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| Provedor de dados: |
OceanDocs
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| País: |
Belgium
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| Título: |
Estructura poblacional de Porites astreoides, Agaricia agaricites y Acropora palmata (Cnidaria: Scleractinia) en crestas arrecifales de la región noroccidental de Cuba
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| Autores: |
Perera-Pérez, O.
González-Díaz, S.P.
Álvarez Fernández, S.
González-Sanson, G.
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| Data: |
2012-12-24
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| Ano: |
2012
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| Palavras-chave: |
Reefs
Size distribution
Human impact
Recruitment
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| Resumo: |
La investigación se llevó a cabo entre abril del 2006 y mayo del 2007. El objetivo fue determinar la estructura de las poblaciones de Porites astreoides, Agaricia agaricites y Acropora palmata en crestas de arrecifes de la región noroccidental de Cuba. Los indicadores ecológicos seleccionados fueron: talla media (diámetro mayor y altura), composición por clases de tallas y parámetros de la distribución de frecuencias de tallas (moda, asimetría, curtosis, desviación estándar y coeficiente de variación). Los valores medios de diámetro y altura estimados para P. astreoides en el arrecife de Los Colorados fueron superiores (11,2 ± 0,3 cm y 6,7 ± 0,2 cm, respectivamente) a los obtenidos en Playa Baracoa y Rincón de Guanabo, mientras que los de A. agaricites (9,8 ± 0,3 cm y 6,5 ± 0,2 cm, respectivamente) y A. palmata (41,1 ± 1,9 cm y 22,2 ± 1,0 cm, respectivamente) fueron superiores en Playa Baracoa. El análisis de la composición por tallas evidenció un reclutamiento relativamente bajo en todos los arrecifes. En las tres especies predominaron las clases de tallas de adultos, lo que pudiera deberse a una mortalidad diferencial de reclutas y juveniles. Los patrones observados entre arrecifes sugieren que los agentes estresantes de origen terrestre no están ejerciendo un efecto detectable sobre los procesos demográficos de las poblaciones investigadas.
The research was carried out from July 2006 to May 2007 in order to determine the population structure of P. astreoides, A. agaricites and A. palmata in coral reefs crests of the northwestern region of Cuba. The selected ecological indicators were: mean sizes (maximum diameter and height), size composition and size-frequency distribution parameters (mode, skewness, kurtosis and coefficient of variation). Mean diameter and height of P. astreoides in Los Colorados reef were higher (11,2 ± 0,4 cm and 6,7 ± 0,2 cm, respectively) than in Playa Baracoa and Rincon de Guanabo reefs; values for A. agaricites (9,8 ± 0,3 cm and 6,5 ± 0,2 cm) and A. palmata (41,1 ± 1,9 cm and 22,2 ± 1,0 cm) were higher in Playa Baracoa. The size-frequency distributions suggested a relatively low recruitment in the studied reefs. For all the species the size-frequency distribution were dominated by size classes corresponding to adults maybe because the differences in the mortality rate of recruits and juveniles in the study area. The consistency in the observed patterns across the studied reefs suggests that land-based stressors were not affecting demographic processes in these populations.
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| Tipo: |
Journal Contribution
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| Idioma: |
Espanhol
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| Identificador: |
Revista de Investigaciones Marinas, 32 (1), p. 62-73
1991-6086
http://hdl.handle.net/1834/4545
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| Relação: |
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http://creativecommons.org/licenses/by-nc/3.0/
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