Florian Berg

A century of anthropogenic perturbations impact genomic signatures of the iconic migratory Atlantic cod Retrospective assessment of the iconic migratory Atlantic cod uncovers human-induced genome-wide changes during the last century.

Finally is this story out public!! With an amazing historical dataset from IMR (@havforskningsinstituttet) we demonstrate how human perturbations impact the genomic signal in one of the largest cod stocks in the world: the northeast arctic cod | Science Advances www.science.org/doi/10.1126/...

‘Highly‐Informative’ Genetic Markers Can Bias Conclusions: Examples and General Solutions High-grading bias is the overestimation power in a subset of loci caused by model overfitting. Using both empirical and simulated datasets, we show that high-grading bias can cause severe overestimat...

New paper with @birdpicsandscience.bsky.social out TODAY!!

We found that choosing "highly informative loci" (aka high fst loci) may bias results in common population genetic analyses

onlinelibrary.wiley.com/doi/10.1111/...

Explainer thread to come! #PopGen #PopulationGenomics #Evolution

ellmer 0.3.0 The newest version of ellmer introduces a simpler `chat()` interface that can works with any provider, a bunch of improvements to tool calling, and a handful of smaller quality of life improvements.

🐘 ellmer 🐘 makes it easy and fun to use LLMs from #rstats, and 0.3.0 is out now. Read about the new streamlined chat() function, improvements to tool specifications, and more at www.tidyverse.org/blog/2025/07....

Maybe the @icesmarine.bsky.social community can help.

Registration is open for the Small Pelagic Fish #SPF symposium 2026 organized by @picesmarinesci.bsky.social and @icesmarine.bsky.social
meetings.pices.int/meetings/int...
🐟🐠🧪🦑 #MarineEcology

💡 #KnowledgeHighlight |Learn how to assemble and evaluate #GenomeAssemblies with these open resources from the #EMBOgenomeseq course:

github.com/nadegeguigli...

Explore more open-access training materials in the ERGA #KnowledgeHub ➡️ knowledge.erga-biodiversity.eu

YouTube video by ICES - International Council for the Exploration of the Sea Hidden Gems - Ecosystem matrix: A game-changer for open marine data and integrated analysis

💎 New #IJMS #HiddenGems
➡️ An open R package simplifies access to 380+ ecosystem variables—cutting delays and boosting transparency in marine science.
🎥 Watch ➡️ youtu.be/qd2RmMmuj9k?...
Full study ➡️ doi.org/10.1093/ices...

Evolution of fast-growing piscivorous herring in the young Baltic Sea - Nature Communications The Atlantic herring is one of the world’s most abundant vertebrates and a typical plankton feeder of major ecological importance. This study shows that a piscivorous (fish-eating) ecotype of herring ...

It's the opposite. The cold Norwegian Sea is very nutrient rich, whereas the Baltic Sea is suffering eutrophication and is also a brackish environment. However, the are also fast-growing piscivorous herring
doi.org/10.1038/s414...

Atlantic #herring, two individuals 🐟, same species, same age. One from the cold #NorwegianSea, one from the warm #BalticSea. Guess which one is which! #MarineEcology 🦑🧪

Simple Fisheries Stock Assessment Methods A variety of simple fish stock assessment methods.

A new v0.10.0 of #fish #rstats package #FSA is at CRAN. Growth modeling (i.e., find starting values and displaying eqns) and handling size structure length categories and standard weight eqns have been substantially modified. New demo and explainer articles are at fishr-core-team.github.io/FSA/

100 million NOK to attract international researchers The Norwegian Government wants to attract top international researchers to Norway. The Research Council of Norway is now creating a completely new grant funding scheme to make it easier to recruit exp...

You are welcome to Norway where the state just announced a call for exactly this
www.forskningsradet.no/en/news/2025...

#popgen #jobalert

About 15-20 yrs ago, a bunch of reviews (inc. 1 by me) made predictions about the future of genomics in conservation. 1 yr ago at ICISB, Robin Waples assessed which of those predictions had been fulfilled. Sam May & Sam Rosenbaum now led the effort to turn this into a review:
doi.org/10.1111/mec....

The Idiot's Guide to Effective Population Size This is a reference manual for the elegant, yet hideously complex concept of effective population size (Ne), inspired by a classic, self-published manual of automotive repair ‘for the compleat idiot’....

I'm going to take solace in posting actual science is a simple form of resistance. This is another must read from Robin Waples.

#PopGen #ConsGen

onlinelibrary.wiley.com/doi/10.1111/...

Three AI-powered steps to faster, smarter peer review Tired of spending countless hours on peer reviews? An AI-assisted workflow could help.

Tired of spending countless hours thinking thoroughly about things? Stopping could help.

We’re deploying 106 receivers in the inner Oslofjord for the NMBU cod project with @oceantracking.bsky.social. This study tracks migration and movement shifts in two cod ecotypes and assessing habitat changes. Using Thelma and Innovation equipment, an open protocol is key to the project!

