Visual assessment of the coastal fish assemblages from the area of the proposed Gando-Arinaga Marine Reserve (Gran Canaria, Canary Islands)

Visual assessment of the coastal fish assemblages from the area of the proposed Gando-Arinaga Marine Reserve (Gran Canaria, Canary Islands)

Eighty-eight visual assessments (5-min stationary censuses in an area of 200 m2) were made during the winter of 1999|00E2|??2000 and summer of 2000 in the area of the proposed Gando-Arinaga Marine Reserve (Gran Canaria, Canary Islands), in order to optimize a technique for the visual evaluation of t...

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Hoofdauteurs: Tuya, F, Reuss, GM, Martín, JA, Luque, A
Formaat: Online
Taal:eng
Gepubliceerd in: Iniversidad Autónoma de Baja California 2004
Online toegang:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/102
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id oai:cienciasmarinas.com.mx:article-102
record_format ojs
institution Ciencias Marinas
collection OJS
language eng
format Online
author Tuya, F
Reuss, GM
Martín, JA
Luque, A
spellingShingle Tuya, F
Reuss, GM
Martín, JA
Luque, A
Visual assessment of the coastal fish assemblages from the area of the proposed Gando-Arinaga Marine Reserve (Gran Canaria, Canary Islands)
author_facet Tuya, F
Reuss, GM
Martín, JA
Luque, A
author_sort Tuya, F
title Visual assessment of the coastal fish assemblages from the area of the proposed Gando-Arinaga Marine Reserve (Gran Canaria, Canary Islands)
title_short Visual assessment of the coastal fish assemblages from the area of the proposed Gando-Arinaga Marine Reserve (Gran Canaria, Canary Islands)
title_full Visual assessment of the coastal fish assemblages from the area of the proposed Gando-Arinaga Marine Reserve (Gran Canaria, Canary Islands)
title_fullStr Visual assessment of the coastal fish assemblages from the area of the proposed Gando-Arinaga Marine Reserve (Gran Canaria, Canary Islands)
title_full_unstemmed Visual assessment of the coastal fish assemblages from the area of the proposed Gando-Arinaga Marine Reserve (Gran Canaria, Canary Islands)
title_sort visual assessment of the coastal fish assemblages from the area of the proposed gando-arinaga marine reserve (gran canaria, canary islands)
description Eighty-eight visual assessments (5-min stationary censuses in an area of 200 m2) were made during the winter of 1999|00E2|??2000 and summer of 2000 in the area of the proposed Gando-Arinaga Marine Reserve (Gran Canaria, Canary Islands), in order to optimize a technique for the visual evaluation of the fish assemblages, describe the situation and environmental factors that structure the fish community, and determine the influence of the different protection categories defined on the abundance and size of certain species of interest to fisheries. A total of 36 fish species were observed. The most frequent (frequency of occurrence >50%) were Abudefduf luridus, Thalassoma pavo, Chromis limbatus, Sparisoma cretense and Diplodus vulgaris, while the most abundant (mean abundance per census >5 ind 100 m–2) were Pomadasys incisus, Boop boops, A. luridus, C. limbatus and T. pavo. The mean number of species per census varied between 18.25 and 3.5 (mean = 7.61). The mean number of individuals varied between 382.62 and 2.75 (mean = 94.43). Diversity (H′) was low (0.88–0.22, mean = 0.52) and evenness (J′) ranged from 0.33 to 0.94 (mean = 0.64). Differences in abundance and size among the different zones defined were not detected for S. cretense whereas differences in size but not in abundance were detected for Mullus surmuletus and Diplodus sargus. Differences were not found for the biotic descriptors of the fish community in terms of seasonality, but differences were found relative to habitat. Multivariate techniques showed that substrate slope and depth are the most important abiotic factors structuring the community. Species richness and total abundance of individuals increased with depth and slope, whereas evenness decreased.
publisher Iniversidad Autónoma de Baja California
publishDate 2004
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/102
_version_ 1715723921963089920
