Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
NUTRIENT LIMITATION OF PHYTOPLANKTON BIOMASS OR GROWTH-RATE - AN EXPERIMENTAL APPROACH USING MARINE ENCLOSURES
Autore:
HEIN M; RIEMANN B;
Indirizzi:
UNIV COPENHAGEN,FRESHWATER BIOL LAB,HEISINGORSGADE 51 DK-3400 HILLEROD DENMARK INT AGCY 14C DETERMINAT,INST WATER QUAL DK-2970 HORSHOLM DENMARK
Titolo Testata:
Journal of experimental marine biology and ecology
fascicolo: 2, volume: 188, anno: 1995,
pagine: 167 - 180
SICI:
0022-0981(1995)188:2<167:NLOPBO>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
COASTAL-PLAIN ESTUARY; CHLOROPHYLL-A; CARBON; ENRICHMENT; WATERS; ECOSYSTEMS; CULTURES; BAY;
Keywords:
CARBON BIOMASS; ENCLOSURE EXPERIMENT; GROWTH RATES; NATURAL PHYTOPLANKTON POPULATION; NUTRIENT LIMITATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
33
Recensione:
Indirizzi per estratti:
Citazione:
M. Hein e B. Riemann, "NUTRIENT LIMITATION OF PHYTOPLANKTON BIOMASS OR GROWTH-RATE - AN EXPERIMENTAL APPROACH USING MARINE ENCLOSURES", Journal of experimental marine biology and ecology, 188(2), 1995, pp. 167-180

Abstract

The paradoxical limitation pattern of phytoplankton, i.e. the increase in carbon biomass in response to increased nutrient loading without an increased community growth rate, was examined using marine enclosures with and without addition of nutrients. The phytoplankton carbon biomass, determined from particulate carbon, chlorophyll a, and incorporation of C-14 into chlorophyll a, increased in enclosures added both nitrate and phosphate. Phytoplankton growth rates derived from primary production (uptake of C-14 into particulate carbon) and from rates of incorporation of C-14 into chlorophyll a and protein remained, however, unaltered after nutrient additions, indicating that increased cell volume induced by phytoplankton succession could be responsible for theincreased biomass without changing the relative growth rate. Though, no major changes were detected in the phytoplankton species composition in any enclosures, the population mean cell volume increased in enclosures enriched with both nitrogen and phosphate when compared to the control enclosure. The increased mean cell volume could explain the enhanced carbon biomass and the unchanged specific growth rates.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/01/21 alle ore 23:25:03