Ryosuke Nakadai

【2025年11月　ダートマス大学】
AIによる世論操作は可能

▶実際の人間を模倣し、あらゆる品質チェックを通過し、痕跡を残さずに世論調査を大規模に操作改ざんする能力をすでに人工知能は備えている
▶ロシア語、中国語、韓国語でプログラムされていても、完璧な英語の回答を生成するボットたち
📝📋　⚡　🤖🥷

支持政党比率の塗り替えなど調査データ汚染が広がれば、知識エコシステムの全体がめちゃめちゃになりそう
www.eurekalert.org/news-release...

Fear of supernatural punishment can harmonize human societies with nature: an evolutionary game-theoretic approach - Humanities and Social Sciences Communications Humanities and Social Sciences Communications - Fear of supernatural punishment can harmonize human societies with nature: an evolutionary game-theoretic approach

Fear of supernatural punishment can harmonize human societies with nature: an evolutionary game-theoretic approach

www.nature.com/articles/s41...

Fear of supernatural punishment can harmonize human societies with nature: an evolutionary game-theoretic approach - Humanities and Social Sciences Communications Humanities and Social Sciences Communications - Fear of supernatural punishment can harmonize human societies with nature: an evolutionary game-theoretic approach

🌿 How belief can protect nature

A new model suggests that fear of supernatural punishment for harming nature can evolve to curb overuse of resources, helping societies live sustainably.

🔗 www.nature.com/articles/s41...

#Sustainability #SciComm 🧪

【2025年10月　同志社大学】
持続可能性のためのツールとして機能する古代神の罰👺

「民が超自然的な罰を信じる度合い」「自然資源に対する搾取強度」「環境資源の有用度」を組み合わせた数理モデルを開発！
超自然的な罰を畏れる民なら、過剰搾取が阻まれて資源が回復しやすくなるのだ

「超自然的な罰に対する恐怖は、環境への害を軽減し、人間社会と自然との持続可能な関係を促進する可能性がある」

日本の民話に登場する👺天狗👺は、聖地を汚す傲慢な者や、神聖な空間（山や深い森）を乱すふとどき者を罰する自然の守護者💪
phys.org/news/2025-10...

宗教的な畏れは現代社会の持続可能性に貢献できるか 超自然的な罰への畏れが、環境破壊を抑え、人間社会と自然の持続的な関係を促進する可能性 研究のポイント 自然を破壊する人を罰する神や精霊への信仰は、世界中に存在する。そのような信仰によって、環境破壊が食い止め

【日本語プレスリリース】同志社大学
「宗教的な畏れは現代社会の持続可能性に貢献できるか 超自然的な罰への畏れが、環境破壊を抑え、人間社会と自然の持続的な関係を促進する可能性」
www.doshisha.ac.jp/news/detail/...

▶自然を破壊する人を罰する神や精霊への信仰は、世界中に存在する
▶そのような信仰によって、環境破壊が食い止められる条件を数学的に導いた
▶宗教的伝統も環境保全に貢献する可能性が考えられる

Divine punishment as an ancient tool for modern sustainability Supernatural beliefs have long shaped how people interact with nature. A study from Doshisha University used evolutionary game theory to explore whether fear of supernatural punishment can deter overe...

Divine punishment as an ancient tool for modern sustainability | EurekAlert! www.eurekalert.org/news-release...

Beetles have taken me a long way!

Genomic demography predicts community dynamics in a temperate montane forest Species population sizes fluctuate over time, and these temporal dynamics play a key role in governing the maintenance of biodiversity. Although modeling approaches have been developed to characterize...

This looks to be a fundamental theoretical advance by @jpodwyer.bsky.social et al. Using linkage disequlibrium-based Ne to back out σ² and then predict fluctuation sizes from a single temporal snapshot is a real advance for broad application 🧪🌐https://www.science.org/doi/10.1126/science.adu6396

Our fish monitoring data has deposited to #GBIF. Our data is CC-BY. Please look at and use our data!
www.gbif.org/dataset/721e...

