Series de incremento del área basal en árboles dominantes de Pseudotsuga menziesii (Mirb.) Franco muestran periodicidad de acuerdo con patrones climáticos globales

Abstract

Basal area increment series of dominant trees oftrunk section allow the analysis of tree growth trajectories. In this study, we used direct measurements of basal area increment (BAI) to explain biological periodicity and forecast basal area growth of Douglas-fir growing in Western Mexico. To remove the age effect on tree growth we also ran the analysis in terms of cambial age. Results showed significant (P < 0.05) correlation between BAI and precipitation from January to July. We found periodicities in tree growth of 7, 21, 27 and 60 years.However, the 60-year period, was determinant to build an ARIMA model (0,1,1), to forecast BAI for the next decades. Tree growth projections suggest reduced BAI in mature dominant trees for the next decades. Decreased tree-growth is an unexpected result, as BAI in dominant trees remains constant up to the biological age. Our finding is concurrent with a general decrement in tree growth in other forests of the world due to water stress, which suggests that the future climatic variability may worsen health conditions of Douglas-fir forests in North Mexico. ResumenL as especies forestales como Pseudotsuga menziesii (Mirb.) Franco son sensibles al clima y muestran anillos de crecimiento claramente definidos. La selección cuidadosa de árboles dominantes con fuste circular permite el análisis de tendencias de crecimiento arbóreo. En este estudio se utilizaron mediciones directas del incremento del área basal (IAB) para explicar las periodicidades biológicas y elaborar predicciones del crecimiento en el abeto Douglas-fir que crece en el oeste de México. Para eliminar el efecto de la edad en el crecimiento de los árboles se hizo un análisis en términos de la edad del cámbium. Los resultados mostraron correlación significativa (P < 0.05) entre IAB y la precipitación de enero a julio. Además, se encontraron periodicidades de 7, 21, 27 y 60 años en el crecimiento de los árboles; el periodo de 60 años fue determinante para la construcción de un modelo ARIMA (0,1,1) para realizar predicciones del IAB en las próximas décadas. Las proyecciones del crecimiento proponen una reducción del IAB en árboles maduros dominantes en las próximas décadas. Dicha reducción es un resultado inesperado, debido a que el IAB en árboles dominantes permanece constante hasta una edad biológica de senescencia. Los resultados concuerdan con una tendencia general de reducción en el crecimiento en otros bosques del mundo debido a estrés hídrico, lo cual sugiere que la variabilidad climática futura puede empeorar la condición de salud del abeto Douglas-fir de los bosques del norte de México.Received: October 21, 2015 / Accepted: July 20, 2016. Palabras clave:Dendrocronología, anillos de crecimiento, productividad forestal, bosques templados, análisis de series de tiempo.

Growth of Pinus cembroides Zucc. in Response to Hydroclimatic Variability in Four Sites Forming the Species Latitudinal and Longitudinal Distribution Limits

“…Favorable winter conditions may also improve photosynthesis and increase the reserves of carbohydrates later used in the growing season [33]. These ideas agree with similar results in other studies showing a positive correlation between winter precipitation and radial growth [33,34,42]. Bickford et al [31] also indicated that tree growth in dry areas from N. Mexico is mainly limited by low winter precipitation.…”

“…As a consequence, the capacity of the response in growth to the hydroclimatic variability could be used as an indicator of forest vulnerability to drought [9], and these responses could be used to forecast growth and productivity responses to climate change [34].…”

Linking Remote Sensing and Dendrochronology to Quantify Climate‐Induced Shifts in High‐Elevation Forests Over Space and Time

“…hartwegii forest. Here our sampling procedure of trees was based on dominant trees, more than in water or nutrient stressed individuals as suggested in the dendroclimatology approach (Fritts, ); thus, trees with position at the highest canopy level were effective to capture tree growth dynamics, as in others works (Berner et al, ; Castruita‐Esparza et al, ). Temperature is a determinant factor for tree growth at alpine and boreal forests, triggering the reactivation of cambial activity, xylem cell differentiation, and photosynthesis (Antonucci et al, ; Körner & Paulsen, ; Li et al, ; Rossi et al, ).…”

“…Although Astudillo-Sánchez et al (2017) developed a chronology in the same mountain, our new ring width chronology is an updated series 50 years longer with a stronger sample depth support, useful to describe the tree growth variation for this P. hartwegii forest. Here our sampling procedure of trees was based on dominant trees, more than in water or nutrient stressed individuals as suggested in the dendroclimatology approach (Fritts, 1976); thus, trees with position at the highest canopy level were effective to capture tree growth dynamics, as in others works Castruita-Esparza et al, 2016). Temperature is a determinant factor for tree growth at alpine and boreal forests, triggering the reactivation Figure 10.…”

“…Here we found that winter-spring NDVI had a positive correlation with tree growth in the following year; in other words, good canopy vigor in winter-spring is an indication of better tree growth performance in the next growing season. Castruita-Esparza et al (2016) have suggested that for Douglasfir in Mexico, soil water storage in summer defines tree growth in the next year. Therefore, seasonal NDVI analysis is recommended to understand forest responses.…”