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The mechanisms by which climate affects recruitment and loss of plants and the interactions between those plants and other organisms (e.g., pathogens, granivores, seed dispersers) have seldom been studied in the context of plant response to climate change. We examined how climate influences Jeffrey pine (Pinus jeffreyi) recruitment, mortality, and species interactions at three elevation zones (low,...
Large-seeded pines (Pinus spp.) are known to be dispersed by seed-caching corvids (i.e. jays and nutcrackers) and rodents (e.g. chipmunks and mice), with a concomitant decrease in seed dispersability by wind. We tested the idea that seeds of bigcone Douglas-fir (Pseudotsuga macrocarpa), which are winged but larger than the seeds of other members of Pseudotsuga, are dispersed by a combination of wind...
Frugivorous birds disperse the seeds of many fruit-bearing plants, but the fate of seeds after defecation or regurgitation is often unknown. Some rodents gather and scatter hoard seeds, and some of these may be overlooked, germinate, and establish plants. We show that these two disparate modes of seed dispersal are linked in some plants. Rodents removed large (>25 mg) seeds from simulated bird...
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