Sökning: "biologisk mångfald"
Visar resultat 1 - 5 av 47 avhandlingar innehållade orden biologisk mångfald.
1. Rättsligt skydd av biologisk mångfald : etiska perspektiv och normkonflikter
Sammanfattning : En förutsättning för att vi ska uppnå en hållbar utveckling är att vi bevarar den biologiska mångfalden, vilken bland annat hotas av införsel och spridning av invasiva främmande arter. Ett viktigt instrument för att skydda den biologiska mångfalden utgörs av de rättsliga ramar som satts upp på internationell, EU- och nationell nivå. LÄS MER
2. Breaking the ice : effects of ice formation and winter floods on vegetation along streams
Sammanfattning : Streams in cold regions are characterized by unique hydrological processes that control flow regime and water levels. One of the most important processes is the formation, growth and melting of different types of ice in and around the stream channel during winter. LÄS MER
3. Skogen som livsmiljö : En rättsvetenskaplig studie om skyddet för biologisk mångfald
Sammanfattning : Globally, species are being eradicated at an accelerated rate, up to 1000 times faster than the rate of natural species loss. This is primarily due to the reduction and degradation of species habitats. As biodiversity decreases, ecosystems risk losing significant ecological processes and functions, such as natural water purification. LÄS MER
4. Gastrotricha of Sweden - Biodiversity and Phylogeny
Sammanfattning : Gastrotricha are small aquatic invertebrates with approximately 770 known species. The group has a cosmopolitan distribution and is currently classified into two orders, Chaetonotida and Macrodasyida. The gastrotrich fauna of Sweden is poorly known: a couple of years ago only 29 species had been reported. LÄS MER
5. Biologisk mångfald i läroböcker i biologi
Sammanfattning : The aim of this thesis is to analyse offered meaning, that is, what and how subject content is communicated to the recipients. In this case the subject content is biological diversity and the communicative artefacts are biology books for the latter grades in the Swedish compulsory school. LÄS MER
