Análisis comparativo de la estructura de las comunidades macrobentónicas en dos zonas costeras en Ecuador
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2021
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Facultad de Ciencias Naturales. Universidad de Guayaquil
Resumen
Las comunidades macrobentónicas asociadas a litorales rocosos, constituyen un eslabón importante dentro de la red trófica, no obstante, son afectadas por factores físicos, químicos y antropogénicos, que provocan una disminución en la diversidad y abundancia de especies. En este estudio se comparó la estructura de las comunidades macrobentónicas presentes en litorales rocosos de Ballenita y Ayangue, Provincia de Santa Elena. Los muestreos fueron realizados por la Red RIEAE en los estratos intermareales (infralitoral, mesolitoral, supralitoral), en el 2012 y 2019. En Ballenita la especie más abundante fue Echinolittorina paytensis con el 28,17 %; el estrato infralitoral presentó la mayor abundancia y diversidad, mientras que el supralitoral fue el de menor diversidad y abundancia. En Ayangue la especie más abundante fue Siphonaria maura con el 64.78 %; el estrato infralitoral presentó una diversidad y abundancia normal, mientras que el supralitoral mostró una diversidad y abundancia baja.
The macrobenthic communities associated with rocky coastlines constitute an important link within the trophic web, however, they are affected by physical, chemical and anthropogenic factors, which cause a decrease in the diversity and abundance of species. In this study, the structure of the macrobenthic communities present in the rocky coastlines of Ballenita and Ayangue, Province of Santa Elena, was compared. The samplings were carried out by the RIEAE Network in the intertidal strata (infralitoral, mesolitoral, supralitoral), in 2012 and 2019. In Ballenita the most abundant species was Echinolittorina paytensis with 28.17%; the infralittoral stratum presented the highest abundance and diversity, while the supralittoral was the one with the lowest diversity and abundance. In Ayangue, the most abundant species was Siphonaria maura with 64.78%; the infralittoral layer presented a normal diversity and abundance, while the supralittoral layer showed a low diversity and abundance.
The macrobenthic communities associated with rocky coastlines constitute an important link within the trophic web, however, they are affected by physical, chemical and anthropogenic factors, which cause a decrease in the diversity and abundance of species. In this study, the structure of the macrobenthic communities present in the rocky coastlines of Ballenita and Ayangue, Province of Santa Elena, was compared. The samplings were carried out by the RIEAE Network in the intertidal strata (infralitoral, mesolitoral, supralitoral), in 2012 and 2019. In Ballenita the most abundant species was Echinolittorina paytensis with 28.17%; the infralittoral stratum presented the highest abundance and diversity, while the supralittoral was the one with the lowest diversity and abundance. In Ayangue, the most abundant species was Siphonaria maura with 64.78%; the infralittoral layer presented a normal diversity and abundance, while the supralittoral layer showed a low diversity and abundance.
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SIPHONARIA MAURA, ECHINOLITTORINA PAYTENSIS, COMUNIDADES MACROBENTÓNICAS, BALLENITA, AYANGUE