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Spontaneous restoration of wetlands on arable land.
VITTEK, Petr
Spontaneous restoration of wetlands on arable land was observed in the part of South Bohemia. The main aim of the study was to describe colonization of the newly formed wetlands by plants in relation to character of the site and its surroundings (age and size of the wetland, distance to the field margin and to a nearest permanent wetland). Data were collected during three seasons (2011, 2012 and 2013) and analyzed using linear regression and ordination analyses (DCA, CCA). There were found no significant effects of the distance from the permanent wetland and the distance to the edge of the field on species composition of the newly created wetlands, only some trends were obvious. The effect of successional age of wetlands on their species composition was significant. In general, it was shown that spontaneous restoration of wetlands on arable land is possible.
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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.
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