Journal of Tropical Ecology (2008) 24:505–515.
Copyright © 2008 Cambridge University Press
doi:10.
1017/S0266467408005294 Printed in the United Kingdom
Geological differentiation explains diversity and composition of fish
communities in upland streams in...
More
Journal of Tropical Ecology (2008) 24:505–515.
Copyright © 2008 Cambridge University Press
doi:10.
1017/S0266467408005294 Printed in the United Kingdom
Geological differentiation explains diversity and composition of fish
communities in upland streams in the southern Amazon of Colombia
Fernando Arbel´aez, Joost F.
Duivenvoorden1
and Javier A.
Maldonado-Ocampo
Institute for Biodiversity and Ecosystem Dynamics (IBED), Universiteit van Amsterdam, Kruislaan 318, 1098 SM Amsterdam, The Netherlands
Programa Inventarios de Biodiversidad, Instituto Alexander von Humboldt, Villa de Leyva, Boyac´a, Colombia
(Accepted 22 July 2008)
Abstract: Fish biomass, species richness and composition were compared between upland streams draining two
contrasting geological units (Pebas and Tsa) in Colombian Amazonia.
Because Pebas sediments reportedly show
higher levels of base concentrations than Tsa sediments, we expected that the fish communities from the Pebas streams
wouldshowhighestbiomassandspeciesric
Less
