title: Phytoplankton as bioindicator for waste stabilization ponds.
abstract: Waste stabilization ponds are an appropriate technology for domestic onsite wastewater treatment. It is a low-cost technology, requires low maintenance, is highly efficient, mostly natural and remarkably sustainable. In facultative ponds, the existence of an algal population is very important for the stability of the symbiotic relation with aerobic bacteria. The aim of this work is to determine the pattern of microalgae in the facultative and maturation ponds to obtain information for the operation and maintenance work. The important parameters for phytoplankton measured in this study are the organic load, temperature, light penetration, dissolved oxygen and nutrients. Methodology consists in: analysis of main water quality parameters, plankton taxonomic determination and abundance calculation related with the maintenance operations. Results show that cyanobacteria are present in under-loaded conditions and chlorophyceae are present when the pond is overloaded. Using this methodology over time we can obtain a year round pattern to use the phytoplankton as a bioindicator of the pond's conditions. Our conclusion is that the phytoplankton determination and density can be used to know the pond's performance and help the operation and maintenance tasks.
authors.affiliation: Interdisciplinary Ecology Group, Biology Department, University of Balearic Islands, Crta Valldemossa, km 7,5, 07122 Palma de Mallorca, Spain. caterina.am@gmail.com
authors.forename: Caterina
authors.initials: C
authors.lastname: Amengual-Morro
authors.forename: Gabriel
authors.initials: G
authors.lastname: Moyà Niell
authors.forename: Antoni
authors.initials: A
authors.lastname: Martínez-Taberner
mesh_terms: D001420:Bacteria, Aerobic; D001673:Biodegradation, Environmental; D000460:Chlorophyta; D000458:Cyanobacteria; D010839:Phytoplankton; D061005:Ponds / Q000382:microbiology; D013030:Spain; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000379:methods*; D060753:Water Quality