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Surface water nutrient concentrations and litter decomposition rates in wetlands impacted by agriculture and mining activities Lee, A.A.; Bukaveckas, P.A. (2002). Surface water nutrient concentrations and litter decomposition rates in wetlands impacted by agriculture and mining activities. Aquat. Bot. 74(4): 273-285. http://dx.doi.org/10.1016/s0304-3770(02)00128-6 In: Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam. ISSN 0304-3770; e-ISSN 1879-1522

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Beschikbaar in	Auteurs
VLIZ: Non-open access 56937 [ aanvragen ]

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Trefwoorden

Chemical elements > Nonmetals > Phosphorus Chemical reactions > Degradation Chemical reactions > Nitrogen fixation Cycles > Chemical cycles > Geochemical cycle > Biogeochemical cycle > Nutrient cycles Environmental factors > Anthropogenic factors Sediments USA, Kentucky Wastes > Solid impurities > Litter Water bodies > Inland waters > Wetlands Typha latifolia L. [WoRMS] Kentucky [Marine Regions] Zoet water

Author keywords

wetlands; decomposition; nitrogen; phosphorus; agriculture; mining

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Auteurs		Top
Lee, A.A. Bukaveckas, P.A., correspondent

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Abstract

Decomposition rates of a site-specific dominant litter, a standard litter (Typha latifolia), and cellulose were quantified in 10 western Kentucky wetlands using the litterbag technique. Short-term (60 and 42 days) incubations were conducted during fall 1998 and spring 1999. The effect of variable tissue nitrogen content on decomposition rates was evaluated by comparing mass loss among site-specific dominant species from each wetland. Effects of variable surface water and sediment nutrient concentrations on decomposition were assessed by measuring mass loss of standard litter materials (Typha latifolia and cellulose) of uniform C:N ratio. Decomposition of the site-specific dominant litter was significantly correlated with tissue C:N ratios and phosphorus concentrations in wetland waters and sediments. Water column and sediment phosphorus were also significant predictors of decomposition rates for the standard litter types. Nitrogen concentrations in surface waters were not significant predictors of decomposition for any of the substrates in either season. Wetlands impacted by mine drainage exhibited slower decomposition rates and lower nutrient levels in comparison to wetlands occurring in predominantly agricultural areas.

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