Seedlings (IMAGE) Frontiers Caption Abies religiosa (Sacred fir) seedlings (foreground) were planted in groups of 8 seedlings under the shade of pre-existing shrubs as “nurse plants” (Senecio cinerarioides), to have the benefit of a protective shade against extreme temperatures (either warm or cold extremes), something critical under the ongoing climatic change. Each seedling planted was originated from seed collected at the MBBR, from lower elevations than the planting site. Credit Cuauhtémoc Sáenz-Romero, UMSNH Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.