Biodiversity Research Seminar Series (BRS)

BRS Lacey Knowles: Evolution Lecture 2022-2023

October 5, 2022, 12:00 pm to 1:00 pm

2212 Main Mall

This webinar recording is restricted to members of the UBC Biodiversity Research Centre community. Please contact Katie Beall for access.

host: grad students (contact Lydia Fong and Penny Kahn)

Title: What’s missing from the speciation continuum and why it matters

Abstract: As someone whose work is rooted in studying the demographic controls of genetic variation and divergence within species and across communities of species, my interest in speciation builds from this foundation. In today’s talk I will argue for the importance of expanding the focus of speciation research to include not only a focus on the mechanistic causes of speciation (whether genetic or ecological) that determine the fate of incipient divergences, but also the opportunities for speciation – that is, the initiation and persistence of population divergence. I’ll present an empirical example in which population persistence, rather than chromosomal rearrangements, may be key to understanding the controls on diversification in a tropical rodent. I then shift gears and present models we have/are developing for quantifying biodiversity while explicitly accounting for the hierarchical process of speciation – namely, the incipient stages of divergence and the persistence of lineages we recognize as species. I will touch upon the limitations of studying species lineages alone to quantify biodiversity. The works I present reflects recent calls for expanding the focus of speciation research. This includes a fundamental shift in that both species lineages and the incipient divergences (i.e., population isolation) within species lineages should be studied to understand why species diversity varies across space, time, and among taxa.


  • Biodiversity Research Seminar Series (BRS)

UBC Crest The official logo of the University of British Columbia. Urgent Message An exclamation mark in a speech bubble. Caret An arrowhead indicating direction. Arrow An arrow indicating direction. Arrow in Circle An arrow indicating direction. Arrow in Circle An arrow indicating direction. Chats Two speech clouds. Facebook The logo for the Facebook social media service. Information The letter 'i' in a circle. Instagram The logo for the Instagram social media service. External Link An arrow entering a square. Linkedin The logo for the LinkedIn social media service. Location Pin A map location pin. Mail An envelope. Menu Three horizontal lines indicating a menu. Minus A minus sign. Telephone An antique telephone. Plus A plus symbol indicating more or the ability to add. Search A magnifying glass. Twitter The logo for the Twitter social media service. Youtube The logo for the YouTube video sharing service.