Reposted by Fredrik RyderheimInternational Society for the Study of Harmful Algae (ISSHA) @iss-ha.bsky.social · 3hA fantastic opportunity! #harmfulalgae 011
Fredrik Ryderheim @fryderheim.bsky.social · 10hAubrey Trapp et al adds further evidence that top-down effects need to be considered in harmful algal bloom forecasting. www.pnas.org/doi/10.1073/...pnas.orgPassive sampling for grazer cues incorporates top-down effects in harmful algal bloom monitoring and toxin prediction | PNASDomoic acid (DA) produced by toxigenic species of the diatom genus Pseudo-nitzschia during harmful algal blooms (HABs) bioaccumulates in filter fee... 010
Reposted by Fredrik RyderheimInternational Society for the Study of Harmful Algae (ISSHA) @iss-ha.bsky.social · 16hThe ERC BLOOMTOX Symposium: Impacts of global change on harmful cyanobacteria across scales will take place on 11 November 2026 at the Netherlands Institute of Ecology (NIOO-KNAW) in Wageningen, the Netherlands. Attendance is free (on-site and online). Registration: nioo.knaw.nl/en/form/glob... 011
Reposted by Fredrik RyderheimKen H Andersen @kenandersen.bsky.social · 23/09/2026Introducing the NUM model version 1.0 (github.com/Kenhasteande...): a validated plankton community model designed for global plankton ecology on a laptop. No more phyto/zooplankton but a modern description of mixotrophs and multicellular plankton. 043
Reposted by Fredrik RyderheimMaggi Brisbin @margaretbrisbin.bsky.social · 15/09/2026ASLO Meeting Abstract deadline extended until September 21! Consider joining our session on bioluminescence, dinoflagellates, ecotourism, and conservation! #oceanography 🌊 133
Reposted by Fredrik RyderheimColin Kremer @quant-ecology.bsky.social · 03/09/2026“Cool” new NSF postdoc position available in my lab at UConn, studying our unique Arctic phytoplankton collection and the interactive effects of temperature, light, and photoperiod. 3 years of funding, detailed job ad here: s.uconn.edu/q1o0itl62l. 35251
Fredrik Ryderheim @fryderheim.bsky.social · 02/09/2026The new Natural History Museum of Denmark will open March 6, 2027! Very exciting! snm.dk/en/news/open...snm.dkThe Opening Date Has Been Set For Denmark's New Natural History MuseumMarch 6, 2027, one of Denmark’s largest museum investments in recent decades will be completed when Natural History Museum Denmark opens its doors to the new national museum of natural history in the ... 000
Reposted by Fredrik RyderheimJohn Dolan @tintinnman.bsky.social · 02/09/2026febs.onlinelibrary.wiley.com/share/2HMBIS...febs.onlinelibrary.wiley.comStop paying predatory publishers of academic journals—A policy proposal to restore scientific integrity and transparencyReader environment loaded 034
Reposted by Fredrik RyderheimCorey Holt @coreyholt.bsky.social · 27/08/2026What's that? You wish we had more data on those bizarre dinoflagellates WITH EYES? Have no fear! With @protistwtmostest.bsky.social, Gordon Lax, and @pjkeelinglab.bsky.social, who also have eyes.academic.oup.comEvolution of complex organelles in ocelloid-bearing dinoflagellatesAbstract. Warnowiid dinoflagellates are known for possessing two of the most complex structures known in single cells: multi-projectile nematocysts and the 02916
Reposted by Fredrik RyderheimReDiLEEP @redileep.bsky.social · 26/08/2026Meet ReDiLEEP – a new Marie Skłodowska-Curie Actions Doctoral Network! We bring together 13 doctoral researchers to explore response diversity – how different responses to environmental change can make ecosystems more resilient. Recruitment is now underway! redileep.eu 097
Reposted by Fredrik RyderheimInternational Society for the Study of Harmful Algae (ISSHA) @iss-ha.bsky.social · 19/08/2026Our early career member Carolin Peter studies the toxic cyanobacteria Nodularia spumigena in the Baltic Sea. She is also the student representative on the ISSHA council. Read more about her work on our website: issha.org/early-career...issha.org Early career reseracher highlight: Carolin Peter : International Society for the Study of Harmful Algae (ISSHA) 001
