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Titolo:
Vertical niche separation of phytoplankton: large-scale mesocosm experiments
Autore:
Olli, K; Seppala, J;
Indirizzi:
Univ Tartu, Inst Bot & Ecoll, EE-51005 Tartu, Estonia Univ Tartu Tartu Estonia EE-51005 t Bot & Ecoll, EE-51005 Tartu, Estonia Woods Hole Oceanog Inst, Dept Biol, Woods Hole, MA 02543 USA Woods Hole Oceanog Inst Woods Hole MA USA 02543 Woods Hole, MA 02543 USA Finnish Environm Inst, Helsinki 00251, Finland Finnish Environm Inst Helsinki Finland 00251 st, Helsinki 00251, Finland
Titolo Testata:
MARINE ECOLOGY-PROGRESS SERIES
, volume: 217, anno: 2001,
pagine: 219 - 233
SICI:
0171-8630(2001)217:<219:VNSOPL>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
COASTAL BALTIC-SEA; MARINE-PHYTOPLANKTON; SPECIES COMPOSITION; WATER COLUMN; COMPETITION; LIGHT; MIGRATION; POPULATION; NUTRIENTS; BUOYANCY;
Keywords:
vertical distribution; niche separation; phytoplankton; co-existence;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Olli, K Univ Tartu, Inst Bot & Ecoll, Lai 40, EE-51005 Tartu, Estonia UnivTartu Lai 40 Tartu Estonia EE-51005 EE-51005 Tartu, Estonia
Citazione:
K. Olli e J. Seppala, "Vertical niche separation of phytoplankton: large-scale mesocosm experiments", MAR ECOL-PR, 217, 2001, pp. 219-233

Abstract

Vertical distribution patterns of Heterocapsa triquetra, Mesodinium rubrum, Aphani-zomenon sp., Anabaena lemmermannii, Monoraphidium contortum and chlorophyll a were analyzed in large-scale mesocosms extending throughout theeuphotic layer and manipulated with low and high levels of mineral nutrient additions. Using an ordination method, quantitative comparisons of the variability in the vertical distribution due to species differences, to experimental treatments, and to inter-annual variation were made. The inter-specific variance component was largest. The significance of inter-specific differences was verified by a randomization test. There was also significant inter-annual variability in the species- specific vertical distribution patterns, but the inter-annual effect was less pronounced than the differences between species. Differences in the nutrient loads to the mesocosm did not have significant effects on species-specific vertical distribution patterns. The results demonstrate that the vertical segregation patterns of phytoplankton are species specific and robust, not overly sensitive to changes in environmental conditions, but appear to be persistent biological phenomena,The implications of these findings to co-existence, competition, and diversity in the plankton are discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 17:38:31