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11-5-09

11-5-09 - Biology 330 Class Notes WE ARE OUTSIDE FOR LAB...

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Biology 330 – Class Notes – 11/5/09 WE ARE OUTSIDE FOR LAB - DRESS WARMLY and WEAR BOOTS (VERY MUDDY)! Models of succession: Facilitation Tolerance Inhibition Oklahoma example - Inhibition track – when the species are all poisoning each other The species with a large number of saplings, but maybe not many large mature trees (today), will be dominant and have lots of large trees at some point in the future Henry Horn – suggested that we construct a polygon around each tree and then census the saplings on the forest floor. When the tree falls down, the replacement will more than likely be one of the saplings will race to the top and plug the hole in the canopy. o The assumption is that one of the saplings will be the replacement The probability that the sapling with the greatest number of individuals will be the replacement o 752 maples o 152 beach o 72 ash o 32 oak can calculate the probability of any of the saplings becoming the replacement A vector is a matrix with a single column Tree [# stems / ha] approx. 2.5 acres in a hectare (ha) Sweet gum 100 Red oak 100 Hickory 50 Red maple 25 Beach 10 Current Canopy Vector

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Oak and Hickory seeds are NOT wind dispersed Canopy (currently established trees) Saplings Sweet Gum Red Oak Hickory Red Maple Beech Sweet Gum 0.39 0.10 0.01 0.13 0.01 Red Oak 0.09 0.11 0.16 0.11 0.01 Hickory 0.09 0.11 0.05 0.26 0.01 Red Maple 0.34 0.45 0.58 0.18 0.07 Beech 0.09 0.23 0.20 0.32 0.90 This is called a transition matrix . All of these columns sum to 1.
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11-5-09 - Biology 330 Class Notes WE ARE OUTSIDE FOR LAB...

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