Matthias Wietz
@matthiaswietz.bsky.social
marine biologist & polar researcher | music, scuba diving & SciComm | sounds: https://spti.fi/16bmvbl & http://instagr.am/the.arcwatchers
Pinned
Matthias Wietz
@matthiaswietz.bsky.social
· Mar 10
10,000 miles on #Polarstern: from Namibia across the Weddell Sea to the Falklands 🇦🇶
We deployed autonomous samplers and filtered 2,000L of seawater to study microbial seasonality and ecology, in a team of 100 lovely people.
Keen to join our science? PhD position open! bit.ly/phd-polar-mi...
We deployed autonomous samplers and filtered 2,000L of seawater to study microbial seasonality and ecology, in a team of 100 lovely people.
Keen to join our science? PhD position open! bit.ly/phd-polar-mi...
Reposted by Matthias Wietz
🔊 APPLY NOW for our #MarMic #MSc/#PhD program!
Come to #Bremen and take an interdisciplinary approach to #marine #microbiology, #molecularbiology, #biochemistry, #evolution and more.
⏳ Open until Feb 28 2026
➡ marmic.mpg.de
#graduatestudents #marinescience #sciencecareer #IMPRS @maxplanck.de
Come to #Bremen and take an interdisciplinary approach to #marine #microbiology, #molecularbiology, #biochemistry, #evolution and more.
⏳ Open until Feb 28 2026
➡ marmic.mpg.de
#graduatestudents #marinescience #sciencecareer #IMPRS @maxplanck.de
December 2, 2025 at 1:47 PM
🔊 APPLY NOW for our #MarMic #MSc/#PhD program!
Come to #Bremen and take an interdisciplinary approach to #marine #microbiology, #molecularbiology, #biochemistry, #evolution and more.
⏳ Open until Feb 28 2026
➡ marmic.mpg.de
#graduatestudents #marinescience #sciencecareer #IMPRS @maxplanck.de
Come to #Bremen and take an interdisciplinary approach to #marine #microbiology, #molecularbiology, #biochemistry, #evolution and more.
⏳ Open until Feb 28 2026
➡ marmic.mpg.de
#graduatestudents #marinescience #sciencecareer #IMPRS @maxplanck.de
Reposted by Matthias Wietz
We have a date for the free-to-attend #anvio workshop and ECR Symposium for 2026, and we look forward to meeting you at the @hifmb.de in Oldenburg, Germany!
Please find more information on the venue, program, and the application form here, and spread the word 😇
anvio.org/workshops/20...
Please find more information on the venue, program, and the application form here, and spread the word 😇
anvio.org/workshops/20...
November 20, 2025 at 6:42 PM
We have a date for the free-to-attend #anvio workshop and ECR Symposium for 2026, and we look forward to meeting you at the @hifmb.de in Oldenburg, Germany!
Please find more information on the venue, program, and the application form here, and spread the word 😇
anvio.org/workshops/20...
Please find more information on the venue, program, and the application form here, and spread the word 😇
anvio.org/workshops/20...
Reposted by Matthias Wietz
Please share this with anyone who may be interested in a post-doc in Germany:
jobs.awi.de/Vacancies/20...
This is quite an exciting opportunity to push the boundaries of what is known regarding the molecular basis of the formation and demise of photosymbiotic relationships in marine habitats.
jobs.awi.de/Vacancies/20...
This is quite an exciting opportunity to push the boundaries of what is known regarding the molecular basis of the formation and demise of photosymbiotic relationships in marine habitats.
October 22, 2025 at 10:36 AM
Please share this with anyone who may be interested in a post-doc in Germany:
jobs.awi.de/Vacancies/20...
This is quite an exciting opportunity to push the boundaries of what is known regarding the molecular basis of the formation and demise of photosymbiotic relationships in marine habitats.
jobs.awi.de/Vacancies/20...
This is quite an exciting opportunity to push the boundaries of what is known regarding the molecular basis of the formation and demise of photosymbiotic relationships in marine habitats.
