August 19, 2024 Collins, S. & W. Pockman. 2020. Warming-El Nino-Nitrogen Deposition Experiment (WENNDEx): Soil Nitrogen Data from the Sevilleta National Wildlife Refuge, New Mexico (2006 – 2020) ver 2020071. Environmental Data Initiative. (Accessed 2025-06-10). Home » Collins, S. & W. Pockman. 2020. Warming-El Nino-Nitrogen Deposition Experiment (WENNDEx): Soil Nitrogen Data from the Sevilleta National Wildlife Refuge, New Mexico (2006 – 2020) ver 2020071. Environmental Data Initiative. (Accessed 2025-06-10).