image
image


Berrocal is just downstream of a bridge and is characterized by deep red water, localized anoxia, and dramatic concretions of river boulders cemented together with iron precipitates. While there is little obvious eukaryotic biomass in this area, in October 2002 there were conspicuous blooms of Euglena in the shallow waters along the shore. We have also seen green and colorless flagellates, lobose amoebae, and heliozoa. Site 1 is just downstream of the rapid section below the bridge, site 2 is underneath the bridge, and site 3 is downstream of the rapids after the river reverts to a calmer flow. Different fungal sequences, cercomonad, and ciliate sequences have been obtained from biofilms at this site.


image




image
Site 1
Site 1 is just downstream of the rapid section below the bridge.

image
Site 2
Site 2 is located underneath the bridge.

image
Site 3
site 3 is downstream of the rapids after the river reverts to a calmer flow. Different fungal sequences, cercomonad, and ciliate sequences have been obtained from biofilms at this site.
image


image