Sökning: "Åse Ohlsson"

Hittade 2 uppsatser innehållade orden Åse Ohlsson.

1. 1. Is bishop's goutweed (Aegopodium podagraria L.) sensitive to mechanical disturbances?

   Magister-uppsats, Institutionen för livsvetenskaper

   Författare :Åse Ohlsson; [2008]
   Nyckelord :Plant herbivory interaction; plant ecology; weed control;

   Sammanfattning : In this study I investigate the sensitiveness of Bishop's goutweed (Aegopodium podagraria L.)to mechanical damages in an experiment with artificial clipping. Based on personalobservations of A. podagraria during several years I hypothesise that i) A. LÄS MER

3. 2. Do plants change their defence strategy from a structural defence to a chemical one as a response to heavier herbivory?

   Kandidat-uppsats, Institutionen för livsvetenskaper

   Författare :Åse Ohlsson; [2005]
   Nyckelord :Betespåverkan; botanik; försvarsmekanismer;

   Sammanfattning : To the main part, this paper is the result of a literature survey and to the minor part of a field survey. The study is found on the question of, if and why unpalatable plant species invade heavily grassed rangelands and if plants change their defence strategy from a mechanical defence to a chemical defence if the herbivory pressure increase. LÄS MER