaces - Garrett - 2026 - Environmental DNA - Wiley Online Library onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
Sampling Intensity and Temporal Persistence of Airborne eDNA in Partially Enclosed Spaces
The majority of species richness was detected using as little as four samplers in this enclosed space and the greater the number of sampling events, the fewer samplers were needed. eDNA also appeared...
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Alex Fraik @akfraik.bsky.social · 14/05/2026
The US Forest Service National Genomics Center is hiring an eDNA lab technician! Come work with us on cool genetics projects in Missoula #ConsGen #eDNA
paycomonline.net
Environmental DNA Lab Technician
...
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Alex Fraik @akfraik.bsky.social · 20/05/2026
Another fisheries #consgen job alert! The Northern Gulf Institute at Mississippi State University is seeking a Postdoctoral Associate to lead the development and application of molecular assays to support fisheries and biodiversity monitoring #eDNA
explore.msujobs.msstate.edu
Careers | MSU Jobs
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Heike Zimmermann @heikezimm.bsky.social · 04/05/2026
We are looking for a motivated student helper to join our international group at #GEUS, #Copenhagen Deadline 20.5.2026 Tasks: sample preparations, analysis of #climate #proxies, #eDNA and #ancientDNA, #microscopy, fieldwork prep… Please, spread the word!🦑 candidate.hr-manager.net/ApplicationI...
candidate.hr-manager.net
Studentermedhjælper – Arktisk klima- og havforskning
Vi søger en motiveret studentermedhjælper til at støtte forskningsaktiviteter i vores forskningsgruppe inden for arktisk klima og marine økosystemer ved De Nati
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Dr.Kat Stewart @ecoevoedna.bsky.social · 04/05/2026
🔥Population genetic inferences from #eDNA going strong 💪: check out my lab's recent work on screening for hybrid zones using nuclear SNPs #conservationbiology onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
Hybrid Horizons: Screening Hybridisation Through Nuclear Environmental DNA
Effective monitoring of hybrid zones is essential for understanding evolutionary dynamics and mitigating species loss caused by human-mediated hybridisation. Conventional methods rely on sampling num...
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The Mariani Lab @marianilab.bsky.social · 20/01/2026
Maybe there’s no better “natural #eDNA sampler” than a sponge. But here we show why #jellyfish maybe also deserve some consideration: link.springer.com/article/10.1... @craigwilding.bsky.social @ljmubiocon.bsky.social #OGS #Trieste #Miramare
Four species of jellyfish used to extract environmental DNA
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Amalia Mailli @amaliamailli.bsky.social · 20/01/2026
We are organising a great Summer School on eDNA and Invasive Species at NORD University in Bodø, Norway! Submissions are open, take a look below! #eDNA #InvasiveAlienSpecies #GuardIAS
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Emilie A. Didaskalou @eadidaskalou.bsky.social · 22/12/2025
Proudly presenting the 1st chapter of my PhD as my 1st bluesky post!
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Dr.Kat Stewart @ecoevoedna.bsky.social · 20/12/2025
🔥 Hot off the press: ever wonder if you could get demographic info for natural pops with #eDNA #environmentalDNA? Well wonder no more! First proof of principle for sex-ratios coming to a computer screen near you: onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
Unlocking Demography: Developing an eDNA‐Based Toolkit to Measure Sex Ratios From Populations
Demographic information, such as sex ratios, is essential for understanding population dynamics and informing conservation strategies. Yet obtaining sex ratios in natural populations can be challengi....
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Dr.Kat Stewart @ecoevoedna.bsky.social · 10/11/2025
Submitting a symposia application for #eccb2026 on transdisciplinary applications of #eDNA research, focusing on stakeholder integration. If you’d like to present in this symposia and are already planning to attend, message me before Friday!
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Tim Adriaens @adriaenstim.bsky.social · 16/09/2025
SAVE THE DATE #Neobiota2026 is coming to Brussels Leave your contact details www.neobiota2026.org
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Dr.Kat Stewart @ecoevoedna.bsky.social · 15/09/2025
Come visit us at Leiden University for ECCB2026!
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Patrick Nichols @saltwaterpatrick.bsky.social · 25/08/2025
Can we circumvent the cumbersome filtration of #edna from seawater to detect rare taxa? Yes! Passively deploying simple cost-effective cotton membranes can, with trade-offs of course. @sednasociety.bsky.social doi.org/10.7717/peer...
