DOI: 10.1016/j.foreco.2012.10.017
Scopus记录号: 2-s2.0-84871440991
论文题名: Population genetics of Guibourtia chodatiana (Hassl.) J. Leonard, in a dry Chiquitano forest of Bolivia
作者: Ojeda-Camacho M. ; Kjær E.D. ; Philipp M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 289 起始页码: 525
结束页码: 534
语种: 英语
英文关键词: Allozymes
; Dry tropics
; Guibourtia chodatiana
; Pollen donors
; Selective logging
; Selfing rates
Scopus关键词: Allozymes
; Guibourtia chodatiana
; Pollen donors
; Selective logging
; Selfing
; Chromosomes
; Plants (botany)
; Logging (forestry)
; allozyme
; conspecific
; dry forest
; forestry practice
; fruit set
; gene flow
; guild
; legume
; outcrossing
; pollinator
; population genetics
; selective logging
; Biological Populations
; Bolivia
; Chromosomes
; Plants
; Pollen
; Pollination
; Selective Cutting
; Tropics
; Bolivia
; Chiquitania Forest
; Santa Cruz [Bolivia]
; Animalia
; Guibourtia
英文摘要: Selective logging is a widely extended forestry practice that affects tree populations by changing their spatial structure. As most tropical timber tree species are animal-pollinated, selective logging increase the average distance between conspecific trees and hereby affect the guild of pollinators and gene flow between the standing trees. In order to study the effects of logging on the population genetics of tropical timber tree species, we assessed selfing rates, genetic diversity, effective number of pollen donors and effective distances of pollination in progenies collected in a recently logged plot and a un-logged-control plot of Guibourtia chodatiana (Hassl.). We found outcrossing rates close to one, even in the logged plot where the density had been reduced to 55%. Mean expected heterozygosity was almost identical in the logged and un-logged plots (HeControl=0.38±0.20 SD; HeLogged=0.41±0.21 SD) and genetic differentiation between plots was very low (Fst=0.03). The logged population had a slightly higher effective number of pollen donors compared to the control (NepLogged=12.5; NepControl=10, respectively). However, the fruit set was almost twice in the control than in the logged plot. This finding suggests that there could be a pollinator limitation leading to reduction of fertilized ovules (i.e. fruits) in the logged plot. However, the larger distances of pollination in the logged than in the control plot (under the assumption of normal and negative exponential distributions) suggest that pollinators could bridge the inter-tree distances, despite the occurrence of logging. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66843
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, DK-1958 Frederiksberg C, Denmark; Department of Biology, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen, Denmark
Recommended Citation:
Ojeda-Camacho M.,Kjær E.D.,Philipp M.. Population genetics of Guibourtia chodatiana (Hassl.) J. Leonard, in a dry Chiquitano forest of Bolivia[J]. Forest Ecology and Management,2013-01-01,289