Sökning: "early land plants"
Visar resultat 1 - 5 av 28 avhandlingar innehållade orden early land plants.
1. Early land plant spores from the Paleozoic of Sweden – taxonomy, stratigraphy and paleoenvironments
Sammanfattning : The Silurian through earliest Devonian, between ca 444 and 412 million years ago, was characterized by significant changes in global climate and environment. At that time, plants and animals had begun to expand the colonization of previous relatively desolate terrestrial landscape. LÄS MER
2. Distribution patterns of fleshy-fruited woody plants at local and regional scales
Sammanfattning : Fleshy-fruited woody plants share a long history with humans, providing us with food and wood material. Because of this relation, we have actively moved some of these plants across landscapes and continents. LÄS MER
3. Jord, linne eller träkol? : Genusordning och hushållsstrategier, Bjuråker 1750-1850
Sammanfattning : The aim of this study is to elucidate how people in a household-based pre-industrial agrarian economy acted during a period of great changes. The household is seen as a meaning-creating sym-bol in the local culture. LÄS MER
4. Disturbance regimes in dry sandy grasslands – past, present and future
Sammanfattning : A number of sandy grassland habitats of interest for biodiversity conservation can be found in Europe. One such habitat is the threatened xeric sand calcareous grassland, which is home to a large number of endangered species. LÄS MER
5. Plant community assembly during succession from arable fields to semi-natural grassland
Sammanfattning : Large areas of grazed, species rich semi-natural grassland were lost in Europe during the last two centuries and as a consequence led to decreases in grassland specialist species. Therefore, today the “restoration” of grassland on previously arable fields is recommended for the protection of grassland specialists. LÄS MER