Sökning: "bestånd"
Visar resultat 1 - 5 av 32 avhandlingar innehållade ordet bestånd.
1. Ståndortsegenskaperna som bonitetsindikatorer i bestånd med tall och gran
Sammanfattning : .... LÄS MER
2. Fishing the gene pool : Genetic structure, admixture and behavioural complexity in fisheries management
Sammanfattning : Prudent management of marine fish resources relies on separation and management of biologically meaningful groups of conspecifics, termed fishery stocks, often depicted as self-sustaining, spatiotemporally separated and demographically independent entities. Such stock discrimination has however proven challenging. LÄS MER
3. Population biology and conservation of beetles and pseudoscorpions associated with hollow oaks
Sammanfattning : Many species associated with old trees are threatened, as this habitat has decreased severely in Europe during the last 200 years. In old oaks, hollows with wood mould often form in the trunks and these harbour a specialized fauna mainly consisting of beetles, flies and pseudoscorpions. LÄS MER
4. Increased resilience in managed boreal forests : Controlling damage by spruce bark beetle and moose in Sweden
Sammanfattning : Most of the forests growing in Europe today have been planted, or heavily affected, by humans. This is because the forest industry provides crucial raw materials for diverse products, including timber, pulp and paper, cellulose-based substances and renewable energy sources. LÄS MER
5. Regeneration measures in time and space : Site preparation, planting and digital tools
Sammanfattning : Regeneration success depends on decisions made based on factors on aregional, site, and microenvironmental level. Therefore, understanding andmapping of such factors between and within sites can guide decisions forbetter seedling establishment. LÄS MER