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Dr Joanne Littlefair @jlittlefair.bsky.social · 01/08/2025
A great FAIR (Findable, Accessible, Interoperable, Resuseable) hosted by Miwa Takahashi of CSIRO, @lynseyrharper.bsky.social @nidunn.bsky.social last Friday. Recording great metadata for #eDNA studies, #futureproof
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EuroMarine OYSTER @em-oyster.bsky.social · 29/07/2025
⛴️🌊OceanX is seeking a #post-doctoral associate in the field of marine #eDNA and meta #genomics ⏳unspecified deadline 👉More info: buff.ly/GXVsEfV
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Jonathan Tonkin @jdtonkin.bsky.social · 27/06/2025
And their ecological impacts are much more widespread and diverse than is often communicated. Here, I try to put the record straight. I do so while describing a recent paper of ours that introduces a new categorisation of 19 impacts types that invasive species have across ecological hierarchies.
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David Nogués Bravo @noguesbravo.bsky.social · 30/06/2025
Would you like to come to work with us here at @Macroecology ? The Center is opening six new positions! macroecology.ku.dk/people/posit...
macroecology.ku.dk
Open Positions
Positions and vacancies at the Center for Macroecology, Evolution and Climate
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Allan McDevitt @shrewgod.bsky.social · 24/06/2025
New paper out from our crew on using #eDNA to detect the pathogenic chytrid fungus (Bsal) and characterise the surrounding amphibian community from pond samples in the Netherlands. Small number of samples but highlights the potential of eDNA for routine monitoring of both. bioone.org/journals/jou...
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Javier Santoyo @jsantoyo.bsky.social · 03/06/2025
Shotgun sequencing of airborne eDNA achieves rapid assessment of whole biomes, population genetics and genomic variation. #eDNA #ShotgunSequencing #PopulationGenetics #GenomicVariation #Genomics #Bioinformatics @natecoevo.nature.com‬ 🧬 🖥️ www.nature.com/articles/s41...
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Matthew A. Barnes @drbarnes.org · 04/06/2025
Proud of this new publication demonstrating #eDNA as a useful accessory to invasive species management in practice. In this case, we observed eDNA declines coinciding with community-led apple snail removal from an Austin, Texas pond. www.reabic.net/journals/mbi...
reabic.net
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Dr.Kat Stewart @ecoevoedna.bsky.social · 02/06/2025
🎇New paper alert GENETIC POLLUTION-caused by human-driven hybridization-is more widespread and dangerous than you think. With modern DNA tools, we can act BUT policy must catch up fast! Read more: link.springer.com/article/10.1... #conservation #biodiversity #biosecurity #conservationgenetics
link.springer.com
Scientists’ warning on genetic pollution - Discover Conservation
Genetic pollution (i.e. anthropogenic hybridization) is insidious; it is a worryingly common problem that should be taken more seriously. Advances in DNA sequencing technologies make it possible to ob...
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Reposted by Dr.Kat Stewart
Moler @envdna.bsky.social · 29/05/2025
Developing terrestrial environmental DNA sampling methods for detecting arboreal invasive reptiles: a case study of the green anole in the Ogasawara Island, Japan #eDNA #environmentalDNA www.biorxiv.org/content/10.1...
biorxiv.org
Developing terrestrial environmental DNA sampling methods for detecting arboreal invasive reptiles: a case study of the green anole in the Ogasawara Island, Japan
Early detection of invasive alien species is essential for preventing establishment and mitigating ecological impacts, particularly in island ecosystems harbouring evolutionarily isolated endemic spec...
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Roman Goergen @romangoergen.bsky.social · 09/05/2025
🦈 Offshore wind farms may offer safe zones for sharks & rays.🌍 Dutch researchers found eDNA of 5 species, incl. basking sharks, in turbine areas.🧪 Bans on bottom trawling could help marine life rebound.🌐 #Sharks #eDNA #Marinelife #Conservation #wildlife oceanographicmagazine.com/news/are-off...
oceanographicmagazine.com
Are offshore wind farms the next safe spaces for sharks and rays? - Oceanographic
New eDNA evidence has confirmed the presence of active shark and rays around Dutch offshore wind farms, posing an exciting new question.
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Dr.Kat Stewart @ecoevoedna.bsky.social · 06/05/2025
After 4 year as a subject editor for @oikosjournal.bsky.social I am stepping away to focus more on my students and teaching. It’s been fun and educational! I’d definitely recommend it. If anyone qualified in the #eDNA sphere is looking to be an editor, let me know and I can pass along your info.
