Chris Powers
@ccpowers.bsky.social
Research Biologist at NOAA PEMAD | Researching eDNA, fisheries, and generally molecular ecology.
Views are my own
Views are my own
Very cool to have a more refined taxonomic threshold library. This also highlights the need to examine phylogenetic signals or sequence composition.
% similarity can only take you so far because it ignores context!
% similarity can only take you so far because it ignores context!
This is great - we a huge need in the #eDNA community to have data-informed standards for eDNA identity cutoffs, not just the bog-standard 97%
besjournals.onlinelibrary.wiley.com/doi/full/10....
For Chordata there is no cutoff that leads to 0% error when assigning species!! (Table S4)
besjournals.onlinelibrary.wiley.com/doi/full/10....
For Chordata there is no cutoff that leads to 0% error when assigning species!! (Table S4)
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
August 30, 2025 at 11:41 AM
Very cool to have a more refined taxonomic threshold library. This also highlights the need to examine phylogenetic signals or sequence composition.
% similarity can only take you so far because it ignores context!
% similarity can only take you so far because it ignores context!
Excited to announce that Chapter 2 from my thesis, wherein i accidentally take a very fun detour away from 'omics, is live!
www.frontiersin.org/journals/mic...
#Foraminifera #oceanacidification #oa #tomography
www.frontiersin.org/journals/mic...
#Foraminifera #oceanacidification #oa #tomography
July 10, 2025 at 10:54 AM
Excited to announce that Chapter 2 from my thesis, wherein i accidentally take a very fun detour away from 'omics, is live!
www.frontiersin.org/journals/mic...
#Foraminifera #oceanacidification #oa #tomography
www.frontiersin.org/journals/mic...
#Foraminifera #oceanacidification #oa #tomography
Reposted by Chris Powers
Let’s standardise upload + archival of #eDNA data to relevant repositories with the new FAIR #eDNA (FAIRe) guidelines 🧚🧬🌍Fantastic work by Miwa Takahashi and coauthors!
📄 Read the paper: onlinelibrary.wiley.com/doi/10.1002/...
🔧 Get updates and new tools via the FAIRe website: fair-edna.github.io
📄 Read the paper: onlinelibrary.wiley.com/doi/10.1002/...
🔧 Get updates and new tools via the FAIRe website: fair-edna.github.io
FAIR eDNA
fair-edna.github.io
June 10, 2025 at 8:25 AM
Let’s standardise upload + archival of #eDNA data to relevant repositories with the new FAIR #eDNA (FAIRe) guidelines 🧚🧬🌍Fantastic work by Miwa Takahashi and coauthors!
📄 Read the paper: onlinelibrary.wiley.com/doi/10.1002/...
🔧 Get updates and new tools via the FAIRe website: fair-edna.github.io
📄 Read the paper: onlinelibrary.wiley.com/doi/10.1002/...
🔧 Get updates and new tools via the FAIRe website: fair-edna.github.io
Reposted by Chris Powers
Deep-sea technology shows never-before-seen 108-year-old submarine wreckage – Woods Hole Oceanographic Institution
Deep-sea technology shows never-before-seen 108-year-old submarine wreckage
www.whoi.edu
June 7, 2025 at 7:03 PM
Deep-sea technology shows never-before-seen 108-year-old submarine wreckage – Woods Hole Oceanographic Institution
Reposted by Chris Powers
Our new study shows how eDNA can track fine scale marine biodiversity loss under human impacts. Using a large scale mesocosm experiment we monitored temporal dynamics in bio-accumulation, response to stressors and eDNA degradation #eDNA #MarineBiodiversity onlinelibrary.wiley.com/doi/full/10....
Quantifying the Temporal Dynamics of Marine Biodiversity Under Anthropogenic Impacts Using eDNA Metabarcoding
This study uses eDNA to explore marine biodiversity changes under anthropogenic impacts, with a focus on marine community dynamics. Through the use of eDNA metabarcoding, the research identified 814 ....
onlinelibrary.wiley.com
June 3, 2025 at 2:02 AM
Our new study shows how eDNA can track fine scale marine biodiversity loss under human impacts. Using a large scale mesocosm experiment we monitored temporal dynamics in bio-accumulation, response to stressors and eDNA degradation #eDNA #MarineBiodiversity onlinelibrary.wiley.com/doi/full/10....
You get a doctorate in Biology and it makes you think you're quite good at it.
Then your partner starts studying for the praxis and you're reminded plants exist...
Then your partner starts studying for the praxis and you're reminded plants exist...
June 1, 2025 at 1:07 AM
You get a doctorate in Biology and it makes you think you're quite good at it.
