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Articles by Helena Korpelainen

Category : Research article

article id 1510, category Research article

Tähti Pohjanmies, Sakina Elshibli, Pertti Pulkkinen, Mari Rusanen, Pekka Vakkari, Helena Korpelainen, Tomas Roslin. (2016). Fragmentation-related patterns of genetic differentiation in pedunculate oak (Quercus robur) at two hierarchical scales. Silva Fennica vol. 50 no. 2 article id 1510. https://doi.org/10.14214/sf.1510

Keywords: marginal populations; Finland; genetic diversity; microsatellites

Highlights: While long-lived, widespread tree species should be resistant to genetic impoverishment, we detected high differentiation among populations and pronounced genetic structure within populations of Quercus robur in Finland; These patterns seem indicative of population processes active at range margins, and of disequilibrium following historic habitat change; Preservation of remaining genetic variation is thus important in the conservation of Q. robur.

Abstract | Full text in HTML | Full text in PDF | Author Info

Populations at species’ range margins are expected to show lower genetic diversity than populations at the core of the range. Yet, long-lived, widespread tree species are expected to be resistant to genetic impoverishment, thus showing comparatively high genetic diversity within populations and low differentiation among populations. Here, we study the distribution of genetic variation in the pedunculate oak (Quercus robur L.) at its range margin in Finland at two hierarchical scales using 15 microsatellite loci. At a regional scale, we compared variation within versus among three oak populations. At a landscape scale, we examined genetic structuring within one of these populations, growing on an island of ca 5 km². As expected, we found the majority of genetic variation in Q. robur to occur within populations. Nonetheless, differentiation among populations was markedly high (F_ST = 0.12) compared with values reported for populations of Q. robur closer to the core of its range. At the landscape level, some spatial and temporal sub-structuring was observed, likely explained by the history of land-use on the island. Overall, Q. robur fulfils the expectation of the central-marginal hypothesis of high differentiation among marginal populations, but the notable population differentiation has most likely been influenced also by the long, ongoing fragmentation of populations. Finnish oak populations may still be adjusting to the drastic habitat changes of the past centuries. Preservation of genetic variation within the remaining stands is thus an important factor in the conservation of Q. robur at its range margin.

Pohjanmies, University of Helsinki, Department of Agricultural Sciences, Spatial Foodweb Ecology Group, P.O. Box 27, FI-00014 University of Helsinki, Finland; University of Jyväskylä, Department of Biological and Environmental Sciences, P.O. Box 35, FI-40014 University of Jyväskylä, Finland E-mail: tahti.t.pohjanmies@jyu.fi
Elshibli, Natural Resources Institute Finland (Luke), Green technology, P.O. Box 18, FI-01301 Vantaa, Finland; University of Helsinki, Department of Agricultural Sciences, P.O. Box 27, FI-00014 University of Helsinki, Finland E-mail: sakina.elshibli@helsinki.fi
Pulkkinen, Natural Resources Institute Finland (Luke), Green technology, Haapastensyrjäntie 34, FI-12600 Läyliäinen, Finland E-mail: pertti.pulkkinen@luke.fi
Rusanen, Natural Resources Institute Finland (Luke), Green technology, P.O. Box 18, FI-01301 Vantaa, Finland E-mail: mari.rusanen@luke.fi
Vakkari, Natural Resources Institute Finland (Luke), Green technology, P.O. Box 18, FI-01301 Vantaa, Finland E-mail: pekka.vakkari@luke.fi
Korpelainen, University of Helsinki, Department of Agricultural Sciences, P.O. Box 27, FI-00014 University of Helsinki, Finland E-mail: helena.korpelainen@helsinki.fi
Roslin, University of Helsinki, Department of Agricultural Sciences, Spatial Foodweb Ecology Group, P.O. Box 27, FI-00014 University of Helsinki, Finland; Swedish University of Agricultural Sciences, Department of Ecology, P.O. Box 7044, SE-750 07 Uppsala, Sweden E-mail: tomas.roslin@helsinki.fi

article id 314, category Research article

Yuhua Wang, Helena Korpelainen, Chunyang Li. (2006). Microsatellite polymorphism in the edaphic spruce, Picea asperata, originating from the mountains of China. Silva Fennica vol. 40 no. 4 article id 314. https://doi.org/10.14214/sf.314

Keywords: genetic diversity; microsatellite polymorphism; micro-geographic differentiation; natural selection; mutation

