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Titolo:
Differential sensitivity to natural ultraviolet radiation among phytoplankton species in Arctic lakes (Spitsbergen, Norway)
Autore:
van Donk, E; Faafeng, BA; de Lange, HJ; Hessen, DO;
Indirizzi:
NIVA, N-0411 Oslo, Norway NIVA Oslo Norway N-0411NIVA, N-0411 Oslo, Norway NIOO, Ctr Limnol, NL-3631 AC Nieuwersluis, Netherlands NIOO NieuwersluisNetherlands NL-3631 AC 31 AC Nieuwersluis, Netherlands Lehigh Univ, Dept Earth & Environm Sci, Bethlehem, PA 18015 USA Lehigh Univ Bethlehem PA USA 18015 Environm Sci, Bethlehem, PA 18015 USA Univ Oslo, Inst Biol, N-0316 Oslo, Norway Univ Oslo Oslo Norway N-0316Univ Oslo, Inst Biol, N-0316 Oslo, Norway
Titolo Testata:
PLANT ECOLOGY
fascicolo: 1-2, volume: 154, anno: 2001,
pagine: 247 -
SICI:
1385-0237(200106)154:1-2<247:DSTNUR>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
UV-B RADIATION; OZONE DEPLETION; CHLAMYDOMONAS-REINHARDTII; COMMUNITY RESPONSES; SOLAR UVB; INHIBITION; GROWTH; ASSEMBLAGES; ALGAE; ZOOPLANKTON;
Keywords:
cell size; cyanobacteria; daphnids; foodweb; grazers; inedible algae; Svalbard; UV-B;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
48
Recensione:
Indirizzi per estratti:
Indirizzo: van Donk, E NIOO, Ctr Limnol, Rijkstr Weg 6, NL-3631 AC Nieuwersluis, Netherlands NIOO Rijkstr Weg 6 Nieuwersluis Netherlands NL-3631 AC rlands
Citazione:
E. van Donk et al., "Differential sensitivity to natural ultraviolet radiation among phytoplankton species in Arctic lakes (Spitsbergen, Norway)", PLANT ECOL, 154(1-2), 2001, pp. 247

Abstract

Incubation experiments demonstrated a differential sensitivity to natural UV-radiation among the dominant phytoplankton species from three Arctic lakes, situated near Ny-Angstrom lesund, Spitsbergen (79 degrees N). The growth of small chlorophytes, diatoms and picocyanobacteria from two oligotrophic lakes was inhibited primarily by the shorter wavelength UV components, while the growth of the larger colony-forming species (cyanobacteria, Planktothrix sp., Woronichinia sp. and the chrysophyte, Uroglena americana Calkins) apparently was stimulated. These colonies (not easily eaten by daphnids) dominated at the end of the experiment in those treatments where the short wavelength UV components were not excluded. For the two oligotrophic localities, 70 and 61%, respectively, of total phytoplankton biovolume were edible in the treatments excluding short wavelength UV, compared to only 13 and 19%, respectively, in the treatments including such radiation. For the third, more productive and less transparent lake, the percentage of edible species in the treatments with and without short wavelength UV radiation did not differ (ca. 75% for both treatments).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 11:48:30