Then your partner starts studying for the praxis and you're reminded plants exist...
Then your partner starts studying for the praxis and you're reminded plants exist...
Cool preprint showing the application of multimodal machine learning to #eDNA research and how explicitly incorporating other types of data can improve your results
I am working on a multimodal machine learning approach for eDNA too (stay tuned 😉) and it's great to see this method getting traction!
I am working on a multimodal machine learning approach for eDNA too (stay tuned 😉) and it's great to see this method getting traction!
Explainable Multimodal Machine Learning Using Combined Environmental DNA and Biogeographic Features for Ecosystem Biomonitoring
#eDNA #environmentalDNA
doi.org/10.1101/2025...
#eDNA #environmentalDNA
doi.org/10.1101/2025...
Explainable Multimodal Machine Learning Using Combined Environmental DNA and Biogeographic Features for Ecosystem Biomonitoring
Machine learning (ML) has been proposed as a taxonomy-independent approach using environmental DNA (eDNA) for ecosystem biomonitoring. Representations of eDNA amplicons either as clustered sequences t...
doi.org
May 28, 2025 at 2:23 AM
Cool preprint showing the application of multimodal machine learning to #eDNA research and how explicitly incorporating other types of data can improve your results
I am working on a multimodal machine learning approach for eDNA too (stay tuned 😉) and it's great to see this method getting traction!
I am working on a multimodal machine learning approach for eDNA too (stay tuned 😉) and it's great to see this method getting traction!
Reposted by Chris Powers
Explainable Multimodal Machine Learning Using Combined Environmental DNA and Biogeographic Features for Ecosystem Biomonitoring
#eDNA #environmentalDNA
doi.org/10.1101/2025...
#eDNA #environmentalDNA
doi.org/10.1101/2025...
Explainable Multimodal Machine Learning Using Combined Environmental DNA and Biogeographic Features for Ecosystem Biomonitoring
Machine learning (ML) has been proposed as a taxonomy-independent approach using environmental DNA (eDNA) for ecosystem biomonitoring. Representations of eDNA amplicons either as clustered sequences t...
doi.org
May 25, 2025 at 3:21 AM
Explainable Multimodal Machine Learning Using Combined Environmental DNA and Biogeographic Features for Ecosystem Biomonitoring
#eDNA #environmentalDNA
doi.org/10.1101/2025...
#eDNA #environmentalDNA
doi.org/10.1101/2025...
Reposted by Chris Powers
www.science.org/content/arti...
Nice reporting from @meganewald.bsky.social on point if use #eDNA detections of West African Manatees
Excited for what the future holds in being able to rapidly test for endangered cryptic species - particularly the rotund ones
Nice reporting from @meganewald.bsky.social on point if use #eDNA detections of West African Manatees
Excited for what the future holds in being able to rapidly test for endangered cryptic species - particularly the rotund ones
Africa’s manatees are highly elusive. A new DNA test promises to reveal their presence
Genetic traces in water could help survey populations under growing threat
www.science.org
May 14, 2025 at 6:41 PM
www.science.org/content/arti...
Nice reporting from @meganewald.bsky.social on point if use #eDNA detections of West African Manatees
Excited for what the future holds in being able to rapidly test for endangered cryptic species - particularly the rotund ones
Nice reporting from @meganewald.bsky.social on point if use #eDNA detections of West African Manatees
Excited for what the future holds in being able to rapidly test for endangered cryptic species - particularly the rotund ones
Reposted by Chris Powers
Remember in math class when your teacher always said you have to show your work?
Yeah I’ve been think about that a lot this week.
If you don’t share the data, you
don’t share the math, and don’t provide the sources, then we do not trust you.
#openscience #openmath
Yeah I’ve been think about that a lot this week.
If you don’t share the data, you
don’t share the math, and don’t provide the sources, then we do not trust you.
#openscience #openmath
February 22, 2025 at 5:05 PM
Remember in math class when your teacher always said you have to show your work?
Yeah I’ve been think about that a lot this week.
If you don’t share the data, you
don’t share the math, and don’t provide the sources, then we do not trust you.
#openscience #openmath
Yeah I’ve been think about that a lot this week.
If you don’t share the data, you
don’t share the math, and don’t provide the sources, then we do not trust you.
#openscience #openmath
Hi! 👋 New her from Twitter and also transitioning from studying #foraminifera at URI to doing #fisheries #edna work at NOAA!
November 25, 2024 at 2:56 AM
Hi! 👋 New her from Twitter and also transitioning from studying #foraminifera at URI to doing #fisheries #edna work at NOAA!