MODELS OF ENVIRONMENTAL RECOVERY IN ECOSYSTEMS OF MANGROVES ASSOCIATED WITH SALT PRODUCTION IN BRAZILIAN SOLAR SALT WORKS
The northern coast of the Rio Grande do Norte (Brazil) state has mangroves running the length of its main estuaries, which have been subjected to a series of anthropological pressures for many years. This ecosystem is highly fragile due to natural processes and human interventions on the coastal zone. Such fragility is typical of the entire Brazil northeast coast, where the adverse climatic conditions and accelerated process of occupation of the coastal zone, that includes shrimp farms and urban expansion, with other activities, is a permanent pressure for this ecosystem. The mangroves work as barriers along with saltworks in order to reduce the spread of pollution in waters of the estuary, assuring the quality and the development the local salt production. The survey presented in this study was developed by the saltworks located in the northern coast of the state do Rio Grande do Norte (Brazil), at geographic coordinates of 5° S/36° 43 49.0 W. The major saltworks in the country are installed on that coast; being responsible for 95％ of the produced and exported marine salt. Thus, the central objective of the survey was the identification of the degraded areas of mangrove swamps near the solar saltworks, with later implementation of methods and models of environmental recovery in those areas. From the survey data, the mangrove swamp vegetation in the area under analysis was characterized as a mangrove swamp strip, with the occurrence of discontinuous stretches of good developed vegetation, followed by stretches with damaged vegetation and/or in regeneration. Taking the structure and organization into consideration of the analyzed vegetation, in several areas suggests the artificial forestation with young specimens of Rhizophora mangle, Laguncularia racemosa, Avicennia germinans and A. schaueriana, once the formation of a mixed forest comes to guarantee a viability of the vegetation as a supportive element of the biological estuarine basis. The accomplishment of actions for recovery of damaged areas in ecosystems of saltworks has demonstrated the evident necessity to promote environmental restoration against the specific diversity for each unit of habitat.
viability management mangroves saltworks
R.M.ROCHA D.F.S.COSTA D.H.M.MEDEIROS F.A.M.SANTOS L.F.SILVA
Universidade Federal do Rio Grande do Norte, Semi-arid Ecology Laboratory Rua Joaquim Gregorio, s.n.Penedo.CEP.59.300-000.Caico.Rio Grande do Norte (Brazil)
国际会议
9th International Symposium on Salt(第九届世界盐业大会)
北京
英文
748-755
2009-09-05（万方平台首次上网日期，不代表论文的发表时间）