Publications

temperature range shifts for three european tree species over the last 10,000 years.	we quantified the degree to which the relationship between the geographic distribution of three major european tree species, abies alba, fagus sylvatica and picea abies and january temperature (tjan) has remained stable over the past 10,000 years. we used an extended data-set of fossil pollen records over europe to reconstruct spatial variation in tjan values for each 1000-year time slice between 10,000 and 3000 years bp (before present). we evaluated the relationships between the occurrences of ...	2016	27826308
non-destructive phenotypic analysis of early stage tree seedling growth using an automated stereovision imaging method.	a plant phenotyping approach was applied to evaluate growth rate of containerized tree seedlings during the precultivation phase following seed germination. a simple and affordable stereo optical system was used to collect stereoscopic red-green-blue (rgb) images of seedlings at regular intervals of time. comparative analysis of these images by means of a newly developed software enabled us to calculate (a) the increments of seedlings height and (b) the percentage greenness of seedling leaves. c ...	2016	27840632
the great spruce bark beetle (dendroctonus micans kug.) (coleoptera: scolytidae) in lithuania: occurrence, phenology, morphology and communities of associated fungi.	we studied the occurrence, morphology and phenology of dendroctonus micans in lithuania and the fungi associated with the beetle at different developmental stages. the occurrence of d. micans was assessed in 19 seed orchards (at least 40 years old) of picea abies (l. karst.) situated in different parts of the country. bark beetle phenology was studied in two sites: a seed orchard of p. abies and a plantation of picea pungens (engelm.). d. micans morphology was assessed under the dissection micro ...	2016	27871337
phylogenetic and functional traits of ectomycorrhizal assemblages in top soil from different biogeographic regions and forest types.	ectomycorrhizal (em) fungal taxonomic, phylogenetic, and trait diversity (exploration types) were analyzed in beech and conifer forests along a north-to-south gradient in three biogeographic regions in germany. the taxonomic community structures of the ectomycorrhizal assemblages in top soil were influenced by stand density and forest type, by biogeographic environmental factors (soil physical properties, temperature, and precipitation), and by nitrogen forms (amino acids, ammonium, and nitrate) ...	2017	27885418
conifer green needle complex in patients with precancerous gastric lesions: an observational pilot study.	objectives. helicobacter pylori infection is common and can lead to precancerous gastric lesions. standard antibiotic therapy has a failure rate of more than 25% from antibiotic resistance. the primary aim of this observational pilot study was to test the feasibility of a large-scale clinical trial of conifer green needle complex (cgnc) to treat precancerous gastric lesions. secondary aims were to investigate h. pylori infection, stomach function, and histopathology of the gastric mucosa. method ...	2016	28003849
an evolutionary framework for carpel developmental control genes.	carpels are the female reproductive organs of flowering plants (angiosperms), enclose the ovules, and develop into fruits. the presence of carpels unites angiosperms, and they are suggested to be the most important autapomorphy of the angiosperms, e.g., they prevent inbreeding and allow efficient seed dispersal. many transcriptional regulators and coregulators essential for carpel development are encoded by diverse gene families and well characterized in arabidopsis thaliana. among these regulat ...	2017	28049761
distinct genecological patterns in seedlings of norway spruce and silver fir from a mountainous landscape.	understanding the genecology of forest trees is critical for gene conservation, for predicting the effects of climate change and climate change adaptation, and for successful reforestation. although common genecological patterns have emerged, species-specific details are also important. which species are most vulnerable to climate change? which are the most important adaptive traits and environmental drivers of natural selection? even though species have been classified as adaptive specialists v ...	2017	28052396
fine spatial scale variation of soil microbial communities under european beech and norway spruce.	the complex interactions between trees and soil microbes in forests as well as their inherent seasonal and spatial variations are poorly understood. in this study, we analyzed the effects of major european tree species (fagus sylvatica l. and picea abies (l.) karst) on soil bacterial and fungal communities. mineral soil samples were collected from different depths (0-10, 10-20 cm) and at different horizontal distances from beech or spruce trunks (0.5, 1.5, 2.5, 3.5 m) in early summer and autumn. ...	2016	28066384
tree diversity affects chlorophyll a fluorescence and other leaf traits of tree species in a boreal forest.	an assemblage of tree species with different crown properties creates heterogeneous environments at the canopy level. changes of functional leaf traits are expected, especially those related to light interception and photosynthesis. chlorophyll a fluorescence (chlf) properties in dark-adapted leaves, specific leaf area, leaf nitrogen content (n) and carbon isotope composition (δ13c) were measured on picea abies (l.) h.karst., pinus sylvestris l. and betula pendula roth. in monospecific and mixed ...	2017	28100710
