Journal
INTERNATIONAL REVIEW OF HYDROBIOLOGY
Volume 94, Issue 4, Pages 399-409Publisher
WILEY
DOI: 10.1002/iroh.200811154
Keywords
leaf decomposition; aquatic hyphomycetes; nutrient loading; transplant experiment
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We conducted a transplant experiment between two streams in NW Portugal impacted by agricultural runoff, mainly differing in phosphate concentration, to determine whether fungi on decomposing leaves would adapt to the new environment or would be replaced by fungi of the recipient stream. The most nutrient enriched stream had lower fungal diversity but faster leaf decomposition. Leaf transplantation did not alter fungal activity or species dominance. Multidimensional scaling ordination of fungal communities, from DNA fingerprint or conidial production, revealed that transplanted communities resembled more those of the original stream than the recipient stream. Results suggest that early fungal colonizers will determine the development and activity of fungal communities on decomposing leaves in streams impacted by agricultural practices.
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