spelling oai:cienciasmarinas.com.mx:article-1022019-04-22T19:10:52Z Visual assessment of the coastal fish assemblages from the area of the proposed Gando-Arinaga Marine Reserve (Gran Canaria, Canary Islands) Evaluación de las comunidades ícticas litorales de la zona propuesta como Reserva Marina Gando-Arinaga (Gran Canaria, Islas Canarias) mediante muestreos visuales Tuya, F Reuss, GM Martín, JA Luque, A marine reserve coastal fish assemblages visual censuses Gran Canaria reserva marina comunidades de peces litorales censos visuales Gran Canaria Eighty-eight visual assessments (5-min stationary censuses in an area of 200 m2) were made during the winter of 1999|00E2|??2000 and summer of 2000 in the area of the proposed Gando-Arinaga Marine Reserve (Gran Canaria, Canary Islands), in order to optimize a technique for the visual evaluation of the fish assemblages, describe the situation and environmental factors that structure the fish community, and determine the influence of the different protection categories defined on the abundance and size of certain species of interest to fisheries. A total of 36 fish species were observed. The most frequent (frequency of occurrence >50%) were Abudefduf luridus, Thalassoma pavo, Chromis limbatus, Sparisoma cretense and Diplodus vulgaris, while the most abundant (mean abundance per census >5 ind 100 m–2) were Pomadasys incisus, Boop boops, A. luridus, C. limbatus and T. pavo. The mean number of species per census varied between 18.25 and 3.5 (mean = 7.61). The mean number of individuals varied between 382.62 and 2.75 (mean = 94.43). Diversity (H′) was low (0.88–0.22, mean = 0.52) and evenness (J′) ranged from 0.33 to 0.94 (mean = 0.64). Differences in abundance and size among the different zones defined were not detected for S. cretense whereas differences in size but not in abundance were detected for Mullus surmuletus and Diplodus sargus. Differences were not found for the biotic descriptors of the fish community in terms of seasonality, but differences were found relative to habitat. Multivariate techniques showed that substrate slope and depth are the most important abiotic factors structuring the community. Species richness and total abundance of individuals increased with depth and slope, whereas evenness decreased. Se ejecutaron 88 muestreos visuales (censos estacionarios de 5 min y área = 200 m2) durante el invierno de 1999–2000 y verano de 2000 en la zona propuesta como Reserva Marina Gando-Arinaga (Gran Canaria, Islas Canarias), con el fin de optimizar una técnica que permita la evaluación visual de las poblaciones ícticas, describir la situación y los factores ambientales que estructuran la comunidad de peces, y conocer la influencia de las diferentes categorías (figuras de protección) definidas en la abundancia y tallas de ciertas especies de interés pesquero. Se observaron 36 especies de peces. Las más frecuentes (>50% de frecuencia de observación) fueron Abudefduf luridus, Thalassoma pavo, Chromis limbatus, Sparisoma cretense y Diplodus vulgaris, mientras que las más abundantes (abundancia media por censo >5 ind 100 m–2) fueron Pomadasys incisus, Boop boops, A. luridus, C. limbatus y T. pavo. El número medio de especies por censo osciló entre 18.25 y 3.5 (media = 7.61). El número medio de individuos osciló entre 382.62 y 2.75 (media = 94.43). La diversidad (H′) fue baja (0.88–0.22, media = 0.52) y la equitatividad (J′) varió entre 0.33 y 0.94 (media = 0.64). Para Sparisoma cretense no se detectaron diferencias entre las diferentes categorías de emplazamientos para la abundancia y talla, mientras que para Mullus surmuletus y Diplodus sargus se detectaron diferencias para las tallas, pero no para la abundancia. No se registraron diferencias para los descriptores de la comunidad en función de la estacionalidad, habiéndose observado diferencias según el hábitat. Técnicas multivariantes mostraron que pendiente y profundidad son los factores abióticos más importantes que estructuran la comunidad. La riqueza de especies y la abundancia total de individuos mostraron un incremento con la profundidad y pendiente, mientras que la equitatividad disminuyó con dichos parámetros. Iniversidad Autónoma de Baja California 2004-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/102 10.7773/cm.v30i12.102 Ciencias Marinas; Vol. 30 No. 1B (2004); 259-278 Ciencias Marinas; Vol. 30 Núm. 1B (2004); 259-278 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/102/82

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