47 uppsatser · sida 3 av 4
Effekter av jordbruk på akvatiskt tillflöde till land vid norrländska bäckar
… water to land is in form of emerged aquatic insects. Conversion of land from forest to agriculture can greatly affect aquatic ecosystems, and due to the close link, also affect the adjacent terrestral zone. Investigating how the presence of agriculture in the surrounding area …
… and trampling. This study focused on the effects of Gotland pony grazing on forest structure and diversity, and the impact on ground cover. To compare the fenced and grazed area with a reference area outside the enclosure a number of transects were used. The study showed that …
an evaluation using stable isotopes
… drivers of processes like productivity and nutrient cycling in boreal forests. Whilst those processes are linked to soil water content, relatively little is known about the sources of soil water for these forest components. During early autumn in boreal forests, temperature …
… ekosystemtjänster studerats i ett landskapsperspektiv, med Vilhelmina Model Forest (VMF) som studieområde. Den övergripande frågan i VMF är hur rennäring kan kombineras med andra markanvändningsintressen, huvudsakligen skogsbruk. Syftet med studien var att göra en kvantitativ …
… food for a fast growing population. The dominating farming system is agroforestry parklands. Agroforestry parklands can broadly be defined as areas where scattered trees occur on farmlands as a result of selective clearing. The presence of trees in crop fields may in the long …
en jämförelse mellan opåverkad och lågintensivt brukad mark
Lichens are adapted to bright and sparse forests on oligotrophic ground. Due to a slow growth rate and high light demand lichens will suffer from competition in eutrophic environments. Therefore, lichens have disappeared from managed forests where the forest industry has …
… are also disappearing due to man's destructive actions that devastates forests and pollutes oceans. How will the forests and the oceans sound like when the animal life disappears? What does that tell us about the health of the ecosystem? This Bachelor thesis project is about to …
… are also disappearing due to man's destructive actions that devastates forests and pollutes oceans. How will the forests and the oceans sound like when the animal life disappears? What does that tell us about the health of the ecosystem? This Bachelor thesis project is about to …
Möjlig interaktion och effekt på lokal biodiversitet
… was that high abundance of wild ungulates would inhibit the density of small forest rodents. The data was collected during field work within FoMA (Environmental Monitoring Assessment)/SLU (Swedish University of Agricultural Science). The Ungulate dropping inventory and rodent …
… mitigate climate. Internationally these environments are called ”blue carbon” ecosystems. In Sweden, alder (Alnus glutinosa and Alnus incanata) covered wetlands along the coast is a nature type that potentially could function as a ”blue carbon” habitat. Sediment samples were …
Analys av h?rnervmossans invasivitet p? ljunghedens vegetationstyper
… after strong reforms in modern agriculture in the last century, which led to forest succession of these cultural environments. Heathlands are one of the most threatened environmental types in Europe, of which 95 % are estimated to have disappeared from Sweden since the 1800?s …
en inventering av vägtrummor och skyddszoner kring dessa i Uppsala län och norra Västmanlands län
Interference in an ecosystem means a disturbance. When harvesting, forest roads have to be build to cope with heavy duty vehicles. Crossing brooks can not always be avoided. In this case bridges or culverts have to be built. There are many different kinds of culverts and …
… of the city of Gävle in central Sweden. The hills were located inconiferous forest stands. Samples of ants and material from different vertical layers in the anthills were collected. Soil near the ant hills and in a nearby arable field was collected as well.The 137Cs activity in …
… Suderbyn. The five selected themes were: An overview of permaculture, The forest garden, The pond, Composting and The use of human excrement and urine.
a tree under current domestication
Allanblackia is a tree genus native to humid forests in West, Central and East Africa. Its fruits contain large seeds from which edible high-quality fat can be extracted. In order to create a sustainable supply chain of Allanblackia seeds, a domestication program has been …