Abstract | View details | Full text in PDF | Author Info

Microsatellite variation of Picea asperata Mast. originating from the mountains of China was investigated by analyzing variation at seven SSR loci in 250 individuals representing ten populations. A fair degree of genetic diversity and considerable population subdivision occurred with the mean gene diversity (H) of 0.707, and genetic distances among populations varying between 0.121 and 0.224 (F_ST) and between 0.100 and 0.537 (R_ST). However, inter-population genetic distances showed no correlation with geographic distances between the population sites. This ruled out a simple isolation by distance model and suggested that migration does not have a great impact. In fact, the amount of gene flow, detected using private alleles, was very low, equaling only 0.753. Allele permutation tests revealed that stepwise-like mutations, coupled with genetic drift, could contribute to population differentiation. Moreover, significant genetic differences between populations were detected at most loci. The results indicate that natural selection, presumably through environmental stress, may be one of the main factors causing micro-geographical differentiation in the genetic structure of P. asperata. Based on SSR genotypes, 70% of the 250 individuals were correctly classified into their sites of origin. This suggests that microsatellites (SSRs) are effective in distinguishing genotypes of P. asperata originating from diverse eco-geographical sites in China.

Wang, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041, China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, China E-mail: yw@nn.cn
Korpelainen, Department of Applied Biology, P.O. Box 27, FI-00014 University of Helsinki, Finland E-mail: hk@nn.fi
Li, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041, China E-mail: licy@cib.ac.cn

article id 326, category Research article

Xuejiang Zhang, Helena Korpelainen, Chunyang Li. (2006). Microsatellite variation of Quercus aquifolioides populations at varying altitudes in the Wolong Natural Reserve of China. Silva Fennica vol. 40 no. 3 article id 326. https://doi.org/10.14214/sf.326

Keywords: genetic differentiation; genetic variation; altitudinal gradients; microsatellites; Quercus aquifolioides

Abstract | View details | Full text in PDF | Author Info

Genetic variation and differentiation were investigated among five natural populations of Quercus aquifolioides occurring along an altitudinal gradient that varied from 2000 to 3600 m above sea level in the Wolong Natural Reserve of China, by analyzing variation at six microsatellite loci. The results showed that the populations were characterized by relatively high intra-population variation with the average number of alleles equaling 11.33 per locus and the average expected heterozygosity (H_E) being 0.779. The amount of genetic variation varied only little among populations, which suggests that the influence of altitude factors on microsatellite variation is limited. However, there is a significantly positive correlation between altitude and the number of low-frequency alleles (R² = 0.97, P < 0.01), which indicates that Q. aquifolioides from high altitudes has more unique variation, possibly enabling adaptation to severe conditions. F statistics showed the presence of a slight deficiency of heterozygosity (F_IS = 0.136) and a low level of differentiation among populations (F_ST = 0.066). The result of the cluster analysis demonstrated that the grouping of populations does not correspond to the altitude of the populations. Based on the available data, it is likely that the selective forces related to altitude are not strong enough to significantly differentiate the populations of Q. aquifolioides in terms of microsatellite variation.

Zhang, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041, P. R. China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, P. R. China E-mail: xz@nn.cn
Korpelainen, Department of Applied Biology, P.O. Box 27, FI-00014 University of Helsinki, Finland E-mail: hk@nn.fi
Li, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041, P. R. China E-mail: licy@cib.ac.cn

article id 381, category Research article

Jianxun Luo, Yuhua Wang, Helena Korpelainen, Chunyang Li. (2005). Allozyme variation in natural populations of Picea asperata. Silva Fennica vol. 39 no. 2 article id 381. https://doi.org/10.14214/sf.381

Keywords: allozymes; genetic variability; Picea asperata

Abstract | View details | Full text in PDF | Author Info

A survey of allozymic alleles and genetic diversity was conducted for ten natural populations of Picea asperata Mast. originating from the mountains of Southwest China. A total of twenty-seven alleles at seventeen loci were observed. Ten of the loci were found monomorphic. Our results showed that the populations sampled were characterized by low genetic diversity (mean He = 0.096) and a low level of inbreeding (mean Fis = 0.005). The UPGMA tree of genetic relationships indicated that there was significant differentiation among populations. The coefficient of genetic differentiation among populations, based on Fst, equaled 0.311. Such extensive inter-populational differentiation detected in P. asperata could have resulted from allele frequency divergence among populations, particularly, in one population. Introgression from another species, variation in environmental conditions, and differing selection pressures could be some of the factors attributing to significant differences among populations. In addition, our results showed that the geographic and genetic distances were not correlated in the populations of P. asperata. Based on the genetic information obtained, we concluded that monitoring appropriate genetic markers may be an effective means of identifying potential genetic changes occurring during forest tree evolution.

