Global seed supply is too poorly understood to even speculate on its contribution to the regeneration of forests that are increasingly lost to disturbance, climate change, and extensive human management. Through data synthesis and collaborations with more than 100 international researchers, the Clark lab has established the mastif project and assimilated seed production data for 12.1 millition tree-years in more than 700 species from all vegetated continents. We are interested in:
A global analysis finds that fecundity decline in large trees is pervasive, consistent with physiological decline, thus providing new evidence for tree senescence. For the 20% of species not showing fecundity declines, this lack of evidence was linked not to specific species groups, but rather to lack of large trees in the data.