Vacancies The University of Iceland is one of the largest employers in Iceland. The university's mission is to conduct academic research and education, a goal that can only be achieved through the continuous en...

Job alert!
Assistant Professor in marine or freshwater ecology.
english.hi.is/about-ui/wor...

The Idiot's Guide to Effective Population Size This is a reference manual for the elegant, yet hideously complex concept of effective population size (Ne), inspired by a classic, self-published manual of automotive repair ‘for the compleat idiot’...

Wow. This is sooo good. Echoing @urbanevol.bsky.social this user’s manual for Ne should be required reading for popgen and conservation genetics folks. onlinelibrary.wiley.com/doi/10.1111/...

Mortality drives production dynamics of Atlantic cod through 1100 years of commercial fishing Fishing in the Viking era did not affect the Icelandic cod population, but foreign markets in the 14th century changed everything.

🚨Paper alert

Steve Campana et al rewrite the history of Atlantic cod and the #Iceland ground fishery

A must read!

#Fish #Fisheries #OceansPast

Mortality drives production dynamics of Atlantic cod through 1100 years of commercial fishing | Science Advances www.science.org/doi/10.1126/...

🚨 New paper published in... Nature 😱

I never thought that I would write these words, but here is a Nature-paper that I contributed to. We found global loss in genetic diversity. But conservation strategies may maintain or increase genetic diversity.

Full paper here: www.nature.com/articles/s41...

I've been working on a history of the tidyverse for an upcoming special issue of the Australia/New Zealand Journal of Statistics celebrating 25 years of R. I'd love to get your feedback! What have I missed?

hadley.github.io/25-tidyverse...

#rstats

#JobAlert

Researcher in machine learning (274160) | Institute of Marine Research Job title: Researcher in machine learning (274160), Employer: Institute of Marine Research, Deadline: Sunday, February 16, 2025

Do you want to work with #MarineEcology, #fisheries, @icesmarine.bsky.social #KI and #MachineLearning? Here is your dream position @Havforskningen 🧪🦑
www.jobbnorge.no/en/available...

Stakeholder diversity matters: employing the wisdom of crowds for data-poor fisheries assessments - Scientific Reports Scientific Reports - Stakeholder diversity matters: employing the wisdom of crowds for data-poor fisheries assessments

Stakeholder diversity matters: employing the wisdom of crowds for data-poor fisheries assessments www.nature.com/articles/s41... 🦑🐟🧪

An outstanding showing by the Walther Lab at the Texas Chapter of the American Fisheries Society this weekend! Kimber Montanye, Blake Munz and Jacob Oster presented all of their amazing work on flounder, tarpon, hypoxia, and beyond!

Measuring the effectiveness of fisheries management to sustainably produce food Abstract. The objectives of fisheries management are diverse and include production of food, employment, and profit while protecting marine species and the

Hilborn: most foregone food from marine fisheries is from underfishing and not overfishing
academic.oup.com/icesjms/adva...

Revealing the adaptation strategies of pelagic fleets in the Bay of Biscay by combining fishery data and fishers’ knowledge Abstract. The French pelagic fishery in the Bay of Biscay is currently facing new challenges. To anticipate and support future adaptations of fishers’ stra

How can we find out how fishers adapt their fishing strategies to a changing context? This is a key question if we want sustainable and resilient fishing.
Using an interdisciplinary method, we dived into this with the specific case of the Bay of Biscay small pelagic fishery.
doi.org/10.1093/ices...

Dynamics of thermal tolerance plasticity across fish species and life stages Climate warming with associated heat waves presents a concerning challenge for ectotherms such as fishes. During heatwaves, the ability to rapidly acc…

Our new paper on fish dynamics of thermal tolerance plasticity is finally out in Journal of Thermal Biology! This was an amazing collaboration with great researchers across the World!

www.sciencedirect.com/science/arti...

Reduced predation and competition from herring may have contributed to the increase of three-spined stickleback in the Baltic Sea Abstract. In many areas of the Baltic Sea, three-spined stickleback (Gasterosteus aculeatus) has increased several fold since the early 2000s. Two major pl

In a new study in @icesmarine.bsky.social journal led by Serena Donadi, we show that herring is an underestimated piscivore and that the herring decline in the Baltic Sea may have contributed to the increase in three-spined stickleback: academic.oup.com/icesjms/adva...

FSA Analyses for Multiple Groups – fishR Demonstrate new (or improved) functionality in the FSA package for efficiently performing some analyses across multiple groups.

A new #fishR post today showing newly modified functions in the #FSA package being used with #dplyr or #purrr to efficiently compute abundance (w/ removal/depletion data) or mortality (w/ catch-curve data) for multiple groups (e.g., species, area). #rstats

fishr-core-team.github.io/fishR/blog/p...