Sökning: "shade tree species"
Visar resultat 1 - 5 av 11 avhandlingar innehållade orden shade tree species.
1. The relationship between climate, disease and coffee yield: optimizing management for smallholder farmers
Sammanfattning : Climate change and diseases are threatening global crop production. Agroforestry systems, which are characterized by complex multispecies interactions, are considered to provide nature-based solutions for climate change mitigation and pest and disease regulation. LÄS MER
2. The impact of forest on pest damage, pollinators and pollination services in an Ethiopian agricultural landscape
Sammanfattning : The distribution of wild biodiversity in agroecosystems affect crop performance and yield in various ways. In this thesis I have studied the impact of wild biodiversity, in terms of trees and forest structures, on crop pests, pollinators and the pollination services provided in a heterogeneous landscape in southwestern Ethiopia. LÄS MER
3. Climate regulation provided by urban greening - examples from a high latitude city
Sammanfattning : Cities exert a strong influence on urban climate, and consequently on human health and wellbeing. This increases the importance of considering climate issues in urban planning, particularly in the context of global climate change. One of the key adaptation strategies in climate-sensitive planning is urban greenery. LÄS MER
4. Woody or treeless pastures? Effects of EU tree density limitations on biodiversity in woody pastures
Sammanfattning : The high biological and cultural values of traditionally managed rural landscapes are threatened by habitat change and degradation due to homogenisation through modern agricultural practices and abandonment. Woody pastures are important for many different taxa, and hence crucial for biodiversity conservation in these agricultural landscapes. LÄS MER
5. Plant Population Dynamics of Dodonaea angustifolia and Olea europaea ssp. cuspidata in Dry Afromontane Forests of Ethiopia
Sammanfattning : Human disturbance has led to excessive deforestation and to a very limited forest cover in the Afromontane zone of Ethiopia, which forms a large part of the country. Thus urgent conservation measures are required to ameliorate the situation. LÄS MER