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Ichthyofauna as an indicator of biotic integrity in a port region of the Amazon Coast of Maranhense, Brazil

Silva MHL;
Júnior ART;
Castro ACL;
Azevedo JWJ;
Silva SPS;
Silva FFS;
Ferreira LGP;
Carvalho MR;
Mendes DV;
Neta RNFC

Marcelo Henrique Lopes Silva

Audálio Rebelo Torres Júnior

Antonio Carlos Leal de Castro

James Werllen de Jesus Azevedo

Scarleth Patrícia Salomão da Silva

Filipe França dos Santos Silva

Larissa Gabrielle Pinheiro Ferreira

Marina Rocha de Carvalho

Danielle Viana Mendes

Raimunda Nonata Fortes Carvalho Neta


Resumen

The objective of this study was to evaluate the environmental quality of an estuarine region located in the port area of the Amazon Coast of Maranhão, based on the calculation of a biological integrity index (IIB) that uses ichthyofauna data as parameters. Fish were collected from May 2011 to November 2015 at 4 points (P1, P2, P3 and P4) with the aid of gillnets, with meshes ranging from 18 mm to 60 mm between opposite nodes. To calculate the IIB, attributes inherent to the local ichthyofauna were chosen and categories of biotic integrity (Excellent, Good, Fair, Poor, Very Poor and No Fish) were defined. A total of 56 fish species belonging to 15 orders were recorded. The family Sciaenidae had the largest number of species, the other families recorded were Ariidae, Carangidae, Engraulidae and Mugilidae. Carnivorous species were the most abundant with 51.79%, detritivorous totaled 32.14% and omnivorous 16.07%. The temporal and spatial analyses of the IIB indicated that the integrity classes were classified as "Poor", where the score ranged between 28 and 36. The use of the Biotic Integrity Index classified the environmental quality of São Marcos Bay as Poor, suggesting that the estuarine system has undergone environmental modifications. On the other hand, the study indicated that in the last five years the region has been showing stability, about the variation of biotic indexes.

 

DOI:https://doi.org/10.56238/sevened2024.007-018


Creative Commons License

Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial 4.0.

Derechos de autor 2024 Marcelo Henrique Lopes Silva, Audálio Rebelo Torres Júnior, Antonio Carlos Leal de Castro, James Werllen de Jesus Azevedo, Scarleth Patrícia Salomão da Silva, Filipe França dos Santos Silva, Larissa Gabrielle Pinheiro Ferreira, Marina Rocha de Carvalho, Danielle Viana Mendes, Raimunda Nonata Fortes Carvalho Neta

##plugins.themes.gdThemes.article.Authors##

  • Marcelo Henrique Lopes Silva
  • Audálio Rebelo Torres Júnior
  • Antonio Carlos Leal de Castro
  • James Werllen de Jesus Azevedo
  • Scarleth Patrícia Salomão da Silva
  • Filipe França dos Santos Silva
  • Larissa Gabrielle Pinheiro Ferreira
  • Marina Rocha de Carvalho
  • Danielle Viana Mendes
  • Raimunda Nonata Fortes Carvalho Neta