Title
Evolution of the structural integrity of lotic ecosystems in “piedemonte llanero” in response to antropogenic action
DOI
https://doi.org/10.15446/abc.v20n2.42307
Document Type
Article
Publication Date
1-1-2015
Publication Title
Acta Biologica Colombiana
Abstract
From 1993 to 2007, was analyzed the evolution of the ecological integrity of two streams in the “piedmont” of Meta, the “caños” Mateguadua and Caibe near to Cumaral and Restrepo districts. The parameters analyzed were landscape evolution, physicochemical variables trends, quality and supply of aquatic habitats and the structural organization of fish communities. Landscape quality declined during the sampling period due to deforestation of gallery forests in both streams. Soil erosion process threw considerable amount of solids particles to streams, causing siltation in the bed of both streams. In fact, this condition affected depth patterns and spatial heterogeneity of aquatic habitats. Fish community structure showed changes in response to environmental degradation, such as the progressive replacement of insectivorous species by phytophagous and algivorous species and the dominance of populations of Hemigrammus barrigonae, a species that prospered on gradual progress of colonies of microalgae and macrophytes in the water due to the riparian forest fragmentation.
Volume
20
Issue
2
First Page
133
Last Page
144
ISSN
0120548X
Recommended Citation
Briceño Vanegas, Guillermo, "Evolution of the structural integrity of lotic ecosystems in “piedemonte llanero” in response to antropogenic action" (2015). Scopus Unisalle. 437.
https://ciencia.lasalle.edu.co/scopus_unisalle/437
Identifier
SCOPUS_ID:84928664034