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dc.contributor.authorBeeskow, A. M.
dc.contributor.authorEllisalde, N. O.
dc.contributor.authorRostagno, C. M.
dc.date.accessioned2020-09-23T17:46:59Z
dc.date.available2020-09-23T17:46:59Z
dc.date.issued1995-11-01
dc.identifier.citationBeeskow, A. M., Ellisalde, N. O., & Rostagno, C. M. (1995). Ecosystem changes associated with grazing intensity on the Punta Ninfas rangelands of Patagonia, Argentina. Journal of Range Management, 48(6), 517-522.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/4003063
dc.identifier.urihttp://hdl.handle.net/10150/644232
dc.description.abstractChanges in the vegetation and soil surface were assessed along a grazing intensity gradient on rangelands of the Punta Ninfas area in southern Argentina. Thirty-two transects were sampled in areas with different grazing intensity. Bray-Curtis polar ordination and simple correlation were used to display changes in community composition and measure association between different community attributes. The first axis expressed the changes in species composition along a gradient of grazing intensity. The extremes of the gradient were represented by shrub and grass steppes. Shrub steppes dominated in heavily grazed areas close to permanent water points, while grass steppes dominated in lightly grazed areas in the extremes of the paddocks. A significant negative relation (r = -0.81, P<0.05) between grass and shrub cover suggested that grasses decreased as shrub increased. Flechilla (Stipa tenuis Phil.) and fiechilla negra [Piptochaefirrm napostaense Speg.) Hackel ap Stuckert.] were the main decreaser grasses while quilembai (Chuquiruga avellanedue Cav.) was the main shrub invading the grass steppes. Uneroded soil surface conditions decreased, and the size and frequency of crusted and desert pavement areas and mounds increased with shrub cover. Three states or stages of range degradation were identified along the gradient of grazing intensity. Grass steppe represented the most desirable state in term of livestock production and soil stability, while shrub steppe represented the most degraded and least productive state.
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.subjectwoody weeds
dc.subjectindicator species
dc.subjectsoil types
dc.subjectsteppes
dc.subjectgrazing intensity
dc.subjectshrubs
dc.subjectsheep
dc.subjectovergrazing
dc.subjectbiomass
dc.subjectArgentina
dc.subjectbotanical composition
dc.subjectrangelands
dc.subjectcanopy
dc.subjectgrasses
dc.subjectforage
dc.titleEcosystem changes associated with grazing intensity on the Punta Ninfas rangelands of Patagonia, Argentina
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.volume48
dc.source.issue6
dc.source.beginpage517-522
refterms.dateFOA2020-09-23T17:47:00Z


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