Masato Yamamichi

We found that increasing the amplitude of environmental fluctuations around long-term deteriorating trends has negative and positive effects on evolutionary rescue by combining mathematical model simulations and experimental evolution of Chlorella vulgaris under increasing salinity.

Our second paper on algal experiments at @nigidenken.bsky.social with @shotashibasaki.bsky.social is finally out in @journal-evo.bsky.social! "The double-edged effect of environmental fluctuations on evolutionary rescue" doi.org/10.1093/evol... bsky.app/profile/bior...

Higher genetic variance of prey defence promotes fluctuation-dependent species coexistence Abstract. Understanding stable coexistence of competing species despite the competitive exclusion principle has been a central topic in ecology. Previous s

A new paper in Biology Letters! "Higher genetic variance of prey defence promotes fluctuation-dependent species coexistence" @royalsocietypublishing.org doi.org/10.1098/rsbl...

New research from #BiologyLetters: Higher genetic variance of prey defense promotes fluctuation-dependent species coexistence royalsocietypublishing.org/rsbl/article... | #Ecology #Evolution

We will have the following 8 presentations at the ESJ meeting in Kyoto next week!
esj.ne.jp/meeting/abst...
esj.ne.jp/meeting/abst...
esj.ne.jp/meeting/abst...
esj.ne.jp/meeting/abst...
esj.ne.jp/meeting/abst...
esj.ne.jp/meeting/abst...
esj.ne.jp/meeting/abst...
esj.ne.jp/meeting/abst...

We are pleased to be back for another year! Join us next Thursday 1pm AEST.

Deepa Agashe (NCBS) @deepaagashe.bsky.social will present a seminar titled:

Founders, shapers: Colonizing individuals predict trait and population dynamics in new habitats

Sign up form below ⬇️ ⬇️ ⬇️

'Modeling evolutionary rescue' doi.org/10.32942/X25...

A NIG-JOINT research meeting on population genetics will be held in March at @nigidenken.bsky.social "Population genetics in the era of population genomics" www.nig.ac.jp/nig/research...

British Ecological Society Annual Meeting 2025 Agenda on Whova December 15 – 18, 2025, Edinburgh, Scotland

At #BES2025 in Edinburgh, Takahisa Ueno will give a poster presentation entitled "Synthesizing modern coexistence theory (MCT) and biodiversity-ecosystem functional stability (BEFS)" on Tuesday! whova.com/embedded/ses...

対立が共存を生むアリの群集生態学 ～同じ環境に多数の種が共存するアリの謎を実験的に解明～ | 琉球大学 琉球大学 農学部 辻教授、鹿児島大学連合大学院と国立遺伝学研究所の研究チームによる成果が、米国生態学会誌「E

プレスリリースも出ました。 www.u-ryukyu.ac.jp/news/72988/

Measuring competition coefficients in an ant community: Implications for intraspecific adaptation load Understanding the stable coexistence of species despite resource competition has been a central topic in ecology. Ant communities are particularly enigmatic as various species coexist despite resourc....

We published a new paper in Ecology @ecologicalsociety.bsky.social entitled "Measuring competition coefficients in an ant community: Implications for intraspecific adaptation load" doi.org/10.1002/ecy....

Poster announcing the workshop.

Join us for an @smtpb.bsky.social workshop on Modern Coexistence Theory. We'll cover mathematical foundations, the theory of partitioning, and data-based applications. Featuring @swatipatel.bsky.social, Nick Kortessis, & Lauren Shoemaker. Zoom link here: smtpb.org/event-6426026

Join us this Thursday, Hiromi Uno (Tohoku University) will give our last seminar for the year:

Insects, shrimps and fishes; river animal migrations and their ecological consequences

Sign up to this google form to receive the zoom link and future seminar announcements forms.gle/H6YgMuAgDWYS...

Meghna Krishnadas - Demographic responses of plants to abiotic and biotic drivers YouTube video by PopBio on the Dark Side

Our most recent seminar from Meghna Krishnadas is now available to watch 🌳🦠🌳

youtu.be/zzOS16wA9YU?...

Applying invasion criterion to cultural evolution https://www.biorxiv.org/content/10.1101/2025.11.12.688139v1

Meghna Krishnadas will present the next PopBio seminar:

The relative and interactive roles of abiotic and biotic drivers on demographic responses of plants

Join us online, Thursday Oct 30 1pm AEST.

Sign up to our mailing list to receive the zoom link: forms.gle/u7B1fyzRAwar...

I-Ching Chen will present the next PopBio seminar:

Revisiting the Vulnerability of Mountain Biota under Rapid Warming

Join us online, Thursday Sep 25 1pm AEST. These seminars are open to all so please share widely.

Sign up to our mailing list to receive the zoom link: forms.gle/kb6aHitUsL5f...

