Effects of backpacker use, pack stock trail use, and pack stock grazing on water-quality indicators, including nutrients, E-coli, hormones and pharmaceuticals, in Yosemite National Park, USA
Effects of backpacker use, pack stock trail use, and pack stock grazing on water-quality indicators, including nutrients, E-coli, hormones and pharmaceuticals, in Yosemite National Park, USA
Aug 23, 2025