Comparación de dos métodos de muestreo visual de peces de arrecifes coralinos en la Bahía de Murdeira, isla de Sal, Cabo Verde

  1. Isabel Sancibrián 1
  2. Rui Freitas 2
  3. José Carlos Hernández Pérez 1
  1. 1 Universidad de La Laguna
    info

    Universidad de La Laguna

    San Cristobal de La Laguna, España

    GRID grid.10041.34

  2. 2 Universidade de Cabo Verde(Portugal)
Journal:
Scientia Insularum: Revista de Ciencias Naturales en islas

ISSN: 2659-6644

Year of publication: 2019

Issue: 2

Pages: 89-119

Type: Article

Export: RIS
DOI: 10.25145/j.Si.2019.02.05 DIALNET GOOGLE SCHOLAR lock_openOpen access editor

Abstract

This study aims to compare the efficiency of two underwater visual census methods on tropical fish communities of Murdeira bay, off the southwestern coast of Sal island, Cabo Verde. two methods were tested: strip belt transect and stationary point count. Parameters compared were: species richness, abundance and diversity (d’). The results show that there are significant differences due to the interaction between the method and location, being site 2 the one that showed significant differences in the estimates generated by each method. The analysis of species sampled performed for the entire experiment shows that the stationary point count method is the most complete, as it is able to record more species and individuals than the transect method. Finally, the diversity analysis reveals that site 2 is the most diverse, coinciding with the only location where differences in the estimates were found according to the sampling method used. This study highlight the advantages of using non-destructive methods and the importance of taking into account the characteristics of the study area for choosing the sampling method.