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BEsT MANAGEMENT PRACTICEs HANDbooK - Tahoe BMP

BEsT MANAGEMENT PRACTICEs HANDbooK - Tahoe BMP

BEsT MANAGEMENT PRACTICEs HANDbooK - Tahoe BMP

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5.3.2.1 FERTILIZERSLake <strong>Tahoe</strong> is naturally ultra-oligotrophic, meaning its waters are very low innutrients. This is responsible for the lake’s famed clarity. The region’s soilstend to be rocky and shallow, and are low in nutrients and organic matter.Lake <strong>Tahoe</strong> is naturally ultra-oligotrophic, which is responsible for the lake’s famed clarity.Lake clarity began to decline ashuman land uses in the regionaccelerated, contributingnutrients and sediment to thelake. The Lake <strong>Tahoe</strong> TotalDaily Maximum Load (TMDL)identified nutrients as primarypollutants of concern, withfertilizer application in urbanareas contributing a significantportion of phosphorus to thelake. Limiting fertilizerapplication reduces phosphorusat the source and plays animportant role in restoringLake <strong>Tahoe</strong>’s clarity.Nutrients such as fertilizers in Lake<strong>Tahoe</strong> provide food for algaegrowth, which reduces water clarityand changes the lake habitat foraquatic life.TRPA <strong>BMP</strong> HandbookCHAPTER 5: Soil and Vegetation Management2012 Page 5-9

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