Upper limits for road salt pollution in lakes
نویسندگان
چکیده
Widespread and increasing use of road deicing salt is a major driver lake chloride concentrations, which can negatively impact aquatic organisms ecosystems. We used simple model to explore the controls on concentrations predict equilibrium in lakes across contiguous United States. The suggests that concentration depends three quantities: application rate, density, runoff (precipitation minus evapotranspiration). High combined with high density leads regardless runoff. Yet if be held at current rates or reduced, many situated lightly moderately urbanized watersheds should equilibrate levels below currently recommended thresholds. In particular, our predicts that, given 2010–2015 rates, States will exceed regulatory chronic exposure threshold 230 mg L−1 over 2000 lakes; 120 9000 hundreds thousands lakes. Our analysis helps contextualize trends pollution lakes, stabilization thresholds designed protect an achievable goal.
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ژورنال
عنوان ژورنال: Limnology and oceanography letters
سال: 2023
ISSN: ['2378-2242']
DOI: https://doi.org/10.1002/lol2.10339