Pedro Brandão-Dias F Pinto
@pedrobd.bsky.social
Biologist, molecular ecologist🧑🔬 , eDNA nerd 🧬, birder 🐦, coin collector 🪙, insect enjoyer 🐜, Brazilian mineiro, and more.
Currently a Postdoc in the Kelly Lab at UW.
Currently a Postdoc in the Kelly Lab at UW.
🧬 My haplotype paper is out!
We show that deviations between within-sample and population-level haplotype frequencies can be used to estimate how many individuals contributed to an eDNA sample.
No tissue references needed, just metabarcoding data and some population genetics.
#eDNA #PopGen
We show that deviations between within-sample and population-level haplotype frequencies can be used to estimate how many individuals contributed to an eDNA sample.
No tissue references needed, just metabarcoding data and some population genetics.
#eDNA #PopGen
Estimating Organism Abundance Using Within‐Sample Haplotype Frequencies of eDNA Data
Environmental DNA (eDNA) provides powerful insights into species presence and community composition but remains limited in its capacity to infer species abundance or population structure. Here, we sh...
onlinelibrary.wiley.com
February 13, 2026 at 4:54 PM
Imagine the great quotes we would get if Darwin had to code!
Found an additional graphic that gets even more of these quotes together.
I've kept "I hate myself, I hate clover, and I hate bees" pinned above my desk since I first started studying evolutionary biology as an undergraduate. So relatable to get extremely frustrated with your study system.
I've kept "I hate myself, I hate clover, and I hate bees" pinned above my desk since I first started studying evolutionary biology as an undergraduate. So relatable to get extremely frustrated with your study system.
February 12, 2026 at 9:14 PM
Imagine the great quotes we would get if Darwin had to code!
My high school math teacher was great but convinced I should not become a biologist because "my math intuition would be wasted!"
I just got a paper accepted with 10 equations plus more in the supplement 💀.
Pretty sure he would be happy but relieved they are printed and not in my handwriting 😄✍️📄
I just got a paper accepted with 10 equations plus more in the supplement 💀.
Pretty sure he would be happy but relieved they are printed and not in my handwriting 😄✍️📄
February 5, 2026 at 7:07 PM
My high school math teacher was great but convinced I should not become a biologist because "my math intuition would be wasted!"
I just got a paper accepted with 10 equations plus more in the supplement 💀.
Pretty sure he would be happy but relieved they are printed and not in my handwriting 😄✍️📄
I just got a paper accepted with 10 equations plus more in the supplement 💀.
Pretty sure he would be happy but relieved they are printed and not in my handwriting 😄✍️📄
Reposted by Pedro Brandão-Dias F Pinto
New paper by Cristina Claver (@azti.bsky.social), published in @icesmarine.bsky.social JMS.
We combine #eDNA and acoustic-trawl data in a Bayesian joint model to estimate biomass of the European anchovy in the Bay of Biscay.
From the potential of eDNA to operational use
🔗 doi.org/10.1093/ices...
We combine #eDNA and acoustic-trawl data in a Bayesian joint model to estimate biomass of the European anchovy in the Bay of Biscay.
From the potential of eDNA to operational use
🔗 doi.org/10.1093/ices...
Integrating eDNA and acoustic-trawl data to provide small pelagic biomass estimates for fish stock assessment
Abstract. Accurate abundance estimates of fisheries resources are essential for sustainable fisheries management. In response to the growing need for devel
doi.org
February 2, 2026 at 10:02 AM
New paper by Cristina Claver (@azti.bsky.social), published in @icesmarine.bsky.social JMS.
We combine #eDNA and acoustic-trawl data in a Bayesian joint model to estimate biomass of the European anchovy in the Bay of Biscay.
From the potential of eDNA to operational use
🔗 doi.org/10.1093/ices...
We combine #eDNA and acoustic-trawl data in a Bayesian joint model to estimate biomass of the European anchovy in the Bay of Biscay.
From the potential of eDNA to operational use
🔗 doi.org/10.1093/ices...
