that was a good post! I missed the main point on the first read got it the second time around. It makes a lot of sense. There are most assuredly many reasons why populations and individuals disperse. Like many systems though there is likely a long duration background trend with numerous short-term spikes. Example short-term drought and fire during an otherwise favorable time may induce a significant increase in dispersal.

Thinking about it now there is a fundamental difference between population expansion and dispersal. Gotta role out of here but that in of itself is a topic for another thread.
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“Nothing is at last sacred but the integrity of your own mind.” Emmerson

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