Coastal Vulnerability Assessment using geoindicators: case study of Rio Grande do Sul coastline

Abstract

Geoindicators are means adopted for the measurement of geological processes and phenomena that occur at or near the Earth's surface and vary significantly over periods of 100 years or less. These tools have focused on assessing geological impacts and risks over the last three decades. However, the use of geoindicators is not widely known and has not been as greatly exploited as have most environmental indicators. The objective of this study is to contribute to the diffusion of information about and the application of geoindicators. We have defined, in terms of geoindicators, parameters and aspects of coastal environments that are commonly studied or monitored. The geoindicators proposed were designed for assessing coastal physical vulnerability in the case of the coastal beaches of Rio Grande do Sul, Brazil. Four geoindicators were defined and tested: the height and morpho-ecological state of the foredunes, shoreline position, and washout concentrations. An additional sócio-environmental indicator was included, sanitary quality. These indicators were brought together to constitute a Physical Vulnerability Index that represented seven locations along the coastline assessed. In addition, the indicators and Index values were used to generate a cartographic map that could be understood by the public and used by decision makers. Abstract

The Development of a Model for the Assessment of Good Practices of Integrated Coastal Management as the Base for the Management

“…Categorizada como a segunda fase de desenvolvimento da pesquisa, o desenvolvimento de um Sistema de Indicadores considerou, além do arcabouço legal pertinente ao tema, um conjunto de referências abrangentes utilizadas na literatura científica específica sobre a construção de indicadores (Coltrinari & McCall, 1995;Mitchell et al, 1995;Mannis, 1996;Berger, 1997;Baker, 1998;Jannuzzi, 2005;UNEP, 2006;Oliveira & Souza, 2007;Tavares et al, 2007;Magalhães Júnior, 2011;Souza & Nicolodi 2016;Tischer & Polette, 2016;Nicolodi et al, 2018;Zapater et al, 2019…”

Avaliação Do Risco À Erosão Costeira Em Praias Urbanizadas Do Paraná

“…al., 2018), a densidade de sangradouros naturais e galerias de escoamento pluvial (FIGUEIRE-DO e CALLIARI, 2005;FIGUEIREDO et. al, 2007;NOVAK et al, 2016;SOUZA e NICOLODI, 2016), e tendências de transporte sedimentar longitudinal (SOU-ZA et al, 2016). Para obter a classifi cação de risco de forma integrada foram estabelecidas relações quali/ quantitativas entre estes indicadores, considerando os seus principais efeitos individuais e conjugados sobre a costa e que estão diretamente relacionados com o risco à erosão costeira.…”

Regional Coastline Changes and Future Predicted Scenario on Southern Brazil

“…In Brazil, coastal erosion exceeds shoreline progradation, being significant on beaches, cliffs, and estuaries (Rodriguez et al, 2016;Muehe, 2018). Some of the most important studies on this topic in Brazil can be seen in Calliari and Speranski, 2001;Esteves et al, 2002;Souza-Filho and Paradella, 2003;Krause and Soares, 2004;Williams and Esteves, 2005;Angulo et al, 2006;Bittencourt et al, 2006;Dillenburg et al, 2004;Dominguez et al, 2006;El Robrini et al, 2006;;Horn, 2006;Klein et al 2006;Manso et al, 2006;Neves et al, 2006;Toldo et al, 2006;Vital et al, 2006;Muehe and Neves, 2008;Alves, 2009;Muehe, 2010;Souza and Nicolodi, 2016;Martelo and Nicolodi, 2018;Oliveira et al, 2019;Figueiredo et al 2020. An update of the general situation of coastal erosion in Brazil was organized and published by Muehe (2018).…”