Reposted by Pedro Brandão-Dias F Pinto
Big milestone today: My first PhD paper is officially out! We took a deep dive into eDNA transport dynamics in flowing waters. Check out the full study in ES&T.
pubs.acs.org/doi/full/10....
pubs.acs.org/doi/full/10....
Laboratory Study on Fate and Transport of Water-Borne eDNA: A Tale of Tempered Tails and Parafluvial Processes
Environmental DNA (eDNA) has emerged as a powerful marker for assessing species presence in flowing waters; however, estimating the spatial and temporal origins of these signals remains a challenge. T...
pubs.acs.org
February 3, 2026 at 3:52 AM
Big milestone today: My first PhD paper is officially out! We took a deep dive into eDNA transport dynamics in flowing waters. Check out the full study in ES&T.
pubs.acs.org/doi/full/10....
pubs.acs.org/doi/full/10....
Me when I see a juvenile gull in the Pacific Northwest on an impatient day:
NOPE
~confidently logs Gull sp. on eBird~
Me on a patient day:
stares at juvenile gull for 10 minutes
“Yeah… that’s definitely a Gull sp.”
✔️ eBird submitted
#birding
NOPE
~confidently logs Gull sp. on eBird~
Me on a patient day:
stares at juvenile gull for 10 minutes
“Yeah… that’s definitely a Gull sp.”
✔️ eBird submitted
#birding
a white seagull with a yellow beak is standing on a green roof with failarmy written on the bottom
ALT: a white seagull with a yellow beak is standing on a green roof with failarmy written on the bottom
media.tenor.com
January 29, 2026 at 7:49 PM
Me when I see a juvenile gull in the Pacific Northwest on an impatient day:
NOPE
~confidently logs Gull sp. on eBird~
Me on a patient day:
stares at juvenile gull for 10 minutes
“Yeah… that’s definitely a Gull sp.”
✔️ eBird submitted
#birding
NOPE
~confidently logs Gull sp. on eBird~
Me on a patient day:
stares at juvenile gull for 10 minutes
“Yeah… that’s definitely a Gull sp.”
✔️ eBird submitted
#birding
We are on!
Air 🌬️
Sea spray 💦
Surface 🌊
3000 m deep ⚓
~1 million DNA molecules/hour
sequenced live in the middle of the Pacific Ocean!
Shout out to Aden and Rhonda,l who can extract DNA, PCR, and library prep without getting seasick ⛵️
From sample to data in less than 48 hrs.
#eDNA #nanopore #UW
Air 🌬️
Sea spray 💦
Surface 🌊
3000 m deep ⚓
~1 million DNA molecules/hour
sequenced live in the middle of the Pacific Ocean!
Shout out to Aden and Rhonda,l who can extract DNA, PCR, and library prep without getting seasick ⛵️
From sample to data in less than 48 hrs.
#eDNA #nanopore #UW
January 17, 2026 at 1:57 AM
January 15, 2026 at 7:49 PM
Sunrise CTD cast!! This one went right inside the Toto caldera, which is an underwater volcano 🌋!
We found the volcano did have a plume (meaning it is activelly erupting) - I got to see scientists cheering to a live feed of data when the plume appeared. NASA landing style 🚀👩🚀 #Cruise #Volcano
We found the volcano did have a plume (meaning it is activelly erupting) - I got to see scientists cheering to a live feed of data when the plume appeared. NASA landing style 🚀👩🚀 #Cruise #Volcano
January 13, 2026 at 10:27 PM
We call this trick "we forgot to pack a heatblock and now we have to improvise with a hotplate and sand".
It is walnut shell sand. Smells nice.
It is walnut shell sand. Smells nice.
January 10, 2026 at 3:21 AM
We call this trick "we forgot to pack a heatblock and now we have to improvise with a hotplate and sand".
It is walnut shell sand. Smells nice.
It is walnut shell sand. Smells nice.
Our first #CRESST CTD cast is out!
