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Aquatic Insect Assemblages in Shrimp‐dominated Tropical Streams, Puerto Rico
Author(s) -
Ramirez Alonso,
HernandezCruz Luz Raquel
Publication year - 2004
Publication title -
biotropica
Language(s) - Spanish
Resource type - Journals
SCImago Journal Rank - 0.813
H-Index - 96
eISSN - 1744-7429
pISSN - 0006-3606
DOI - 10.1111/j.1744-7429.2004.tb00317.x
Subject(s) - shrimp , aquatic insect , streams , forestry , geography , tropical rain forest , ecology , humanities , biology , habitat , rainforest , art , computer network , computer science
We examined the effects of shrimp on insects in Puerto Rico by assessing insect assemblages in streams relative to varying shrimp densities and also by manipulating shrimp presence. Insect assemblages were typical of tropical island streams and insects were found in all stream habitats. Shrimp impacted insects directly via predation and competition and indirectly through removing particles from the water column. Variation in shrimp distribution is likely to be an important factor determining insect‐assemblage structure in tropical streams. RESUMEN Examinamos los efectos de los camarones sobre los insectos en Puerto Rico, para ello estudiamos quebradas con densidades contrastantes de camarones y manipulamos su presencia. Los ensamblajes de insectos fueron tipicos de quebradas de islas tropicales y usaron todos los hábitats. Los camarones impactaron directamente a los insectos via depredacion y competencia e indirectamente al remover particulas del agua. Variacion en la distribución de camarones es un factor importante en determinar la estructura de los ensamblajes de insectos en las quebradas tropicales.