Marzena Niemczyk

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• PhD
• Professor (Associate) at Forest Research Institute

Background: Climate change is leading to severe and long-term droughts in European forest ecosystems. can have profound effects on various physiological processes, including photosynthesis, gene expression patterns, and nutrient uptake at the developmental stage of young trees. Objectives: Our study aimed to test the hypothesis that the application...

Understanding species-specific adaptations to climate change, which exacerbates drought stress and heat waves, is crucial for sustainable forests. This knowledge can help in selecting potential alternatives for species such as Norway spruce (PIAB), which faces significant dieback in Central European forests. In this study, we focused on the adaptiv...

Cockchafers Melolontha spp. are polyphagous root pests and outbreak species of considerable economic importance to forestry in Europe. Knowledge of genetic diversity within and between cockchafer populations is largely unexplored but could lead to more effective monitoring and management strategies of these pests. In this study, we fill several gap...

Key message Picea abies and Pinus sylvestris seedlings conserve soil water and are more sensitive to drought showing photoinhibition even under moderate stress, while Quercus robur and Fagus sylvatica seedlings have higher soil water uptake, they show photoinhibition only under severe drought. Abstract Drought is an important factor in ecological...

Cockchafers Melolontha spp. are polyphagous root pests and outbreak species of considerable economic importance to forestry in Europe. However, knowledge about genetic diversity among and between populations of cockchafers is far from sufficient. In this study, we fill several gaps in the knowledge of genetic population structure and the intensity...

Rapid screening methods for drought-resistant genotypes are urgently needed in tree improvement programs in the face of current climate change. We used a plant tissue culture technique to assess the phenotypic response of three highly productive genotypes of Robinia pseudoacacia to water deficit induced by mannitol and sucrose in a range of water p...

Phenotypic plasticity, in response to adverse conditions, determines plant productivity and survival. The aim of this study was to test if two highly productive Populus genotypes, characterised by different in vitro etiolation patterns, differ also in their responses to hormones gibberellin (GA) and abscisic acid (ABA), and to a GA biosynthesis inh...

Phenotypic plasticity in response to adverse conditions determines plant productivity and survival. The aim of this study was to test if two highly productive Populus genotypes, characterized by different in vitro etiolation patterns, differ also in their responses to hormones gibberellin (GA) and abscisic acid (ABA), and to a GA biosynthesis inhib...

The contribution of Douglas-fir (Df) to European forests is likely to increase as the species is a potential adaptation option to climate change. In this study, we investigated growth and survival of Df seed sources to fill a knowledge gap regarding recommendations for the future use of Df provenances in Poland. Our experimental test site represent...

Georgian forests are very valuable natural resources, but due to the lack of affordable alternatives to firewood, people are forced to use forest resources illegally and unsustainably. The aim of this study was to determine the productivity and biomass properties of four poplar clones from Aigeiros and Tacamahaca and one control clone, considering...

Poplars (Populus spp.) managed in short rotation woody crop (SRWC) systems are considered very promising in terms of biomass production for energy purposes in a temperate zone. In this study, several gaps in knowledge regarding the selection of the plant material, cultivar‐specific responses to coppicing, and rotation length, are addressed. Five‐ a...

Key message New genotypes of hybrid poplars from the Aigeiros and Tacamahaca sections have great potential for increasing genetic gain from selection. The most promising traits are associated with productivity and resistance to Sphaerulina musiva -induced canker while wood density can be selected for secondarily. A minimum age of 8 years is reliabl...

The data was collected from a common garden genetics trial established in 2008 in northern Alberta, Canada. The trial represents 1978 (initial number) hybrid poplar clones from 63 families and includes interspecific crosses between Populus deltoides (D), Populus nigra (N), Populus balsamifera (B), P. maximowiczii (M), and P. × petrowskyana (P. laur...

The analyzes of cellulosic fibers and properties of cellulosic pulps are extremely important in the process of paper production. If the set point is known, we can predict fairly accurately the effects of fiber dimensions and pulp properties on the final product, which would consequently help in the precise selection of fibrous raw material types su...

Deployment of well-adapted, water use efficient, and productive genotypes may be essential for the sustainability of both forests and wood supply for the forest industry, as climate change is increasing water stress around the world. This study aimed to characterize key traits among new genotypes of hybrid poplars (Populus spp.) in water use effici...

Research Highlights: This research provides a firm basis for understanding the improved aspen hybrid performance that aims at facilitating optimal clone selection for industrial application. Background and Objectives: Rapid growth and wood properties make aspen (Populus tremula L.) suitable for the production of pulp and paper. We assessed the pote...

We investigated the occurrence and pathogenicity of Beauveria spp. (Hypocreales: Cordycipitaceae) in forest soils in Poland, in outbreak areas of cockchafers (Coleoptera: Scarabaeidae): Melolontha melolontha L. and M. hippocastani F. We also examined the occurrence of Beauveria in relation to soil pH. Beauveria spp. isolates were characterised at s...

Tereba, A. & Niemczyk, M. 2018: A quick PCR-based method for identification of Melolontha melolontha and Melolontha hippocastani (Coleoptera: Scarabae-idae). — Entomol. Fennica 29: 141–145. The common cockchafer (Melolontha melolontha) and the forest cockchafer (Melolontha hippocastani) are among the most destructive insect pests in many European c...