Reposted by Fredrik RyderheimCameron Thrash @jcamthrash.bsky.social · 05/08/2026Integration and regulation of stolen organelles in a marine protist academic.oup.com/ismej/advanc... #jcampubsacademic.oup.comIntegration and regulation of stolen organelles in a marine protistAbstract. Chloroplast-stealing (a.k.a., “kleptoplastidic”) plankton transiently obtain and integrate prey metabolic machinery into their own cells. To do s 24013
Reposted by Fredrik RyderheimInternational Society for the Study of Harmful Algae (ISSHA) @iss-ha.bsky.social · 04/08/2026PhD position in understanding benthic marine cyanobacterial blooms and toxin production at the Cawthorn Institute (NZ). Deadline August 16 careers.cawthron.org.nz/job/b58073c7...careers.cawthron.org.nzPhD Position - Understanding Benthic Marine Cyanobacterial Blooms and Toxin Production - Cawthron Institute - Cawthron Institute 001
Reposted by Fredrik RyderheimInternational Society for the Study of Harmful Algae (ISSHA) @iss-ha.bsky.social · 04/08/2026PhD position in Marine Microbiology / HABs / B-vitamins at NC State University (USA). #harmfulalgae paerllab.wordpress.ncsu.edu/2026/07/28/p...paerllab.wordpress.ncsu.eduPhD position available; Marine Microbiology / HABs / B-vitamins – Paerl Lab @ NCSU 001
Reposted by Fredrik RyderheimThomas Mock @thomasmock.bsky.social · 28/07/2026Our new MSCA-Doctoral Network project ML4Plankton will kick off soon. 14 PhD students will start in March 2027 to work on plankton big data, i.e., machine learning. Get in touch if you are interested. Coordinator: Sakina-Dorothée Ayata @norwichmicro.bsky.social www.normalesup.org/~ayata/DN_ML...normalesup.orgML4Plankton Doctoral Network 2106
Fredrik Ryderheim @fryderheim.bsky.social · 06/07/2026Thought-provoking words by Albert Calbet in the latest issue of Journal of Plankton Research. academic.oup.com/plankt/artic...academic.oup.comIf AI writes the paper, who validates the plankton?: a call to reinvest in empirical expertise before the validation gap becomes irreversibleAbstract. Artificial intelligence is already reshaping the production of scientific text, literature synthesis, coding and image-based biological analysis. 000
Reposted by Fredrik RyderheimCameron Thrash @jcamthrash.bsky.social · 03/07/2026The coccosphere of the heavy calcifying coccolithophore Coccolithus braarudii provides defense against bacteria www.nature.com/articles/s42... #jcampubsnature.comThe coccosphere of the heavy calcifying coccolithophore Coccolithus braarudii provides defense against bacteria - Communications BiologyDecalcified cells of the coccolithophore Coccolithus braarudii collapse iupon exposure to P. inhibens, whereas calcified cells remain unaffected. This study provides the first direct evidence of the e... 062
Reposted by Fredrik RyderheimInternational Society for the Study of Harmful Algae (ISSHA) @iss-ha.bsky.social · 01/07/2026ISSHA early career member Manuela Seehauser, PhD student at Swedish University of Agricultural Sciences, researches toxic cyanobacterial blooms in the Baltic Sea. Read more about her research on our website 🌊👩🔬 #harmfulalgae #cyanobacteria issha.org/early-career...issha.org Early career reseracher highlight: Manuela Seehauser : International Society for the Study of Harmful Algae (ISSHA) 021
Reposted by Fredrik RyderheimInternational Society for the Study of Harmful Algae (ISSHA) @iss-ha.bsky.social · 26/06/2026Nominate a fellow ISSHA member for the "HAB Trailblazer" award! The award recognizes an individual who has made inspiring contributions to HAB research. issha.org/call-for-nom...issha.org Call for nominations: 2026 HAB Trailblazers : International Society for the Study of Harmful Algae (ISSHA) 111