Reposted by Matthias Wietz
PhD available in my group to work on polar nitrogen fixation www.findaphd.com/phds/project...
Exploring new drivers for nitrogen fixation in polar oceans at University of Southampton on FindAPhD.com
PhD Project - Exploring new drivers for nitrogen fixation in polar oceans at University of Southampton, listed on FindAPhD.com
www.findaphd.com
October 14, 2025 at 10:38 AM
PhD available in my group to work on polar nitrogen fixation www.findaphd.com/phds/project...
Reposted by Matthias Wietz
🚨Our book is now available for pre-order🚨
It was such an honour to contribute to this, as this was the book that opened my eyes to, and inspired me to study #marine #microbiology!
Highly recommend for students/academics wishing to learn about marine microbes.
www.routledge.com/Marine-Micro...
It was such an honour to contribute to this, as this was the book that opened my eyes to, and inspired me to study #marine #microbiology!
Highly recommend for students/academics wishing to learn about marine microbes.
www.routledge.com/Marine-Micro...
Marine Microbiology: Ecology & Applications
The fourth edition of this bestselling text has been rigorously updated to reflect major new discoveries and concepts since 2019. This new edition reflects important new findings in marine microbiolog...
www.routledge.com
October 3, 2025 at 7:17 AM
🚨Our book is now available for pre-order🚨
It was such an honour to contribute to this, as this was the book that opened my eyes to, and inspired me to study #marine #microbiology!
Highly recommend for students/academics wishing to learn about marine microbes.
www.routledge.com/Marine-Micro...
It was such an honour to contribute to this, as this was the book that opened my eyes to, and inspired me to study #marine #microbiology!
Highly recommend for students/academics wishing to learn about marine microbes.
www.routledge.com/Marine-Micro...
Reposted by Matthias Wietz
2 Postdoc vacancies: Microbial dormancy in the cryosphere
@erc.europa.eu #ERC_SIESTA
📢 PLEASE RT
Experimental:
🧬 Single cell microbial activity measurements, flow cytometry, omics, biogeochem
Modelling:
🖥️ Bioenergetics, thermodynamics, ecological, biogeochem
☀️ Marseille, France
‼️ Apply by 30 Sept
@erc.europa.eu #ERC_SIESTA
📢 PLEASE RT
Experimental:
🧬 Single cell microbial activity measurements, flow cytometry, omics, biogeochem
Modelling:
🖥️ Bioenergetics, thermodynamics, ecological, biogeochem
☀️ Marseille, France
‼️ Apply by 30 Sept
September 10, 2025 at 8:11 AM
2 Postdoc vacancies: Microbial dormancy in the cryosphere
@erc.europa.eu #ERC_SIESTA
📢 PLEASE RT
Experimental:
🧬 Single cell microbial activity measurements, flow cytometry, omics, biogeochem
Modelling:
🖥️ Bioenergetics, thermodynamics, ecological, biogeochem
☀️ Marseille, France
‼️ Apply by 30 Sept
@erc.europa.eu #ERC_SIESTA
📢 PLEASE RT
Experimental:
🧬 Single cell microbial activity measurements, flow cytometry, omics, biogeochem
Modelling:
🖥️ Bioenergetics, thermodynamics, ecological, biogeochem
☀️ Marseille, France
‼️ Apply by 30 Sept
Arctic viruses follow the rhythm of the sea 🌊🦠
Just published in @natcomms.nature.com 🎯🙂 doi.org/10.1038/s414...
Press release: www.geomar.de/en/news/arti...
Great collaboration between @geomarkiel.bsky.social @awi.de @mpimarinemicrobio.bsky.social
— our HAUSGARTEN Observatory goes viral 🙃
Just published in @natcomms.nature.com 🎯🙂 doi.org/10.1038/s414...
Press release: www.geomar.de/en/news/arti...
