Tracing rare stable isotopes from plant material through the ecosystem provides the most sensitive information about ecosystem processes; from CO2 fluxes and soil organic matter formation to small-scale stable-isotope biomarker probing. Coupling multiple stable isotopes such as (13)C with (15)N, (18)O or (2)H has the potential to reveal even more information about complex stoichiometric relatio...

BACKGROUND Research was carried out in Konta Special Woreda (District); it is a remote area with lack of infrastructure like road to make any research activities in the area. Therefore, this research was conducted to investigate medicinal plants of the Konta people and to document the local knowledge before environmental and cultural changes deplete the resources. METHODS The information was ...

One of the applied methods for environmental impact assessment is the index of global pollution (IGP) proposed by Rojanschi in 1991. This methodology enables the global estimation for the ecosystem state affected more or less by human activities. Unfortunately, Rojanschi’s method has a limitation; it can be applied only if at least three environmental components are considered. Frequently, many...

Department of Plant Sciences, Section of Crop and Ecosystem Sciences, University of California, Davis, California 95616–8780 (P.G.); National Center for Genome Resources, Santa Fe, New Mexico 87505 (W.D.B.); Raymond F. Baker Center for Plant Breeding (E.C.B.), and United States Department of Agriculture Agricultural Research Service, Department of Agronomy (R.C.S.), Iowa State University, Ames,...

Spartina alterniflora was introduced to Beihai, Guangxi (China), for ecological engineering purposes in 1979. However, the exceptional adaptability and reproductive ability of this species have led to its extensive dispersal into other habitats, where it has had a negative impact on native species and threatens the local mangrove and mudflat ecosystems. To obtain the distribution and spread of ...

Digital ecosystems are dynamic: they grow and evolve as new firms join the ecosystem. Yet, the way they evolve over time is not clearly understood. We draw on an evolutionary network approach to explore the evolutionary pattern of digital ecosystems. In particular, we discover that the changing patterns of combination of existing digital components drive the changes in the topological structure...

Nature provides life-support services which do not merely constitute the basis for ecosystem integrity but also benefit human societies. The importance of such multiple outputs is often ignored or underestimated in environmental planning and decision making. The economic valuation of ecosystem functions or services has been widely used to make these benefits economically visible and thus addres...