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Call for Papers for the semi-thematic N° 67: (Re)defining rural territories, between the global South and North: actors, processes, scales.

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Vulnerability indices to erosion of beaches of Ilha de Itamaracá, coastal north Pernambuco, Brazil

Authors

  • Carlos Fabrício Assunção da Silva Universidade Federal de Pernambuco
  • Bruno Ferreira
  • Eduardo Paes Barreto
  • Maria das Neves Gregório
  • Valdir do Amaral Vaz Manso
  • Ana Lúcia Bezerra Candeias
  • Weyller Diogo Albuquerque Melo
No. 52 (2016)
https://doi.org/10.5354/0719-5370.2016.44619

Abstract

Forte Orange, Pilar and Jaguaribe beaches are located on Itamaracá Island, 50 km North of Recife. In the last few decades these beaches have experienced rapid urban growth, connected to the tourism activities in the area. The irregular constructions and the tourist business in the area have decreased sediment transport capacity, along with its deposition in the beach system. This interference in the beach system’s morph dynamics over the time, has caused erosion in the study area. This work aims to identify and analyze the degree of erosion vulnerability. Human activities and the beach’s natural characteristics were considered. During the mapping of the area sectors by cells were identified and vulnerability tables were assigned, defined as: high, medium and low. Sector 1 (South) presented a moderate degree of vulnerability to erosion, since it had a developed post-beach tending to progradation. Sector 2(Center) presented a high degree of vulnerability, where a large part of the post-beach was totally occupied, presenting only protection structure against erosion. Sector 3 (North) also presented a high degree of vulnerability, a large part of this sector has the post-beach totally occupied by inappropriate buildings (bars and residences), and a small part of this area has been developed tending to progradation. Therefore, the sector identification through these quantitative and semi qualitative indices proved to be an important tool, being one more subsidy to the coastal management.

Keywords:

Beaches, Buildings, Vulnerability, Progradation, Island of Itamaracá, Erosion.

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How to Cite
Assunção da Silva, C. F., Ferreira, B., Barreto, E. P., Gregório, M. das N., Vaz Manso, V. do A., Bezerra Candeias, A. L., & Albuquerque Melo, W. D. (2016). Vulnerability indices to erosion of beaches of Ilha de Itamaracá, coastal north Pernambuco, Brazil. Investigaciones Geográficas, (52), pp. 71–82. https://doi.org/10.5354/0719-5370.2016.44619
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Investigaciones Geográficas
Facultad de Arquitectura y Urbanismo
Universidad de Chile
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