Analysis of mangrove forest succession, using sediment cores: a case study in the Cananéia -Iguape coastal system, São Paulo Brazil

Autores/as

  • Marília Cunha-Lignon Université Libre de Bruxelles; Faculté des Sciences; Département de Biologie des Organismes; Complexité et Dynamique des Systèmes Tropicaux
  • Michel M. Mahiques Universidade de São Paulo; Instituto Oceanográfico
  • Yara Schaeffer-Novelli Universidade de São Paulo; Instituto Oceanográfico
  • Marcelo Rodrigues Universidade de São Paulo; Instituto Oceanográfico
  • Daniel A. Klein Universidade de São Paulo; Instituto Oceanográfico
  • Samara C. Goya Universidade de São Paulo; Instituto Oceanográfico
  • Ricardo P. Menghini Universidade de São Paulo; Instituto Oceanográfico
  • Clodoaldo C. Tolentino Universidade de São Paulo; Instituto Oceanográfico
  • Gilberto Cintrón-Molero U.S. Fish and Wildlife Service
  • Farid Dahdouh-Guebas Vrije Universiteit Brussel; Biocomplexity Research Focus, Plant Biology and Nature Management; Mangrove Management Group

DOI:

https://doi.org/10.1590/S1679-87592009000300001

Palabras clave:

Sediment cores, Mangrove, Zonation, Succession, Cananéia-Iguape Coastal System, Brazil

Resumen

Sediment cores are an essential tool for the analysis of the dynamics of mangrove succession. Coring was used to correlate changes in depositional environments and lateral sedimentary facies with discrete stages of forest succession at the Cananéia-Iguape Coastal System in southeastern Brazil. A local level successional pattern was examined based on four core series T1) a sediment bank; T2) a smooth cordgrass Spartina alterniflora bank; T3) an active mangrove progradation fringe dominated by Laguncularia racemosa, and; T4) a mature mangrove forest dominated by Avicennia schaueriana. Cores were macroscopically described in terms of color, texture, sedimentary structure and organic components. The base of all cores exhibited a similar pattern suggesting common vertical progressive changes in depositional conditions and subsequent successional colonization pattern throughout the forest. The progradation zone is an exposed bank, colonized by S. alterniflora. L. racemosa, replaces S. alterniflora as progradation takes place. As the substrate consolidates A. schaueriana replaces L. racemosa and attains the greatest structural development in the mature forest. Cores collected within the A. schaueriana dominated stand contained S. alterniflora fragments near the base, confirming that a smooth cordgrass habitat characterized the establishment and early seral stages. Cores provide a reliable approach to describe local-level successional sequences in dynamic settings subject to drivers operating on multiple temporal and spatial scales where spatial heterogeneity can lead to multiple equilibria and where similar successional end-points may be reached through convergent paths.

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Publicado

2009-09-01

Número

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naodefinida

Cómo citar

Analysis of mangrove forest succession, using sediment cores: a case study in the Cananéia -Iguape coastal system, São Paulo Brazil. (2009). Brazilian Journal of Oceanography, 57(3), 161-174. https://doi.org/10.1590/S1679-87592009000300001