Radial growth responses to thinning and climate in native Nothofagus betuloides forests in Tierra del Fuego, Argentina

Franco, María Guadalupe; Mundo, Ignacio A.; Pastur, Guillermo Martínez; Barrera, Marcelo Daniel

doi:10.1016/j.dendro.2019.125625

Cited by 4 publications

(5 citation statements)

References 20 publications

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“…When the treatments are analyzed separately, a gradual increase in growth rates is observed, reaching a peak that varies between year 2 and 6 after the interventions. Similar patterns of the effects of thinning were found by Franco et al (2019) for Nothofagus betuloides. It is a challenge to determine whether it is best to apply thinning once these maximum values are reached, or at the time when previous values are recovered.…”

Section: Discussionsupporting

confidence: 77%

“…This can be explained by years with adverse climatic conditions (e.g. low rainfall) (Franco et al 2019) or mast years where photo assimilates are mostly used to synthesize reproductive organs instead of carbon fixation in growth rings (Hadad et al 2021). Although it has been shown that the application of intermediate treatments generates effects on ring widths, annual variation due to climatic variations cannot be eliminated by these silvicultural practices (Spiecker 2002).…”

Section: Discussionmentioning

confidence: 99%

“…Using this methodology, effects of thinning on annual radial growth have been reported for different species around the world (Misson et al 2003, Pérez-de-Lis et al 2011. In Tierra del Fuego, Franco et al (2019) analyzed the response to different combinations of thinning in secondary forests of Nothofagus betuloides (Mirb.) Oerst.…”

Section: Introductionmentioning

confidence: 99%

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Radial growth response to long-term thinning strategies in Nothofagus pumilio forests of Tierra del Fuego

et al. 2023

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New silvicultural proposals based on long-term trials are needed to develop forest management strategies. Radial growth response was the preferred proxy for managers to define thinning levels and best years for intervention. We analyzed long-term thinning strategies in secondary Nothofagus pumilio forests (55 years old) in Tierra del Fuego (Argentina) to determine and quantify the effect on radial growth. Samplings were conducted in a trial area established in 1965 where three interventions (17, 33 and 44 years after harvesting) with different thinning strategies were applied. We employed dendrochronological techniques to measure and co-date ring widths, comparing 19 different thinning strategies (n = 100 slices x 2 reading sections). Average ring width (RW), basal area increment (BAI), and periodic annual increment every five years (PAI 5 ) were calculated and compared through univariate comparisons. Radial growth responses were directly related to thinning intensity; however, a differential response was found according to thinning strategy (e.g. selective and systematic cuttings) and always significantly higher than the control (3 vs. 1 mm year -1 ). The maximum growth occurred between 2 and 4 years after thinning (YAT), and progressively decreased until reaching pre-cutting levels (5 to 8 YAT). The analyses of the thinning strategies showed that initial systematic thinning followed by at least light thinning when growth rates recover their pre-intervention values is the most convenient combination of intermediate treatments for Nothofagus pumilio forests. These results can contribute to better silvicultural decision-making in secondary forests and provide information to analyze the feasibility of their implementation.

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Section: Discussionsupporting

confidence: 77%

Section: Discussionmentioning

confidence: 99%

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Radial growth response to long-term thinning strategies in Nothofagus pumilio forests of Tierra del Fuego

et al. 2023

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“…The variation in temperature, relative humidity, and precipitation strongly affects the availability of resources (e.g., light, water, and nutrients) for individuals' survival, growth, and development [3,4]. Therefore, species have developed multiple morphological, physiological, and biochemical mechanisms to adapt to changes in climate and minimize potential stress events [5,6].…”

Section: Introductionmentioning

confidence: 99%

Influence of Climatic Variables on the Stem Growth Rate in Trees of a Tropical Wet Forest

