We are looking for any reference that tested sowing all seed in a single year versus sowing the same total amount of seed but spread across several years (e.g., plant 1/3 as much seed over each of 3 years, and compare success to all the seed planted in 1 (or each) of the 3 years), particularly in a revegetation/restoration setting.
well, think about confounding of between-year environmental effects with any effect of sowing (+ some interaction likely too)
Hi Truman!
This is not exactly what you are asking for, but I love this paper for testing the efficacy of repeat seeding (with different approaches) in multiple sites and in multiple years, and asking about success aggregated over a longer timeframe, after throwing multiple things at the wall.
Article Evaluating a Seed Technology for Sagebrush Restoration Acros...
They didn't split up the seeds, like you are suggesting.
What I love about this paper, though, is what I think you are asking about... we can't expect plants to recruit from seed in every place in every year, and we can't predict when those best years are going to be, so it makes sense to write that in to restoration plans. Meaning, do repeat seeding, in different ways, for multiple years, in order to maximize the chance that in under some magic combination of conditions, seeds will turn into plants. :)
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