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	The Effect of P Enrichment on Exudate Quantity and Bioavailability - a Comparison of Two Macrophyte Species KUBEŠOVÁ, Jaroslava 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. Detailed record
	Effect of P Enrichment on Rhizodeposit Quantity and Bioavailability: a Comparison of Two Macrophyte Species KUBEŠOVÁ, Jaroslava A review on plant rhizodeposition, nutrient uptake and interactions with rhizosphere microbial community is presented. Based on reviewed findings, a study on rhizodeposition rates and rhizodeposits bioavailability of two macrophyte species with different life strategies (stress-tolerator and competitor) was conducted. The effects of P addition and sediment type on rhizodeposition and microbial activity were examined. Research was carried out in tropical marshes of Belize; results from field were supported by C partitioning mesocosm study. This project was supported by NSF # 0089211 and ME 912. Detailed record
	Plant Rhizodeposition and Rhizosphere Microflora: Their Relationship and Its Consequences in Wetlands KUBEŠOVÁ, Jaroslava Annotation: Plant and microbial relationships in the rhizosphere have been briefly reviewed. The research of tropical wetland ecosystem in northern Belize has been summarized. After that a synthesis of both parts results in the hypothesis of carbon, nitrogen and phosphorus flows between Eleocharis cellulosa, Typha domingensis and their rhizosphere. Detailed record

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