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dc.contributor.authorBerger, A. L.
dc.contributor.authorGuiot, J.
dc.contributor.authorMathieu, L.
dc.contributor.authorMunaut, A. V.
dc.date.accessioned2012-12-12T20:31:50Z
dc.date.available2012-12-12T20:31:50Z
dc.date.issued1979
dc.identifier.citationBerger, A.L., Guiot, J., Mathieu, L., Munaut, A.V. 1979. Tree rings and climate in Morocco. Tree-Ring Bulletin 39:61-75.en_US
dc.identifier.issn0041-2198
dc.identifier.urihttp://hdl.handle.net/10150/260439
dc.description.abstractTwo sites located near Ketama in the Morocco Rif have been selected, on the basis of limiting climatic factors, in order to study the relationship between tree rings and climate. After the trend associated with biological factors related to increasing age has been removed and all variables have been standardized, some statistical parameters have been computed and a variance analysis has been performed. After the persistence has been eliminated, an original technique of multiple regression on the principal components and of selection of the most significant variables has been built. Twenty -four climatic variables have been used. The principal aim of this paper is to describe this original statistical technique of data analysis and to illustrate its power with dendroclimatological data in Morocco. For the temperate site located in low altitude (1280 m), among the most important variables, we have retained total monthly precipitation for August, mean temperature of January, April, and May of the current year and mean temperature of October of the previous year. For the cold site (2100 m), total monthly precipitation for September and temperatures of January and May of the current year and precipitation for October of the previous year definitely influence the growth rate of cedars.
dc.language.isoen_USen_US
dc.publisherTree-Ring Societyen_US
dc.relation.urlhttp://www.treeringsociety.orgen_US
dc.rightsCopyright © Tree-Ring Society. All rights reserved.en_US
dc.subjectDendrochronologyen_US
dc.subjectTree Ringsen_US
dc.subjectArid Zonesen_US
dc.subjectClimateen_US
dc.subjectClimatologyen_US
dc.subjectForestryen_US
dc.subjectPrecipitationen_US
dc.subjectTemperatureen_US
dc.titleTree-Rings and Climate in Moroccoen_US
dc.typeArticleen_US
dc.contributor.departmentInstitut d'Astronomie et de Géophysique, Université Catholique de Louvain-la-Neuveen_US
dc.contributor.departmentLaboratoire de Science du Sol, Faculté des Sciences Agronomiques, Gemblouxen_US
dc.contributor.departmentLaboratoire de Palynologie et Phytosociologie, Université Catholique de Louvain-la-Neuveen_US
dc.identifier.journalTree-Ring Bulletinen_US
dc.description.collectioninformationThis item is part of the Tree-Ring Research (formerly Tree-Ring Bulletin) archive. It was digitized from a physical copy provided by the Laboratory of Tree-Ring research at The University of Arizona. For more information about this peer-reviewed scholarly journal, please email the Editor of Tree-Ring Research at editor@treeringsociety.org.en_US
refterms.dateFOA2018-06-12T23:29:28Z
html.description.abstractTwo sites located near Ketama in the Morocco Rif have been selected, on the basis of limiting climatic factors, in order to study the relationship between tree rings and climate. After the trend associated with biological factors related to increasing age has been removed and all variables have been standardized, some statistical parameters have been computed and a variance analysis has been performed. After the persistence has been eliminated, an original technique of multiple regression on the principal components and of selection of the most significant variables has been built. Twenty -four climatic variables have been used. The principal aim of this paper is to describe this original statistical technique of data analysis and to illustrate its power with dendroclimatological data in Morocco. For the temperate site located in low altitude (1280 m), among the most important variables, we have retained total monthly precipitation for August, mean temperature of January, April, and May of the current year and mean temperature of October of the previous year. For the cold site (2100 m), total monthly precipitation for September and temperatures of January and May of the current year and precipitation for October of the previous year definitely influence the growth rate of cedars.


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