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Abstract Detail

Conservation Biology

Loveless, Marilyn [1], Grogan, James [2].

Flowering phenology and its implications for tropical forest management: the case of mahogany (Swietenia macrophylla).

Flowering phenology constrains mating in a plant population,and generates the resource landscape for pollinator movement. But for no tropical timber species do we have a multi-year understanding of population- and individual-level flowering patterns. Sustainable timber extraction is predicated on reproduction by unlogged individuals to restore pre-logging population structure for future logging cycles. But current practices typically do not consider the population ecology of a species in prescribing extraction plans, harvest densities, or minimum cutting diameters. We describe population and individual floral phenology for mahogany (Swietenia macrophylla) in southern Para¬°, Brazil, over five consecutive years. Individual trees show strong between-year correlation in flowering order. Only trees larger than 30 cm in diameter have predictable annual or supra-annual flowering, but logging of large individuals drastically reduces total flower production by the post-logged population, and interplant distances between co-flowering trees increase dramatically following conventional logging. We consider the implications of these components of reproductive biology for sustainable management of tropical tree species.

Broader Impacts:

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Related Links:
Big-Leaf Mahogany in Brazil and South America

1 - THE COLLEGE OF WOOSTER, Department Of Biology, 931 College Mall, WOOSTER, OH, 44691, USA
2 - Yale University , School of Forestry and Environmental Science, New Haven, CT, USA

plant mating systems
Tropical forest management
Swietenia macrophylla
Sustainable forestry
gene flow.

Presentation Type: Oral Paper:Papers for Topics
Session: 30
Location: Union C/Hyatt
Date: Tuesday, July 10th, 2012
Time: 11:15 AM
Number: 30005
Abstract ID:599

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