Análisis de la reforestación de Manglares impulsada por le proceso de regularización del sector camaronero en Ecuador (2008-2012)
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2014
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En nuestras costas muchos son los inconvenientes que se presentan debido al efecto nocivo que ocasionan al turismo las medusas y que son llamadas equivocadamente aguas malas, desconociéndose las especies existentes en nuestro ecosistema costero. La presente investigación se desarrolló en el sector Sur de la Bahía de Santa Elena durante Octubre 2004 a Octubre 2005, se identificó 24 especies, clasificados en 6 órdenes: 5 de la clase Hydrozoa, con 16 familias; 22 géneros y 22 especies, y 2 clases: la clase Scyphozoa con 1 especie y la clase Cubozoa con 1 especie.
Se consideró las dos épocas estacionales (lluviosa y seca) registrándose para la época lluviosa el 41% de biomasa total con 6477 ind . (100m3)-1, su mayor densidad se registro en mayo durante en la tarde con una temperatura de 22.8°C, mientras que en la época seca se registró el 59% de biomasa total con 9159 ind . (100m3)-1 y su mayor densidad se registró en julio durante la mañana con una temperatura de19.8ºC. Durante el análisis se observó la presencia del orden Leptomedusae representado por la especie Obelia sp dominante en las dos épocas estacionales tanto en la mañana y tarde, seguido del orden Trachymedusae con la especie Liriope tetraphylla y Aglaura hemistoma, el orden Anthomedusae con la especie Bougainvillia muscus.
En el análisis estadístico se obtuvo un intervalo de confianza del 95% en la estación lluviosa y una correlación positiva promedio en la temperatura con 0.75.
Para la estación seca se registró una correlación negativa significativa de -0.77 en varias especies. En el índice de Shannon se reportó una máxima diversidad en época seca durante octubre con 2.58 bits en la mañana y por las tardes las máxima densidad se registró en septiembre con 2.71 bits. En la estación lluviosa en la mañana se reportó un máximo índice en enero con 2.74 bits, mientras por la tarde la máxima diversidad se evidenció en febrero con 2.72 bits.
El índice de uniformidad durante la mañana en la estación seca reportó su máximo índice en agosto con 0.92 bits y mientras en la tarde se observó dos índices máximos en junio y septiembre con un promedio de 0.90 bits. Para la estación lluviosa en la mañana el índice presentó valores altos de 0.89 bits y por la tarde un índice mínimo de 0.87 bits en toda el área.
In our coasts it have been some problems due to adverse effects on tourism caused jellyfish which mistakenly called jellyfish, unknown species found in our coastal ecosystem. This study was conducted in the South area of St. Elena Bay from October 2004 to October 2005, Twenty for species were identified, classified into six orders: five of the class Hydrozoa, with 16 families, 22 genera and 22 species, and 2 classes: Class Scyphozoa with a kind and class Cubozoa with 1 species. Both seasonal periods (rainy and dry) were considered. For the rainy season 41% of total biomass with 6477 ind . (100m3)-1 was registered, the highest density was recorded in May at the afternoon with a temperature of 22.8°C, while at the dry season was recorded of 59% from a total biomass of 9159 ind . (100m3)-1. The higest density was recorded in July at the morning with a temperature of 19.8ºC. Leptomedusae order was represented by Obelia sp as dominant species to both seasonal periods (morning and afternoon), followed by Trachymedusae order (genus Liriope tetraphylla and Aglaura hemistoma) and the order Anthomedusae with the genus Bougainvillia muscus. With a confidence interval of 95% there were few changes at the jelly fish distributiobn. At the rainy season, there was a positive correlation between the distribution of Jelly fish species (Euphysa aurata, Eucheilota nemoni y Solmundella bitentaculata, etc.) and temperature. While to the dry season temperature was negatively correlated (-0.77) with the general distribution of Jellyfish species (Eucheilota nemoni, Clytia hemisphaerica y Provoscidactyla ornata). A high diversity was reported to the dry season in October and September with 2.58 bits in the morning and, 2.71 bits at evening respectively. To the rainy season a maximum value was reported to January with 2.74 bits (morning), while in February with 2.72 bits. In August there was a value of uniformity of 0.92 bits (higest value at the afternoon) while June and September the average value was 0.90 bits. At the rainy season the highest values of uniformity were 0.89 bits and 0.87 bits to the morning and to the afternoof respectively.
In our coasts it have been some problems due to adverse effects on tourism caused jellyfish which mistakenly called jellyfish, unknown species found in our coastal ecosystem. This study was conducted in the South area of St. Elena Bay from October 2004 to October 2005, Twenty for species were identified, classified into six orders: five of the class Hydrozoa, with 16 families, 22 genera and 22 species, and 2 classes: Class Scyphozoa with a kind and class Cubozoa with 1 species. Both seasonal periods (rainy and dry) were considered. For the rainy season 41% of total biomass with 6477 ind . (100m3)-1 was registered, the highest density was recorded in May at the afternoon with a temperature of 22.8°C, while at the dry season was recorded of 59% from a total biomass of 9159 ind . (100m3)-1. The higest density was recorded in July at the morning with a temperature of 19.8ºC. Leptomedusae order was represented by Obelia sp as dominant species to both seasonal periods (morning and afternoon), followed by Trachymedusae order (genus Liriope tetraphylla and Aglaura hemistoma) and the order Anthomedusae with the genus Bougainvillia muscus. With a confidence interval of 95% there were few changes at the jelly fish distributiobn. At the rainy season, there was a positive correlation between the distribution of Jelly fish species (Euphysa aurata, Eucheilota nemoni y Solmundella bitentaculata, etc.) and temperature. While to the dry season temperature was negatively correlated (-0.77) with the general distribution of Jellyfish species (Eucheilota nemoni, Clytia hemisphaerica y Provoscidactyla ornata). A high diversity was reported to the dry season in October and September with 2.58 bits in the morning and, 2.71 bits at evening respectively. To the rainy season a maximum value was reported to January with 2.74 bits (morning), while in February with 2.72 bits. In August there was a value of uniformity of 0.92 bits (higest value at the afternoon) while June and September the average value was 0.90 bits. At the rainy season the highest values of uniformity were 0.89 bits and 0.87 bits to the morning and to the afternoof respectively.
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HYDROMEDUSAE, ÍNDICES DE DIVERSIDAD, VARIACIÓN POBLACIONAL, DISTRIBUCIÓN, ABUNDANCIA