<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Nitrogen deposition alters nitrogen cycling and reduces soil carbon content in low-productivity semiarid Mediterranean ecosystems."^^ . "Anthropogenic N deposition poses a threat to European Mediterranean ecosystems. We combined data from an extant N deposition gradient (4.3–7.3 kg N ha−1 yr−1) from semiarid areas of Spain and a field experiment in central Spain to evaluate N deposition effects on soil fertility, function and cyanobacteria community. Soil organic N did not increase along the extant gradient. Nitrogen fixation decreased along existing and experimental N deposition gradients, a result possibly related to compositional shifts in soil cyanobacteria community. Net ammonification and nitrification (which dominated N-mineralization) were reduced and increased, respectively, by N fertilization, suggesting alterations in the N cycle. Soil organic C content, C:N ratios and the activity of β-glucosidase decreased along the extant gradient in most locations. Our results suggest that semiarid soils in low-productivity sites are unable to store additional N inputs, and that are also unable to mitigate increasing C emissions when experiencing increased N deposition."^^ . "2013-08" . . "179" . . "Environmental Pollution"^^ . . . "02697491" . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Mathew A."^^ . "Bowker"^^ . "Mathew A. Bowker"^^ . . "Mark Richard"^^ . "Theobald"^^ . "Mark Richard Theobald"^^ . . "Fernando T."^^ . "Maestre"^^ . "Fernando T. Maestre"^^ . . "Marta G."^^ . "Vivanco"^^ . "Marta G. Vivanco"^^ . . "Asuncion de los"^^ . "Rios"^^ . "Asuncion de los Rios"^^ . . "Raúl"^^ . "Ochoa Hueso"^^ . "Raúl Ochoa Hueso"^^ . . "Esteban"^^ . "Manrique"^^ . "Esteban Manrique"^^ . . "Sergio"^^ . "Valea"^^ . "Sergio Valea"^^ . . . . . . "Nitrogen deposition alters nitrogen cycling and reduces soil carbon content in low-productivity semiarid Mediterranean ecosystems. (PDF)"^^ . . . . . . "INVE_MEM_2013_160948.pdf"^^ . . . "Nitrogen deposition alters nitrogen cycling and reduces soil carbon content in low-productivity semiarid Mediterranean ecosystems. (Image (PNG))"^^ . . . . . "HTML Summary of #25901 \n\nNitrogen deposition alters nitrogen cycling and reduces soil carbon content in low-productivity semiarid Mediterranean ecosystems.\n\n" . "text/html" . . . "Química"@es . "Chemistry"@en . .