63 uppsatser · sida 2 av 5
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… for achieving a multilayered structure where found to be a combination of both species mixture and management. A species mixture with oak and not to many other tree species together with some middle layer species and the low growing shade tolerant bush species like Alpine …
ett gestalningsförslag
… The third zone will be the most mixed one with an even distribution among the species and will border to a small meadow that slopes towards the lake. Generally the three zones have a fast growing canopy to fast get the ”forest feeling”. The ”noble” broadleaves will grow into the …
… as an important landscape engineer affecting the environment for many species. The local office of Sveaskog in Skinnskatteberg is responsible for the management of large areas of the forests in the County of Västmanland. In this area one of several company’s goals are to create …
The moose is a keystone species in the boreal forest ecosystem, but the dense Swedish population do cause some serious problems. From a forestry perspective, their browsing on young Scot pine (Pinus sylvestris) causes extensive losses of revenue. Adjusting the cleaning along …
… changes in the distribution of filamentous algae as well as the general species composition of macroalgae and diatoms in Swedish eelgrass meadows. I have also studied the possibility of tracking these algae and diatoms in eelgrass meadows using eDNA methodology. The focus has …
en analys av användbarheten med fjärranalys som hjälpmedel till röjningsrådgivning
… in the wavelengthts for red light and near infrared light (NIR). Decidious species gives the highest difference and is therefore the species located with the best accuracy. A field inventory of all located objects was not possible because of the time limits of this project …
a case study of stem and species distribution in Sabah, Malaysia
… family Dipterocarpeaceae (dipterocarps). Compositions in terms of families, species, dipterocarps and number of stems were compared between rehabilitated and non- rehabilitated areas using paired plots and ANOVA. On rehabilitated areas enrichment methods of line and gap-cluster …
En identifiering av habitatkaraktärer viktiga för diversitet och abundans av grodor i tropisk regnskog
… Borneo; i.e. examine whether any gradients could be demonstrated in terms of species composition, diversity and density of frogs, as well as which environmental characteristics that seem to be of most importance in forming habitats of high conservational value. A major river …
a possibility to reduce nutrient levels and produce commercially interesting metabolites
… reduction and use the biomass for energy or animal feed since many alga species has a good nutritional value. Approximately 800-1000 m3 water is applied per 1000 m2 of greenhouse area during one season in a tomato production. Out of this is about 20-25% drained off and become …
… study was to investigate how elevated levels of heavy metals affect the faunal species composition, abundance and species-diversity. The bentic macroinvertebrate fauna in the highly polluted lake Tisken was compared with the bentic macroinvertebrate fauna in the unpolluted lake …
en jämförelse av habitatkvaliteter för vedlevande lavar och mossor
… fractions make up 20 % of the dead wood volume in woodland key habitats. Few species observations were made, which can probably be explained by the fact that many of the studied species are rare, and the investigated area is quite small. Only two species could be analyzed …
En fältstudie i Laholms jordbrukslandskap
Many species of amphibians are threatened both in Sweden and globally. The causes are many and a main factor is habitat alterations which often results in populations being isolated. Changes in the agricultural landscape have among other things resulted in small water bodies …
The Angola black-and-white colobus (Colobus angolensis palliatus) is a subspecies of Colobus angolensis inhabiting fragmented forests in coastal Kenya and Tanzania. C. angolensis is regarded as Least Concern in the red list of IUCN because its populations are abundant. However …
… variables such as average stand height, volume density, stand volume, and tree species composition in order to identify stands which can be of current interest for thinning. The study also includes how the aerial photo material and experience of the interpreter can influence the …
… In addition rank-abundance curves and checklists were used to get a picture of species composition. The only index that showed a difference between areas was the Berger-Parker diversity index showing that the downstream reference stretch differed from the other two. None of the …
