Sökning: "chronosequence"
Visar resultat 1 - 5 av 11 uppsatser innehållade ordet chronosequence.
1. Effect of stand age on soil respiration in managed vs unmanaged Scots pine stands
Master-uppsats, SLU/Dept. of Forest Ecology and ManagementSammanfattning : How the forests in Sweden and around the world have been, and are still today, managed is a hot debate. The rotation forestry that is commonly used in Sweden has been the focus of debate regarding whether it is a sustainable management method, and whether it should be changed. LÄS MER
2. The potential nitrous oxide emissions in a permanent grassland chronosequence
Kandidat-uppsats, SLU/Dept. of Forest Mycology and Plant PathologySammanfattning : As a part of a larger project (Belowground biodiversity of grasslands – conservation needs and potential to promote sustainable agriculture), this study aims to investigate potential nitrous oxide (N2O) emissions and microbial gene abundances needed for the production (nirS and nirK) and reduction (nosZI and nosZII) of nitrous oxide in soil of permanent grasslands of various age. Thegrasslands have at different times been converted to permanent grasslands and are of interest because of the possibility to shed more light about the passage of time’s affects on the soil microbialcommunities and their activity. LÄS MER
3. Dependence of Total Mercury in Superficial Peat With Nutrient Status: Implications for Stability of Peat as an Archive of Hg Deposition
Master-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : .... LÄS MER
4. Above- and belowground carbon stocks and effects of enrichment planting in a tropical secondary lowland dipterocarp rainforest
Master-uppsats, SLU/Dept. of Forest Ecology and ManagementSammanfattning : The intact tropical rainforests are rapidly being degraded and subsequently converted to other land uses, with associated greenhouse gas emissions and loss of biodiversity. It is imperative that the effects of such conversions and large-scale restoration efforts on forest structure and ecosystem services are understood to effectively be able to counteract the negative consequences of deforestation and forest degradation. LÄS MER
5. Effects of climate warming on the performance of three boreal tree seedling species in interaction with moss cover and fire history
Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : Forest regeneration in the form of successful seedling establishment is a key factor for the persistence of a healthy forest ecosystem. Tree seedlings grow in a complex environment shaped by over- and understory and competition for light, nutrients and water. LÄS MER
