Monteverde Institute: Tropical Ecology and Conservation

Creator

James Dugan

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Publication Date

March 2003

Abstract

Detritivores play a crucial role in nutrient cycling within tropical forests by returning nutrients to the ecosystem. The purpose of this study was to inventory carrion feeding insect communities and show the change in insect diversity along an altitudinal gradient. Five sites were visited every 200m along the gradient from 800m to 1600m using carrion as bait to attract insects. A total of 1507 individuals were collected, representing 21 species. Six of the ten diversity comparisons using a variation of the Shannon- Weiner Diversity Index and modified t-tests were significantly different (p < 0.05). The number of individuals was found to decrease as elevation increased (simple regression, p = 0.0158, r2 = 0.01). It is believed that the lower elevations harbor a higher diversity and species richness due to unfavorable conditions at the higher elevations.

Resumen

Descomponedores tienen un lugar crucial en el ciclo de nutrientes en los bosques tropicales, devolviendo los nutrientes de nuevo al ecosistema. El propósito de este estudio fue hacer un inventario de las comunidades de insectos en animales descompuestos carrion y mostrar los cambios en la diversidad en un gradiente altitudinal. Cinco lugares fueron muestreados cada 200 metros en el gradiente de 800 metros a 1600 metros usando cebo del carrion para atraer insectos. Un total de 1507 individuales fueron recogidos para un total de 21 especies. Las se encontraron diferencia significante entre seis de los diez comparaciones de la diversidad a (p < 0.05) usando índice de diversidad de la Shannon-Weiner Diversity Index y una prueba de t para comparaba. El número de disminue al almientos elevación aumentó (p = 0.0158, r2 = 0.01). Se cree que las elevaciones más bajas tienen una riqueza mayor de la diversidad debido a un clima más cálido y más frío en las elevaciones superiores.

Extent

12 pages

Holding Location

Monteverde Institute

Language

English; Spanish

Media Type

Articles

Format

Digital Only

Identifier

M39-00132

Type

Book

Diversity and species breadth of carrion insect communities along an altitudinal gradient, March 2003

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