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Holly Broadhurst @hollybroadhurst.bsky.social · 05/05/2025
Our review is finally here! We include all the terrestrial and semi-aquatic mammal-focused #eDNA and #iDNA studies available up to Jan 2025! It's amazing to see how far this field has come 🧬🦦
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Metabarcoding and Metagenomics @mbmg.pensoft.net · 02/05/2025
🧬 Calling all #eDNA and #EnvironmentalOmics enthusiasts! At the AquaEcOmics meeting, 35 international experts discussed forming a European Society for Environmental Omics (ESEO) to strengthen collaboration across the field. 🧵(1/4)
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Dr.Kat Stewart @ecoevoedna.bsky.social · 30/04/2025
We (many across NL) just received a large infrastructure grant to create a network of SMART aquatic research hubs. Worth €4.2 million, #eDNA will form a decent portion of this, bringing the Netherlands capacity for aquatic experimentation higher. www.universiteitleiden.nl/en/news/2025...
universiteitleiden.nl
Funding boost for the Living Lab and other outdoor laboratories
A consortium of research infrastructures focused on water quality has received €4.18 million in funding from the Dutch Research Council (NWO). This grant will support the transformation of outdoor lab...
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Dr.Kat Stewart @ecoevoedna.bsky.social · 29/04/2025
Interested in establishing a European Society for Environmental Omics? Let your voice be heard #eDNA folks!
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🍁 Alex Smith 🍁 @alexsmithants.bsky.social · 16/04/2025
🧪 Student Opportunity!! Interested in using #eDNA to rediscovering lost #amphibian species in Área de Conservación Guanacaste, Costa Rica? Check out this opportunity led by @rpuschen.bsky.social and join us working with #ACG and @gdfcf.bsky.social 🔗 Info: www.plymouth.ac.uk/study/resear... 🧪
Rediscovering Lost Amphibians: Using eDNA to Detect Critically Endangered Frogs in Área de Conservación Guanacaste, Costa RicaProject description
Amphibians are among the most threatened vertebrates globally, with many species feared extinct due to habitat loss and emerging infectious diseases. However, some populations may persist undetected in remote and biodiverse regions like Área de Conservación Guanacaste (ACG), Costa Rica. This project will harness the power of environmental DNA (eDNA) to rediscover critically endangered Neotropical amphibians, including harlequin toads (Atelopus spp.), stream-breeding tree frogs (Hylidae), and elusive Neotropical salamanders (Plethodontidae).
By collecting and analyzing water samples from pristine and historically occupied streams, we will identify traces of amphibian DNA, offering a non-invasive and highly sensitive tool for species detection. The project will refine eDNA sampling methodologies for tropical environments, bridging conservation science and molecular ecology to inform targeted conservation action.
This ResM project is run in collaboration with Área de Conservación Guanacaste and the Guanacaste Dry Forest Conservation Fund (GDFCF), ensuring strong local conservation impact. The successful student will gain expertise in eDNA techniques, bioinformatics, and amphibian ecology while working in one of the most ecologically significant regions of Central America. This project has direct conservation applications, helping guide habitat protection and management strategies to safeguard rediscovered amphibian populations.Eligibility
Applicants should have a first or upper second-class honours degree in a relevant subject such as biological sciences, molecular ecology, conservation biology, or a related discipline. A relevant Master’s qualification is desirable but not essential.
This project is primarily laboratory-based, and applicants should have experience or a strong interest in molecular techniques, particularly environmental DNA (eDNA) analysis, PCR, and bioinformatics. Experience with DNA extraction, qPCR, metabarcoding, and sequence data analysis is advantageous. A background in amphibian ecology, conservation genetics, or freshwater ecology would also be beneficial.
The ideal candidate will be highly motivated, detail-oriented, and comfortable working with environmental samples in a molecular laboratory setting. Strong analytical skills and the ability to work independently while collaborating with conservation partners are essential.
If your first language is not English, you must meet the minimum English language requirements for the programme: an IELTS Academic score of 6.5 (with no less than 5.5 in each component test area) or an equivalent qualification.
The project is supported for 1.5 years and covers full tuition fees only.
If you wish to discuss this project further informally, please contact Dr Robert Puschendorf by email: robert.puschendorf@plymouth.ac.uk.
Please see our 
apply for a postgraduate research programme
 page for a list of supporting documents to upload with your application.
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Kristy Deiner @alpineedna.bsky.social · 09/04/2025
What is nature vs biodiversity, how is #eDNA useful, and what is that corporate food chain that is waking up the risks posed by loss of #biodiversity? This podcast covers it all --> www.imd.org/ibyimd/podca...
imd.org
Can eDNA revolutionize biodiversity monitoring? - I by IMD
Explore eDNA science with Kristy Deiner on the IMD Management Cast . Learn how genetics, biodiversity, and data analytics shape conservation and the bioeconomy.