Reposted by Fredrik RyderheimInternational Society for the Study of Harmful Algae (ISSHA) @iss-ha.bsky.social · 18/06/2026We're running a series where we highlight the research of our early career members. First up was Arnaud Louchart from @niooknaw.bsky.social discussing his recent work on #Microcystis cyanobacteria issha.org/early-career...issha.org Early career researcher highlight: Arnaud Louchart : International Society for the Study of Harmful Algae (ISSHA) 111
Fredrik Ryderheim @fryderheim.bsky.social · 16/06/2026ISSHA finally made it to BlueSky. If you work on harmful algae, this one's for you 🌊 010
Reposted by Fredrik RyderheimElena Litchman @elenalitchman.bsky.social · 10/06/2026Happy to see our new paper led by @marangureng.bsky.social on metabolic signatures of high temperature adaptation in diatoms published! 🎉 In collaboration with @suleles.bsky.social, Angel Diz, María Huete-Ortega, Andy Allen and Naomi Levine. 0207
Reposted by Fredrik RyderheimCésar O. Pacherres @pacherres-co.bsky.social · 27/05/2026Coral reefs are increasingly threaten by marine heatwaves, but what pushes corals past their breaking point? New in @ScienceAdvances @science.org: we found that corals can lose the microscopic system that helps move oxygen around their tissues during heat stress 🪸 doi.org/10.1126/scia...doi.orgAcute temperature effects on cilia beating increase coral deoxygenationCiliary flows buffer coral O2 supply under heat stress until a tipping point, above which hypoxia and tissue failure are induced. 1239
Reposted by Fredrik RyderheimAndrew Alverson @sinkingdiatom.bsky.social · 28/05/2026I'm looking for a postdoc to work on diatom phylogenomics. Reach out by email with questions. Please share and repost! uasys.wd5.myworkdayjobs.com/UASYS/job/Fa...uasys.wd5.myworkdayjobs.comPostdoctoral Fellow in Biological SciencesCurrent University of Arkansas System employees, including student employees and graduate assistants, need to log in to Workday via MyApps.Microsoft.com, then access Find Jobs from the Workday search ... 0513
Reposted by Fredrik RyderheimBen Larson @blarson.bsky.social · 19/05/2026And now it's out! Happy that PNAS selected for the cover this SEM image snapped by @samjlord.bsky.social, one of the most evocative visualizations of Euplotes that I have ever encountered. www.pnas.org/doi/10.1073/... Stay tuned for what is shaping up to be some fascinating follow-up in the lab... 1016760
Reposted by Fredrik RyderheimOle Henriksen @olehenriksen.bsky.social · 01/05/2026Some time ago, I wnt on a casual trip to Frøya, Norway. It turned out to be a bit more than just a fun observation… The scientific paper is now out 👉 onlinelibrary.wiley.com/doi/full/10.... Small observations can sometimes open up new questions.lnkd.inLinkedInThis link will take you to a page that’s not on LinkedIn 101
Reposted by Fredrik RyderheimMridul K. Thomas @mridulkthomas.bsky.social · 27/04/2026We need more long-format journals. Brevity is good. But there are topics that would benefit from more space than tight word limits allow. And there's a cost to summarising methods or shunting them to appendices. For science to be reproducible, we need to be able to clearly describe what was done. 081
Reposted by Fredrik RyderheimMridul K. Thomas @mridulkthomas.bsky.social · 24/04/2026Claude seems fantastic at writing Shiny apps. You can in principle go from knowing nothing about how to create one to having one online in minutes (obviously, best to spent more time checking it!). Fabulous for sharing ideas quickly and an excellent accompaniment to papers and lectures. 162
Reposted by Fredrik RyderheimWoods Hole Oceanographic Institution @whoi.edu · 21/04/202671% of our planet is ocean, but you wouldn’t know it from traditional maps. Shift your land-based perspective this Earth Week with a story about the Spilhaus Projection map and the WHOI oceanographer who created it: go.whoi.edu/spilhausmap 58839
