Ítem
Solo Metadatos

Woody vegetation dynamics in the tropical and subtropical Andes from 2001 to 2014: Satellite image interpretation and expert validation

Mostrar el registro sencillo de la publicación
dc.creatorAide, T. Mitchellspa
dc.creatorGrau, H. Ricardospa
dc.creatorGraesser, Jordanspa
dc.creatorAndrade?Nuñez, Maria Josespa
dc.creatorAráoz, Ezequielspa
dc.creatorBarros, Ana P.spa
dc.creatorCampos?Cerqueira, Marconispa
dc.creatorChacon?Moreno, Eulogiospa
dc.creatorCuesta, Franciscospa
dc.creatorEspinoza, Raulspa
dc.creatorPeralvo, Manuelspa
dc.creatorPolk, Molly H.spa
dc.creatorRueda, Ximenaspa
dc.creatorSánchez Andrade, Adrianaspa
dc.creatorYoung, Kenneth R.spa
dc.creatorZarbá, Lucíaspa
dc.creatorZimmerer, Karl S.spa
dc.date.accessioned2020-05-26T00:09:24Z
dc.date.available2020-05-26T00:09:24Z
dc.date.created2019spa
dc.description.abstractThe interactions between climate and land-use change are dictating the distribution of flora and fauna and reshuffling biotic community composition around the world. Tropical mountains are particularly sensitive because they often have a high human population density, a long history of agriculture, range-restricted species, and high-beta diversity due to a steep elevation gradient. Here we evaluated the change in distribution of woody vegetation in the tropical Andes of South America for the period 2001–2014. For the analyses we created annual land-cover/land-use maps using MODIS satellite data at 250 m pixel resolution, calculated the cover of woody vegetation (trees and shrubs) in 9,274 hexagons of 115.47 km 2 , and then determined if there was a statistically significant (p  and lt; 0.05) 14 year linear trend (positive—forest gain, negative—forest loss) within each hexagon. Of the 1,308 hexagons with significant trends, 36.6% (n = 479) lost forests and 63.4% (n = 829) gained forests. We estimated an overall net gain of ~500,000 ha in woody vegetation. Forest loss dominated the 1,000–1,499 m elevation zone and forest gain dominated above 1,500 m. The most important transitions were forest loss at lower elevations for pastures and croplands, forest gain in abandoned pastures and cropland in mid-elevation areas, and shrub encroachment into highland grasslands. Expert validation confirmed the observed trends, but some areas of apparent forest gain were associated with new shade coffee, pine, or eucalypt plantations. In addition, after controlling for elevation and country, forest gain was associated with a decline in the rural population. Although we document an overall gain in forest cover, the recent reversal of forest gains in Colombia demonstrates that these coupled natural-human systems are highly dynamic and there is an urgent need of a regional real-time land-use, biodiversity, and ecosystem services monitoring network. © 2019 The Authors. Global Change Biology Published by John Wiley and Sons Ltdeng
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.1111/gcb.14618
dc.identifier.issn13652486
dc.identifier.issn13541013
dc.identifier.urihttps://repository.urosario.edu.co/handle/10336/24159
dc.language.isoengspa
dc.publisherBlackwell Publishing Ltdspa
dc.relation.citationEndPage2126
dc.relation.citationIssueNo. 6
dc.relation.citationStartPage2112
dc.relation.citationTitleGlobal Change Biology
dc.relation.citationVolumeVol. 25
dc.relation.ispartofGlobal Change Biology, ISSN:13652486, 13541013, Vol.25, No.6 (2019); pp. 2112-2126spa
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85065473675&doi=10.1111%2fgcb.14618&partnerID=40&md5=6886f2fec1550a9fbde9344cf761cae3spa
dc.rights.accesRightsinfo:eu-repo/semantics/openAccess
dc.rights.accesoAbierto (Texto Completo)spa
dc.source.instnameinstname:Universidad del Rosariospa
dc.source.reponamereponame:Repositorio Institucional EdocURspa
dc.subject.keywordAgriculturespa
dc.subject.keywordForest dynamicsspa
dc.subject.keywordLand coverspa
dc.subject.keywordLand usespa
dc.subject.keywordModisspa
dc.subject.keywordRegenerationspa
dc.subject.keywordSatellite imageryspa
dc.subject.keywordVegetation dynamicsspa
dc.subject.keywordAndesspa
dc.subject.keywordColombiaspa
dc.subject.keywordBiodiversityspa
dc.subject.keywordColombiaspa
dc.subject.keywordEcosystemspa
dc.subject.keywordForestspa
dc.subject.keywordSatellite imageryspa
dc.subject.keywordSouth americaspa
dc.subject.keywordTreespa
dc.subject.keywordTropic climatespa
dc.subject.keywordValidation studyspa
dc.subject.keywordBiodiversityspa
dc.subject.keywordColombiaspa
dc.subject.keywordEcosystemspa
dc.subject.keywordForestsspa
dc.subject.keywordSatellite imageryspa
dc.subject.keywordSouth americaspa
dc.subject.keywordTreesspa
dc.subject.keywordTropical climatespa
dc.subject.keywordAgriculturespa
dc.subject.keywordCoupled natural human systemsspa
dc.subject.keywordExpert validationspa
dc.subject.keywordForest loss and regenerationspa
dc.subject.keywordModis satellite imageryspa
dc.titleWoody vegetation dynamics in the tropical and subtropical Andes from 2001 to 2014: Satellite image interpretation and expert validationspa
dc.typearticleeng
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dc.type.spaArtículospa
Archivos
Colecciones
Artículos