Journal article

Vulnerability of native savanna trees and exotic Khaya senegalensis to seasonal drought

Stefan K Arndt, Gregor J Sanders, Mila Bristow, Lindsay B Hutley, Jason Beringer, Stephen J Livesley

TREE PHYSIOLOGY | OXFORD UNIV PRESS | Published : 2015

Abstract

Seasonally dry ecosystems present a challenge to plants to maintain water relations. While native vegetation in seasonally dry ecosystems have evolved specific adaptations to the long dry season, there are risks to introduced exotic species. African mahogany, Khaya senegalensis Desr. (A. Juss.), is an exotic plantation species that has been introduced widely in Asia and northern Australia, but it is unknown if it has the physiological or phenotypic plasticity to cope with the strongly seasonal patterns of water availability in the tropical savanna climate of northern Australia. We investigated the gas exchange and water relations traits and adjustments to seasonal drought in K. senegalensis ..

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Grants

Awarded by Australian Research Council (ARC)


Awarded by ARC FT


Funding Acknowledgements

The study was supported by funding from the Australian Research Council (ARC) grant LP100100073 and the Australian Department of Climate Change, the NT Department of Business and Employment, the NT Department of Natural Resources Environment, the Arts and Sport, and the NT Department of Regional Development, Primary Industries, Fisheries and Resources. We thank Mareike Hirsch, Stacey Baldwin and Pippa Featherston for assistance with the collection of field data and Northern Tropical Timbers and African Mahogany Australia for access to research sites. J.B. is funded under an ARC FT (FT1110602). Support for collection of data was also provided through the Australia Terrestrial Ecosystem Research Network (TERN, www.tern.org.au).