A CTD is a rosette sampler full of sensors and water bottles. We can monitor sensors live and trigger the closure of each bottle from aboard as it comes back up through the water column (deep to shalow).
We don't have much time, so this cast was only to 200m.
A CTD is a rosette sampler full of sensors and water bottles. We can monitor sensors live and trigger the closure of each bottle from aboard as it comes back up through the water column (deep to shalow).
We don't have much time, so this cast was only to 200m.
January 9, 2026 at 5:44 AM
Our first #CRESST CTD cast is out!
A CTD is a rosette sampler full of sensors and water bottles. We can monitor sensors live and trigger the closure of each bottle from aboard as it comes back up through the water column (deep to shalow).
We don't have much time, so this cast was only to 200m.
A CTD is a rosette sampler full of sensors and water bottles. We can monitor sensors live and trigger the closure of each bottle from aboard as it comes back up through the water column (deep to shalow).
We don't have much time, so this cast was only to 200m.
After a 7 day delay, we are finally on board of the RV Thomas G. Thompson! Getting ready for 14 days of #eDNA data collection and lab work going from #Philippines towards #Guam
It is a data deficient area, so I will also be making the first ever pelagic bird surveys of this region.🐦⬛🐦 #unqualified
It is a data deficient area, so I will also be making the first ever pelagic bird surveys of this region.🐦⬛🐦 #unqualified
January 5, 2026 at 5:14 AM
After a 7 day delay, we are finally on board of the RV Thomas G. Thompson! Getting ready for 14 days of #eDNA data collection and lab work going from #Philippines towards #Guam
It is a data deficient area, so I will also be making the first ever pelagic bird surveys of this region.🐦⬛🐦 #unqualified
It is a data deficient area, so I will also be making the first ever pelagic bird surveys of this region.🐦⬛🐦 #unqualified
January 5, 2026 at 1:40 AM
I was recently humbled by the presence of the type specimen of the first bird ever.
The #Archeopteryx is truly a magical thing.
This object here defines what a bird🐓 is.
The #Archeopteryx is truly a magical thing.
This object here defines what a bird🐓 is.
December 19, 2025 at 8:16 PM
I was recently humbled by the presence of the type specimen of the first bird ever.
The #Archeopteryx is truly a magical thing.
This object here defines what a bird🐓 is.
The #Archeopteryx is truly a magical thing.
This object here defines what a bird🐓 is.
Marion, idk who you are, but you are very funny.
December 19, 2025 at 8:06 PM
Marion, idk who you are, but you are very funny.
We put this out as a preprint so the community can help pressure-test it. If we missed your work, misinterpreted something, or if you have data that alters any conclusion, please tell us. This only gets better with more eyes on it!
#eDNA #Molecularecology #Ecology
#eDNA #Molecularecology #Ecology
Wouldn’t it be kind of wild if someone actually pulled everything we know about what happens to eDNA between shedding and detection?
Decay, transport, microbes, temperature, rivers, oceans, all of it?!
We did that.
📄 Preprint link: www.researchsquare.com/article/rs-8...
🧬🔍🌊
#eDNA #MolecularEcology
Decay, transport, microbes, temperature, rivers, oceans, all of it?!
We did that.
📄 Preprint link: www.researchsquare.com/article/rs-8...
🧬🔍🌊
#eDNA #MolecularEcology
Fate and transport of environmental DNA: mapping the knowns and unknowns
The use of environmental DNA (eDNA) in routine biomonitoring is transforming our ability to detect and quantify aquatic species. However, translating these indirect molecular detections into ecologica...
www.researchsquare.com
December 12, 2025 at 4:42 PM
We put this out as a preprint so the community can help pressure-test it. If we missed your work, misinterpreted something, or if you have data that alters any conclusion, please tell us. This only gets better with more eyes on it!
#eDNA #Molecularecology #Ecology
#eDNA #Molecularecology #Ecology
Wouldn’t it be kind of wild if someone actually pulled everything we know about what happens to eDNA between shedding and detection?
Decay, transport, microbes, temperature, rivers, oceans, all of it?!
