Tropical Ecology and Conservation [Monteverde Institute]

Creator

Victor J. Rini

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Publication Date

September 2002

Abstract

The use of living organisms to assess water quality is a century old approach (Cairns and Pratt 1993). Widespread use of this method of evaluation has been common in North America and Europe (Metcalf 1989), yet it has not been applied in the Tropics. Here I present a test and alternatives to Hilsenhoff’s (1977, 1982, 1987) methodology for assigning Family Biotic Index values (a measure of pollution tolerance) to macroinvertebrates in a tropical premontane moist/wet forest (Holdridge 1967). Samples of benthic macroinvertebrates were taken from seven streams in the Monteverde, Costa Rica area. Hilsenhoff’s methodology as well as two others are applied in constructing a preliminary formula for assigning FBI values according to a revised Water Quality Index (WQI) as originally provided by Mitchell and Stapp (1995) to tropical macroinvertebrates. The strongest correlation with abiotic WQI was with Hilsenhoff's methodology, suggesting this methodology is both applicable and most effective in assigning Family Biotic Index values for tropical ecosystems. El uso de los organismos para valorar la calidad de agua es un siglo el enfoque viejo (Cairns y Pratt 1993). El uso esparcido de este método de la evaluación ha sido común en la Norteamérica y Europa (Metcalf 1989), mas no se ha aplicado en los trópicos. Aquí presento una revisión de la metodología de Hilsenhoff (1977, 1982, 1987) a asignar el Índice de la Familia Biotic avalúa al macroinvertebrates en un premontane tropical húmedo/mojo el bosque (Holdridge 1967). Las muestras de macroinvertebrates de benthic fueron aceptadas siete quebradas en Monteverde, Costa Rica. La metodología de Hilsenhoff así como también dos otros son aplicados a construir una formula preliminar para asignar los valores de FBI según un Índice de la Calidad de Agua (WQI) revisado como originalmente proporcionado por Mitchell y Stapp (1995) al macroinvertebrates tropical. La correlación más fuerte entre WQI y la metodología de Hilsenhoff existe sugerir su metodología es ambos aplicable y muy efectivo en asignar los valores en ecosistemas tropicales.

Description

Student affiliation: Department of environmental studies, University of Colorado at Boulder Digitized by MVI

Holding Location

Monteverde Institute MVI

Identifier

M39-00112

An analysis of three methodologies in determining family biotic index (FBI) values for benthic macroinvertebrates in the tropics

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