Valverde,

Arias-Aguilar,

Castillo-Ugalde

et al. 2024

Conservation

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The growth of tropical wet forests has a significant relationship with the climate; aspects such as temperature and precipitation affect the species; however, few studies have characterized the stem growth rate of tropical tree species. This study’s objective was to characterize the effects of climatic variation on the interannual stem growth rate of eight species in tropical wet forest. Six trees per species were selected (n = 48 trees), and a dendrometer was installed to measure diametric growth bi-monthly between 2015 and 2018 (3 years), complemented with environmental measurements, to determine their growth equations from environmental variables and, finally, to define the relationship between the wood density and the stem growth rate. The results showed an average stem growth from 0.45 to 4.35 mm year−1, and 40 to 70% growth occurred in the months with the highest rainfall. Also, species with higher wood densities were found to have lower stem growth rates. Finally, the analysis of stem growth rate showed a significant relationship in all species between the variables of temperature and precipitation (R2 adj 0.88 to 0.96). Our results suggest that species with greater stem growth rates in wet tropical forests are more susceptible to climate changes, which may affect their dynamics in the face of potential drought scenarios and heat waves associated with climate change.

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“…Sin embargo, en los últimos 30 años la variación de las condiciones climáticas en las regiones tropicales ha generado un cambio en la dinámica de crecimiento de los bosques (Franco et al 2019;Marcelo-Peña et al 2019;Wang y Hamzah 2019). Debido a ello se han encontrado cambios en la composición florística (Biondi y Rossi 2015), en la dinámica de especies (Gao et al 2019) y específicamente en las tasas de crecimiento anual de los árboles (Grindean et al 2019).…”

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Relación de la variabilidad climática con el crecimiento diamétrico de ocho especies arbóreas de bosque seco en Costa Rica

Valverde

Arias‐Aguilar

Castillo

et al. 2021

ECOS

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El crecimiento de árboles en el bosque seco tropical tiene una relación significativa con el clima el crecimiento se desarrolla en la época lluviosa y en época seca el crecimiento se estanca. Sin embargo, son pocas las especies con las que se cuenta de estudios de crecimiento. Por tanto, el estudio caracterizó los efectos de la variación climática en el crecimiento diamétrico (Cd) de las ocho especies arbóreas de mayor importancia en un bosque seco tropical en Costa Rica. Se seleccionaron 12 árboles por especie, en los cuales se midió el Cd entre el 2015 y el 2018, complementado con mediciones climáticas (temperatura, precipitación, humedad relativa y horas luz) y determinación de la densidad de la madera (Dm). Se desarrollaron ecuaciones de Cd con variables climáticas y se evaluaron relaciones de Dm con Cd. Los resultados mostraron que el Cd anual es de 3.04 mm en Albizia niopoides; 2.83 mm en Bursera simaruba, 2.07 mm en Cordia alliodora, 1.92 mm en Cordia panamensis, 0.68 mm en Hymenaea courbaril; 3.82 mm en Luehea speciosa; 1,63 mm en Machaerium biovulatum y 0,30 mm en Handroanthus impetiginosus; se encontró una fase de crecimiento en la estación lluviosa y leves contracciones diamétricas en la estación seca. Con la correlación significativa de Cd con precipitación y temperatura media anual se determinó una relación positiva entre Dc y precipitación y negativa entre Cd y temperatura promedio, lo cual permitió desarrollar ecuaciones lineales de predicción de crecimiento con R2 superiores a 0,61 y errores menores a 1,00. Finalmente, se determinaron relaciones entre Cd y Dm; conforme Dm fue menor se obtuvieron mayores Cd.

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Radial growth responses to thinning and climate in native Nothofagus betuloides forests in Tierra del Fuego, Argentina

Cited by 4 publications

References 20 publications

Radial growth response to long-term thinning strategies in Nothofagus pumilio forests of Tierra del Fuego

Radial growth response to long-term thinning strategies in Nothofagus pumilio forests of Tierra del Fuego

Influence of Climatic Variables on the Stem Growth Rate in Trees of a Tropical Wet Forest

Relación de la variabilidad climática con el crecimiento diamétrico de ocho especies arbóreas de bosque seco en Costa Rica

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