Luo, Sichuan Academy of Forestry, Chengdu 610081, P. R. China E-mail: jl@nn.cn
Wang, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041, P. R. China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, P. R. China E-mail: yw@nn.cn
Korpelainen, Department of Applied Biology, P.O. Box 27, FI-00014 University of Helsinki, Finland E-mail: hk@nn.fi
Li, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041, P. R. China E-mail: licy@cib.ac.cn

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Järveläinen V.-P., (1980) Who is a farmer? Silva Fennica vol. 14 no. 4 article id 5094 (remove) | Edit comment

Partanen J., Häkkinen R. et al. (2026) Short-day treatment in late summer reduces the c.. Silva Fennica vol. 60 no. 2 article id 25053 (remove) | Edit comment

Jåstad E. O., Nagel N. O. et al. (2023) The location and capacity-dependent price impact.. Silva Fennica vol. 57 no. 1 article id 23001 (remove) | Edit comment

Järveläinen V.-P., Riihinen P. (1979) Forestry and rural development. Silva Fennica vol. 13 no. 3 article id 5036 (remove) | Edit comment

Hallongren H., Kankaanhuhta V. et al. (2016) Cleaning Scots pine seedling stands with mechani.. Silva Fennica vol. 50 no. 3 article id 1514 (remove) | Edit comment

de Miguel S., (2023) Artificial intelligence-driven disruption in sci.. Silva Fennica vol. 57 no. 1 article id 23011 (remove) | Edit comment

Saarnijoki S., (1942) Distribution of European white elm in flooded sh.. Silva Fennica vol. no. 58 article id 4578 (remove) | Edit comment

Selander J., Kalo P. (1979) Evaluation of resistance of Scots pine seedlings.. Silva Fennica vol. 13 no. 2 article id 5022 (remove) | Edit comment

Chianucci F., (2015) A note on estimating canopy cover from digital c.. Silva Fennica vol. 50 no. 1 article id 1518 (remove) | Edit comment

Kantola M., (1979) Social promotion of forest workers. Silva Fennica vol. 13 no. 3 article id 5040 (remove) | Edit comment

Kellomäki S., Hari P. et al. (1980) Eco-physiological studies on young Scots pine st.. Silva Fennica vol. 14 no. 3 article id 5079 (remove) | Edit comment

Kuusela K., (1979) Forest balance on the national level. Silva Fennica vol. 13 no. 3 article id 5044 (remove) | Edit comment

Kalliola R., Saarinen T. et al. (2021) Seasonal variations of foliar element distributi.. Silva Fennica vol. 55 no. 1 article id 10444 (remove) | Edit comment

Raulo J., (1978) Forestation chain for birch (Betula pendula Roth.. Silva Fennica vol. 12 no. 1 article id 4984 (remove) | Edit comment

Koski V., (1980) Minimum requirements for seed orchards of Scots .. Silva Fennica vol. 14 no. 2 article id 5076 (remove) | Edit comment

Leikola M., (1980) Book review: Utilization of forests in urban pla.. Silva Fennica vol. 14 no. 1 article id 5072 (remove) | Edit comment

Bolding M. C., Conrad IV J. L. et al. (2026) Productivity and cost of cut-to-length harvestin.. Silva Fennica vol. 60 no. 2 article id 26004 (remove) | Edit comment

Uotila K., Saksa T. (2021) Cost-efficient pre-commercial thinning: effects .. Silva Fennica vol. 55 no. 4 article id 10507 (remove) | Edit comment

Räsänen A. A., (1937) Personnell maintenance in forest work and floating Silva Fennica vol. no. 42 article id 4519 (remove) | Edit comment

Finnish Society of Forest Science ., (1989) Instructions to authors. Silva Fennica vol. 23 no. 1 article id 5373 (remove) | Edit comment

Niemelä J. S., (1993) Marketing-oriented strategy concept and its empi.. Acta Forestalia Fennica vol. 0 no. 240 article id 7686 (remove) | Edit comment

Olsson P.-O., Kantola T. et al. (2016) Development of a method for monitoring of insect.. Silva Fennica vol. 50 no. 2 article id 1495 (remove) | Edit comment

