Sökning: "trophic control"

Visar resultat 1 - 5 av 15 uppsatser innehållade orden trophic control.

1. 1. TROFISK ÖVERFÖRING OCH TOXISKA EFFEKTER AV (NANO-)PARTIKLAR FRÅN ELEKTRONISKT AVFALL

   Kandidat-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskap; Göteborgs universitet / Institutionen för biologi och miljövetenskap

   Författare :Elvira Hagman; [2023-06-22]
   Nyckelord :;

   Sammanfattning : Today, nanoparticles (NPs) are being included in an increasing number of products, and with that comes the dispersion of NPs in the environment. However, the ecological impact of NPs remains largely unexplored, particularly in regards to real emissions with complex compositions of NPs and other pollutants. LÄS MER

3. 2. Werewolves to Are-wolves? Characterising key factors affecting public acceptance of a hypothetical Experimental Wolf Reintroduction in Scotland

   Master-uppsats, Lunds universitet/Internationella miljöinstitutet

   Författare :Marta Lamorgese; [2023]
   Nyckelord :Ecosystem Restoration; Rewilding; Large Predator Reintroduction; Wolf Reintroduction; Public Participation; Social Acceptance; Ex-ante Policy Evaluation; Local Stakeholders Engagement; Integrated Landscape Management; Attitude Formation; Social Sciences;

   Sammanfattning : The newest Scottish government Biodiversity Strategy prioritises control of overabundant deer populations. Ecological theory and real-life instances suggest an unorthodox deer management solution: wolf reintroduction (WR). Theoretically, wolves would prey on deer, thus alleviate grazing pressure on Scottish vegetation and help landscapes thrive. LÄS MER

4. 3. Behavioural Responses of Ungulates to Sound Systems : can simulated risk influence behaviour?

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

   Författare :Carolin Veronika Berndt; [2021]
   Nyckelord :ungulates; landscape of fear; behavioural response; predation risk; playback experiment; ABR; management strategies;

   Sammanfattning : Increasing ungulate densities all over Europe are intensifying the ongoing human-wildlife conflict, embodied by mainly economical losses through damages in forestry and agriculture. Given the current circumstances, farmers and forest owners prefer a decrease in ungulate numbers through direct population control, whereas other stakeholders, such as hunters, wildlife watchers or photographers, prefer higher wildlife numbers. LÄS MER

5. 4. Control of the soft brown scale, Coccus hesperidum L : in greenhouses of botanical gardens

   Kandidat-uppsats, SLU/Dept. Of Plant Biology

   Författare :Caroline Bayer Frøhling; [2020]
   Nyckelord :Coccus hesperidum; soft brown scale; plant protection; botanical garden; greenhouse; biological control;

   Sammanfattning : In this bachelor thesis, the control methods for the soft brown scale, Coccus hesperidum L. in greenhouses of botanical gardens, were discussed based on the knowledge gained from a questionnaire answered by gardeners from botanical gardens. C. hesperidum is a common pest in greenhouses. LÄS MER

7. 5. Importance of fish community structure, nutrients and browning for shallow lake ecosystem dynamics : A modelling perspective

   Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

   Författare :Ylva Karlberg; [2019]
   Nyckelord :biological modelling; bowning; food webs; trophic interactions; top-down and bottom-up control; nutrients; light; shallow lake; biologisk modellering; brunifiering; födovävar; trofiska interaktioner; näring; ljus; grund sjö;

   Sammanfattning : In a changing climate, it is increasingly important to be able to model environmental effects on food webs, and to do that, one must have appropriate dynamic models. I present a shallow lake ecosystem model where producers, grazers, carnivores, piscivores, and detritivores are coupled through resource (light, nutrients and detritus) fluxes between the benthic and pelagic habitats and through carnivore life history events (ontogenetic habitat and diet shifts). LÄS MER