Sökning: "herbivory"

Visar resultat 11 - 15 av 33 uppsatser innehållade ordet herbivory.

1. 11. Grazing increases albedo of savanna grasslands

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

   Författare :Linda Vedin; [2017]
   Nyckelord :albedo; grazing; savanna grassland; grazing lawn; shrub; Hluhluwe-iMfolozi;

   Sammanfattning : Earlier studies done in the north have shown that grazing increases surface albedo by reducing shrub height and abundance, and thus have the potential to cool down the local climate. But what about effect of grazing in other systems? In African savanna grasslands some grazers are able to transform grass swards into a lawn-like state by regular grazing. LÄS MER

3. 12. Shifts within the carbon cycle in response to the absence of keystone herbivore Ovibos moschatus in a high arctic mire

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

   Författare :Joel White; [2017]
   Nyckelord :vegetation; carbon; wetland.; methane; Arctic; Physical Geography Ecosystem Science; herbivory; Earth and Environmental Sciences;

   Sammanfattning : Tundra ecosystems are generally recognized as globally important carbon sinks, yet the knowledge on threats to such ecosystems is narrow. Climate change is predicted to reduce the number of muskox (Ovibos moschatus) in the arctic, it is therefore essential to understand the effect herbivores induce on the arctic ecosystem. LÄS MER

4. 13. A spatiotemporal analysis of coral reef regimes and fish herbivory across the Hawaiian Archipelago

   Master-uppsats, Stockholms universitet/Stockholm Resilience Centre

   Författare :Emmy Wassénius; [2017]
   Nyckelord :Coral reef; Herbivory; Regime Shift; Hawaii; Functional space;

   Sammanfattning : Coral reefs can undergo shifts to alternative ecological regimes (or states) when exposed to stress. Acquiring a deeper understanding of when coral reefs become increasingly vulnerable to such shifts (i.e. LÄS MER

5. 14. Utestängning av ren på Fulufjället : Hur vegetationen förändrats med respektive utan stora herbivorer i ett område med lågt betestryck

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

   Författare :Anton Karlsson; [2016]
   Nyckelord :herbivory; reindeer; Fulufjället;

   Sammanfattning : Reindeer is an important factor influencing species composition and functions in Arctic ecosystems. However, our understanding of how the importance of reindeer varies among ecosystems is still limited. LÄS MER

7. 15. Herbivore pressure of reindeer, rodents and invertebrates in the Fennoscandian tundra: a comparison of three methods.

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

   Författare :Malcolm Parsons; [2016]
   Nyckelord :International Tundra Experiment herbivory protocol; reindeer density; grazing pressure; Fennoscandian mountains;

   Sammanfattning : Estimating herbivore density is an important part of understanding their impact on vegetation.  Many studies have been carried out on the impact of reindeer and other herbivores on arctic and sub-arctic vegetation, but they are difficult to compare as they typically use different methods to estimate herbivore activities. LÄS MER