Authors: J L Anthony W M Lewis
Publish Date: 2012/05/15
Volume: 74, Issue: 3, Pages: 611-617
Abstract
The effects of temperature diffusive boundarylayer thickness and sediment composition on fluxes of inorganic N and P were estimated for sediment cores with oxidized surfaces from nearshore waters 2–10 m of a montane oligotrophic lake Fluxes of N and P were not affected by diffusive boundarylayer thickness but were strongly affected by temperature Below 16 °C sediments sequestered small amounts of P and released small amounts of N Above 16 °C the seasonal maximum water temperature sediments were substantial sources of N NH4 +–N = 2–24 mg m−2 d−1 NO3 − + NO2 −–N = 2–5 mg m−2 d−1 and P 01–04 mg m−2 d−1 indicating potential responsiveness of sediment–water nutrient exchange and of corresponding phytoplankton growth to synoptic warming
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