Sökning: "Simpson index"
Visar resultat 1 - 5 av 11 uppsatser innehållade orden Simpson index.
1. The Impact of Human Presence on Terrestrial Mammals in Secondary Regenerating Forest of the Peruvian Amazon
Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildningSammanfattning : Human disturbance is becoming an ever-bigger threat to biodiversity across the globe and should continue to be a field of conservation priority. Urbanisation, research and tourism put unavoidable pressure on the surrounding flora and fauna, therefore we need to gain knowledge on how to reduce future harm. LÄS MER
2. Ekologiska restaureringsåtgärders påverkan på unga trädplantor : bränning och luckhuggnings effekt på unga trädplantor
Kandidat-uppsats, SLU/Dept. of Forest Ecology and ManagementSammanfattning : Biodiversity is fundamental for a stable and functional ecosystem. However, studies have shown that biodiversity in Sweden is slowly declining due to modern forestry. This needs to be changed and ecological restoration can prevent further biodiversity loss. LÄS MER
3. The hot and cold cow : a stochastic production frontier analysis of the effect of temperature and income diversification in Swedish dairy farms.
Master-uppsats, SLU/Dept. of EconomicsSammanfattning : This thesis examines if Swedish dairy farms between 2005-2016, that diversify into unconventional income opportunities, can cushion a possible negative effect from increase in the mean temperature in Sweden. Dairy cows are sensitive to increases in temperature and could suffer from both heat and cold stress. LÄS MER
4. Hur påverkar fördelningen mellan jord- och skogsbruk i avrinningsområdet bottenfaunans diversitet och ekologisk status i södra Sveriges vattendrag?
Kandidat-uppsats, Linköpings universitet/BiologiSammanfattning : Förändring av markanvändning i avrinningsområdet påverkar vattendrags karaktärer som vattenkvalitet och biodiversitet. Inom EU och Sverige utvecklas åtgärdsprogram för att förbättra ekologisk status av påverkade vattendrag. Det finns fortfarande osäkerheter när det kommer till effekten som jord- och skogsbruk har på bottenfauna. LÄS MER
5. Nocturnal moths use of novel habitats : a case study on a power line in a forest-mire mosaic in boreal Sweden
Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental StudiesSammanfattning : Biodiversity and pollinators are declining all over the world, and a factor thought to cause this decline is destruction of natural habitats. One new way that has been discussed in an effort to try to mitigate the effects of declining habitats is to understand and use novel habitats, which are habitats created when, for example, building roads, railways, and power lines. LÄS MER