Red Dendrocronológica del Pino de Altura (Pinus hartwegii Lindl.) para estudios dendroclimáticos en México

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

“…Pinus hartwegii tree ring series and documented records confirm drought episodes in central Mexico during 1886-1889, 1952-1960, 1970-1979(Florescano, 1980Metcalfe, 1987;Therrell et al, 2002;Villanueva-Díaz et al, 2015), and some of these periods match with our results. On the other hand, ring width indices above the mean are detected during 1891-1893 and 1940-1951, enhancing photosynthetic capacity (Florescano, 1980;Villanueva-Díaz et al, 2015).…”

“…The mean sensitivity of the ring width series of P. hartwegii at Tlaloc Mountain was concurrent with those carried out along the Transmexican Volcanic Belt, confirming the reliability of dendrochronological procedures to relate climate and tree growth in montane forests (Biondi, 2001;Biondi et al, 2003;Villanueva-Díaz et al, 2015). 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.…”

“…Remotely sensed proxies (i.e., NDVI) are powerful indicators of physiological status of plants (Kaufmann et al, 2004) and given that long-term vegetation status records in forest are limited, the reconstructed values can be used to estimate the spatiotemporal canopy vigor in high-elevation forests, involving photosynthetic activity and forest productivity (Andreu-Hayles et al, 2011). Pinus hartwegii tree ring series and documented records confirm drought episodes in central Mexico during 1886-1889, 1952-1960, 1970-1979(Florescano, 1980Metcalfe, 1987;Therrell et al, 2002;Villanueva-Díaz et al, 2015), and some of these periods match with our results. On the other hand, ring width indices above the mean are detected during 1891-1893 and 1940-1951, enhancing photosynthetic capacity (Florescano, 1980;Villanueva-Díaz et al, 2015).…”

“…Tree line ecotones in high-elevation forests are especially sensitive to climate variation effects (Körner, 2012;Salzer et al, 2009) which exert dominant control over forest productivity and tree water status (Körner, 2017;Maxwell et al, 2018;Silva, 2017). Negative effects from climate change will likely reduce the habitat of highelevation forests because the colonization toward higher altitudes is limited by soil development (i.e., depth), temperature, and precipitation patterns, which limit their biological range (Ricker et al, 2007;Saenz-Romero et al, 2013;Villanueva-Díaz et al, 2015). The spatiotemporal analysis of tree growth and its relationship with remotely sensed ecosystem parameters can be a powerful tool to assess the status of high-elevation forest resources and to understand the ongoing effects of climate change.…”

From Trees to Ecosystems: Spatiotemporal Scaling of Climatic Impacts on Montane Landscapes Using Dendrochronological, Isotopic, and Remotely Sensed Data

“…The growth increases at north-facing sites might reflect better site moistures and lower radiation; however, BAI chronologies also captured the effect of environmental conditions such as those dry years in 2004 and 2011 and wet years in 2005 and 2010. These particular years are concurrent with previous reports in central México using a dendrochronological network of P. hartwegii (Villanueva-Díaz et al, 2015) and reports for the North American Drought Monitor (SMN, 2019). Taken together, those results indicate that the main factors affecting the physiological response of trees and forests in the region are local to landscape-level variation in soil-plant-atmosphere interactions, as suggested by other authors (Liles et al, 2019;Silva, 2015Silva, , 2017.…”