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Macroinvertebrate communities and streambed substrates of a dammed stream in Monteverde, Costa Rica

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Material Information

Title:
Macroinvertebrate communities and streambed substrates of a dammed stream in Monteverde, Costa Rica
Translated Title:
Comunidades de macroinvertebrados y sustratos del cauce de una Quebrada en Monteverde, Costa Rica ( )
Physical Description:
Book
Language:
English
Creator:
Rancourt, John, Robert
Publication Date:

Subjects

Subjects / Keywords:
Benthic animals   ( lcsh )
Invertebrates   ( lcsh )
Dams   ( lcsh )
Costa Rica--Puntarenas--Monteverde Zone   ( lcsh )
Animales bentónicos
Invertebrados
Presas
Costa Rica--Puntarenas--Zona de Monteverde
Tropical Ecology Fall 2004
Ecología Tropical Otoño 2004
Genre:
Reports   ( lcsh )
Reports

Notes

Abstract:
The purpose of this study was to determine how the dam placed in the Quebrada Máquina, Monteverde, Costa Rica, affects the abundance, richness, and diversity of benthic macroinvertebrate communities. Samples were collected from 20 sites, 50m upstream and downstream of the dam. The relative percentage of streambed substrate composition was also documented at all test sites. There were significant decreases in Order richness and diversity as absolute distance from the dam decreased. In addition, the substrate composition was found to be homogeneous for sand directly upstream of the dam. This leads to the conclusion that the dam has created a buildup of sand, thereby decreasing richness and diversity, by means of destroying suitable habitat.
Abstract:
El propósito de este proyecto fue estudiar como el dique en la Quebrada Maquina, en Monteverde, Costa Rica, afecta la abundancia, la riqueza y la diversidad de los macroinvertebrados bénticos. Se colectaron muestras en 20 lugares 50 m arriba y debajo del dique. Los sustratos de los lugares fueron documentados. Se encontraron reducciones significativas en la riqueza y la diversidad conforme la distancia absoluta del dique decrecía. Además, la composición de los sustratos fue homogénea para la arena inmediatamente arriba del dique. Esto lleva a la conclusión de que el dique crea una acumulación de arena, que disminuye la riqueza y la diversidad, destruyendo así el hábitat disponible.
Language:
Text in English.
General Note:
Born Digital

Record Information

Source Institution:
University of South Florida Library
Holding Location:
University of South Florida
Rights Management:
All applicable rights reserved by the source institution and holding location.
Resource Identifier:
usfldc doi - M39-00381
usfldc handle - m39.381
System ID:
SFS0001550:00001


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Full Text
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Comunidades de macroinvertebrados y sustratos del cauce de una Quebrada en Monteverde, Costa Rica
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Macroinvertebrate communities and streambed substrates of a dammed stream in Monteverde, Costa Rica
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The purpose of this study was to determine how the dam placed in the Quebrada Mquina, Monteverde, Costa Rica, affects the abundance, richness, and diversity of benthic macroinvertebrate communities. Samples were collected from 20 sites, 50m upstream and downstream of the dam. The relative percentage of streambed substrate composition was also documented at all test sites. There were significant decreases in Order richness and diversity as absolute distance from the dam decreased. In addition, the substrate composition was found to be homogeneous for sand directly upstream of the dam. This leads to the conclusion that the dam has created a buildup of sand, thereby decreasing richness and diversity, by means of destroying suitable habitat.
El propsito de este proyecto fue estudiar como el dique en la Quebrada Maquina, en Monteverde, Costa Rica, afecta la abundancia, la riqueza y la diversidad de los macroinvertebrados bnticos. Se colectaron muestras en 20 lugares 50 m arriba y debajo del dique. Los sustratos de los lugares fueron documentados. Se encontraron reducciones significativas en la riqueza y la diversidad conforme la distancia absoluta del dique decreca. Adems, la composicin de los sustratos fue homognea para la arena inmediatamente arriba del dique. Esto lleva a la conclusin de que el dique crea una acumulacin de arena, que disminuye la riqueza y la diversidad, destruyendo as el hbitat disponible.
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Text in English.
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Benthic animals
Invertebrates
Dams
Costa Rica--Puntarenas--Monteverde Zone
4
Animales bentnicos
Invertebrados
Presas
Costa Rica--Puntarenas--Zona de Monteverde
653
Tropical Ecology Fall 2004
Ecologa Tropical Otoo 2004
655
Reports
720
CIEE
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t Monteverde Institute : Tropical Ecology
856
u http://digital.lib.usf.edu/?m39.381



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