long-term tree inventory data from mountain forest plots in france.	we present repeated tree measurement data from 63 permanent plots in mountain forests in france. plot elevations range from 800 (lower limit of the montane belt) to 1942 m above sea level (subalpine belt). forests mainly consist of pure or mixed stands dominated by european beech (fagus sylvatica), silver fir (abies alba), and norway spruce (picea abies), in association with various broadleaved species at low elevation and with arolla pine (pinus cembra) at high elevation. the plot network inclu ...	2017	28145102
epidihydropinidine, the main piperidine alkaloid compound of norway spruce (picea abies) shows promising antibacterial and anti-candida activity.	this study reports for the first time promising antibacterial and antifungal effects of epidihydropinidine, the major piperidine alkaloid in the needles and bark of norway spruce, picea abies (l.) karsten. epidihydropinidine was growth inhibitory against all bacterial and fungal strains used in our investigation, showing the lowest mic value of 5.37μg/ml against pseudomonas aeruginosa, enterococcus faecalis, candida glabrata and c. albicans. epidihydropinidine was nearly three times more active ...	2017	28163074
norwood: a gene expression resource for evo-devo studies of conifer wood development.	the secondary xylem of conifers is composed mainly of tracheids that differ anatomically and chemically from angiosperm xylem cells. there is currently no high-spatial-resolution data available profiling gene expression during wood formation for any coniferous species, which limits insight into tracheid development. rna-sequencing data from replicated, high-spatial-resolution section series throughout the cambial and woody tissues of picea abies were used to generate the norwood.congenie.org web ...	2017	28186632
two centuries of masting data for european beech and norway spruce across the european continent.	tree masting is one of the most intensively studied ecological processes. it affects nutrient fluxes of trees, regeneration dynamics in forests, animal population densities, and ultimately influences ecosystem services. despite a large volume of research focused on masting, its evolutionary ecology, spatial and temporal variability, and environmental drivers are still matter of debate. understanding the proximate and ultimate causes of masting at broad spatial and temporal scales will enable us ...	2017	28241388
aphid honeydew and its effect on the phyllosphere microflora of picea abies (l.) karst.	aphids of the genus cinara, feeding on norway spruce, excrete copious amounts of honeydew, a carbon-rich waste product, which accumulates locally on needles and twigs. we investigated the role of honeydew as a potential source of energy which might promote the growth of micro-organisms in the phyllosphere of conifer trees. to approach this question, we followed the population dynamics of cinara spp. in a natural forest stand over two seasons. we also studied the amounts of honeydew produced by i ...	1996	28307813
estimating photosynthetic rate and annual carbon gain in conifers from specific leaf weight and leaf biomass.	canopy photosynthesis is difficult to measure directly or to predict with complex models demanding knowledge of seasonal variation in environmental and physiological properties of the canopy. trees in particular offer a challenge with their large, aerodynamically rough and seasonally-changing canopy properties. in this paper we assess the possibility of using specific leaf weight to predict seasonal and annual net photosynthetic rate in deciduous (larix sp.) and evergreen (picea abies) conifers. ...	1986	28311656
cycles in voles and small game in relation to variations in plant production indices in northern sweden.	population dynamics for voles (cricetidae), tengmalm's owl (aegolius funereus (l.)), red fox (vulpes vulpes (l.)) willow grouse (lagopus lagopus (l.)), black grouse (lyrurus tetrix (l.)), capercaillie (tetrao urogallus l.), hazel hen (tetrastes bonasia (l.)), mountain hare (lepus timidus l.) and tularemia (francisella tularensis (mccoy & chapin)) and game bird recruitment were studied by index methods in northern sweden. in addition contemporary temperature records and spruce (picea abies (l.) k ...	1986	28311702
the influence of a fall fumigation with ozone on the stomatal behavior of spruce and fir.	clonal stock (grafts of 15-, 50-, and 100-year-old trees) of spruce (picea abies (l.) karst.) and fir (abies alba mill.) was exposed either to 150 ppb ozone (∼300 μgm(-3)) during 9 daylight hours or to carbon-filtered air on 35 days between 29 august and 21 october 1983. at the end of the fumigation the trees did not exhibit any visible signs of injury. transpiration and leaf conductance in light and darkness, measured with a licor porometer, revealed, however, stomatal sluggishness and - in spr ...	1984	28312352
cellulose nanofibers from softwood, hardwood, and tunicate: preparation-structure-film performance interrelation.	this work reveals the structural variations of cellulose nanofibers (cnf) prepared from different cellulose sources, including softwood (picea abies), hardwood (eucalyptus grandis × e. urophylla), and tunicate (ciona intestinalis), using different preparation processes and their correlations to the formation and performance of the films prepared from the cnf. here, the cnf are prepared from wood chemical pulps and tunicate isolated cellulose by an identical homogenization treatment subsequent to ...	2017	28350431