Response strategies of the main forest types to climatic anomalies across Croatian biogeographic regions inferred from FAPAR remote sensing data

A multi-temporal spectral library approach for mapping vegetation species across spatial and temporal phenological gradients

“…Timing of phenological events may not be consistent between years, and phenology may become increasingly variable due to climate change (Badeck et al, 2004;Begue, Vintrou, Saad, & Hiernaux, 2014;Garonna et al, 2014;Girard, Beaudet, Mailly, & Messier, 2014;Guan, 2014;Park & Schwartz, 2014;Pilaš, Medved, Medak, & Medak, 2014;Schwartzberg et al, 2014). A single-date endmember library used between years may be a poor match to subsequent years if climate or other factors differ between library creation and application.…”

Ecological, Typological Properties and Photosynthetic Activity (FAPAR) of Common Beech (Fagus sylvatica L.) Ecosystems in Croatia

“…Relative resilience is the resilience weighted by the performance reduction during drought. In this study an adapted approach was applied, previously developed by Pilas et al [23] for FAPAR monthly time series. The relationship between midseason FAPAR in July (F ms ) was studied, which is very close to the maximum extent of photosynthetic activity for the season, as well as pre and post mid season vegetation performances.…”

“…In order to quantify ecosystem responses indices of resilience were applied that represent the concepts of resistance, recovery, resilience and relative resilience following the procedure of Lloret et al [20], Sánchez-Salguero et al [21], Herrero and Zamora [22] and Pilas et al [23]. In general, resistance is the inverse of performance reduction during extreme drought and presents the ratio between performance during and before drought.…”

“…Indices of resilience are mostly based on a single extreme climatic event or pointer years as seen in the studies of Lloret et al [20], Sánchez-Salguero et al [21], Herrero and Zamora [22]. However, applying these indices on an intra-annual scale using a monthly average FAPAR in July as a reference base [23] enables the inclusion of yearly responses for the whole period of observation (1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005) and thus, the calculated indices gain more statistical power.…”

Remote sensing of phenology: Towards the comprehensive indicators of plant community dynamics from species to regional scales

“…Phenological timing of plant greening, senescence and reproductive events often strongly responds to climate, including variation in atmospheric and substrate temperatures (Baldocchi et al, 2005; Hüttich et al, 2009; Wolkovich et al, 2012), precipitation (e.g. Clinton et al, 2014; Craine et al, 2012; Crimmins et al, 2011; MacFadyen et al, 2016; Madonsela et al, 2017), and droughts (Barboni et al, 2004; Huesca et al, 2015; MacFadyen et al, 2016; Pilaš et al, 2014; van Rooijen et al, 2015; Wang et al, 2016). These effects become evident in landscape gradients of floristic and phenological similarity that may further respond to topographic, geological and soil factors (Madonsela et al, 2017; Maeda et al, 2014) as well as land use and ecosystem management (Cord, Klein, Gernandt, et al, 2014; Lopes et al, 2017; Viña et al, 2012, 2016).…”