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Abstract Detail


Conservation Biology

Quinteros Casaverde, Natalia [1], Flores, Cesar [2], Morgan , Tamie [3], Williams, Dean [4].

Genetic structure of fragmented Polylepis multijuga Plige (Rosaceae) forests.

For some tree species, anthropogenic landscape change and habitat fragmentation reduce the genetic connectivity and diversity of populations. Polylepis multijuga Plige is an endemic tree species found only in the northern Andes of Peru. P. multijuga forests are currently highly fragmented and threatened by harvesting for firewood. The timing of fragmentation is not well understood and may have started in Pre-Columbian times with the Chachapoya Culture (AD 750800). P. multijuga is wind pollinated and its seeds are wind dispersed which may effectively link fragments with gene flow thereby counteracting the effects of drift and loss of genetic diversity. We collected samples from more than 400 P. multijuga trees in four fragments separated by 7 78 km. We then measured the genetic diversity within and between fragments using AFLP and chloroplast markers to evaluate genetic differentiation and connectivity between fragments. These data were then integrated into a GIS geodatabase along with digital elevation data (DEM) to test for geographic features that correlate with levels of genetic differentiation between fragments.

Broader Impacts:


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1 - Texas Christian University, Environmental Science, 2951 Sandage Ave Apt 606 , Fort Worth, Texas, 76109, USA
2 - Amazonicos por la Amazonia, Mz N, Lote 01, Urb. Vista Alegre, Moyobamba, Amazonas, Peru
3 - Texas Christian University, Environmental Science, Fort Worth, Texas, USA
4 - Texas Christian University, Biology, Fort Worth, Texas, USA

Keywords:
population structure
endemism
P. multijuga
fragmentation.

Presentation Type: Poster:Posters for Topics
Session: P
Location: Hall A/Convention Center
Date: Monday, August 2nd, 2010
Time: 5:30 PM
Number: PCB009
Abstract ID:629


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