Show simple item record Vivanco, Lucía Irvine, Irina C. Martiny, Jennifer B. H. 2017-06-05T14:47:33Z 2015-04
dc.identifier.citation Vivanco, Lucía; Irvine, Irina C.; Martiny, Jennifer B. H.; Nonlinear responses in salt marsh functioning to increased nitrogen addition; Ecological Society Of America; Ecology; 96; 4; 4-2015; 936-947
dc.identifier.issn 0012-9658
dc.description.abstract Salt marshes provide storm protection to shorelines, sequester carbon (C), and mitigate coastal eutrophication. These valuable coastal ecosystems are confronted with increasing nitrogen (N) inputs from anthropogenic sources, such as agricultural runoff, wastewater, and atmospheric deposition. To inform predictions of salt marsh functioning and sustainability in the future, we characterized the response of a variety of plant, microbial, and sediment responses to a seven-level gradient of N addition in three Californian salt marshes after 7 and 14 months of N addition. The marshes showed variable responses to the experimental N gradient that can be grouped as neutral (root biomass, sediment respiration, potential carbon mineralization, and potential net nitrification), linear (increasing methane flux, decreasing potential net N mineralization, and increasing sediment inorganic N), and nonlinear (saturating aboveground plant biomass and leaf N content, and exponentially increasing sediment inorganic and organic N). The three salt marshes showed quantitative differences in most ecosystem properties and processes rates; however, the form of the response curves to N addition were generally consistent across the three marshes, indicating that the responses observed may be applicable to other marshes in the region. Only for sediment properties (inorganic and organic N pool) did the shape of the response differ significantly between marshes. Overall, the study suggests salt marshes are limited in their ability to sequester C and N with future increases in N, even without further losses in marsh area.
dc.format application/pdf
dc.language.iso eng
dc.publisher Ecological Society Of America
dc.rights info:eu-repo/semantics/restrictedAccess
dc.subject.classification Ecología
dc.subject.classification Ciencias Biológicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Nonlinear responses in salt marsh functioning to increased nitrogen addition
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion 2017-06-02T17:32:33Z
dc.journal.volume 96
dc.journal.number 4
dc.journal.pagination 936-947
dc.journal.pais Estados Unidos
dc.description.fil Fil: Vivanco, Lucía. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
dc.description.fil Fil: Irvine, Irina C.. National Park Service; Estados Unidos
dc.description.fil Fil: Martiny, Jennifer B. H.. University of California at Irvine; Estados Unidos
dc.journal.title Ecology
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/

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