Mangroves in a Changing World: Biogeography and Ecological Genomics of Southeast Asian Mangroves

概要

Invited Talk
Invited Talk 4

Mangroves in a Changing World:
Biogeography and Ecological Genomics of
Southeast Asian Mangroves
Alison K.S. WEE
School of Environmental and Geographical Sciences, University of Nottingham Malaysia Campus, Jalan Broga,
Semenyih, 43500 Selangor, Malaysia

Mangroves are one of the most threatened ecosystems in the world. Understanding the drivers and limitations of gene flow,
phylogeography, genetic adaptation and tools for natural resource management is crucial to effectively address the threats, conserve
the long-term evolutionary potential, and ensure the sustainable management of mangroves. The first part of this talk summarizes
key research findings on the biogeography of major mangrove tree species in Southeast Asia and the greater Indo-West Pacific
region. In essence, propagule dispersal capabilities, land barriers and ocean currents are drivers of gene flow and underscores
the importance of long-distance dispersal in connecting fragmented mangrove populations. The second part of the presentation
describes our work on abiotic stress response in mangroves, especially at the species range limits. Current understanding of the
molecular mechanism underlying stress adaptation points toward diverging strategies in stress response, even among closely related
species. These studies will be important in estimating the adaptive potential of mangroves under climate change. The third part of
this talk focuses on recent proof-of-concept studies on the application of environmental DNA (eDNA) as a biomonitoring tool in
mangroves. Findings showed that fish communities change across the salinity gradient, and that biological invasion is a threat to the
mangrove ecosystem. Collectively, these studies highlight the genetic uniqueness in Southeast Asian mangroves, the urgency of their
conservation and how recent technological advances can contribute to this cause. ...

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