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Auriel Sumner-Hempel @aurielesumner.bsky.social · 10/04/2025
📣Excited to share that our new #paper is out! Using #eDNA #metabarcoding to detect #elasmobranchs in #OWFs in the North Sea🦈🦈 www.sciencedirect.com/science/arti... @reindertn.bsky.social @nanoporetech.com
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The Mariani Lab @marianilab.bsky.social · 08/04/2025
Juicy #eDNA #postdoc opportunities in #Denmark: urldefense.com/v3/__https:/...
urldefense.com
Postdoc in analysis of Environmental DNA - DTU Aqua
The application of Environmental DNA (eDNA) for aquatic biodiversity assessment and fisheries management is progressing rapidly. If you see yourself at the forefront of this development and are intere...
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Hugo Gante @hugogante.bsky.social · 01/04/2025
And before the day ends, perhaps my most anticipated paper: onlinelibrary.wiley.com/doi/full/10.... #eDNA #metagenomics applied to *all* organisms, including (and especially) macroorganisms/eukaryotes See how to and shoot me an email if you want to know more. - species IDs - eDNA decay
onlinelibrary.wiley.com
Improving Whole Biodiversity Monitoring and Discovery With Environmental DNA Metagenomics
Environmental DNA (eDNA) metagenomics sequences all DNA molecules present in environmental samples and has the potential of identifying virtually any organism from which they are derived. However, du...
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Dr.Kat Stewart @ecoevoedna.bsky.social · 30/03/2025
New preprint alert: we present a new PASSIVE air #eDNA sampler that outperforms two commonly used active samplers. Our passive approach detected species up to 500+meters away and showed association with species biomass www.biorxiv.org/content/10.1...
biorxiv.org
A breath of fresh air: comparative evaluation of passive versus active airborne eDNA sampling strategies
The rapid decline of terrestrial biodiversity worldwide demands for expansion of high-resolution biomonitoring to support science-based policy. Environmental DNA (eDNA) analysis has proven effective a...
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Tomas Marques Bonet @tmarquesbonet.bsky.social · 27/03/2025
PhD opportunity! The Comparative Genomics lab (@IBE_Barcelona, @UPFBarcelona) is seeking a PhD student to work on environmental DNA & mammalian conservation together with @estherlizano ! apply now! CVs -> cvtmblab@gmail.com #PhD #genomics #eDNA #conservation #Barcelona
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Dr.Kat Stewart @ecoevoedna.bsky.social · 21/03/2025
@aquaecomics.mastodon.social.ap.brid.gy might be over but already anticipating another! Incredibly proud of Dani Zumel and Emilie Didaskalou for presenting innovative popgen #eDNA research. The future landscape is bright 🙌
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Dr.Kat Stewart @ecoevoedna.bsky.social · 20/03/2025
Great windfarm - elasmobrach #eDNA research by Auriel Summer-Hempel @reindertn.bsky.social @aquaecomics.mastodon.social.ap.brid.gy
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Bettina Thalinger @bettinathal.bsky.social · 20/03/2025
Rein Brys providing amazing examples for #eDNA as an #invasive species detection tool! #aquaecomics @aquaecomics.mastodon.social.ap.brid.gy
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Dr.Kat Stewart @ecoevoedna.bsky.social · 18/03/2025
Here we go! @aquaecomics.mastodon.social.ap.brid.gy #eDNA
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Kristy Deiner @alpineedna.bsky.social · 13/03/2025
#eDNA job alert!!
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Ocean Diagnostics Inc. @oceandiagnostics.bsky.social · 13/03/2025
For anyone who’s tried it, you will know that #environmentalDNA field sampling can be logistically and physically tough. We’ve designed a self-priming pump with enough vacuum pressure to pump litres of water over #eDNA filters and avoid sample contamination. Reach out to learn more! 🌊 🧬
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Kristy Deiner @alpineedna.bsky.social · 07/03/2025
Well a new adventure is about to start! This week was my first as fulltime CEO at SimplexDNA. I am excited to have made the jump from academia to empower the use of #eDNA technology throughout the world.While lots of papers will come out from my ETH years, I say goodbye to the 'Professor' title
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Pedro Brandão-Dias F Pinto @pedrobd.bsky.social · 04/03/2025
New paper alert! 🚨- My final PhD chapter is finally out! What happens to different eDNA components in water? 🌊💧 We tested particle size (small vs. large) and DNA molecule length (86 vs. 387 bp) in recirculating streams—and what we found might surprise you! 🧵👇 #eDNA #MolecularEcology 🔗 Read more:
onlinelibrary.wiley.com
Comparing the Fate of eDNA by Particle Sizes and Molecule Lengths in Recirculating Streams
The detection of environmental DNA (eDNA) has revolutionized aquatic species monitoring, yet interpreting eDNA data remains challenging due to gaps in our understanding of eDNA ecology (i.e., origin,...
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