Distribución de la comunidad de macroinvertebrados bentónicos en arroyos tropicales de diferentes órdenes en el noreste de Brasil

Distribución de la comunidad de macroinvertebrados bentónicos en arroyos tropicales de diferentes órdenes en el noreste de Brasil

Jessica F. Gomes Pio, Tiago da Silva Pereira, Adolfo R. Calor, Carlos E. Copatti


Se seleccionaron arroyos localizados en el noreste de Brasil con el objetivo de evaluar el efecto de arroyos de diferente orden (1°, 2° y 3r) sobre la composición y la distribución de macroinvertebrados bentónicos durante las estaciones seca y lluviosa. Se obtuvo un total de 12822 individuos y 62 taxones de macroinvertebrados bentónicos, entre los cuales Chironomidae fue el taxón con mayor número de individuos. La distribución de este grupo de macroinvertebrados bentónicos demostró que los arroyos de 3r orden tienen una estructura de comunidad diferente en comparación a los arroyos de 1° y 2° orden. Esta distribución parecería ser el resultado de la sustitución de los taxones. La estructura de la comunidad de macroinvertebrados bentónicos estuvo correlacionada con las variables ambientales. En conclusión, la variación de las características ambientales de acuerdo con el orden del arroyo fue el factor más importante en la organización de la comunidad de macroinvertebrados bentónicos y la sustitución de los taxones en los arroyos investigados.



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