Original data is published from our Lake Kasumigaura Database. db.cger.nies.go.jp/gem/moni-e/i...

Temporal beta diversity describes changes in community composition over time, yet its fundamental properties under neutral dynamics remain unclear. Using simulations, we demonstrate that temporal distance-decay patterns exhibit upper limits and are strongly influenced by four key parameters: the fundamental biodiversity number, local community size, mortality rate, and immigration rate. These findings highlight key differences between temporal and spatial beta diversity, emphasizing the need to account for species pool properties in macroecological studies.

#OpenAccess #SuzukiAward
Temporal beta-diversity patterns are highly dependent on fundamental parameters of neutral dynamics

Ryosuke Nakadai, the recipient of the 9th Young Scholar Award of The Ecological Society of Japan

doi.org/10.1111/1440...

community composition/ demography

Assistant Professor position in Traditional Ecological Knowledge at Stanford University. Applications due Sept 30, 2025

facultypositions.stanford.edu/en-us/job/49...

Want to do vegetation ecology in Taiwan? I am still searching for postdocs, so if interested, check the ad below and apply!

We focus on ecological drivers of cloud & monsoon forests in mountains and how to explain them using plant functional traits.

davidzeleny.net/veglab/

「宗谷バナナ」たわわ　猛暑の中、収穫最盛期　北海道 連日猛暑が続く中、北海道最北端・宗谷岬の名産品「宗谷バナナ」の収穫が最盛期を迎えた。日差しを浴びてたわわに実ったバナナが、一つずつ淡々と収穫されている。　かつては台湾やフィリピンなど南国産が大半を占めていたバナナだが、急激な地球温暖化に伴い、栽培の北限が上昇。東北地方から北海道が最も栽培に適した地域になったことで国産化が進んだ。特に「宗谷バナナ」のブランドで...

【アーカイブス】「宗谷バナナ」たわわ　猛暑の中、収穫最盛期　北海道
kyoko-np.net/2118071601.h...

Temporal beta‐diversity patterns are highly dependent on fundamental parameters of neutral dynamics Temporal beta diversity describes changes in community composition over time, yet its fundamental properties under neutral dynamics remain unclear. Using simulations, we demonstrate that temporal dis...

🌍 New theoretical paper out!
How do key parameters of neutral theory control temporal beta diversity?
Simple simulations reveal:
✅ Temporal distance-decay has upper limits
✅ Strong parameter dependency

Time ≠ Space — obvious, but still overlooked.

Individual-level size distribution patterns in fruit-feeding butterfly communities along a forest restoration gradient in the Afrotropics The loss and degradation of tropical rainforests pose significant challenges to global conservation, yet the impact of forest restoration on the funct…

New paper out! 🌿🦋
How does tropical forest restoration affect butterfly communities?
We analysed over 10,000 fruit-feeding butterflies in Uganda and found that as forests mature, body size diversity increases, distributions become more balanced, and intraspecific variation matters.

Biochemical oxygen demand as a proxy for dissolved organic carbon in Japanese rivers: conservative estimates for ecological risk assessment - Limnology Dissolved organic carbon (DOC) is a critical parameter for assessing metal bioavailability and toxicity in aquatic systems, but data from routine measurements in Japan are limited to a small number of...

Need dissolved organic carbon data for metal risk assessment? We showed that biochemical oxygen demand (5-day BOD) can be used as a proxy for DOC in Japanese rivers to derive conservative estimates.
doi.org/10.1007/s102... or rdcu.be/etE8I
DM me if you’d like a PDF.

瀬戸口明久先生より『増補害虫の誕生』をご恵贈いただきました。まことにありがとうございます。

Postdoctoral Researcher in Spatial Planning for Marine Protected Areas - Postdoctoral Researcher in Spatial Planning for Marine Protected Areas Candidate Profile: Educational and Research Expertise: Candidates should possess a PhD in ecology, marine biology, oceanography,...

