This research aims to assess contamination status of water and sediment in Sabalan dam reservoir (SDR) evaluate the impact withdrawal depths on carcinogenic non-carcinogenic risks metals for exposed people. Results metal pollution indices revealed some degree reservoir, especially associated with arsenic. Risk assessment SDR materials through different scenarios depth that consuming from 10 m c...

Phenological changes within a growth season were investigated in two grazed, seminatural grasslands in southern Sweden. On four occasions during the growth season, two independent observers recorded plant frequency and percentage cover. The vegetation data sets were analysed with ordination methods. The temporal changes were highly significant, but accounted for only a small part of the total v...

Fire and grazing, key determinants of structure and function of savanna grasslands worldwide, have been extensively altered by humans. We used existing long-term manipulations of fire and grazing in North American and South African mesic savanna grasslands, as well as new experiments, to determine whether the impacts of fire and grazing by large herbivores differed between these systems. We fou...

The effect of nitrogen deposition on the species richness of acid grasslands in Denmark: a comparison with a sudy performed on a European scale Journal Article How to cite: Damgaard, Christian; Jensen, Lennarth; Frohn, Lise Marie; Borchsenius, Finn; Nielsen, Knud Erik; Ejrnæs, Rasmus and Stevens, Carly J. (2011). The effect of nitrogen deposition on the species richness of acid grasslands in De...

A numerical model of the NW-Sabalan geothermal field was developed. The model covers a total area of 96 km and extends vertically from variable elevation of 2200-3600m a.s.l to 1,000m b.s.l. The model has 2,595 grid blocks in l4 horizontal layers. The boundary conditions and distributions of horizontal and vertical permeabilities were obtained by trialand-error matching of the initial temperatu...

The immediate need to understand the complex responses of grasslands to climate change, to ensure food supplies and to mitigate future climate change through carbon sequestration, necessitate a global, synthesized approach. Numerous manipulative experiments have altered temperature or precipitation, often in conjunction with other interacting factors such as grazing, to understand potential eff...

The Central Plains of Western Canada comprise the Prairies Ecozone and the Boreal Plains Ecozone. The former has the most grasslands and is divided into seven ecoregions: Mixed Grassland, Cypress Upland, Moist Mixed Grassland, and Fescue Grassland in southern Alberta and Saskatchewan; Aspen Parkland, which extends in an arc from central Alberta and Saskatchewan southeast to southwestern Manitob...