Sökning: "amphibian"
Visar resultat 1 - 5 av 26 uppsatser innehållade ordet amphibian.
1. Headfirst into shallow water - Wetland restoration and its contribution to the Habitats Directive
Master-uppsats, Uppsala universitet/Växtekologi och evolution; Uppsala universitet/Institutionen för biologisk grundutbildningSammanfattning : Located in the borderland between aquatic and terrestrial environments, the wetlands cover a wide spectrum of habitats and enable living standards for a great variety of organisms. Although important habitats, a great extent of the original wetlands have disappeared in Europe and Sweden due to anthropogenic disturbances. LÄS MER
2. Föroreningar i akvatiska ekosystem
Kandidat-uppsats, Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)Sammanfattning : This literature study aims to investigate prior knowledge of the effects of heavy metals on amphibians in freshwater environments. The methodological approach for the study is based on extensive searches in the database called Web of Science. LÄS MER
3. Groddjursåtgärden vid Lillbyasjön i Östhammars kommun : ett hjälpmedel eller ett hinder?
Kandidat-uppsats, SLU/Dept. of Urban and Rural DevelopmentSammanfattning : Groddjuren hotas av utrotning och minskar snabbt i populationsstorlek. Trafiken är en faktor som kan ge additiv dödlighet till populationer som behöver korsa en väg vid migrationen mellan övervintringsplatserna och lekvattnen. LÄS MER
4. How does temperature affect the severity of Bd infection in the common toad (Bufo bufo)? : A test of thermal mismatch hypothesis
Kandidat-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildningSammanfattning : Batrachochytrium dendrobatidis (Bd) is a fungus that causes chytridiomycosis in amphibians. This fungus is an invasive species that has spread all over the world and is causing mass deaths in many areas. Bd has an efficient life cycle which targets suitable hosts and causes disturbances in amphibian osmoregulation and eventually death. LÄS MER
5. Go with the flow - can environmental flows save us? : A study of the flow patterns in Bredforsen and possibilities for the future
Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : Freshwater systems have, during human history, endured large-scale impacts. According to the water framework directive, measures must be developed to create a better environment for species in, and connected to, freshwater systems. Hydropower plants has caused loss of natural disturbance (e.g. LÄS MER