Search Results - "Gorgoso Varela, José Javier"

Evaluation of direct and indirect methods for modelling the joint distribution of tree diameter and height data with the bivariate Johnson’s SBB function to forest stands by Gorgoso-Varela, Jose Javier, Ogana, Friday Nwabueze, Alonso Ponce, Rafael

“…Aim of study: In this study, both the direct and indirect methods by conditional maximum likelihood (CML) and moments for fitting Johnson’s SBB were evaluated…”
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Comparing Johnson’s SBB, Weibull and Logit-Logistic bivariate distributions for modeling tree diameters and heights using copulas by Gorgoso-Varela, Jose Javier, García-Villabrille, Juan Daniel, Rojo-Alboreca, Alberto, Von Gadow, Klaus, Álvarez-González, Juan Gabriel

“…Aim of study: In this study we compare the accuracy of three bivariate distributions: Johnson’s SBB, Weibull-2P and LL-2P functions for characterizing the…”
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A comparison of estimation methods for fitting Weibull and Johnson’s SB functions to pedunculate oak (Quercus robur) and birch (Betula pubescens) stands in northwest Spain by Rojo Alboreca, Alberto, Gorgoso Varela, José Javier

“…Aim of study: In this study we compared the accuracy of the Weibull and the Johnson’s SB functions for describing diameter distributions in pedunculate oak…”
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Modelling joint distribution of tree diameter and height using Frank and Plackett copulas by Ogana, Friday Nwabueze, Gorgoso-Varela, Jose Javier, Osho, Johnson Sunday Ajose

“…Bivariate distribution models are veritable tools for improving forest stand volume estimations. Their accuracy depends on the method of construction. To-date,…”
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A comparison between derivative and numerical optimization methods used for diameter distribution estimation by Gorgoso-Varela, José Javier, Ogana, Friday Nwabueze, Ige, Peter Oluwagbemiga

“…Modeling diameter distribution of forest stands requires suitable function(s) with the appropriate parameter estimation methods. To date, the parameters of…”
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A Comparison of Probability Density Functions Fitted by Moments and Maximum Likelihood Estimation Methods Used for Diameter Distribution Estimation by Jose Javier Gorgoso-Varela, Segun M. Adedapo, Friday N. Ogana

“…Modeling diameter distribution is a crucial aspect of forest management, requiring the selection of an appropriate probability density function or cumulative…”
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NONLINEAR MIXED-EFFECT HEIGHT-DIAMETER MODEL FOR Pinus pinaster AIT. AND Pinus radiata D. DON by Ogana, Friday Nwabueze, Corral-Rivas, Sacramento, Gorgoso-Varela, Jose Javier

“…ABSTRACT Tree height-diameter (H-D) relationships are important for routine forest assessment. Several H-D relationships have been developed for different…”
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Species composition and specific aspects of the Green Tree Retention structure in unmanaged mixed forests in Asturias (northern Spain) by Gorgoso Varela, José Javier

“…Aims of the study: i) To characterize the species composition and stand variables in a Green Tree Retention (GTR) structure obtained as result of applying an…”
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CRECIMIENTO EN VOLUMEN Y ESTADO NUTRICIONAL DE Eucalyptus globulus Labill. Y Pinus radiata D. Don EN ASTURIAS, ESPAÑA by Afif Khouri, Elias, Canga Líbano, Elena, Oliveira Prendes, José Alberto, Gorgoso Varela, José Javier, Cámara Obregón, María Asunción

“…Se estudiaron las propiedades del suelo que más influyen en el crecimiento en volumen y el estado nutricional de árboles en plantaciones de Eucalyptus…”
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Relationship among soil parameters, tree nutrition and site index of Pinus radiata D. Don in Asturias, NW Spain by Afif-Khouri, E., Universidad de Oviedo, Mieres, Asturias (España). Escuela Politécnica, Cámara Obregón, M.A., Universidad de Oviedo, Mieres, Asturias (España). Escuela Politécnica, Oliveira prendes, J.A., Universidad de Oviedo, Mieres, Asturias (España). Escuela Politécnica, Gorgoso Varela, J.J., Universidad de Oviedo, Mieres, Asturias (España). Escuela Politécnica, Canga Líbano, E

“…Se estudia en 38 parcelas de 0,1 ha cada una las propiedades del suelo que más influyen en el índice de sitio (IS) de plantaciones de Pinus radiata D. Don de…”
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