Sökning: "herbivory"

Visar resultat 16 - 20 av 33 uppsatser innehållade ordet herbivory.

1. 16. Nutrient cycling by the herbivorous insect Chrysomela tremulae : Nutrient content in leaves and frass and measurements of ingestion, egestion and exuviation rates

   Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

   Författare :Sara Andersson; [2016]
   Nyckelord :Insect herbivory; nutrient cycling efficiencies; approximate digestibility; Chrysomela tremulae; increased C:N;

   Sammanfattning : Insect herbivory on forest canopies strongly affects ecosystem nutrient cycling and availability in a variety of ways, e.g. by changing the quantity, quality and timing of nutrient input to forest soils. LÄS MER

3. 17. The repulsive shrub : impact of an invasive shrub on habitat selection by African large herbivores

   Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

   Författare :David Rozen-Rechels; [2015]
   Nyckelord :invasive plants; large herbivores; savanna; habitat selection; clearing;

   Sammanfattning : Invasive plants, growing and spreading outside of their native range, can severely modify ecosystems. Herbivory has often been seen as a potential control of invasions, but has rarely been considered as a potential impacted trophic level. LÄS MER

4. 18. The Functional Importance of Herbivores : Tying the knot between fish biomass, parrotfish feeding and benthic structure on Kenyan coral reefs

   Master-uppsats, Stockholms universitet/Stockholm Resilience Centre

   Författare :Johanna Källén; [2014]
   Nyckelord :herbivore; coral reefs; ecosystem process; parrot fish; surgeonfish; Kenya;

   Sammanfattning : Herbivory is considered a key ecosystem process on coral reefs as it enhances reefs resilience by preventing shifts to macroalgal states. In trying to understand mechanisms and consequences of such shifts, research have taken on a variety of approaches, from the effect of declining habitat condition on (herbivorous) fish communities to the roles of specific herbivore functional groups and size classes therein. LÄS MER

5. 19. Effects of leaf beetle herbivory on pollination success and fruit development in woodland strawberry Fragaria vesca

   Master-uppsats, SLU/Dept. of Ecology

   Författare :Lisa Malm; [2013]
   Nyckelord :herbivory; pollination success; pollinator reference; fruit development; fruit yield; leaf beetles; Galerucella tenella; Galerucella sagittariae; Fragaria vesca;

   Sammanfattning : Cultivating well-developed and marketable garden strawberries (Fragria x ananassa) and woodland strawberries (Fragaria vesca) depends on successful pollination by insects. Organic garden strawberry plantations harbour higher pollinator densities and have been shown to produce bigger and better developed fruits than conventional farms. LÄS MER

7. 20. Mapping moth induced birch forest damage in northern Sweden, with MODIS satellite data

   Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Författare :Kristian Morin; [2013]
   Nyckelord :physical geography; topography; TIMESAT; Epirrita autumnata; geometrids; time series; MODIS; remote sensing; geography; birch forest; Earth and Environmental Sciences;

   Sammanfattning : Large synchronous outbreaks of herbivory geometrids is regularly occurring at 9-10 years intervals when they reach peak densities in the Fennoscandian birch forest, in the northern part of Scandinavia (Tenow 1972, Bylund 1995). Climate change is likely to increase the frequency, intensity and extent of the outbreak due to increasing temperatures in the area (Callaghan 2010, Heliasz et al. LÄS MER