Diameter growth performance of tree functional groups in Puerto Rican secondary tropical forests

Adame, Patricia; Brandeis, Thomas J.; Uriarte, María

doi:10.5424/fs/2014231-03644

Cited by 13 publications

(15 citation statements)

References 36 publications

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“…While the potential role of secondary tropical forests as a timber source is widely recognized, there is limited information available with which to design effective management schemes (Henao, Ordóñez, de Camino, Villalobos, & Carrera, 2015). Understanding the factors that influence tree growth in early successional stands is important to accurately determine timber yields in secondary tropical forests, which are characterized by mixed-species and uneven-aged stands (Adame, Brandeis, & Uriarte, 2014).…”

Section: Introductionmentioning

confidence: 99%

Growth rates of valuable tree species in secondary tropical montane cloud forests in Mexico: influence of tree size, crown position and competition

Mendoza-Hernández

Gerez‐Fernández

Purata-Velarde³

et al. 2019

MYB

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Numerosas especies arbóreas del bosque mesófilo de montaña (BMM) o bosque de niebla, son aprovechadas por las comunidades locales a través de tala selectiva no planificada. La falta de información de las tasas de crecimiento de las especies más valiosas económicamente limita el diseño de esquemas efectivos para el manejo sustentable del BMM. El objetivo de este estudio fue determinar las tasas de crecimiento diamétrico y evaluar la influencia del tamaño del árbol, la posición en el dosel y el área basal de los árboles vecinos en el crecimiento de especies maderables comunes del BMM. Se midió el crecimiento anual diametrico en 60 individuos por especie (10 cm a 45 cm de diámetro) de Alnus acuminata, Liquidambar styraciflua y Quercus xalapensis, durante dos años en dos sitios de BMM secundario, Veracruz, México. Altas tasas de crecimiento diamétrico (centímetros por año [cm año-1]; promedio ± EE) fueron registradas en las tres especies; la mayor se registró en A. acuminata (1.62 cm año-1 ± 0.08 cm año-1), seguido por Q. xalapensis (0.91 cm año-1 ± 0.07 cm año-1) y L. styraciflua (0.71 cm año-1 ± 0.08 cm año-1). En las tres especies la tasa de crecimiento estuvo inversamente relacionada con el área basal de los vecinos, indicando el efecto negativo de la competencia. Los árboles dominantes presentaron tasas de crecimiento mayores que los árboles suprimidos en las tres especies. Las altas tasas de crecimiento registradas en bosques sin manejo previo y el efecto negativo del área basal de los vecinos apoyan el potencial para el manejo silvícola en BMM secundarios.

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Section: Introductionmentioning

confidence: 99%

Growth rates of valuable tree species in secondary tropical montane cloud forests in Mexico: influence of tree size, crown position and competition

Mendoza-Hernández

Gerez‐Fernández

Purata-Velarde³

et al. 2019

MYB

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“…The nine selected timber species responded differently to the release because their growth habits, initial DBH (diametric class) and phenological traits, which determined the success of the treatment. Historically, tree growth has been modeled based on different classification criteria, in which the most common criterion are taxonomic affinity, ecological guild and growth dynamics [18,51]. The growth and dynamics of natural tropical forests in Ecuador have been monitored for decades by means of continuous measurements over time [52].…”

Section: Discussionmentioning

confidence: 99%

“…The members of the species of genus Inga are generally medium-sized and shade intolerant [57], but some species are only moderately shade tolerant [18]. However, Inga acreana grows in relatively open sites, where release improves the environmental conditions and consequently diameter growth [23,58,59].…”

Section: Discussionmentioning

confidence: 99%

“…Also, in neotropical countries (e.g., Puerto Rico, Nigeria, Guyana, Sarawak and Brazil) this technique has been implemented successfully in managed forests [10,15]. However, in natural tropical forests, the release from competitors around the desired timber species is poorly investigated thus far, because these forest types present an extraordinarily high species density, even though the density of individual species is comparatively low [18]. This generally leads to the decelerated diameter growth of tropical forest trees [19], but growth rates vary significantly between species, depending on their growth habit (early-, mid-or late-successional), age, phenological traits and climatic conditions [20,21].…”

Section: Introductionmentioning

confidence: 99%

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Early Growth Response of Nine Timber Species to Release in a Tropical Mountain Forest of Southern Ecuador