Quantifying a trait-mediated indirect effect of an environmental stressor on population dynamics https://www.biorxiv.org/content/10.1101/2025.09.04.674171v1

The genomics of discrete polymorphisms maintained by disruptive selection Disruptive selection can lead to the evolution of discrete morphs. We show that particular genetic architectures, in terms of dominance, epistasis, and linkage, are likely to evolve to produce discrete morphs under disruptive selection. Recent genomic studies have revealed that causative mutations tend to cluster, sometimes as a result of chromosomal rearrangements, but we still know little about the molecular mechanisms of dominance and epistasis. Although disruptive selection can also lead to speciation, once an optimal genetic architecture has evolved, disruptive selection no longer promotes the evolution of assortative mating. For a better understanding of the conditions that promote or constrain speciation, it is necessary to address how fast such a genetic architecture can evolve.

Online now: The genomics of discrete polymorphisms maintained by disruptive selection

A new review paper is now online @cp-trendsecolevo.bsky.social "The genomics of discrete polymorphisms maintained by disruptive selection" doi.org/10.1016/j.tr...

Shaopeng Wang will present the next PopBio seminar:

"Biodiversity and Ecosystem Stability Across Spatial and Temporal Scales"

Join us online, Thursday August 28 1pm AEST. These seminars are open to all!

Sign up to our mailing list to receive the zoom link: forms.gle/uRJwbK1ZacZH...

Joe Wan will present the next PopBio seminar:

"A unified theory of community structure"

Join us online, Thursday July 31 1pm AEST. These seminars are open to all!

Sign up to our mailing list to receive the zoom link: forms.gle/ZG8ghPoz2oX4...

Save the dates!

We have an excellent line up of speakers for the next three months (last Thursday of each month). These online seminars are open to all and the time of day is set for attendees in the Asia-Pacific.

Sign up to this google form to receive announcements: forms.gle/2vn885K3uLC1...

科学　2025年7月号｜岩波書店 【特集】競争と共存の生態学

月刊誌『科学』2025年7月号
www.iwanami.co.jp/book/b101380...

【特集】競走と共存の生態学
どの生物も他の個体や多様な種との複雑な相互作用の中で生きている。だが，その中でどのように生物多様性が支えられているかについてはいまだ多くの謎が残されている。その解明を目指す研究を紹介する。

［特集目次］
群集生態学とは何だろうか……山道真人

多種共存と多様性崩壊のメカニズム──外来生物の競争が示す統一的原理……鶴井香織

ダーウィンの置き土産──多様な生物はいかにして共存しているのか？……舞木昭彦

草花と昆虫が織りなすネットワーク……篠原直登

Andrew Barnes @barnesecodiv.bsky.social will present our next seminar:

"Deciphering the Multitrophic Consequences of Biodiversity Change Through an Energetic Lens"

Join us online Thursday 26th June 1pm AEST!

Sign up to our mailing list to receive the zoom link forms.gle/24Y557Cjeu6w...

An image advertising the seminar as described in the main text but with the following abstract: Microbial communities can perform complex functions that individual microbes cannot achieve alone, but enhancing these collective functions through artificial selection is challenging. Here, we examine a simple microbial system to develop a theoretical framework for understanding the conditions necessary for successful artificial selection on collectives. By analyzing whether artificial selection can effectively drive the community toward a target composition, we predict its likelihood of success under different experimental setups and identify the key parameters that influence successful selection.

Join us online this Thursday 1pm AEST.

Hye Jin Park @hyejinpark.bsky.social (Inha University) will present:

"Artificial selection for collective composition"

Sign up to receive the zoom link forms.gle/53hkcdcKPGfa...

NB. This seminar won't be recorded.

A single episode of sexual reproduction can produce large variation in population growth rates under dual stressors Abstract. Sexual reproduction has been a central topic in evolutionary biology because of its many costs: why have organisms evolved sexual reproduction de

Experiments of a green alga, Closterium psl. complex, show that a single episode of sexual reproduction produces large variation in population growth rates under dual stressors, promoting evolutionary rescue:

doi.org/10.1093/jeb/...

@yawaguchi.bsky.social and @masatoyamamichi.bsky.social

Sexual conflict in resident species can facilitate establishment of a maladapted invader | The American Naturalist: Vol 0, No ja

A paper with Miguel Gómez-Llano and @adamsiepielski.bsky.social entitled "Sexual conflict in resident species can facilitate establishment of a maladapted invader" was published in Am. Nat. @asn-amnat.bsky.social! doi.org/10.1086/736568

プレスリリースも出しました。 www.nig.ac.jp/nig/ja/2025/...

PopBio on the Dark Side This is the channel of the seminar series PopBio on the Dark Side. A virtual seminar series covering research on population biology and theoretical ecology from academics in the Asia-Pacific region. W...

We have a YouTube channel!

You can see recordings of Akshit Goyal's talk from yesterday and Ryan Chisholm's talk from last month here:

www.youtube.com/@PopBio-onth...