Search Results - "Pertti Pulkkinen"

No difference in the maximum frost hardiness of different pedunculate oak populations in Finland by Repo, Tapani, Volanen, Virva, Pulkkinen, Pertti

“…The natural northern distribution limit for pedunculate oak ( L.) is in southern Finland. We hypothesized that the maximum frost hardiness (FH) in the winter…”
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A global view of aspen: Conservation science for widespread keystone systems by Rogers, Paul C., Pinno, Bradley D., Šebesta, Jan, Albrectsen, Benedicte R., Li, Guoqing, Ivanova, Natalya, Kusbach, Antonín, Kuuluvainen, Timo, Landhäusser, Simon M., Liu, Hongyan, Myking, Tor, Pulkkinen, Pertti, Wen, Zhongming, Kulakowski, Dominik

“…Across the northern hemisphere, six species of aspen (Populus spp.) play a disproportionately important role in promoting biodiversity, sequestering carbon,…”
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Assessment of European and hybrid aspen clones efficiency based on height growth and removal percentage of petroleum hydrocarbons—a field trial by Salam, Mir Md Abdus, Mohsin, Muhammad, Rasheed, Fahad, Ramzan, Muhammad, Zafar, Zikria, Pulkkinen, Pertti

“…Soils polluted by organic or inorganic pollutants are an emerging global environmental issue due to their toxic effects. A phytoremediation experiment was…”
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Effects of water availability on a forestry pathosystem: fungal strain-specific variation in disease severity by Linnakoski, Riikka, Sugano, Junko, Junttila, Samuli, Pulkkinen, Pertti, Asiegbu, Fred O., Forbes, Kristian M.

“…Norway spruce is one of the most important commercial forestry species in Europe, and is commonly infected by the bark beetle-vectored necrotrophic fungus,…”
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Spatial location dominates over host plant genotype in structuring an herbivore community by Tack, Ayco J. M, Ovaskainen, Otso, Pulkkinen, Pertti, Roslin, Tomas

“…Recent work has shown a potential role for both host plant genotype and spatial context in structuring insect communities. In this study, we use three separate…”
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Effects of Contaminated Soil on the Survival and Growth Performance of European ( Populus tremula L.) and Hybrid Aspen ( Populus tremula L. × Populus tremuloides Michx.) Clones Based on Stand Density by Salam, Mir Md Abdus, Ruhui, Wen, Sinkkonen, Aki, Pappinen, Ari, Pulkkinen, Pertti

“…This study was conducted to assess the survival rates, growth, and chlorophyll fluorescence (Fv/Fm) of four hybrid aspen (14, 191, 27, 291) and two European…”
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QTL mapping of the narrow-branch “Pendula” phenotype in Norway spruce (Picea abies L. Karst.) by Gil-Muñoz, Francisco, Bernhardsson, Carolina, Ranade, Sonali Sachin, Scofield, Douglas G., Pulkkinen, Pertti O., Ingvarsson, Pär K., García-Gil, M. Rosario

“…Pendula-phenotyped Norway spruce has a potential forestry interest for high-density plantations. This phenotype is believed to be caused by a dominant single…”
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Testing Projected Climate Change Conditions on the Endoconidiophora polonica / Norway spruce Pathosystem Shows Fungal Strain Specific Effects by Linnakoski, Riikka, Forbes, Kristian M, Wingfield, Michael J, Pulkkinen, Pertti, Asiegbu, Fred O

“…Climate changes, exemplified by increased temperatures and CO concentration, pose a global threat to forest health. Of particular concern are pests and…”
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Fragmentation-related patterns of genetic differentiation in pedunculate oak (Quercus robur) at two hierarchical scales by Pohjanmies, Tähti, Elshibli, Sakina, Pulkkinen, Pertti, Rusanen, Mari, Vakkari, Pekka, Korpelainen, Helena, Roslin, Tomas

“…Populations at species’ range margins are expected to show lower genetic diversity than populations at the core of the range. Yet, long-lived, widespread…”
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Seasonal variation in the content of hydrolyzable tannins, flavonoid glycosides, and proanthocyanidins in oak leaves by Salminen, J.P, Roslin, T, Karonen, M, Sinkkonen, J, Pihlaja, K, Pulkkinen, P

