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dc.contributor.authorChaneton, E. J.
dc.contributor.authorLavado, R. S.
dc.date.accessioned2020-09-23T18:10:06Z
dc.date.available2020-09-23T18:10:06Z
dc.date.issued1996-03-01
dc.identifier.citationChaneton, E. J., & Lavado, R. S. (1996). Soil nutrients and salinity after long-term grazing exclusion in a flooding Pampa grassland. Journal of Range Management, 49(2), 182-187.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/4002692
dc.identifier.urihttp://hdl.handle.net/10150/644329
dc.description.abstractSoil organic C, total N, extractable P, and salinity were evaluated after 12-16 years of protection from grazing in 2 native grassland sites which differed in frequency of soil waterlogging in the Flooding Pampa of Argentina. We tested the hypothesis that flooding regime would affect the impact of grazing on soil chemical properties. We sampled soil to 10-cm depth in adjacent grazed and ungrazed plots in each site, and assessed the percentage dissimilarity (PD) in vegetation composition among pastures. Grazing condition significantly interacted with site (p<0.001) in affecting topsoil C, N, and salinity. Soil C and N were higher in grazed grassland (C = 4.8%; N = 0.42%) than in long-term exclosure (C = 3.7%; N = 0.35%) for the more frequently flooded, lowland site, hut did not vary between grassland plots in the upland site (C = 3.1%; N = 0.29%). Soil electrical conductivity (E.C.) was low in both ungrazed plots (< 2 dS/m), yet in grazed condition salinization was higher in the upland (E.C.= 6.85 dS/m) than in the lowland site (3.88 dS/m). Soil extractable P did not change in any consistent way with grazing treatment. Grazing apparently amplified differences in soil chemistry between lowland and upland sites, while differences in botanical composition between topographical positions were smaller for grazed (PD = 44 %) than for ungrazed (64 %) grassland. Moreover, contrasting responses between sites occurred for various soil parameters, whereas compositional differences between grazed and ungrazed plots were similar in each site (PD = 65%). Thus, soil-vegetation changes in response to grazing appeared to be loosely coupled in this rangeland ecosystem
dc.language.isoen
dc.publisherSociety for Range Management
dc.relation.urlhttps://rangelands.org/
dc.rightsCopyright © Society for Range Management.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectflood meadows
dc.subjectsubmergence
dc.subjectinorganic phosphorus
dc.subjectsoil organic matter
dc.subjectelectrical conductivity
dc.subjectsite factors
dc.subjectratios
dc.subjectgrasslands
dc.subjectsoil salinity
dc.subjectsoil fertility
dc.subjectforbs
dc.subjectgrazing intensity
dc.subjectplant communities
dc.subjectsoil chemistry
dc.subjectArgentina
dc.subjectbotanical composition
dc.subjectgrasses
dc.titleSoil nutrients and salinity after long-term grazing exclusion in a flooding Pampa grassland
dc.typetext
dc.typeArticle
dc.identifier.journalJournal of Range Management
dc.description.collectioninformationThe Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform August 2020
dc.source.volume49
dc.source.issue2
dc.source.beginpage182-187
refterms.dateFOA2020-09-23T18:10:06Z


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