Phytoecological analysis and zonation of mangrove of the hypersaline estuary

Abstract

O manguezal é um ecossistema costeiro de grande importância ecológica, apresentando elevada fragilidade frente aos processos naturais e às intervenções humanas na zona costeira. A pesquisa em questão tem por objetivo analisar a relação entre a distribuição das espécies de mangue e os parâmetros geoquímicos da água e do solo no estuário do rio Apodi-Mossoró, localizado no litoral setentrional do Rio Grande do Norte, que é um estuário hipersalino. Para a caracterização da vegetação foram utilizados dados florísticos e estruturais amostrados ao longo do estuário, os quais foram relacionados com dados de salinidade da água e do solo. Os resultados indicam que a salinidade atua como fator limitante na distribuição das espécies de mangue ao longo do estuário, devendo esse parâmetro ser levado em consideração quando da elaboração de planos de gerenciamento e recuperação ambiental no estuário em análise.

Floristic Inventory of an Estuarine Area in Northeastern Brazil (Ponta do Tubarão Sustainable Development Reserve)

“…ex Moldenke, Conocarpus erectus L., Laguncularia racemosa (L.) C.F. Gaertn., and Rhizophora mangle L.) were also reported by Costa et al (2014) in the estuary of the Apodi-Mossoró River in Rio Grande do Norte State.…”

Multidisciplinary assessment of a restored mangrove ecosystem in Guanabara Bay, Brazil: Linking science and conservation

“…On the other hand, A. schaueriana exhibited the most limited recruitment across the PNMBM. Although recognized as a pioneer species capable of colonizing new and disturbed areas (Costa et al 2014), there appear to be minimum environmental thresholds necessary for propagule germination and seedling establishment (Scholander et al 1962). Additionally, the limited number of adult A. schaueriana suggests insu cient propagule production for effective recolonization.…”

An evaluation of the economic viability of environmental offsets in the saltworks industry

“…Although, some saltworks occupied large areas of permanent preservation, the vast majority of these occupations do not exceed 10%. In order to understand why the occupation of PPAs by the saltworks it is necessary to emphasize that this occupation, in the great majority of cases, occurred decades and even centuries before the appearance of the PPA concept itself (DINIZ et al, 2015), and that most of the salt flats that are now in use were built in areas along the watercourses that were periodically flooded by the tides, where the formation of sodium chloride naturally occurred (COSTA et al, 2014). In addition, priority was given to the layout of the salt pans as close as possible to the estuary margin, to enable the shipment of salt and the flow of water/sea production, thus providing a technical, logistical and economic justification for the practice.…”