external costs of environmental degradation are often ignored in economic analysis of projects. the mail goal of the paper is to economically analyze the current alternatives of meighan wetland utilization including extraction of sodium sulfate, aquaculture of artemia and integrative alternative considering external costs of wetland degradation. in order to detect eventual degradation of wetlan...

F.1.1 Current Wetland Area and Rates of Loss The ability to estimate soil carbon pools and fluxes in North American wetlands is constrained by the national inventories (or lack thereof) for Canada, the United States, and Mexico (Davidson et al., 1999). The National Wetland Inventory (NWI) program of the United States has repeatedly sampled several thousand wetland sites using aerial photographs...

Wetlands provide habitat for a diverse array of aquatic and semiaquatic species, many of which provide direct economic and recreational value (Woodward and Wui 2001). Despite the provided by wetland fauna and flora, ecosystem services historical wetland loss has been dramatic. Wetland loss was >50% in the U.S. and 60-70% in Europe by the 1980s, with most losses resulting from agriculture and ur...

Information about wetland dynamics remains a major missing gap in characterizing, understanding, and projecting changes in atmospheric methane and terrestrial water storage. A review of current satellite methods to delineate and monitor wetland change shows some recent advances, but much improved sensing technologies are still needed for wetland mapping, not only to provide more accurate global...

18 This paper presented an integrated conceptual model to describe the substrate 19 clogging in constructed treatment wetland. The model is based on pore space 20 reduction of the wetland substrate during the integrated treatment processes including 21 physical, biological and plant-related processes. A group of laboratory scale 22 constructed wetlands (CWs) was employed to set up the experimen...

ghourighol international wetland which is located at bostan-abad conuty in east azerbaijan province is known as one of the important tourism and promenade zone of iran due to its special natural gravities. therefore, studying tourism value of this place could express the importance of its protection, predicting needs, removing scarcities and the development of tourism. the aim of this research ...

Various types of cyanobacterial mats were predominant in a wetland, constructed for the remediation of oil-polluted residual waters from an oil field in the desert of the south-eastern Arabian Peninsula, although such mats were rarely found in other wetland systems. There is scarce information on the bacterial diversity, spatial distribution and oil-biodegradation capabilities of freshwater wet...

Largely influenced by the passage of the Swamp Land Act of 1849, many wetlands were lost in the coastal plain region of the southeastern United States, primarily as a result of drainage for agricultural activities. To better understand the chemical response of soils during wetland conversion, soil core samples were collected from the converted beef cattle pastures and from the natural wetland a...

Original scientific paper Efficiency of waste water treatment in a subsurface constructed wetland depends on influent water quality, quality water effluent demand, climate conditions, substrate type and plants used. Therefore, the efficiency of the constructed wetlands that are designed and constructed according to the literature design parameters can be different then expected. The results of ...

A free water surface wetland treating domestic wastewater for the village of Pompia in Southern Crete was constructed in early 1999 and became operational on September 1st of the same year. The total surface area of the wetland was 5700m2, designed for 1200 people equivalent. Arundo donax (giant reed) was used for the vegetation of the bed. Approximately 4-6 plants were introduced per square me...