Great collaboration between @geomarkiel.bsky.social @awi.de @mpimarinemicrobio.bsky.social
— our HAUSGARTEN Observatory goes viral 🙃
August 4, 2025 at 8:00 PM
Arctic viruses follow the rhythm of the sea 🌊🦠
Just published in @natcomms.nature.com 🎯🙂 doi.org/10.1038/s414...
Press release: www.geomar.de/en/news/arti...
Great collaboration between @geomarkiel.bsky.social @awi.de @mpimarinemicrobio.bsky.social
— our HAUSGARTEN Observatory goes viral 🙃
Just published in @natcomms.nature.com 🎯🙂 doi.org/10.1038/s414...
Press release: www.geomar.de/en/news/arti...
Great collaboration between @geomarkiel.bsky.social @awi.de @mpimarinemicrobio.bsky.social
— our HAUSGARTEN Observatory goes viral 🙃
Reposted by Matthias Wietz
Very excited to host the GRS Marine Microbes next year, which we are centering on three key themes: diversification, adaptation and resilience! Applications are now open - www.grc.org/marine-micro...
2026 Marine Microbes (GRS) Seminar GRC
The 2026 Gordon Research Seminar on Marine Microbes (GRS) will be held in Castelldefels, Barcelona Spain. Apply today to reserve your spot.
www.grc.org
July 31, 2025 at 7:18 PM
Very excited to host the GRS Marine Microbes next year, which we are centering on three key themes: diversification, adaptation and resilience! Applications are now open - www.grc.org/marine-micro...
Reposted by Matthias Wietz
The call for our 2026 Postdoc Cohort is now open. We offer 4 full-time positions. Apply until August 24th. hifmb.de/jobs
Please spread the word.
#postdoc #jobsinscience #marinebiodiversity #antarctica
@awi.de @hillebr1.bsky.social @ibaums.bsky.social @thilogross.bsky.social @merenbey.bsky.social 🦑
Please spread the word.
#postdoc #jobsinscience #marinebiodiversity #antarctica
@awi.de @hillebr1.bsky.social @ibaums.bsky.social @thilogross.bsky.social @merenbey.bsky.social 🦑
June 23, 2025 at 10:36 AM
The call for our 2026 Postdoc Cohort is now open. We offer 4 full-time positions. Apply until August 24th. hifmb.de/jobs
Please spread the word.
#postdoc #jobsinscience #marinebiodiversity #antarctica
@awi.de @hillebr1.bsky.social @ibaums.bsky.social @thilogross.bsky.social @merenbey.bsky.social 🦑
Please spread the word.
#postdoc #jobsinscience #marinebiodiversity #antarctica
@awi.de @hillebr1.bsky.social @ibaums.bsky.social @thilogross.bsky.social @merenbey.bsky.social 🦑
Happy to contribute #eDNA sequences from our #Arctic FRAM Observatory to GRUMP, a microbial database covering the world ocean 🌊 many thanks @jedfuhrman.bsky.social & @jcmcnch.bsky.social for the invitation to join!
@awi.de @mpimarinemicrobio.bsky.social @chrbienhold.bsky.social
@awi.de @mpimarinemicrobio.bsky.social @chrbienhold.bsky.social
Please Re-Post. Our global GRUMP microbial ocean database is out in Scientific Data! Unfractionated, single universal PCR, with Archaea, Bacteria, and Eukaryotes all on the same scale with the same denominator. Pole to pole, depths to 6000m. Lots of metadata. www.nature.com/articles/s41...
Characterizing organisms from three domains of life with universal primers from throughout the global ocean - Scientific Data
Scientific Data - Characterizing organisms from three domains of life with universal primers from throughout the global ocean
www.nature.com
July 3, 2025 at 12:31 PM
Happy to contribute #eDNA sequences from our #Arctic FRAM Observatory to GRUMP, a microbial database covering the world ocean 🌊 many thanks @jedfuhrman.bsky.social & @jcmcnch.bsky.social for the invitation to join!
