Nutrient enrichment in Western Europe is an important cause of wetland deterioration and the concomitant loss of biodiversity. The authors quantified nitrogen, phosphorus, and potassium budgets along biomass gradients in wet meadows and fens (44 field sites) to evaluate the importance of various nutrient flows (atmospheric deposition, flooding, groundwater flow, leaching, soil turnover rates) for availability of the growth-limiting nutrient(s). From the nutrient budgets, they assessed N, P, and K availabilities for plants and compared them with N, P and K in aboveground biomass. Also, potential long-term effects of annual hay harvesting on nutrient limitation were assessed
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