Anthropic interference in mangrove areas of the Mundau-Manguaba estuarine lagoon complex , Alagoas, Brasil: um estudo de caso

• Published in: Ciência rural 2020-10, Vol.50 (10), p.1
• Main Authors: Medeiros, Amanda Silva de, Costa, Joao Gomes da, Araujo, Kallianna Dantas, Calheiros, Acacia Rodrigues, Sant'Anna, Selenobaldo Alexinaldo Cabral de, Silva, Jose Adenilson Francisco da, Souza, Mayara Andrade, Nascimento, Velber Xavier
• Format: Article
• Language: English
• ISSN: 0103-8478
• DOI: 10.1590/0103-8478cr20200356

The mangrove is a coastal ecosystem that is present in different parts of the world. It provides various ecosystem services from food supply to the influence of climate change. Due to the development of society, this ecosystem has been subjected to significant impacts from anthropogenic activities. Therefore, the objective of this research was to evaluate the environmental impacts caused in mangrove areas that have undergone modifications as a result of anthropic activities (agricultural cultivation, deforestation, civil construction) compared with those of conserved mangrove areas. This research took place through the analysis of the temporal sequence of aerial images (Google Earth) and soil quality analysis through field collections to evaluate the chemical and biological indicators in the different land use systems. As these are permanent changes that affect the type of soil and its coverage, significant differences were obtained between the chemical and biological characteristics of the four environments, with different usage systems. The mangrove has been negatively impacted by inadequate management and land occupation. Continuity of anthropic intervention in the mangrove will promote the disappearance of this ecosystem in the long term. Among the chemical and biological attributes used for the analyses that were performed, aluminum and edaphic organisms were the ones that allowed the greatest contribution of distinction from the degree of disturbance in areas of agricultural cultivation, deforestation and civil construction/mangrove transition. Key words: degradation, coastal ecosystem, environmental impact. O manguezal e um ecossistema costeiro, presente em diversas partes do mundo, provedor de diversos servicos ecossistemicos desde a provisao de alimentos a influencia das mudancas climaticas. Devido ao desenvolvimento da sociedade, este ecossistema tem sido submetido a significativos impactos proveniente das atividades antropogenicas. Diante disso, o objetivo deste trabalho foi avaliar os impactos ambientais ocasionados em areas de mangue que sofreram modificacoes resultantes de atividades antropicas (cultivo agricola, desmatamento, construcao civil) comparando com area de mangue conservado. Esta pesquisa se deu atraves da analise da sequencia temporal de imagens aereas (Google Earth), e analise da qualidade do solo mediante coletas em campo para avaliacao dos indicadores quimicos e biologicos nos diferentes sistemas de uso do solo. Por se tratarem