Effects of phosphorus loading on interactions of algae and bacteria: reinvestigation of the 'phytoplankton–bacteria paradox' in a continuous cultivation system
1.
SYSNO ASEP
0025990
Druh ASEP
J - Článek v odborném periodiku
Zařazení RIV
J - Článek v odborném periodiku
Poddruh J
Ostatní články
Název
Effects of phosphorus loading on interactions of algae and bacteria: reinvestigation of the 'phytoplankton–bacteria paradox' in a continuous cultivation system
Překlad názvu
Vlivy různého zatížení fosforem na interakce řas a bakterií: přezkoumání “paradoxu fytoplankton–bakterie” v systému kontinuální kultivace
Tvůrce(i)
Mindl, B. (AT) Sonntag, B. (AT) Pernthaler, J. (DE) Vrba, Jaroslav (HBU-Z) Psenner, R. (AT) Posch, T. (AT)
Zdroj.dok.
Aquatic Microbial Ecology. - : Inter-Research
- ISSN 0948-3055
Roč. 38, č. 3 (2005), s. 203-213
The effect of different phosphorus loads (LP) on the phosphorus (P) and carbon (C) content of algae and bacteria was assessed in continuous culture. We tested if a mixed microbial assemblage co-cultured with Cryptomonas phaseolus would comply with the ‘phytoplankton–bacteria paradox’. At the level of a mixed microbial assemblage it is characterised by the following aspects: (1) bacteria profit from their high affinity to P and are better competitors at lower LP; (2) although algae compete with bacteria for P, P-limited algae release extracellular C that stimulates growth of their bacterial competitors; (3) when bacteria depend on algae as their sole source of organic C, this provides a feedback mechanism by which algae limit the abundance of their competitors at higher LP; (4) large oscillations in the bacteria–algae ratios at the lowest LP point to a greater instability of this interaction with stronger P competition.
Pracoviště
Hydrobiologický ústav (do r. 2005)
Kontakt
Václava Lavičková, lavickova@hbu.cas.cz, Tel.: 387 775 889
Rok sběru
2006
Počet záznamů: 1
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