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en studie på Korsnäs Skog och Bergvik Skog AB i västra Dalarna
… either through callipering or counting stems. Height, number of stems and tree species composition, and in callipered stands also mean diameter and standing volume, were registered. These control measured values were then compared to the interpreted, or from interpreted values …
… such as fertilization are called semi-natural grasslands. These rare and species-rich areas hold an ecological, biological and historical value and if the management stops these areas will likely diminish. More effective agricultural systems and a declining number of grazing …
en fältstudie över föryngring, trädslagsfördelning och död ved 14 år efter åtgärd
… from the restored areas showed that stands were dominated by mixed tree species (37%) and that Norway spruce (23%), mostly was of the smallest diameters. Sapling species composition differed from the trees by means of a lower content of Norway spruce; only six percent. Almost …
en metod för tillämpning i ett kontinuitetsskogsbruk?
… methods that create stands with uneven aged structures, a variety of tree species and a continues tree cover, there is potential to increase the biodiversity and the value for recreation (Emborg m.fl. 2000, Berg m.fl. 1995, Mattsson & Li 1994, Holgen m.fl. 2000). However it is …
… of tortricid populations can be expected. In order to get a picture of species composition and population densities among the tortricids, an inventory of seven species, Adoxophyes orana, Archips podana, Archips rosana, Cydia pomonella, Hedya nubiferana, Pandemis heparana and …
biomass production, fallow deer preference and species diversity
… dama) were used to estimate biomass consumption and preference. To estimate species diversity I used pitfall traps, beating nets and transects to collect arthropods. The seasonal biomass production without grazing showed that crop mix B, C, D, F produced better than A and E …
a targeted search for novel natural antibiotics
… the most prolific producer of natural products, but lately, non-Streptomyces species have been on the rise in novel drug research. Mainly terrestrial species have been studied, but the marine environment offer just as much, if not more, biodiversity to mine for new natural …
… fence. Occupation rate was estimated as the amount of individuals of each species that was caught on a picture compared to the total amount of pictures the camera could take per day. Browsing pressure is here defined as the percentage browsed plants (fresh bites) per plot and …
… composition on these fields was made, to look into how the composition of the species in different ages of the pasture varies. The work was partial telephone-interviews with the farmers that are hosts of the evaluation of prognoses for harvest time in leys in northern Sweden …
en bakgrundsstudie samt simulering av inventeringsmetoders inverkan på noggrannhet i leveransprognoser till sågverk
… e the forecasts and their standard errors, are presented separately for tree species, log type and diameter class. In many Swedish sawmill campanies of today, there is a trend in productian philosophies towards a greater adaption to customer demands. As a component in this …
… selective cutting, regeneration with shelterwood and stands with mixed tree species composition. The results from the analysis of the local forestry boards data shows that all tree-species apart from spruce occurs relatively more often in PF-stands than average. The interviews …
… suggestion is a spruce dominated and traditional regeneration alternative. The species composition will be similar to the one before the storm except for the proportion of pine that will be lower. The second alternative is less traditional and based on other values like …
… the composition of the lichen flora between different stands, between the tree species or between heights. Stands of the age span of 20-60 years had very few lichen occurrences and a low number of species found compared to the other age classes.
… more catchment oriented perspective in favour to support viable populations of species like the freshwater pearl mussel and brown trout. In the work with the catchment of Håltjärnsbäcken has purpose, except to describe the watershed and the potential that exist for the …
Epifytiska lavar utgör en viktig del av floran i den boreala zonen. Några miljövariabler är kända för att styra artrikedomen och artsammansättningen av epifytiska lavar på beståndsnivå, såsom träddiversitet, beståndsålder, fuktighet och trädens barkstruktur. Skogsbränder utgör …