“…Oaks have been one of the classic model systems in elucidating the role of polyphenols in plant-herbivore interactions. This study provides a comprehensive…”
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Genetic diversity and connectivity shape herbivore load within an oak population at its range limit by Pohjanmies, Tähti, Tack, Ayco J. M, Pulkkinen, Pertti, Elshibli, Sakina, Vakkari, Pekka, Roslin, Tomas

“…Host genetic diversity and genotypic identity have been reported to affect the abundance, species richness and species diversity of associated herbivore…”
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Effects of Tree Age and Bole Section on Pulpwood of Korean Spruce (Picea koraiensis Nakai) by Wang, Junhui, Zhang, Hongjie, Lei, Ming, Hu, Huiren, Pulkkinen, Pertti

“…Korean spruce (Picea koraiensis Nakai) is one of the most important wood resources for pulp and paper industry. However, a long production cycle is required…”
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Seeing the trees for the leaves - oaks as mosaics for a host-specific moth by Roslin, Tomas, Gripenberg, Sofia, Salminen, Juha-Pekka, Karonen, Maarit, B. O'Hara, Robert, Pihlaja, Kalevi, Pulkkinen, Pertti

“…From the perspective of a specialist herbivore, how homogenous are individual tree crowns as patches of habitat? We partitioned variation in physical and…”
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Isän genotyypin vaikutus yksivuotisen männyntaimen päätesilmun muodostumiseen ja talvenkestävyyden kehittymiseen by Markku Lehtinen, Pertti Pulkkinen

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Annual Variation in Pollen Contamination and Outcrossing in a Picea abies Seed Orchard by Pakkanen, Anne, Nikkanen, Teijo, Pulkkinen, Pertti

“…A mature Norway spruce [Picea abies (L.) Karst.] seed orchard, established in southern Finland with 67 clones from northern Finland, was analysed in three…”
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Host plant phenology, insect outbreaks and herbivore communities – The importance of timing by Ekholm, Adam, Tack, Ayco J. M., Pulkkinen, Pertti, Roslin, Tomas, Zytynska, Sharon

“…Climate change may alter the dynamics of outbreak species by changing the phenological synchrony between herbivores and their host plants. As host plant…”
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Effects of contaminated soil on the growth performance of young Salix (Salix schwerinii E. L. Wolf) and the potential for phytoremediation of heavy metals by Salam, Mir Md Abdus, Kaipiainen, Erik, Mohsin, Muhammad, Villa, Aki, Kuittinen, Suvi, Pulkkinen, Pertti, Pelkonen, Paavo, Mehtätalo, Lauri, Pappinen, Ari

“…Salix schwerinii was tested in a pot experiment to assess plant growth performance i.e., relative height and dry biomass and the potential for heavy metal…”
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Using long-term data to reveal the geographical variation in timing and quantity of pollen and seed production in silver and pubescent birch in Finland: Implications for gene flow, hybridization and responses to climate warming by Rousi, Matti, Possen, Boy J.M.H., Pulkkinen, Pertti, Mikola, Juha

“…•Gene flow and hybridization seem to play a minor role in the adaptation of birches.•Relative abundances of white birches in the North are not explained by…”
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Spatial patterns of microbial diversity and activity in an aged creosote-contaminated site by Mukherjee, Shinjini, Juottonen, Heli, Siivonen, Pauli, Lloret Quesada, Cosme, Tuomi, Pirjo, Pulkkinen, Pertti, Yrjälä, Kim

“…Restoration of polluted sites via in situ bioremediation relies heavily on the indigenous microbes and their activities. Spatial heterogeneity of microbial…”
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Influence of late autumn preconditioning temperature on frost hardiness of apple, blueberry and blackcurrant saplings by Wu, Dongxia, Kukkonen, Sanna, Luoranen, Jaana, Pulkkinen, Pertti, Heinonen, Jaakko, Pappinen, Ari, Repo, Tapani

“…•Preconditioning is important for assessing FHmax of apple, blueberry and blackcurrant.•FHmax was reached at precondition temperatures between −3 °C and −7…”
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