Genetic Consequences of Tropical Second-Growth Forest Regeneration

@article{Sezen2005GeneticCO,
  title={Genetic Consequences of Tropical Second-Growth Forest Regeneration},
  author={Uzay U Sezen and Robin L. Chazdon and Kent E. Holsinger},
  journal={Science},
  year={2005},
  volume={307},
  pages={891 - 891}
}
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… Expand
Multigenerational genetic analysis of tropical secondary regeneration in a canopy palm.
TLDR
The findings highlight the importance of gene flow from diverse seed and pollen sources for sustaining levels of genetic diversity of tree populations in second-growth forests. Expand
Genetic conservation of a threatened Neotropical palm through community-management of fruits in agroforests and second-growth forests
TLDR
Evaluated the value of community-managed agroforests and secondary forests for conserving genetic structure and diversity of Euterpe edulis, an endemic palm explored for fruit and palm heart production and investigated the genetic diversity of seeds extracted during pulp removal, proving the potential of using these seeds to recover overexploited populations. Expand
Genetic diversity and population structure of Quercus rubra (Fagaceae) in old-growth and secondary forests in southern New England
TLDR
Results suggest that deforestation for agriculture may reduce genetic diversity of forest trees, particularly in the first generation after deforestation, but that some recovery of this diversity is likely in these patchy landscapes. Expand
Disturbance and Resilience in Tropical American Palm Populations and Communities
TLDR
This work reviews resilience to natural and anthropogenic disturbance of palm populations and communities in tropical America and recommends emphasis on long-term experiments and on the use of mechanistic approaches in future research to facilitate integration of available data into a theoretical ecological framework. Expand
Colonization processes and the maintenance of genetic diversity: insights from a pioneer rainforest tree, Aucoumea klaineana
TLDR
It is suggested that while high local genetic variability is of general importance to forest tree survival, the proximate mechanisms by which it is achieved may follow very different scenarios. Expand
Spatial Scales of Pollen and Seed-Mediated Gene Flow in Tropical Rain Forest Trees
TLDR
Reviewing studies of gene flow and population genetic structure in tropical rain forest trees and places them in ecological and biogeographic context finds significantly higher genetic differentiation in tropical trees. Expand
Pollen flow in fragmented landscapes maintains genetic diversity following stand-replacing disturbance in a neotropical pioneer tree, Vochysia ferruginea Mart
TLDR
The results indicated that the mating patterns of V. ferruginea are relatively robust to density differences between old growth and secondary forest stands, and it was observed that pollen-mediated gene flow possibly maintained the genetic diversity of open-pollinated progeny arrays in stands of secondary forest adults. Expand
Proximity is not a proxy for parentage in an animal-dispersed Neotropical canopy palm
TLDR
Observed patterns of seedling distribution and spatial genetic structure are largely determined by the behaviour of vertebrate seed dispersers rather than by spatial proximity to parental trees. Expand
Genomic diversity is similar between Atlantic Forest restorations and natural remnants for the native tree Casearia sylvestris Sw.
TLDR
Study of genetic diversity, genetic structure and differentiation between restored and natural populations of the native tree Casearia sylvestris in the Atlantic Forest of Brazil demonstrates that genotyping-by-sequencing can be a useful tool in restoration genetics. Expand
Roles of seed and pollen dispersal in natural regeneration of Castanopsis fargesii (Fagaceae): Implications for forest management
TLDR
The results suggest the critical role of seed dispersal in shaping genetic composition and diversity in the second-growth forests and management that facilitates the connectivity of newly regenerated stands with mature forests could be effective for natural regeneration. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 11 REFERENCES
Reproductive dominance of pasture trees in a fragmented tropical forest mosaic
TLDR
The pedigree showed that most seedlings had been produced by sequentially fewer adults in pasture, creating a genetic bottleneck, and implicated shifts in the foraging of animals that disperse pollen and seed in a secondary constriction of the bottleneck. Expand
The breeding structure of a tropical keystone plant resource
TLDR
Paternity analysis techniques are used to reconstruct the genotypes of pollen donor trees and to estimate pollen dispersal distances and breeding population size parameters for Panamanian populations of seven species of monoecious strangler figs, a particularly widespread and influential group of keystone producers. Expand
Restoration of genetic diversity in the dry forest tree Swietenia macrophylla (Meliaceae) after pasture abandonment in Costa Rica
TLDR
The data revealed that earlier successional sites have more alleles than older sites, supporting the existence of extensive gene flow, and that genetic diversity of adult trees does not solely determine the diversity of seedlings and saplings found around them. Expand
Food and Agricultural Organization of the United Nations (FAO), FAO For
  • 2001
Materials and Methods are available as supporting material online on Science Online
    Materials and methods are available as supporting material on Science Online
      ...
      1
      2
      ...