Tree-ring time series provide long-term, annually resolved information on the growth of individual trees. However, public tree-ring archives contain a considerable portion of data collected from trees that have been selected with specific research questions in mind (e.g., for climate reconstruction).  This makes these archives a biased representation of the sensitivity of forest ecosystems to ongoing climate variation (e.g. temperature, precipitation), including non-stationarity (i.e....

The objective of this study is to identify and estimate the impact of the change in climate on the annual growths of the three main forest species from Romanian forests: Norway spruce, European beech, and sessile oak. We have used more than 6500 increment cores of the National Forest Inventory in combination with the Romanian homogenized climatic data. To ensure more than 30 observations per time step, we have used quinquennials rather than years. Using a longitudinal autoregressive mixed ...