@awi.de @mpimarinemicrobio.bsky.social @chrbienhold.bsky.social
@awi.de @mpimarinemicrobio.bsky.social @chrbienhold.bsky.social
Reposted by Matthias Wietz
We have a new 3-year postdoc position in our group at the @hifmb.de to study plasmids and plasmids systems of the marine environment to survey their utility in microbial responses to environmental change.
Please see the official job ad here, and spread the word:
jobs.awi.de/Vacancies/20...
Please see the official job ad here, and spread the word:
jobs.awi.de/Vacancies/20...
PostDoc in ecology and evolution of plasmids in polar waters at HIFMB (f/d/m)
Layout AWI HIPP extern, englisch
jobs.awi.de
June 5, 2025 at 8:09 AM
We have a new 3-year postdoc position in our group at the @hifmb.de to study plasmids and plasmids systems of the marine environment to survey their utility in microbial responses to environmental change.
Please see the official job ad here, and spread the word:
jobs.awi.de/Vacancies/20...
Please see the official job ad here, and spread the word:
jobs.awi.de/Vacancies/20...
Reposted by Matthias Wietz
Excited about microbiomes and want to study them at the single-cell level? Join our team to pioneer research using microfluidics paired with automated timelapse microscopy. We're hiring motivated postdocs to push the boundaries of microbial ecology!
Apply now: apply.interfolio.com/165601
Apply now: apply.interfolio.com/165601
March 30, 2025 at 6:07 PM
Excited about microbiomes and want to study them at the single-cell level? Join our team to pioneer research using microfluidics paired with automated timelapse microscopy. We're hiring motivated postdocs to push the boundaries of microbial ecology!
Apply now: apply.interfolio.com/165601
Apply now: apply.interfolio.com/165601
Reposted by Matthias Wietz
Very excited to announce that @mehrshmali.bsky.social and I will be chairing a symposium (S10) at ESEB25 this summer on 'eco-evolutionary dynamics driven by mobile genetic elements' (eseb2025.com/list-of-symp...)
🚨Abstract submissions are now open🚨
🚨Abstract submissions are now open🚨
List of Symposia – ESEB 2025. Congress of the European Society for Evolutionary Biology. Barcelona. Spain
eseb2025.com
March 10, 2025 at 6:52 PM
Very excited to announce that @mehrshmali.bsky.social and I will be chairing a symposium (S10) at ESEB25 this summer on 'eco-evolutionary dynamics driven by mobile genetic elements' (eseb2025.com/list-of-symp...)
🚨Abstract submissions are now open🚨
🚨Abstract submissions are now open🚨
10,000 miles on #Polarstern: from Namibia across the Weddell Sea to the Falklands 🇦🇶
We deployed autonomous samplers and filtered 2,000L of seawater to study microbial seasonality and ecology, in a team of 100 lovely people.
Keen to join our science? PhD position open! bit.ly/phd-polar-mi...
We deployed autonomous samplers and filtered 2,000L of seawater to study microbial seasonality and ecology, in a team of 100 lovely people.
Keen to join our science? PhD position open! bit.ly/phd-polar-mi...
March 10, 2025 at 2:09 PM
10,000 miles on #Polarstern: from Namibia across the Weddell Sea to the Falklands 🇦🇶
We deployed autonomous samplers and filtered 2,000L of seawater to study microbial seasonality and ecology, in a team of 100 lovely people.
Keen to join our science? PhD position open! bit.ly/phd-polar-mi...
We deployed autonomous samplers and filtered 2,000L of seawater to study microbial seasonality and ecology, in a team of 100 lovely people.
Keen to join our science? PhD position open! bit.ly/phd-polar-mi...
Reposted by Matthias Wietz
Our latest on the genetic content carried within different populations of DNA-containing particles in the oceans! Vesicles and viruses likely play distinct roles in microbial horizontal gene transfer networks. Grateful to all collaborators
www.nature.com/articles/s41...
