Séminaire de George Roderick (University of Berkley, USA)


 AHLeGall    20/11/2017 : 22:55

george_roderick.jpg

Dans le cadre des séminaires ECOBIO, George Roderick présente ses travaux le lundi 20 Novembre à 12:00 en salle de conf OSUR dans un séminaire intitulé "Invasive species, novel management, and sustainability, on Moorea, French Polynesia".

Dans le cadre des séminaires ECOBIO, George Roderick présente ses travaux le lundi 20 Novembre à 12:00 en salle de conf OSUR dans un séminaire intitulé "Invasive species, novel management, and sustainability, on Moorea, French Polynesia".

Semin Kevin Hoeffner 20nov2017



Ce séminaire sera suivi de celui de Rosemary Gillespie à 13h : "Origins of diversity in islands: the nexus of ecology and evolution in community assembly"

Research on the dynamics of biodiversity has progressed tremendously over recent years, though in two separate directions – ecological, to determine change over space at a given time, and evolutionary, to understand change over time. Integration of these approaches has remained elusive. Archipelagoes with a known geological chronology provide an opportunity to study ecological interactions over evolutionary time. In this presentation I will focus on the Hawaiian archipelago and summarize the development of ecological, and evolutionary research; I emphasize spiders because they have attributes allowing analysis of ecological affinities in concert with diversification. Within this framework, I highlight recent insights from the island chronosequence, in particular (1) the extent to which species diversification is predictable – and why some lineages might show predictable patterns of diversification while others do not. And (2) how the differences between lineages in their patterns of adaptive differentiation appear to be reflected in the patterns of accumulation (under representation or overshoot relative to an island’s carrying capacity). Insights into biodiversity dynamics at the nexus of ecology and evolution are now achievable by integrating new tools. In particular, large-scale metabarcoding efforts provide data on species abundance, diversity, and interactions. Coupling this with ecological metrics (interaction networks, species abundance distributions) across the chronosequence can uncover the evolutionary dynamics of the entire community, showing not only how diversity has been shaped in the past, but also how it will be expected to accommodate change in the future.



Contact OSUR
Animation ECOBIO / @





0 Commentaires