ABSTRACT Climate change and Hybridization in Mangroves By Gordon S. Maxwell *& Sonjai Havanond ** The recent discovery of Thailand’s first recorded Red Mangrove Hybrid by Dr Sonjai Havanond at the Sirindhorn International Environment Park (SIEP) at Cha-am, Petchaburi Province is stimulating scientifically and significant environmentally. This paper will examine the implications of the Red mangrove hybrid (a cross between Rhizophora apiculata and R.mucronata) in terms of projected trends in climate change and attempt to make broader connections with some variations in genetic expression that has been reported within mangroves generally. A case will be made for re-affirming the advents of cyclic hybridization as postulated by Rattenbury in the 1960’s for the New Zealand angiosperm flora. Core concepts developed within Rattenbury’s cyclic hybridization hypothesis included temperature fluctuations and associated ecological dynamics favoring aspects of hybrid vigor. Notions of hybrid swarms, ecotypes, geotypes and the questionable stability and viability of newer mangrove species such as Kandelia obovata will be considered. The superior biomass proliferation displayed by the new Thai Red mangrove hybrid in terms of prop root formation and growth rates will also be discussed in the context of mangrove eco-restoration in more challenging shoreline habitats. *Open University of Hong Kong and Consultant, DMCR and SIEP **DMCR, Bangkok, Kingdom of Thailand
Programme & Abstract for the Presentation : International Mangrove Forum Mangrove Management Towards Sustainable Development Goals (SDGs) 23 August 2018 @ 13.00-17.00 hrs. FORTROP Room, 3rd Floor, 60th Year Building Faculty of Forestry, Kasetsart University, Bangkok
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