Reposted by Fredrik RyderheimHolly Moeller @mixotrophe.bsky.social · 15/04/2026🚨Job Alert!🚨 Please share widely! We are hiring *two* postdocs (one ASAP, one Oct '26) using models and data to identify pathways involving the gut-brain axis that link the infant microbiome with neurodevelopment and Autism Spectrum Disorder. 1st review date: April 24! recruit.ap.ucsb.edu/JPF03089recruit.ap.ucsb.eduPostdoctoral Researcher-- Foundations of a Resilient Microbiome (2 Positions)University of California Santa Barbara is hiring. Apply now! 11420
Fredrik Ryderheim @fryderheim.bsky.social · 14/04/2026The Selander Lab at Lund University, Sweden, is looking for a PhD student to study the ecology of fear in marine plankton. Exciting topic with great supervision! lu.varbi.com/en/what:job/...lu.varbi.comDoctoral student in biologySubject description Biology is the broad subject of all living things. It encompasses everything from processes at the molecular and cellular levels to global processes at the ecosystem level. The sub 031
Reposted by Fredrik RyderheimElena Litchman @elenalitchman.bsky.social · 31/03/2026Happy to see our antifragility paper published! With @jonaswickman.bsky.social and @chrisklausmeier.bsky.social. 03210
Fredrik Ryderheim @fryderheim.bsky.social · 06/04/2026Our review on the evolutionary arms race between copepods and diatoms is now published in @aslo.org #ASLO_LO 🌊 We discuss the most common defense mechanisms found in diatoms, and how copepods have evolved to overcome them. Check it out #openaccess aslopubs.onlinelibrary.wiley.com/doi/10.1002/...aslopubs.onlinelibrary.wiley.comDiatoms–copepods: An evolutionary arms raceDiatoms and copepods are dominating and diverse groups of phytoplankton and zooplankton, respectively. Diatoms account for 25–40% of ocean primary production, and their main predators, copepods, are ... 0166
Reposted by Fredrik RyderheimAndrew Alverson @sinkingdiatom.bsky.social · 31/03/2026Somehow this paper has been largely ignored, but the basic idea has been presented by others as novel, or the idea gets misattributed to someone else. If you're interested in #diatom sex and its evolutionary importance, read and cite this paper. www.jstor.org/stable/2460887jstor.org The Diatom Sex Clock and Its Evolutionary Significance on JSTOR William M. Lewis, Jr., The Diatom Sex Clock and Its Evolutionary Significance, The American Naturalist, Vol. 123, No. 1 (Jan., 1984), pp. 73-80 063
Reposted by Fredrik RyderheimRense Nieuwenhuis @rnieuwenhuis.bsky.social · 29/03/2026High childhood poverty in Sweden, but disproportionally among parents with a migration background. Important research and debate piece by Anna Tegunimataka, @siddarthaaradhya.bsky.social and @rafgrotti.bsky.social www.aftonbladet.se/debatt/a/K88...aftonbladet.seStora ojämlikheter i hur svenska barn växer uppDEBATT. I tider av hög arbetslöshet och ökade matpriser riskerar många familjer att drabbas av ekonomisk utsatthet. Men barnfattigdomen i Sverige är kraftigt oj 055
Reposted by Fredrik RyderheimDavid Ho @davidho.bsky.social · 29/03/2026The ocean does not produce half of the oxygen that we breathe. 511314
Reposted by Fredrik RyderheimMridul K. Thomas @mridulkthomas.bsky.social · 20/03/2026Paul Ehrlich is remembered for a bet that he lost, and a population prediction that went wrong. Many environmental scientists seem to remember him warmly for 'raising awareness'. They should not. His legacy is both stupid and vile beyond imagination. (1) 2122
Reposted by Fredrik RyderheimKen H Andersen @kenandersen.bsky.social · 12/03/2026The flyver for this year's AMARE PhD school in lovely Malta is up: www.ogs.it/en/amare-med.... I look forward to present the new developments of FEISTY, and Andre Punt will introduce size-based stock assessment methods. Note: deadline coming up soon!ogs.itAMARE-MED 2026 | OGS | Istituto Nazionale di Oceanografia e di Geofisica SperimentaleThe Advanced school on Multispecies modelling Approaches for ecosystem-based marine REsource management in the MEDiterranean Sea (AMARE-MED) takes place annually and moves around the Mediterranean. Si... 012
