Sökning: "Ecological invasion"
Visar resultat 1 - 5 av 10 uppsatser innehållade orden Ecological invasion.
1. Sparvugglans (Glaucidium passerinum) invasioner vid Hammarö Fågelstation, Värmland
Kandidat-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)Sammanfattning : Sparvugglan (Glaucidium passerinum) är en invasionsfågel som uppvisar årliga fluktuationer i sina invasioner vid Hammarö Fågelstation. Invasioner av denna art utlöses vanligtvis av brist på föda tidigt under hösten, vilket kan orsaka att hundratals fåglar migrerar på ett oförutsägbart sätt. LÄS MER
2. Unearthing the social-ecological cascades of the fall armyworm invasion: A computer-assisted text analysis of digital news articles
Master-uppsats, Stockholms universitet/Stockholm Resilience CentreSammanfattning : Understanding the complex nature of social-ecological cascades, or chain reactions of events that lead to widespread change in a system, is crucial for navigating the challenges they present. Emerging pests and pathogens, such as the fall armyworm, provide an opportunity to study these cascades in greater detail. LÄS MER
3. Den svarthuvade snigelns (Krynickillus melanocephalus) substratpreferens vid äggläggning
Kandidat-uppsats, Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)Sammanfattning : Krynickillus melanocephalus was first seen in Sweden 2015. It is now labeled as an invasive species and it potentially poses a threat to the ecosystem, but the slug has not yet shown to have great negative impact in gardens and agricultural fields. There is limited ecological knowledge about the species. LÄS MER
4. KRIGETS EVOLUTIONÄRA PSYKOLOGI: psykologiska mekanismers närvaro när president Zelenskyjmotiverar till försvar av Ukraina
Kandidat-uppsats, Umeå universitet/Statsvetenskapliga institutionenSammanfattning : Evolutionary psychology often relies on experimental methods for testing theories due to their capacity to isolate independent variables, thereby enhancing internal validity. The scientific problem in this study, however, lies in the fact that an increase in internal validity in experiments might risk reducing ecological validity. LÄS MER
5. Resiliens enligt vem? : En kvalitativ studie i hur centrala aktörer inom totalförsvaret framställer begreppet resiliens
Master-uppsats, FörsvarshögskolanSammanfattning : In connection with the Russian invasion of Ukraine in 2014, the building of the Swedish total defence was brought to the fore. In its focus, the Swedish government has emphasized total defence should be resilient to external threats, but without defining the concept of resilience. LÄS MER