How much of that invasion is "natural," and how much of it is the barred
owl taking advantage of our interference with the forest ecosystem,
Warren? It's hard to claim the western forests are wildernesses
"untouched" by the hand of man. Even patches of relatively unchanged
forests are affected by our cutting of large expanses of forests in
between those patches.
Dave
On 7/7/2011 1:53 AM, Warren W. Aney wrote:
Geoff, mantras such as you cite are good as long as we recognize that they
tend to simplify grand complexity. The more or less natural barred owl
invasion of spotted owl habitat resulting in population displacement and
reduction is a good example of how even natural evolution/change can be seen
as adverse.
Warren W. Aney
Senior Wildlife Ecologist
Tigard, Oregon
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