"Extracellular phosphatases in a Mediterranean reservoir: seasonal, spatial and kinetic heterogeneity"@en . "Extracellular phosphatases in a Mediterranean reservoir: seasonal, spatial and kinetic heterogeneity"@en . "alkaline phosphatase; eutrophication; P limitation"@en . "Freshwater Biology" . "Extracelul\u00E1rn\u00ED fosfat\u00E1zy v mediter\u00E1nn\u00ED p\u0159ehradn\u00ED n\u00E1dr\u017Ei: sezonn\u00ED, prostorov\u00E1, a kinetick\u00E1 heterogenita"@cs . "0046-5070" . . "Extracellular phosphatases in a Mediterranean reservoir: seasonal, spatial and kinetic heterogeneity" . "Epilimnetic alkaline phosphatase activity (APA) was measured in longitudinal profiles of the canyon-shaped, eutrophic Sau Reservoir (Catalonia, Spain) in 1997\u20132000. During periods of stable stratification and high Chlorophyll a (Chl) concentration, APA was high and located mostly in the >2um size-fraction. APA increased towards the dam while concentration of soluble reactive phosphorus (SRP) decreased. In periods of unstable stratification and, deep mixing, and low Chl and SRP concentrations, APA was low and without longitudinal pattern. A high input of mostly dissolved (in the <0.2um size-fraction) phosphatases from the river Ter was found in 1997\u201398. Analysis of saturation kinetics revealed the kinetic heterogeneity of APA. Low-affinity APA was localised in the >2um (algal) size-fraction while, in the <2um (picoplankton, mainly bacteria + dissolved) size-fraction, high-affinity APA, or a mixture of both, was found." . . "13"^^ . "Extracellular phosphatases in a Mediterranean reservoir: seasonal, spatial and kinetic heterogeneity" . "P(GA206/99/0028), V, Z(AV0Z60170517)" . . "Epilimnetic alkaline phosphatase activity (APA) was measured in longitudinal profiles of the canyon-shaped, eutrophic Sau Reservoir (Catalonia, Spain) in 1997\u20132000. During periods of stable stratification and high Chlorophyll a (Chl) concentration, APA was high and located mostly in the >2um size-fraction. APA increased towards the dam while concentration of soluble reactive phosphorus (SRP) decreased. In periods of unstable stratification and, deep mixing, and low Chl and SRP concentrations, APA was low and without longitudinal pattern. A high input of mostly dissolved (in the <0.2um size-fraction) phosphatases from the river Ter was found in 1997\u201398. Analysis of saturation kinetics revealed the kinetic heterogeneity of APA. Low-affinity APA was localised in the >2um (algal) size-fraction while, in the <2um (picoplankton, mainly bacteria + dissolved) size-fraction, high-affinity APA, or a mixture of both, was found."@en . "2"^^ . . . "1264;1276" . "RIV/60077344:_____/06:00042951" . . . . . "5"^^ . "Extracelul\u00E1rn\u00ED fosfat\u00E1zy v mediter\u00E1nn\u00ED p\u0159ehradn\u00ED n\u00E1dr\u017Ei: sezonn\u00ED, prostorov\u00E1, a kinetick\u00E1 heterogenita"@cs . "V letech 1997-2000 byla m\u011B\u0159ena aktivita extracelul\u00E1rn\u00ED alkalick\u00E9 fosfat\u00E1zy (APA) v pod\u00E9ln\u00FDch profilech ka\u0148onovit\u00E9 p\u0159ehradn\u00ED n\u00E1dr\u017Ee Sau v Katal\u00E1nsku (\u0160pan\u011Blsko). V obdob\u00EDch stabiln\u00ED stratifikace, vysok\u00E9 kontrace chlorofylu a n\u00EDzk\u00E9 koncentrace reaktivn\u00EDho fosforu, byla APA vysok\u00E1, lokalizovan\u00E1 v \u0159asov\u00E9 velikostn\u00ED frakci (>2um), a zvy\u0161ovala se sm\u011Brem od p\u0159\u00EDtoku ke hr\u00E1zi. V obdob\u00EDch nestabiln\u00ED stratifikace a hlubok\u00E9ho m\u00EDch\u00E1n\u00ED byla APA n\u00EDzk\u00E1 a bez pod\u00E9ln\u00E9ho trendu, zat\u00EDmco koncentrace Chl a SRP byly vysok\u00E9. Anal\u00FDza satura\u010Dn\u00ED kinetiky odhalila kinetickou heterogenitu enzymu, n\u00EDzkoafinn\u00ED APA byla lokalizov\u00E1na sp\u00ED\u0161e v \u0159asov\u00E9 velikostn\u00ED frakci, zat\u00EDmco vysokoafinn\u00ED ve frakci bakteri\u00ED a pikosinic."@cs . . . . . . "51" . "Garc\u00EDa, J. C." . "7" . . . "\u0160imek, Karel" . "[667F5729BDB4]" . . . "475384" . "Armengol, J." . "GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . . "Comerma, M." . "Nedoma, Ji\u0159\u00ED" . "RIV/60077344:_____/06:00042951!RIV07-AV0-60077344" .