Effects of climate change on the emergence, survival and performance of oak seedlings: a field experiment approach
This study experimentally assesses effects of climate change (higher temperature and reduced rainfall) on the emergence, survival and performance of seedlings of two native oak species (Quercus crassifolia and Quercus eduardii) in a temperate forest from Mexico. Climate change conditions in the field were simulated with open-top chambers and rainout shelters, while controls were exposed to the current climate. Microclimatic and soil conditions measured in controls and climate change simulation plots (CCS) are provided in the Excel file “Data 01 Climate and soil variables”. In this dataset, values of air temperature, relative humidity of the air and soil temperature are weekly averages measured with dataloggers in three randomly selected plots of each climate treatment. Volumetric soil water contents at 3.6 and 12.0 cm depth were weekly measured with a time-domain reflectometer in five experimental units of each climate treatment. Soil contents of nitrate and ammonium were measured at the beginning (before climate manipulation) and at the end (after climate manipulation) of the experiment in five experimental units of each climate treatment. The proportion of emerged and surviving seedlings, as well as their age and shoot growth rates, in controls and climate change simulation plots (CCS) are provided for each oak species in the Excel file “Data 02 Oak seedling responses”. This latter file also provides the variables measured on leaves of three seedlings from each experimental unit, including the age of leaves, percent water content of leaves, PFFD on leaves, leaf temperature, effective quantum yield, and foliar contents of nitrogen and carbon.