Genetic Consequences of Tropical Second-Growth Forest Regeneration-Reference-Cited by-同舟云学术

Genetic Consequences of Tropical Second-Growth Forest Regeneration

Published:2005-02-11 Issue:5711 Volume:307 Page:891-891
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Sezen Uzay U.¹,Chazdon Robin L.¹,Holsinger Kent E.¹

Affiliation:

1. Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT 06269–3043, USA.

Abstract

Secondary forests are more extensive than old-growth forests in many tropical regions, yet the genetic composition of colonizing populations is poorly understood. We analyzed the parentage of a founder population of 130 individuals of the canopy palm Iriartea deltoidea in a 24-year-old second-growth forest in lowland Costa Rica. Among 66 trees in adjacent old-growth forest, only two individuals contributed 56% of the genes in founders. Second-growth trees had lower genetic diversity and larger patches of similar genotypes than old-growth trees. Recovery of genetic diversity of populations in tropical second-growth forests may take many generations and will require continued dispersal from genetically diverse source populations.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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