We did that.
📄 Preprint link: www.researchsquare.com/article/rs-8...
🧬🔍🌊
#eDNA #MolecularEcology
Decay, transport, microbes, temperature, rivers, oceans, all of it?!
We did that.
📄 Preprint link: www.researchsquare.com/article/rs-8...
🧬🔍🌊
#eDNA #MolecularEcology
Fate and transport of environmental DNA: mapping the knowns and unknowns
The use of environmental DNA (eDNA) in routine biomonitoring is transforming our ability to detect and quantify aquatic species. However, translating these indirect molecular detections into ecologica...
www.researchsquare.com
December 12, 2025 at 4:33 PM
Wouldn’t it be kind of wild if someone actually pulled everything we know about what happens to eDNA between shedding and detection?
Decay, transport, microbes, temperature, rivers, oceans, all of it?!
We did that.
📄 Preprint link: www.researchsquare.com/article/rs-8...
🧬🔍🌊
#eDNA #MolecularEcology
Decay, transport, microbes, temperature, rivers, oceans, all of it?!
We did that.
📄 Preprint link: www.researchsquare.com/article/rs-8...
🧬🔍🌊
#eDNA #MolecularEcology
There is a list of modern issues that have to be outlawed/regulated by ALL countries around the world ASAP, but people are too busy discussing non-issues.
This is somewhere at the top of that list.
This is somewhere at the top of that list.
What in the everloving—and I can’t stress this enough—FUCK
December 12, 2025 at 4:25 AM
There is a list of modern issues that have to be outlawed/regulated by ALL countries around the world ASAP, but people are too busy discussing non-issues.
This is somewhere at the top of that list.
This is somewhere at the top of that list.
Packing for the #CRESST research cruise and preparing a manifest was not easy.
The neat part is we will have a full #eDNA workflow going in the ship itself - sampling, extraction, PCR, sequencing, and bioinformatics!
Our hopes are resting on many ways to tie things down 🪢 and seasickness pills!
The neat part is we will have a full #eDNA workflow going in the ship itself - sampling, extraction, PCR, sequencing, and bioinformatics!
Our hopes are resting on many ways to tie things down 🪢 and seasickness pills!
December 11, 2025 at 4:34 AM
Cool study, but the projections are🤪.
-They predict fewer birds than we already have.
-The Bayesian model goes off the rails.
-Including prokaryotes is questionable as "species" hardly applies.
Any species-count model that doesn`t have # of active taxonomists as a factor will be just broken.
-They predict fewer birds than we already have.
-The Bayesian model goes off the rails.
-Including prokaryotes is questionable as "species" hardly applies.
Any species-count model that doesn`t have # of active taxonomists as a factor will be just broken.
Fascinated to learn that we are still discovering new species at the highest rate ever. Mapping Earth's biodiversity is far from over, and while we learn more and more about it, let's protect what we do know as well as we can!
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
The past and future of known biodiversity: Rates, patterns, and projections of new species over time
The number of known species on Earth is increasing rapidly, suggesting unexpectedly large numbers of many groups.
www.science.org
December 8, 2025 at 7:45 PM
Cool study, but the projections are🤪.
-They predict fewer birds than we already have.
-The Bayesian model goes off the rails.
-Including prokaryotes is questionable as "species" hardly applies.
Any species-count model that doesn`t have # of active taxonomists as a factor will be just broken.
-They predict fewer birds than we already have.
-The Bayesian model goes off the rails.
-Including prokaryotes is questionable as "species" hardly applies.
Any species-count model that doesn`t have # of active taxonomists as a factor will be just broken.
Every time I have to write "°C" I just google "degrees celsius" and copy the ° symbol. Same for μ! . Sure, I can insert symbols, but it feels faster! I can`t be the only one, right?
December 3, 2025 at 9:36 PM
Every time I have to write "°C" I just google "degrees celsius" and copy the ° symbol. Same for μ! . Sure, I can insert symbols, but it feels faster! I can`t be the only one, right?