Tikkanen I., (1986) Analysis and evaluation of public forest policies. Silva Fennica vol. 20 no. 4 article id 5279 (remove) | Edit comment

Nisula P., (1968) A proposal for the determination of total volume.. Silva Fennica vol. 2 no. 1 article id 4761 (remove) | Edit comment

Kārkliņa A., Brūmelis G. et al. (2020) Effect of salvage-logging on post-fire tree esta.. Silva Fennica vol. 54 no. 5 article id 10334 (remove) | Edit comment

Toppinen A., Hänninen R. et al. (1996) A dynamic forecasting model for the Finnish pulp.. Silva Fennica vol. 30 no. 4 article id 5570 (remove) | Edit comment

Tyrväinen J., (1995) Wood and fiber properties of Norway spruce and i.. Acta Forestalia Fennica vol. 0 no. 249 article id 7511 (remove) | Edit comment

Virtanen P., (1987) The forest in Finnish folk lore Silva Fennica vol. 21 no. 4 article id 5336 (remove) | Edit comment

Pulkkinen M., (2012) On non-circularity of tree stem cross-sections: .. Silva Fennica vol. 46 no. 5B article id 924 (remove) | Edit comment

Kilpiö A., (1937) Revenue and expenditure of rural municipalities Silva Fennica vol. no. 42 article id 4514 (remove) | Edit comment

Kellomäki S., Kolström T. et al. (1989) Simulations on the occurrence of dead trees in n.. Silva Fennica vol. 23 no. 3 article id 5382 (remove) | Edit comment

Muinonen E., Anttila P. et al. (2013) Estimating the bioenergy potential of forest chi.. Silva Fennica vol. 47 no. 4 article id 1022 (remove) | Edit comment

Valkonen M.-L., Hänninen H. et al. (1990) Frost hardiness of Scots pine seedlings during d.. Silva Fennica vol. 24 no. 4 article id 5433 (remove) | Edit comment

Tumenjargal B., Ishiguri F. et al. (2018) Geographic variations of wood properties of L.. Silva Fennica vol. 52 no. 4 article id 10002 (remove) | Edit comment

Jutila K. T., (1926) Studies on the economic conditions and colonizat.. Acta Forestalia Fennica vol. 28 no. 3 article id 7098 (remove) | Edit comment

Solin P., (1970) Cold storage of Norway spruce cones and its effe.. Silva Fennica vol. 4 no. 1 article id 4810 (remove) | Edit comment

Järveläinen V.-P., (1969) Opinions about silviculture in farm forestry in .. Silva Fennica vol. 3 no. 3 article id 4800 (remove) | Edit comment

Linkola K., (1926) Plan for establishment of protected areas in sta.. Silva Fennica vol. 0 no. 1 article id 4434 (remove) | Edit comment

Bornebusch C. H., (1929) Forest types in Denmark Acta Forestalia Fennica vol. 34 no. 11 article id 7224 (remove) | Edit comment

Holopainen V., (1959) Suomen metsien luovutusmäärä hakkuuvuosina 1955/.. Silva Fennica vol. no. 97 article id 4683 (remove) | Edit comment

Jamalainen E. A., (1961) Damage by low-temperature parasitic fungi on con.. Silva Fennica vol. 0 no. 108 article id 4703 (remove) | Edit comment

Kärenlampi P., (1987) The decay resistance and moisture dynamics of wood Silva Fennica vol. 21 no. 2 article id 5310 (remove) | Edit comment

Ilvessalo Y., (1937) Principles of forest taxation Silva Fennica vol. no. 42 article id 4515 (remove) | Edit comment

Saari E., (1969) International co-operation in forest research work Silva Fennica vol. 3 no. 2 article id 4796 (remove) | Edit comment

Nuorteva M., (1972) Use of the nuclear polyhedrosis virus in the con.. Silva Fennica vol. 6 no. 3 article id 4870 (remove) | Edit comment

Huuri O., (1965) The effects of storage in cones on the viability.. Acta Forestalia Fennica vol. 78 no. 5 article id 7158 (remove) | Edit comment

Simula M., (1985) Forestry and development - a global viewpoint. Silva Fennica vol. 19 no. 4 article id 5248 (remove) | Edit comment

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Korpela I., Mehtätalo L. et al. (2014) Tree species identification in aerial image data.. Silva Fennica vol. 48 no. 3 article id 1087 (remove) | Edit comment

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