[Ocees] Fwd: This week's PBIO Colloquium!

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Howdy OCEESers!

Please join us for this week’s PBIO Colloquium.  Dr. Dylan Cohen will present his work
on gene flow and genetic diversity in fragmented landscapes of the the American West.

Environmental and Plant Biology Colloquium Series, Fall 2023
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Conservation genetics, systematics, and patterns
of migration in the genus Amsonia (Apocynaceae)

Dylan Cohen   Chicago Botanical Garden, Glencoe, Illinois

Friday, December 1st at 11:50 AM                Room 104, Porter Hall

Species consist of a finite number of ephemeral and interconnected populations that
vary across space and time.  Landuse change and habitat fragmentation can disrupt
gene flow and create small, isolated populations that may become a conservation
concern due to inbreeding and low genetic diversity. Amsonia (Apocynaceae) are
perennial, shrubs with salverform corollas that attract moths, bees, and other
pollinators. Amsonia tharpii is only known from five populations in a region with an
intense landuse history. I will present patterns of migration at the population level
by comparing the genetic diversity and population connectivity of two narrowly
endemic Amsonia species to a broadly distributed species to address if landuse
changes are impacting the genetic health of A. tharpii.  I will present preliminary
phylogenetic results for the genus and discuss evolutionary relationships considering
broad patterns of migration and divergence.

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