Disturbance history and natural regeneration of an old-growth Korean pine-broadleaved forest in the Sikhote-Alin mountain range, Southeastern Russia

Omelko, Alexander M.; Ukhvatkina, Olga; Zhmerenetsky, Alexander

doi:10.1016/j.foreco.2015.10.036

Cited by 17 publications

(14 citation statements)

References 45 publications

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“…As the inverse J-shaped DBH distribution is observed for trees at all ontogenetic stages, it could be a structure that is relatively more stable than the bell-shaped DBH distribution [90]. The total number of Abies nephrolepis seedlings on Seorak Mountain was higher than that of Abies koreana seedlings on Jiri Mountain [63].…”

Section: Discussionmentioning

confidence: 89%

Dynamics of Abies Nephrolepis Seedlings in Relation to Environmental Factors in Seorak Mountain, South Korea

Kim¹,

Lim

Yun

2019

Forests

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We present novel evidence of environmental drivers of seedling density in Abies nephrolepis, an alpine and subalpine tree species. Continuous monitoring of natural conditions is required to understand forest ecosystem dynamics. We investigated Abies nephrolepis seedling dynamics in relation to biotic and abiotic factors. The survey, which included the measurement of trees and seedlings, was carried out from March to October in 2016 and 2018. Monitoring sites in the coniferous forests of Seorak Mountain were divided into 27 quadrats. We analyzed relationships using simple and multiple linear regression. The majority of Abies nephrolepis individuals had a diameter at breast height less than l0 cm, and the number of seedlings increased over the study period. This reflects survival and growth due to successive annual mast seeding events. Aspect direction (R2 = 0.201, p < 0.05), rock exposure (R2 = 0.364, p < 0.001), canopy openness (R2 = 0.322, p < 0.05), herbaceous cover (R2 = 0.268, p < 0.01), and basal area (R2 = 0.199, p < 0.05) show significant linear relationships with seedling density. Seedling density was positively related to rock exposure, canopy openness, and species richness, and there was a negative relationship between herbaceous cover and basal area (p < 0.0001). The relative importance of predictor variables was as follows: Rock exposure (40.3%), canopy openness (30.2%), basal area (13.9%), herbaceous cover (11.5%), and species richness (4.1%). Seedling density was most strongly influenced by the presence of large rocks, which provide shelter from harsh winds and a substrate for moss. We conclude that appropriate canopy openness creates a synergistic relationship. We found a positive association between the Abies nephrolepis seedling density in subalpine forests and certain physical environmental factors. Therefore, environmental gradients about the roles of rocks and canopies apply, even in this habitat.

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Section: Discussionmentioning

confidence: 89%

Dynamics of Abies Nephrolepis Seedlings in Relation to Environmental Factors in Seorak Mountain, South Korea

Kim¹,

Lim

Yun

2019

Forests

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“…The observed genetic diversity in the present study might be attributable to the genetic background, life history and population dynamics of P. koraiensis. Previous studies have found that P. koraiensis has a large population size, long life cycle, strong adaptability, long pollination distance and large genome size, and it has a complex genetic background, which allows it to generate high genetic diversity [48][49][50][51][52]. Natural selection under the changing environmental conditions is likely to lead to differences in genotype frequency among populations.…”

Section: Genetic Diversitymentioning

confidence: 99%

Genetic Diversity and Population Differentiation of Pinus koraiensis in China

Zhao

et al. 2021

Horticulturae

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Pinus koraiensis is a well-known precious tree species in East Asia with high economic, ornamental and ecological value. More than fifty percent of the P. koraiensis forests in the world are distributed in northeast China, a region with abundant germplasm resources. However, these natural P. koraiensis sources are in danger of genetic erosion caused by continuous climate changes, natural disturbances such as wildfire and frequent human activity. Little work has been conducted on the population genetic structure and genetic differentiation of P. koraiensis in China because of the lack of genetic information. In this study, 480 P. koraiensis individuals from 16 natural populations were sampled and genotyped. Fifteen polymorphic expressed sequence tag-simple sequence repeat (EST-SSR) markers were used to evaluate genetic diversity, population structure and differentiation in P. koraiensis. Analysis of molecular variance (AMOVA) of the EST-SSR marker data showed that 33% of the total genetic variation was among populations and 67% was within populations. A high level of genetic diversity was found across the P. koraiensis populations, and the highest levels of genetic diversity were found in HH, ZH, LS and TL populations. Moreover, pairwise Fst values revealed significant genetic differentiation among populations (mean Fst = 0.177). According to the results of the STRUCTURE and Neighbor-joining (NJ) tree analyses and principal component analysis (PCA), the studied geographical populations cluster into two genetic clusters: cluster 1 from Xiaoxinganling Mountains and cluster 2 from Changbaishan Mountains. These results are consistent with the geographical distributions of the populations. The results provide new genetic information for future genome-wide association studies (GWAS), marker-assisted selection (MAS) and genomic selection (GS) in natural P. koraiensis breeding programs and can aid the development of conservation and management strategies for this valuable conifer species.

