In past decades, ecological services and functions of alpine grassland in the Three-River Headwater Region (TRHR), Qinghai-Tibetan Plateau, have been severely degraded due to overgrazing and overuse of yak dung as a fuel. Therefore, the eco-migration project has been implemented by the national government for improving eco-environmental quality in this region. This paper examines the carbon cyc...

plankton and semi-plankton samples collected from twelve floodplain lakes (beels) of majuli river island of the brahmaputra river basin, upper assam reveal rich cladocera assemblage of 48 species belonging to 32 genera and 7 families. this report assumes biodiversity value as ~65.0% and ~37.0% of the species, and ~78.0% and ~72.0 of genera of the taxon known from assam state of northeast india ...

This study was conducted to elucidate microbiological characteristics of river water and groundwater communities in order to improve our conceptual and predictive understanding of river and groundwater ecosystem processes, functioning and management. Rouge River bacterial communities from shallow groundwater and river water were screened using Biolog Ecoplates, which test for oxidation of selec...

While ecosystem services provide benefits at various spatial scales, often the decision to conserve an ecosystem lies with the local people. Knowing the perceptions of local landowners of the benefits provided by ecosystem services cannot only help in the design of efficient mechanisms for environmental conservation, but also in achieving the support of these mechanisms by the local stakeholder...

The exchange fluxes of carbon dioxide between wet arctic polygonal tundra and the atmosphere were investigated by the micrometeorological eddy covariance method. The investigation site was situated in the centre of the Lena River Delta in Northern Siberia (7222 N, 12630 E). The study region is characterized by a polar and distinctly continental climate, very cold and ice-rich permafrost and its...

The aim of this study was to evaluate the amount and quality of water in the Magdalena-Eslava river system and to propose alternatives for sustainable water use. The system is the last urban river in the vicinity of Mexico City that supplies surface water to the urban area. Historical flow data were analyzed (1973-2010), along with the physicochemical and bacteriological attributes, documenting...

-Snake River sockeye salmon Oncorhynchlls nerka. li sted under U.S. law as endangered in 1991 in response to a decline in anadromous adult numbers, spend their first 12 years in Redfi sh Lake, Idaho, before migrating to the sea. To determine how nutrient enhancement might influence phytoplankton , zooplankton, and fi sh production, we performed fertilization experiments in large enclosures in t...

The increasing resistance to carbapenems is an alarming threat in the fight against multiresistant bacteria. The dissemination properties of antimicrobial resistance genes are supported by their detection in a diverse population of bacteria, including strains isolated from the environment. The objective of this study was to investigate the presence of carbapenemase-producing Enterobacteriaceae ...