Název:
The Effect of P Enrichment on Exudate Quantity and Bioavailability - a Comparison of Two Macrophyte Species
Autoři:
KUBEŠOVÁ, Jaroslava Typ dokumentu: Rigorózní práce
Rok:
2016
Jazyk:
eng
Abstrakt: A study on rhizodeposition rates and rhizodeposits bioavailability (microbial respiration, N mineralization and phosphatase activity) of two macrophyte species with different life strategies (stress-tolerator and competitor) was conducted. Research was carried out in tropical marshes of Belize; results from the field were supported by 13C partitioning mesocosm study. The stresstolerant Eleocharis spp. released more C from roots than Typha domingensis and this C was more biodegradable. The two species responded to P enrichment differently. While Eleocharisspp. invested more assimilated C to the belowground (roots, rhizomes and rhizodepositions) after P fertilization, in T. domingensis the belowground C investment decreased. The effect of plant species was larger than the effect of P enrichment. Eleocharis spp., adapted to growth under low nutrients, invests more carbon into exudation a promotion of its microbial communities in the rhizosphere while competitive T. domingensis spends more fixed C on its own growth and metabolism.
Klíčová slova:
Biological availability; C partitioning; Eutrophication; Herbaceous marshes; Mineralization; P limitation; Plant life strategy; Rhizodeposition/Exudation Citace: KUBEŠOVÁ, Jaroslava. The Effect of P Enrichment on Exudate Quantity and Bioavailability - a Comparison of Two Macrophyte Species. České Budějovice, 2016. rigorózní práce (RNDr.). JIHOČESKÁ UNIVERZITA V ČESKÝCH BUDĚJOVICÍCH. Přírodovědecká fakulta
Instituce: Jihočeská univerzita v Českých Budějovicích
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Plný text je dostupný v digitálním repozitáři JČU. Původní záznam: http://www.jcu.cz/vskp/49530