Comment on "Solute-specific scaling of inorganic nitrogen and phosphorus uptake in streams" by Hall et al. (2013)

[摘要] Hall et al. (2013) presented a synthesis on 969 nutrient tracer experimentsconducted primarily in headwater streams (generally < fourth-orderstreams), with discharges < 200 L s⁻¹ for ~90 % ofthe experiments, and used a scaling method to test the hypothesis thatnutrient demand is constant with increasing stream size (i.e., along a rivercontinuum). In this comment we present a reanalysis of a subset of the dataused by Hall et al. (2013) and propose that their correlations betweennutrient uptake lengths of ecologically important solutes and specificdischarge are inadvertently spurious. Therefore, the conclusions derivedfrom such correlations are debatable. We conclude the comment by highlightingsome of the uncertainties associated with using modeling frameworks forscaling nutrient uptake in stream ecosystems.

[学科分类] 地球化学与岩石