Anthropogenic alterations of genetic diversity within tree populations: Implications for forest ecosystem resilience

Schaberg, Paul G.; DeHayes, Donald H.; Hawley, Gary J.; Nijensohn, Samuel E.

doi:10.1016/j.foreco.2008.06.038

Cited by 113 publications

(76 citation statements)

References 71 publications

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“…Phenotypic plasticity and the adaptive potential of forest trees are determined by their genetic composition (Hosius et al 2006, Schaberg et al 2008. In Central Europe, F. sylvatica exhibits a high genetic diversity within populations (Konnert 1995;Mül-ler-Starck et al 1992;Vornam et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Late frost sensitivity of juvenile Fagus sylvatica L. differs between southern Germany and Bulgaria and depends on preceding air temperature

et al. 2011

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Section: Introductionmentioning

confidence: 99%

Late frost sensitivity of juvenile Fagus sylvatica L. differs between southern Germany and Bulgaria and depends on preceding air temperature

et al. 2011

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“…heterozygote excess) for F IS index were observed (Table 1). The deficit of heterozygotes in populations out of HardyWeinberg equilibrium indicates the existence of biotic and abiotic factors causing change during the periods of pre-and post-disturbance populations (Andre et al, 2008;Schaberg et al, 2008;Jacquemyn et al, 2012). Habitat disturbance seems to be one of the factors that caused the isolation of populations from one another, the progressive reduction in pollen flow into stands and the reduction in the population size (Young and Clarke, 2000;Vergeer et al, 2003;Young and Pickup, 2010).…”

Section: Discussionmentioning

confidence: 99%

Population genetic structure of an extremely logged tree species Guaiacum sanctum L. in the Yucatan Peninsula, Mexico

et al. 2016

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Habitat disturbance in tropical forests has affected the viability of several tree species. In Mexico, populations of Guaiacum sanctum have disappeared in some regions due to a strong habitat reduction which could endanger the genetic diversity and connectivity of remnant populations. In this study, 17 populations from the Yucatán Peninsula were analyzed with seven nuclear microsatellites. Several parameters describing the genetic diversity were estimated. The genetic structure was evaluated using Bayesian cluster analysis. Population bottlenecks, effective population size, and genetic connectivity were estimated. Populations of G. sanctum showed high values of genetic diversity. Two genetic groups with contrasting distributions were detected, the first one located in northern Yucatán and Quintana Roo and the second, in southern Campeche. Evidence of population bottleneck was detected only for Campeche populations. Also, we found indications of significant levels of inbreeding and a low effective population size. The connectivity analysis revealed exchange among populations of G. sanctum but the habitat fragmentation may act to impede gene flow, contributing to the division observed between clusters. This genetic differentiation was possibly caused by environmental pressures, although effects of historical extensive logging practices occurred in southern Mexico during the last few decades cannot be discarded. Fragmentation has a negative effect on ecosystem services and on the availability of favorable sites for seedling establishment, which could disturb pollination and dispersion processes, modifying in the long term the effective population size.

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“…In such cases, high genetic variability no longer presents an adaptive advantage and may be even disadvantageous for the population. This type of adaptation of forest trees to a polluted environment was observed in Norway spruce, European silver fir, common beech and black and Scots pine (Longauer et al 2001;Korshikov et al 2002;Schaberg et al 2008). A decrease in heterozygosity within individuals can be associated with decreased resistance to diseases and might affect population growth.…”

Section: Population Genetics: Heavy Metal Impactmentioning

confidence: 91%

Adaptation Mechanisms of Pinus sylvestris L. in Industrial Areas

et al. 2015

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Anthropogenic alterations of genetic diversity within tree populations: Implications for forest ecosystem resilience

Cited by 113 publications

References 71 publications

Late frost sensitivity of juvenile Fagus sylvatica L. differs between southern Germany and Bulgaria and depends on preceding air temperature

Late frost sensitivity of juvenile Fagus sylvatica L. differs between southern Germany and Bulgaria and depends on preceding air temperature

Population genetic structure of an extremely logged tree species Guaiacum sanctum L. in the Yucatan Peninsula, Mexico

Adaptation Mechanisms of Pinus sylvestris L. in Industrial Areas

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