Nitrogen and Phosphorus Removal by Periphyton from Agricultural Wastes in Artificial Streams

Autor:	Alejandro Jorge Mariñelarena, Hugo Daniel Di Giorgi
Rok vydání:	2001
Předmět:	business.industry Chemistry Ecology Phosphorus Biomass chemistry.chemical_element STREAMS Aquatic Science Nitrogen Nutrient Agriculture Environmental chemistry Periphyton business Ecology Evolution Behavior and Systematics Biotic communities
Zdroj:	Journal of Freshwater Ecology. 16:347-353
ISSN:	2156-6941 0270-5060
DOI:	10.1080/02705060.2001.9663822
Popis:	Dissolved nutrient concentrations were rapidly reduced in slow moving waters by the periphyton growing in shallow experimental streams. Nutrients added after an initial decrease were removed at a faster rate by the well developed periphyton community. Biomass of 36.2 g DW.m−2, 23.7 g AFDW.M−2 and 100 mg Chl.m−2 grew in a high phosphorous loaded stream, while 31.7 g DW.m−2, 16.6 g AFDW.m−2 and 42 mg Chl.m−2 were determined in a low loaded stream. The two different nutrient concentrations also generated quite different qualitatively biotic communities from identical origin. Stigeoclonium tenue dominated in both systems, but Cyclotella spp., Epithemia spp., and Synedra spp. occurred in different proportions. Nutrient uptakes of 83 mg P.m−2 .d−1 and 203 mg N.m−2 .d−1 were calculated based on concentration reduction. Light, temperature, and pH levels in the semi-natural greenhouse environment suggested little effect upon the periphyton community uptake of nutrients.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::584500db71a58a439aa4e899263875f1 https://doi.org/10.1080/02705060.2001.9663822 Zobrazit plný text záznamu