Effect of stand origin on the genetic diversity of Norway spruce (Picea abies Karst.) populations

doi:10.1016/0378-1127(92)90014-Z

Forest Ecology and Management

Volume 54, Issues 1–4, November 1992, Pages 215-223

https://doi.org/10.1016/0378-1127(92)90014-Z Get rights and content

Abstract

Isozyme analysis was applied to determine the genetic structure of 14 Norway spruce populations from Slovakia. Gene diversity as well as observed heterozygosity proved to be comparatively high. No essential differences were found between virgin forests and naturally regenerated stands. On the other hand, the genetic variation in artificially established stands proved generally to be decreased. The changed genetic structure is reflected also by large values of genetic distances of these stands from all remaining populations as well as from each other.

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Cited by (57)

Effect of fire and thinning on fine-scale genetic structure and gene flow in fire-suppressed populations of sugar pine (Pinus lambertiana Dougl.)
2019, Forest Ecology and Management
Historically, frequent, low-severity fires in dry western North American forests were a major driver of ecological patterns and processes, creating resilient ecosystems dominated by widely-spaced pine species. However, a century of fire-suppression has caused overcrowding, altering forest composition to shade-tolerant species, while increasing competition and leaving trees stressed and susceptible to pathogens, insects, and high-severity fire. Exacerbating the issue, fire incidence is expected to increase with changing climate, while fire season has been observed to begin earlier and last longer than historic trends. Forest thinning and prescribed fire have been identified as important management tools to mitigate these risks. Yet little is known of how thinning, fire, or their interaction affect contemporary evolutionary processes of constituent pine species that influence fitness and play an important role in the opportunity for selection and population persistence. We assessed the impact of widely used fuel reduction treatments on fine-scale gene flow on an ecologically important and historically dominant shade-intolerant pine species of the Sierra Nevada, Pinus lambertiana Dougl. Treatment prescription (no-thin-no-fire, thin-no-fire, and fire-and-thin) was found to differentially affect both fine-scale spatial and genetic structure as well as effective gene flow in this species. Specifically, the thin-no-fire prescription increases genetic structure (spatial autocorrelation of relatives) between adults and seedlings, while seed and pollen dispersal increase and decrease, respectively, as a function of increasing disturbance intensity. While these results may be specific to the stands at our study site, they indicate how assumptions relating to genetic effects based on spatial structure can be misleading (for instance, in many stands the presence or absence of spatial structure was not indicative the presence or absence of genetic structure). It is likely that these disequilibrated systems will continue to evolve on unknown evolutionary trajectories. The long-term impacts of management practices on reduced fitness from inbreeding depression should be continually monitored to ensure resilience to increasingly frequent and severe fire, drought, and pest stresses.
Site-effects on biomass allometric models for early growth plantations of Norway spruce (Picea abies (L.) Karst.)
2018, Biomass and Bioenergy
Citation Excerpt :
However, this may not hold for planted forests, as many progenies may be seeded from the fewer trees, and therefore share a similar genotype. Our study was only of plantation stands, which have been demonstrated to be less genetically diverse than natural forests [55]. Since lower genetic variability within the forest stand also reduces morphological variation in tree dimension and in the allocation of biomass to tree parts, this may increase the relative proportion of overall variation explained by between stand effects.
Although it is commonly assumed that biomass allometric models are site specific, evaluations of site-effects are rarely undertaken. In this paper we develop biomass-allometric models to determine site influences. This study is based on data from 240 Norway spruce trees (Picea abies (L.) Karst.), growing in 24 early-growth plantations. A multilevel modelling approach was adopted and intraclass correlation was used to evaluate site effects. Results indicated that biomass allometric models were highly specific to sites and that, depending on the biomass component and the type of predictor adopted, some 33% and 86% of overall model variance could be attributed to forest stand effects. The remaining variance was attributable within stand variability. Stem biomass was the most site-specific biomass component whereas branch biomass was the least influenced by site effects. Diameter at collar height (D) was less site-specific than height (H) in predicting biomass. Using D and H within the same model as distinct predictors, although improving the model fit, increased the model site-specificity. However, when D and H were combined in one predictor expression (i.e. D²H), this reduced model site specificity, despite requiring fewer parameters than other models. This also compensated for undesirable collinearity effects amongst predictor variables. Furthermore, for the sampled diameter range, the site-specificity was mainly driven by biomass allocation pattern (to branches, needles and roots). The considerable between site variability of allometric relationships suggests that consideration of stand effects is essential for the robust prediction of biomass.
Inconsistent phenotypic differentiation at physiological traits in Norway spruce (Picea abies Karst.) provenances under contrasting water regimes
2023, Central European Forestry Journal
Genetic diversity of Norway spruce ecotypes assessed by GBS-derived SNPs
2021, Scientific Reports
From allozymes to NGS: population genetics of forest trees in Slovakia in the past 40 years
2021, Biologia
Isozyme polymorphism and seed and cone variability of Scots pine (Pinus sylvestris l.) in relation to local environments in Poland
2020, Folia Forestalia Polonica, Series A

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Forest Ecology and Management

Abstract

References (18)

Forstliches Saat-und Pflanzgut

Smernice MLVH SSR na uznávanie lesných porastov na zber a prenos semena a sadeníc. Spravodajca MLVH

Some distance properties of latent root and vector methods used in multivariate analysis

Biometrika

The importance of genetic multiplicity for tolerance of atmospheric pollution

Genetische Implikationen waldbaulicher und züchterischer Massnahmen

Allg. Forst Jagdztg.

The relation of growth to heterozygosity in pitch pine

Evolution

Allozyme frequency distribution in four Swedish populations of Norway spruce (Picea abies K.) I. Estimations of genetic variation within and among populations, genetic linkage and a mating system parameter

Hereditas

Association between heterozygosity and growth rate variables in three western forest trees

Analysis of linkage in Picea abies

Hereditas

Cited by (57)

Effect of fire and thinning on fine-scale genetic structure and gene flow in fire-suppressed populations of sugar pine (Pinus lambertiana Dougl.)

Site-effects on biomass allometric models for early growth plantations of Norway spruce (Picea abies (L.) Karst.)

Inconsistent phenotypic differentiation at physiological traits in Norway spruce (Picea abies Karst.) provenances under contrasting water regimes

Genetic diversity of Norway spruce ecotypes assessed by GBS-derived SNPs

From allozymes to NGS: population genetics of forest trees in Slovakia in the past 40 years

Isozyme polymorphism and seed and cone variability of Scots pine (Pinus sylvestris l.) in relation to local environments in Poland