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CLASS:PUBLIC
CREATED:20260516T044424Z
DESCRIPTION:"Origins of Diversity: The Evolutionary Assembly of Hawaiian Arthropod Communities" - Speaker: Dr. Rosemary Gillespie, Professor, Department of Environmental Science, Policy and Management, UC Berkeley******************Abstract: The Hawaiian Islands provide a real-time laboratory for evolutionary biology, showcasing adaptive\nradiation due to their extreme isolation, varied habitats, and lack of competition. Moreover, because of\nthe chronological arrangement of the islands, the archipelago provides a way to infer the stages of\nradiation across multiple lineages in real time. I will discuss different mechanisms that underpin\nadaptive radiation, focusing in particular on spiders. I will then introduce an approach we are using to\nunderstand how entire communities change over extended evolutionary time: We are using DNA\nmetabarcoding of arthropod communities across the chronosequence, measuring relative abundance,\ndiversity, and interactions between, entire arthropod communities, controlling for elevation, and\nprecipitation, and all within Metrosideros forest. The results show regular patterns of change in\ndiversity, specialization, and resilience to biological invasion, across the island chronosequence, with a\nstrong association between island age and invasion success. Current work focuses on connecting these\nground-based signatures with imagery from drones, helicopters, and satellites.
DTEND;TZID=Pacific/Honolulu:20260207T023000Z
DTSTAMP:20260516T044424Z
DTSTART;TZID=Pacific/Honolulu:20260207T013000Z
LAST-MODIFIED:20260516T044424Z
LOCATION:Bilger 150
PRIORITY:5
SEQUENCE:0
SUMMARY;LANGUAGE=en-us:School of Life Sciences Seminar
TRANSP:OPAQUE
UID:177894266445057web-support-l@lists.hawaii.edu
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