Essays about: "aphid abundance"

Found 2 essays containing the words aphid abundance.

1. 1. Intercropping oats with annual clovers : effects on yields and aspects of biodiversity

   University essay from SLU/Dept. of Ecology

   Author : Anna Douhan Sundahl; [2021]
   Keywords : intercropping; cover cropping; pollinators; natural predators; weeds; clover; oats;

   Abstract : The use of fertilizers, pesticides and herbicides has contributed to greatly increase the crop yields per hectare. Humanity has become reliant on artificial inputs overshadowing usage of resources from ecosystem services that we continue to weaken further, by using agricultural practises decreasing landscape and species diversity. READ MORE

3. 2. Extended phenotypes in the canopies of Norway spruce

   University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

   Author : Christofer Johansson; [2016]
   Keywords : extended phenotypes; Cinara spp.; Picea abies; associated organisms; C:N ratio; growth rate; aphid abundance;

   Abstract : The extended phenotype may help us understand how genetically determined trait variation in foundation species can influence associated organisms. Today, there is no existing demonstration of how genetically determined trait variation in Norway spruce (Picea abies) may affect associated organisms in tree canopies. READ MORE