leaf out Journal Article 4 phenology 4 Concord 2 Henry David Thoreau 2 Massachusetts 2 Research Support, Non-U.S. Gov't 2 mehr ... Research Support, U.S. Gov't, Non-P.H.S. 2 chilling requirements 2 invasive species 2 native species 2 059QF0KO0R 1 Published Erratum 1 Siberia 1 Water 1 botanical gardens 1 climate change 1 flower 1 freezing-induced embolism 1 fruit 1 leaf phenology 1 long-term observation 1 phylogeny 1 senescence 1 shrubs 1 trees 1 vascular phenology 1 vessel 1 vines 1 wood porosity 1 weniger ...