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Old 06-27-2016, 07:26 PM   #21
Holdstrong
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Originally Posted by geogymn View Post
It is better to keep quiet and be thought a fool than to open your mouth and remove all doubt.
I thought it was a pretty interesting point you were making, Geo. There are a lot of similarities between plants and animals when it comes to how disease and overpopulation are intertwined... and if nature is so good at controlling overpopulation via disease, why do invasive species (plant or animal) grow out of control?

There are probably a lot of complicated factors that help explain that, including the fact that native diseases may not impact invasive species quite as much (if at all) as they would a native species. But there is also the fact that the biggest impact disease has on a species is after it is already over populated... it isn't very good at preventing that overpopulation growth in the first place. Sure, there are exceptions, epidemics like White Nose Syndrome that can greatly impact population numbers regardless, but, generally speaking, common diseases (like rabies, mange, etc) nibble around the edges of a population, and ebb and flow with population numbers, but do not act as much of a check on those numbers.

Nature's primary population enforcers are the balance of food/resources and predation, both of which invasives are able to exploit.
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Old 06-27-2016, 08:25 PM   #22
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I remember the George Kennedy flick, I think it was TV movie. There have been some incidents this spring with rabid skunks in Washington County.
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Old 06-28-2016, 07:46 AM   #23
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Originally Posted by Holdstrong View Post
I thought it was a pretty interesting point you were making, Geo. There are a lot of similarities between plants and animals when it comes to how disease and overpopulation are intertwined... and if nature is so good at controlling overpopulation via disease, why do invasive species (plant or animal) grow out of control?

There are probably a lot of complicated factors that help explain that, including the fact that native diseases may not impact invasive species quite as much (if at all) as they would a native species. But there is also the fact that the biggest impact disease has on a species is after it is already over populated... it isn't very good at preventing that overpopulation growth in the first place. Sure, there are exceptions, epidemics like White Nose Syndrome that can greatly impact population numbers regardless, but, generally speaking, common diseases (like rabies, mange, etc) nibble around the edges of a population, and ebb and flow with population numbers, but do not act as much of a check on those numbers.

Nature's primary population enforcers are the balance of food/resources and predation, both of which invasives are able to exploit.
That is a good explanation, it makes a lot of sense. Thank you kindly!
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Old 06-28-2016, 11:06 AM   #24
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Thanks for the correction, its been awhile!
You're welcome.
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