#MicroSky
www.nature.com/articles/s41...
#MicroSky
Distinct horizontal gene transfer potential of extracellular vesicles versus viral-like particles in marine habitats - Nature Communications
Biller et al. use long-read sequencing of fractionated ocean nanoparticles, showing that extracellular vesicles and virus-like particles contain distinct pools of genetic information and thus may diff...
www.nature.com
March 3, 2025 at 2:57 PM
Our latest on the genetic content carried within different populations of DNA-containing particles in the oceans! Vesicles and viruses likely play distinct roles in microbial horizontal gene transfer networks. Grateful to all collaborators
www.nature.com/articles/s41...
#MicroSky
www.nature.com/articles/s41...
#MicroSky
Reposted by Matthias Wietz
Great thread on graduate positions in Austria and Germany. For more info on our graduate program see marmic.mpg.de/marmic2/. The deadline for this year's MSc program has passed, but PhD program doesn't have a deadline.
March 1, 2025 at 4:41 PM
Great thread on graduate positions in Austria and Germany. For more info on our graduate program see marmic.mpg.de/marmic2/. The deadline for this year's MSc program has passed, but PhD program doesn't have a deadline.
Reposted by Matthias Wietz
Don't miss out, October 22-25, 2025: International Symposium – Trends in Marine Host-Microbe Symbioses with an exciting lineup of speakers marinesymbioses.eu/invited-spea...; looking forward to insightful & inspiring discussions; registration: marinesymbioses.eu/register/ @uni-konstanz.de
Invited speakers – Trends in Marine Host-Microbe Symbioses Symposium
marinesymbioses.eu
February 28, 2025 at 9:05 AM
Don't miss out, October 22-25, 2025: International Symposium – Trends in Marine Host-Microbe Symbioses with an exciting lineup of speakers marinesymbioses.eu/invited-spea...; looking forward to insightful & inspiring discussions; registration: marinesymbioses.eu/register/ @uni-konstanz.de
Happy #PolarBearDay from a curious explorer 🐻❄️ in the central Arctic Ocean 🧊🚢
@awi.de @mpimarinemicrobio.bsky.social #Polarstern
@awi.de @mpimarinemicrobio.bsky.social #Polarstern
February 27, 2025 at 5:35 PM
Happy #PolarBearDay from a curious explorer 🐻❄️ in the central Arctic Ocean 🧊🚢
@awi.de @mpimarinemicrobio.bsky.social #Polarstern
@awi.de @mpimarinemicrobio.bsky.social #Polarstern
Reposted by Matthias Wietz
Summer School on Quantitative Phage-Bacteria Dynamics Across Scales -> Application date: March 21, 2025. Open to MS + PhD students + postdocs
Application site: bit.ly/phageschool2...
Application site: bit.ly/phageschool2...
February 27, 2025 at 3:23 PM
Summer School on Quantitative Phage-Bacteria Dynamics Across Scales -> Application date: March 21, 2025. Open to MS + PhD students + postdocs
Application site: bit.ly/phageschool2...
Application site: bit.ly/phageschool2...
New #PhD opportunity 🌊🧊 Join us to study the seasonality and ecology of microbiomes in the #Arctic and #Antarctic, combining 'omics and cultivation in a collaborative team. Please share and apply 🙂
career.mpi-bremen.de/jobposting/e...
#AWI @mpimarinemicrobio.bsky.social @icbm-uol.bsky.social
career.mpi-bremen.de/jobposting/e...
#AWI @mpimarinemicrobio.bsky.social @icbm-uol.bsky.social
February 14, 2025 at 11:49 AM
New #PhD opportunity 🌊🧊 Join us to study the seasonality and ecology of microbiomes in the #Arctic and #Antarctic, combining 'omics and cultivation in a collaborative team. Please share and apply 🙂
career.mpi-bremen.de/jobposting/e...
#AWI @mpimarinemicrobio.bsky.social @icbm-uol.bsky.social
career.mpi-bremen.de/jobposting/e...