New postdoctoral opportunity in my lab www.maraujolab.eu/2025/06/18/p...

Jaccard dissimilarity in stochastic community models based on the species‐independence assumption A fundamental problem in ecology is understanding the changes in species composition among sites (i.e. beta-diversity). It is unclear how spatial heterogeneity in species occupancy across sites shape...

New papers!
- Beta-diversity doi.org/10.1002/ecog.07737
- Cultural dynamics doi.org/10.1016/j.evolhumbehav.2025.106693
- Sex allocation & coexistence doi.org/10.1002/oik.11133
w/ students:
- Phytoplankton doi.org/10.1101/2025.06.03.657605
- Parasitoid lifehistory doi.org/10.1101/2025.02.22.639661

...突然ですがプレゼント企画です🎁

5/2発売の新刊「最新研究で迫る、生き物の生態図鑑」の感想を書いてくれた方【全員】にステッカーをプレゼント！

参加方法
① 本の感想をネット書店（Amazonなど）やSNSに投稿
② Googleフォームに必要事項を記入

Googleフォームはこちら
docs.google.com/forms/d/1Iep...

ご応募おまちしております！

※個人の企画のため、書店や出版社へのお問い合わせはお控えください。

Ecology and evolution: genetic and molecular dynamics of plants in nature The field of ecology and evolution covers the origins, maintenance, and functions of biodiversity through the investigation of interactions between organis

Eco-Evo special issue is now out in Plant and Cell Physiology @plantcellphysiol.bsky.social, with a flourish cover photo of Arabidopsis halleri. Please check it out!
doi.org/10.1093/pcp/...
#PlantEvolution #PlantEcology

フィールド調査のための安全管理マニュアル　 ｜朝倉書店 生態学、地理学、地質学などのフィールド調査を行う学生・指導者の行動方針を示すマニュアル。広く野外活動を行う人が活用できる安全管理の考え方と実践方法を示す。〔内容〕基本的心得・リスクマネジメントの考え方／フィールド調査時における安全管理の流れ／安全に調査を行うための基礎技術／ケース別安全管理／資料編など

みんな，生きて帰ろうな．

「生態学、地理学、地質学などのフィールド調査を行う学生・指導者の行動方針を示すマニュアル。広く野外活動を行う人が活用できる安全管理の考え方と実践方法を示す」
www.asakura.co.jp/detail.php?b...

共著論文が出版されました！徐（相馬）さんがメインで実施された湖沼と海洋での環境DNAの移動・拡散に関するメタ解析です。
生物多様性のモニタリングでの利用を考える上で重要な知見になると思われます！
authors.elsevier.com/sd/article/S...

やっとページ番号ついたと思ったらキングギドラ論文がeditor's choiceに選ばれてるwwwww academic.oup.com/bioscience/a... というわけでfree accessになりました よろしくお願いします

Two weeks left to apply! Just a note — the start date is negotiable. Feel free to reach out if you have any questions!😊
ご質問などあればお気軽にお問い合わせください！

Our unit at OIST is hiring two postdocs, one lab manager/technician, and one field technician! If you're passionate about exploring microbial and ecosystem ecology at the international institute on Japan's beautiful island, please apply by April 20! 🍄🦠🌳🌞
www.oist.jp/research/res...

こちらは平和ですよね🕊️

Our not-so-natural connection to nature The biophilia hypothesis has been influential in explaining humans' attraction to nature. Here, we critically evaluate recent research on biophilia, f…

Our not-so-natural connection to nature www.sciencedirect.com/science/arti... ”We propose that any environment, natural or built, can evoke positive affect when fulfilling important needs, including access to resources or social connection”

Now, paginated!

新しい論文出ました！
森林の遷移過程での種組成の変化における各デモグラフィ要素の貢献を個体ベースのβ多様性を用いて明らかにしました！
doi.org/10.1016/j.fo...