Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Size-fractionated alkaline phosphatase activity in the hypereutrophic Villerest reservoir (Roanne, France)
Autore:
Jamet, D; Amblard, C; Devaux, J;
Indirizzi:
Univ Toulon & Var, Dept Genie Biol, Lab Echanges Particulairs Interfaces, UPRES 1723, F-83957 La Garde, France Univ Toulon & Var La Garde France F-83957 1723, F-83957 La Garde, France Univ Blaise Pascal, Lab Zool & Protistol, Aubiere, France Univ Blaise Pascal Aubiere France Lab Zool & Protistol, Aubiere, France
Titolo Testata:
WATER ENVIRONMENT RESEARCH
fascicolo: 2, volume: 73, anno: 2001,
pagine: 132 - 141
SICI:
1061-4303(200103/04)73:2<132:SAPAIT>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
EUTROPHIC LAKE; PHOSPHORUS-DEFICIENCY; PHYTOPLANKTON; BACTERIA; ALGAL;
Keywords:
reservoir; microalgae; alkaline phosphatase activity; seasonal changes;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Engineering, Computing & Technology
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Jamet, D Univ Toulon & Var, Dept Genie Biol, Lab Echanges Particulairs Interfaces, UPRES 1723, BP 132, F-83957 La Garde, France Univ Toulon & Var BP 132 La Garde France F-83957 a Garde, France
Citazione:
D. Jamet et al., "Size-fractionated alkaline phosphatase activity in the hypereutrophic Villerest reservoir (Roanne, France)", WAT ENV RES, 73(2), 2001, pp. 132-141

Abstract

Seasonal changes in size-fractionated alkaline phosphatase activity (APA) were studied in the hypereutrophic Villerest reservoir (Roanne, France) to determine whether the APA showed seasonal variations coupled to abiotic andbiotic variables. Samples were collected at different depths from November1992 to October 1993. The phosphatase activities were measured spectrophotometrically with p-nitrophenyl phosphate as the substrate and related to protein concentrations. No correlations were found between APA and soluble reactive phosphorus concentrations during an annual cycle. Free phosphatases were particularly high in the epilimnion (54.5% of total activity was at 5 m) and decreased with depth (4% of total APA at 40 m). The contribution of small microorganisms to APA increased with depth. It was concluded that APAis not a valid quantitative test of the phosphorus status of aquatic microorganisms.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 13:03:11