#AWI @mpimarinemicrobio.bsky.social @icbm-uol.bsky.social
Our new study in @naturecomms.bsky.social showing the recurrent assembly of microbial modules over polar day and night, based on four years of autonomous sampling in the Arctic www.nature.com/articles/s41...
Fantastic teamwork by #AWI @mpimarinemicrobio.bsky.social @hhu.bsky.social & many others 🙂
Fantastic teamwork by #AWI @mpimarinemicrobio.bsky.social @hhu.bsky.social & many others 🙂
February 4, 2025 at 5:02 PM
Our new study in @naturecomms.bsky.social showing the recurrent assembly of microbial modules over polar day and night, based on four years of autonomous sampling in the Arctic www.nature.com/articles/s41...
Fantastic teamwork by #AWI @mpimarinemicrobio.bsky.social @hhu.bsky.social & many others 🙂
Fantastic teamwork by #AWI @mpimarinemicrobio.bsky.social @hhu.bsky.social & many others 🙂
Reposted by Matthias Wietz
Hi 🧊bsky
I'll be chairing the GRS on Polar Marine Science in Italy this March!
We still have 10 seats available & 5 days left to apply!
Join our ECR community to share your research and discuss the role of sea ice in ecosystem dynamics!
www.grc.org/polar-marine...
#polarresearch #marinescience
I'll be chairing the GRS on Polar Marine Science in Italy this March!
We still have 10 seats available & 5 days left to apply!
Join our ECR community to share your research and discuss the role of sea ice in ecosystem dynamics!
www.grc.org/polar-marine...
#polarresearch #marinescience
February 3, 2025 at 12:02 PM
Hi 🧊bsky
I'll be chairing the GRS on Polar Marine Science in Italy this March!
We still have 10 seats available & 5 days left to apply!
Join our ECR community to share your research and discuss the role of sea ice in ecosystem dynamics!
www.grc.org/polar-marine...
#polarresearch #marinescience
I'll be chairing the GRS on Polar Marine Science in Italy this March!
We still have 10 seats available & 5 days left to apply!
Join our ECR community to share your research and discuss the role of sea ice in ecosystem dynamics!
www.grc.org/polar-marine...
#polarresearch #marinescience
Reposted by Matthias Wietz
I just wanted to send a quick update and thank the 70+ people who applied for the upcoming #anvio workshop and ECR symposium in Oldenburg so far.
We are very encouraged with the geographical diversity, which has been one of our main concerns. The applications are open until January 10.
We are very encouraged with the geographical diversity, which has been one of our main concerns. The applications are open until January 10.
December 19, 2024 at 11:02 AM
I just wanted to send a quick update and thank the 70+ people who applied for the upcoming #anvio workshop and ECR symposium in Oldenburg so far.
We are very encouraged with the geographical diversity, which has been one of our main concerns. The applications are open until January 10.
We are very encouraged with the geographical diversity, which has been one of our main concerns. The applications are open until January 10.
Hello Bluesky 👋 ...with some impressions from our North Pole expedition last year; studying the Arctic ecosystem from sea-ice 🧊 to seafloor 🐙 Exciting science and lovely people!
🎶 ...music by our Polarstern band, The Arcwatchers, recorded onboard 🙃 instagr.am/the.arcwatch...
🎶 ...music by our Polarstern band, The Arcwatchers, recorded onboard 🙃 instagr.am/the.arcwatch...
December 16, 2024 at 3:12 PM
Hello Bluesky 👋 ...with some impressions from our North Pole expedition last year; studying the Arctic ecosystem from sea-ice 🧊 to seafloor 🐙 Exciting science and lovely people!
🎶 ...music by our Polarstern band, The Arcwatchers, recorded onboard 🙃 instagr.am/the.arcwatch...
🎶 ...music by our Polarstern band, The Arcwatchers, recorded onboard 🙃 instagr.am/the.arcwatch...