Reposted by Fredrik RyderheimSchmidt Ocean Institute @schmidtocean.bsky.social · 10/03/2026Wow. Foraminifera! ROV pilots paused and carefully zoomed in to collect footage of these single-celled microorganisms, or protists, at 843 m during the #OBVI #LivingBioreactors expedition w/ @schmidtsciences.bsky.social offshore of Argentina. Read the full caption: youtube.com/shorts/Yv_ud... 7347119
Reposted by Fredrik RyderheimMridul K. Thomas @mridulkthomas.bsky.social · 22/02/2026How does salinity affect growth? @fryderheim.bsky.social & I developed a model to describe this, and he's parameterised it for >100 species. We can now model how salinity changes should affect population & community dynamics! Check out his poster on Monday afternoon at #OSM26 1184
Reposted by Fredrik RyderheimMridul K. Thomas @mridulkthomas.bsky.social · 20/02/2026New preprint out! 🌊🧪🌎 🧮➕📏 Temperature preferences estimated from lab experiments and species distribution models agree reasonably well! This increases my confidence in our ability to forecast range shifts. www.biorxiv.org/content/10.6... 1/nbiorxiv.org 1151
Fredrik Ryderheim @fryderheim.bsky.social · 20/02/2026Next week at #OSM26, I’ll be sharing our (w/ @mridulkthomas.bsky.social) work on a new approach for describing how phytoplankton growth responds to salinity, using a large set of experiments to estimate key traits across species. See you at poster OB14B-0481 on Monday! 030
Fredrik Ryderheim @fryderheim.bsky.social · 14/02/2026First time doing field work in 8 years 😵💫 Local newspaper reported lots of dead fish floating around Lomma harbor. Lack of oxygen is the likely explanation, but is it the cold weather/stagnant water or perhaps something microscopic? Looking forward to analyzing samples next week in the lab. 100
Reposted by Fredrik RyderheimColin Kremer @quant-ecology.bsky.social · 23/01/2026Phytoplankton empiricists: anyone have a good protocol (or reference) for treating fungal contamination in stock cultures without re-isolating? 2026 continues bringing all the icks... 115
Reposted by Fredrik RyderheimElena Litchman @elenalitchman.bsky.social · 09/12/2025Happy to see our analysis on scaling up temperature x nutrient interactions from populations to communities published in Ecological Monographs @esajournals.bsky.social! 📈 14114
Reposted by Fredrik RyderheimMaggi Brisbin @margaretbrisbin.bsky.social · 26/11/2025Hey #microbialsky - anyone looking for a good PhD student this cycle? Ugrad from my lab is looking but no luck with the PIs she has contacted (no funding, no response). She worked in my lab for 1.5 years, now is a research tech at the FWC research institute. Excellent at the bench & super smart! 246
Reposted by Fredrik RyderheimOxford Academic @academic.oup.com · 24/10/2025Has ICHA 2025 left you inspired? Journal of Plankton Research is seeking submissions for an upcoming special issue exploring harmful algae dynamics in both marine and freshwater systems. Submit your next paper with us: oxford.ly/48FyrpP 023
Reposted by Fredrik RyderheimMridul K. Thomas @mridulkthomas.bsky.social · 15/09/2025@raviranjan.bsky.social & I are teaching a free online workshop with on experimental design for environmental scientists on the 23rd. We'll focus on using simulations to evaluate how well different experimental designs help achieve your goals. Please sign up & share! forms.gle/MZTxeQs4UpMr... 22821
Reposted by Fredrik RyderheimVardilab @vardilab.bsky.social · 04/09/2025 📣 We are excited to share our latest paper, led by @taliashaler.bsky.social! We explore the transcriptional basis of #microalgae resistance to #viral_infection and identified a core group of resistance-related genes. >> (1/3) #New_Phytologist #Marine_Biology #Virusesnph.onlinelibrary.wiley.comMapping the transcriptional landscape of algal resistance to viral infection reveals a core expression programAlgal blooms and their demise by viruses drive global-scale ecological processes in the ocean. These blooms form the foundation of marine food webs, regulate microbial communities, and shape biogeoc... 22112