An in-depth and innovative study allowed them to understand the importance of those omnipresent periphytic
biofilms on denitrification.
The decreased percentage values of fresh-brackish periphytic
diatoms (mostly Fragilaria heidenii) in LDAZ CL-2 likely indicates lower transparency of the water column because of increased phytoplankton abundance (Karosiene & Paskauskas 2012).
Environmental variables that resulted significant were periphytic
Chl-a (P = 0.008) and DO (P = 0.04).
Sugar compound products of the periphytic
diatom Navicula ramosissima induce larval settlement in the barnacle, Amphibalanus amphilrite.
Grazers can be highly selective and thus may have a strong effect on the spatial pattern of the periphytic
Baetis is associated with macrophytes because they support periphytic
algae, which is food for the nymphs.
GROWNS, I., 1999.--Is genus or species identification of periphytic
diatoms required to determine the impacts of river regulation?
The primary producers collected included leaves from overhanging riparian terrestrial trees (Fagus sp.), periphytic
algae, and the dominant aquatic macrophytes (primarily watermilfoil Myriophyllum spicatum) that were present in both habitats.
A final treatment contained no snails, tadpoles, or water bugs to test for direct effects of grazers and indirect effects (trophic cascades) of water bugs on periphytic