Long-term fertilization increases soil but not plant or microbial N in a Chihuahuan Desert grassland
Violeta Mendoza-Martinez,
Scott L. Collins,
Jennie R. McLaren
Abstract:Abstract. Although the negative consequences of increased nitrogen (N) supply for plant communities and soil chemistry are well known, most studies have focused on mesic grasslands, and the fate of added N in arid and semi-arid ecosystems remains unclear. To study the impacts of long-term increased N deposition on ecosystem N pools, we sampled a 26-year-long fertilization (10 g N m−2 yr−1) experiment in the northern Chihuahuan Desert at the Sevilleta National Wildlife Refuge (SNWR) in New Mexico. To determine … Show more
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