Essays about: "populationsutveckling"

Found 4 essays containing the word populationsutveckling.

  1. 1. Populationsförstärkande utplantering av martorn, Eryngium maritimum : miljöfaktorers inverkan på populationsutvecklingen hos unga, utplanterade bestånd i Västra Götalands län

    University essay from SLU/Dept. of Ecology

    Author : Clara Lerbro; [2022]
    Keywords : Bohuslän; Eryngium maritimum; martorn; populationsutveckling; restaurering; uppdrivning; utplantering; Västergötland; Västra Götaland;

    Abstract : Martorn (Eryngium maritimum) är en taggig, perenn ört som växer på sandiga havsstränder med god ljustillgång och är i Sverige en hotad art i kategorin ’sårbar’ (VU) på den nationella rödlistan. Bevarandearbete i form av uppdrivning och utplantering av plantor har genomförts av Länsstyrelsen i Västra Götaland sedan 2016. READ MORE

  3. 2. Förekomst av rådjur och dovhjort i förhållande till varandra : möjliga effekter av födokonkurrens

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Olof Skoglund; Axel Lomander; [2022]
    Keywords : dovhjort; rådjur; avskjutning; konkurrens; föda;

    Abstract : Competition in ecosystems can occur in different ways and it is especially important to understand the competition due to well-functioning game management in order to predict what will happen to the competitive situation if something change in the ecosystem. Competition between herbivores can limit certain ecosystem services or lead to a reduction in the biodiversity. READ MORE

  4. 3. Development of northern pike (Esox lucius) populations in the Baltic Sea, and potential effects of grey seal (Halichoerus grypus) predation

    University essay from SLU/Dept. Of Aquatic Resources

    Author : Rebecka Svensson; [2021]
    Keywords : diet analysis; ; marine mammals; predator-prey; socio-economic; sport fishing; recreational fisheries;

    Abstract : Worldwide, marine mammal populations are increasing after considerable efforts to turn the downward trends caused by hunting, accidental mortality and pollution. The ecosystem effects from the increases of these top predators may be pronounced, but are in most cases poorly known. READ MORE

  5. 4. Den öländska älgstammens förvaltning : en granskning av förvaltningsplanerna och jaktens upplägg

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Frida Jonsson; [2007]
    Keywords : Alces alces; älg; älgförvaltning; Öland; förvaltningsplan; älgjakt; populationsmodell; älghabitat;

    Abstract : To Swedes in general and, to hunters in particular, there is a great interest for moose (Alces alces), witch is Sweden's largest deer species. In the province of Öland (Sweden's second largest island) the local people show a great interest for the moose existence, both for consumptive (hunting) and non-consumptive use (tourism). READ MORE