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“…The observed genetic diversity in the present study might be attributed to the genetic background, life history, and population dynamics of P. koraiensis. Previous reports have found that P. koraiensis has a large population size, long life cycle, strong adaptability, long pollination distance and large genome size, and it has a complex genetic background, which allows it to generate high genetic diversity [46][47][48]. Over a long period of natural selection and succession, the natural distribution range and population number of P. koraiensis have greatly decreased, while those of man-made forests have increased in recent years.…”

Section: Genetic Diversitymentioning

confidence: 99%

Population Genetic Analysis of Pinus Koraiensis in China Inferred Using EST-SSR Markers

Li¹,

Zhao²,

Xu³

et al. 2020

Preprint

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Background Pinus koraiensis (commonly known as Korean pine), is a well-known conifer species in China with high economic, ornamental and ecological values. More than 50% of the P. koraiensis forests in the world are distributed in Northeast China, a region with abundant germplasm resources. However, these natural P. koraiensis populations are in danger of genetic erosion caused by continuous climate changes and frequent human activity. Little work has been conducted on the population genetic structure and genetic differentiation of P. koraiensis in China. Here, representative individuals from 16 natural P. koraiensis populations were sampled and genotyped, and polymorphic expressed sequence tag-simple sequence repeat (EST-SSR) markers were used to comprehensively evaluate genetic diversity, population structure and differentiation of P. koraiensis populations in China.ResultsA total of 480 samples from 16 populations were collected in the natural distribution area of P. koraiensis. Analysis of molecular variance (AMOVA) of the EST-SSR marker data showed that 33% of the total genetic variation was among populations and 67% was within populations. A high level of genetic diversity was found across P. koraiensis populations (average Na=10.33, Ne=2.514, He=0.521), and the highest levels of genetic diversity were found in Heihe (He=0.449), Zhanhe (He=0.413), Liangshui (He=0.370) and Tieli (He=0.414) populations. Moreover, pairwise Fst values reveled significant genetic differentiation among populations (mean Fst=0.177). Structure and Neighbor-joining (NJ) tree analyses and principal component analysis (PCA) revealed two genetic clusters: cluster 1 from Xiaoxinganling Mountains and cluster 2 from Changbaishan Mountains, which were consistent with the geographical distributions of the natural populations. ConclusionsThe findings provide new genetic information for future genome-wide association studies (GWAS), marker-assisted selection (MAS) and genomic selection (GS) in natural P. koraiensis breeding programs and can aid the development of conservation strategies for this valuable conifer species.

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Disturbance history and natural regeneration of an old-growth Korean pine-broadleaved forest in the Sikhote-Alin mountain range, Southeastern Russia

Cited by 17 publications

References 45 publications

Dynamics of Abies Nephrolepis Seedlings in Relation to Environmental Factors in Seorak Mountain, South Korea

Dynamics of Abies Nephrolepis Seedlings in Relation to Environmental Factors in Seorak Mountain, South Korea

Genetic Diversity and Population Differentiation of Pinus koraiensis in China

Population Genetic Analysis of Pinus Koraiensis in China Inferred Using EST-SSR Markers

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Disturbance history and natural regeneration of an old-growth Korean pine-broadleaved forest in the Sikhote-Alin mountain range, Southeastern Russia

Cited by 17 publications

References 45 publications

Dynamics of Abies Nephrolepis Seedlings in Relation to Environmental Factors in Seorak Mountain, South Korea

Dynamics of Abies Nephrolepis Seedlings in Relation to Environmental Factors in Seorak Mountain, South Korea

Genetic Diversity and Population Differentiation of Pinus koraiensis in China

Population Genetic Analysis of Pinus Koraiensis in China Inferred Using EST-SSR&nbsp;Markers

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Population Genetic Analysis of Pinus Koraiensis in China Inferred Using EST-SSR Markers