NUTRIENT COMPETITION EXPERIMENTS WITH PERIPHYTON FROM THE BALTIC SEA

Authors
Citation
U. Sommer, NUTRIENT COMPETITION EXPERIMENTS WITH PERIPHYTON FROM THE BALTIC SEA, Marine ecology. Progress series, 140(1-3), 1996, pp. 161-167
Citations number
22
Categorie Soggetti
Marine & Freshwater Biology",Ecology
ISSN journal
01718630
Volume
140
Issue
1-3
Year of publication
1996
Pages
161 - 167
Database
ISI
SICI code
0171-8630(1996)140:1-3<161:NCEWPF>2.0.ZU;2-U
Abstract
Nutrient competition experiments were performed with periphytic microa lgae from the Kiel Fjord, western Baltic Sea. Diatoms were dominant co mpetitors al high Si:N ratios (under N-limited conditions) and high Si :P ratios (under P-Limited conditions). Under low silicate supply, cya nobacteria became dominant at low N:P ratios and chlorophytes at high ones. Changes in Light intensity influenced the outcome of competition at the species level but not at the level of higher taxa. The nitroge n source (ammonium or nitrate) had no impact on the outcome of competi tion.