October 10, 2017 4:00PM - 5:00PM
John Grady presents "Size-energy rules in closed forests."
From seedlings to canopy dominants, trees vary many orders of magnitude in size within a forest. While the central role of body size in governing energetic and biological rates is well documented, how size influences energy flux at community levels is still debated. One prominent idea, known as energy equivalence, posits that collective production rates for a size class is independent of body size; however this conflicts with light-limitation effects imposed by larger trees in closed forests. I test theoretical claims using demographic and solar data from an old growth neotropical rainforest and a secondary eastern deciduous forest. My findings suggest basic rules governing the size structure and production rates of closed forests.
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