Cabrera

Fries

Hildebrandt

et al. 2019

Forests

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Research Highlights: This study determined that treatment “release from competitors” causes different reactions in selected timber species respective to diametrical growth, in which the initial size of the tree (diametric class) is important. Also, the growth habit and phenological traits (defoliation) of the species must be considered, which may have an influence on growth after release. Background and Objectives: The objective of the study was to analyze the diametric growth of nine timber species after their release to answer the following questions: (i) Can the diametric growth of the selected timber species be increased by release? (ii) Does the release cause different responses among the tree species? (iii) Are other factors important, such as the initial diameter at breast height (DBH) or the general climate conditions? Materials and Methods: Four-hundred and eighty-eight trees belonging to nine timber species were selected and monitored over a three-year period. Release was applied to 197 trees, whereas 251 trees served as control trees to evaluate the response of diametrical growth. To determine the response of the trees, a linear mixed model (GLMM, R package: LMER4) was used, which was adjusted by a one-way ANOVA test. Results: All species showed a similar annual cycle respective to diametric increases, which is due to the per-humid climate in the area. Precipitation is secondary for the diametric growth because sufficient rainfall occurs throughout year. What is more important, however, are variations in temperature. However, the species responded differently to release. This is because the initial DBH and growth habit are more important factors. Therefore, the species could be classified into three specific groups: Positive, negative and no response to release. Conclusions: Species which prefer open sites responded positively to release, while shade tolerant species and species with pronounced phenological traits responded negatively. The initial DBH was also an important factor for diametric increases. This is because trees of class I (20 cm to 30 cm DBH) responded positively to the treatment, whereas for bigger or older individuals, the differences decreased or became negative.

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“…In general, the diametric growth of trees in forests is a result of competition for space and resources with other species, which is especially challenging in the tropical forests, because of their high biodiversity [18]. In tropical forests species density is extraordinarily high, but the density of individual species comparatively low, which results generally in a decelerated diameter growth of the trees [19].…”

Section: Introductionmentioning

confidence: 99%

Early Response to Liberation and Climatic Seasonality of Selected Timber Species in a Tropical Mountain Forest of Southern Ecuador

Cabrera¹,

Fries²,

Hildebrandt³

et al. 2018

Preprint

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Research Highlights: The study determined that selective thinning causes different responses, the initial size of the tree released is an influential factor in the growth of species. The temporality of climate and physiological conditions of each species are influential in the growth. It is evident that the defoliation of certain species is an important factor that limits the growth of the species causing thinning to have a negative response. Background and Objectives: The objective is to analyze the behavior of nine timber species, respective to diametric growth after their liberation. This research aims to answer the following questions: (i) How do the selected tree species react to the liberation? (ii) Can the productivity of the trees (diametric growth) be enhanced by liberation? (iii) Are there other factors that influence the diametric growth of the released trees? Materials and Methods: The study was executed in the “Reserva Biológica San Francisco” were 488 trees were monitored, including nine timber species. Therefore, 197 trees were released (removal of competitors) and 251 trees served as reference. To check whether the initial DBH or other factors, like the selective thinning or climate conditions, determine the diameter growth a linear mixed model GLMM was applied. To adjust the linear mixed model a one-way Anova test was executed. Results: Timber species responded differently to the thinning in comparing to reference trees. Therefore, the species analyzed were separated into three groups (positive, negative, and no response to liberation). Conclusions: Liberation potentiates the growth of certain timber species that do not defoliate and considered semi-tolerant to shade. Precipitation and temperature affect all species, but in the defoliate species, it would not be convenient to release them or at least the evidence of these first three years does not show clear differences with control trees. Increase in trees released are higher in trees of the first two diametric classes in all species, this means that larger trees (i.e., older) release does not affect them in a positive way so release should occur in the youngest trees.

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Diameter growth performance of tree functional groups in Puerto Rican secondary tropical forests

Cited by 13 publications

References 36 publications

Growth rates of valuable tree species in secondary tropical montane cloud forests in Mexico: influence of tree size, crown position and competition

Growth rates of valuable tree species in secondary tropical montane cloud forests in Mexico: influence of tree size, crown position and competition

Early Growth Response of Nine Timber Species to Release in a Tropical Mountain Forest of Southern Ecuador

Early Response to Liberation and Climatic Seasonality of Selected Timber Species in a Tropical Mountain Forest of Southern Ecuador

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