This study aimed to determine the productivity and energy values of 10 poplar cultivars for use as potential fuel sources in Poland. The study was conducted over a seven-year cycle in northern Poland. The cultivars belonged to clones traditionally used for timber production, as well as new clones specific to short-rotation coppice (SRC) practices....

Cockchafers of the genus Melolontha (Coleoptera, Scarabaeidae) seem to have a strong effect on forest management by inducing significant losses in the forest stands. Monitoring of the occurrence of Melolontha is carried out in many European countries, and the detailed data are available. But there is still a lack of data of the genetic population s...

Taxus baccata is a rare species throughout its entire natural range and is often categorized as nationally threatened in countries where it occurs. In Poland yew is under protection and almost all sites with yew occurrences are subject to reserve protection. The aim of the study was to answer the following questions: What is the tree diameter struc...

Cockchafers (Melolontha melolontha and Melolontha hippocastani) are some of the most damaging forest insect pests in Europe. This study evaluated environmental factors that influence the occurrence of cockchafer grubs in forests, including location of the stand relative to open space, the stage of stand development, tree species composition, canopy...

Niemczyk M., Bruchwald A. 2017. Wzory do określania pierśnicowej liczby kształtu mieszańców selekcyj− nych topoli. Sylwan 161 (5): 413−421. Knowledge of diameter at the breast height (DBH), tree height and form factor allows to estimate tree volume, which is one of the most important measures in forestry. The paper presents empirical equations for...

Knowledge of diameter at the breast height (DBH), tree height and form factor allows to estimate tree volume, which is one of the most important measures in forestry. The paper presents empirical equations for the determination of DBH form factor of different species and hybrids of Populus sp. The study was set up on short-rotation plantation in Wi...

Background Renewable energy sources such as biomass are an important aspect of the energy policy of the European Union. As the use of ‘full-value wood’ for energy purposes has been restricted, short-rotation forestry may be an alternative source of woody biomass. In Poland, the most promising genus is poplar (Populus spp.). Methods Ten poplar culti...

ukaszewicz J., Niemczyk M., Wrzesiński P. 2016. Kształtowanie się przyrostu grubości jodeł z Gór Świętokrzyskich. Sylwan 160 (11): 893−904. The paper presents the dendrochronological analysis of silver firs (Abies alba Mill.) growing in the canopy layer of the forest stands. We searched for the similarities in the rhythm of radial growth of studied...

Chrabąszcze (M. melolontha i M. hippocastani) są jednymi z najgroźniejszych szkodników korzeni. Insektycydy stosowane do niedawna przeciwko pędrakom chrabąszczy zostały wycofane z użytku, dlatego istotne jest poszukiwanie innych metod ograniczania liczebności chrabąszczy opartych na znajomości ekologii owada, warunków w jakich występuje i poszukiwa...

In Poland, the majority of silver fir stands is characterised by a single-layer stand structure. The current silvicultural activities aim at obtaining multilayer stands, which requires a clearer definition of the structure, and more precisely, a better knowledge of the pattern of diameters at breast height (DBH) distribution. The aim of the researc...

The use of biomass for energy purposes is an important European Union policy. In light of the restrictions concerning the use of the full-value wood from forests for energy purposes, short rotation forestry can become an alternative source of woody biomass. In this context, the most promising species is poplar (Populus spp.), productivity of which...

Silver fir is one of the main tree species of mountain and foothill forests in Poland that in optimal conditions forms pure stands with multi−layer structure. The study objective is to present differences in height and diameter growth rates of firs growing in upper stand layers and in the undergrowth. The research was conducted in 12 fir stands loc...

Assuming multilayer structure as optimal for silver fir stands, we attempted to answer the fol− lowing questions: 1) how to describe such structure, 2) to what extent does the structure of a particular stand differ from the optimal one, and 3) how to obtain the optimal structure. The study was based on the material collected in 12 stands in the Naw...

This study evaluated the environmental risk drivers affecting the occurrence of cockchafer grubs in mature stands bordering with open spaces. The following factors were taken into the consideration: the distance from the edge towards the forest interior, the forest site type, species composition, canopy openness and the cover of forest floor with v...

The aim of this study was to evaluate the development of common yew, Taxus baccata L., with respect to canopy openness. The plants were growing in ex-situ conservation plantations (established in 2008) in the understory of different tree species. Eleven forest plantations belonging to the following five forest districts were inventoried: Rokita, Ba...

The paper compares the proportion of damaged stands managed under group cutting system (group clear cutting and group shelterwood cutting) with the analogous stands where cuts had not been performed. The empirical material came from the database of the State Forests Information System and covered all forest districts located in Polish lowlands. To...

Yew Taxus baccata L. is an endangered tree species in parts of Europe. In Poland small populations grow in forest reserves. The study was conducted in two reserves established particularly for the protection of yew populations located in the regon of Pomerania. The aim of the study was to know the number, vitality and growth conditions of natural y...

The aim of this study was to assess the variation of bud development time of the Polish and Latvian silver birch provenances and its impact on tree growth in the juvenile phase. The assessment of bud development was carried out in 2008 and 2009 on three experimental plots with ten Polish and three Latvian provenances using a six−point scale. Browsk...

Chlorophyll fluorescence was measured in the needles of three-year-old fir clones using the saturation pulse method. The genetic material used in the research was collected from fir clone of autochthonous populations in the Karkonosze National Park. The fir clones were grown in three genetic archives located at different elevations (in the Przełęcz...