In laymen's terms:
Maximum sustained yield (MSY) - is used in game management to ensure the
highest growth rate by manipulating the natural 1:1 sex ratio. For example,
by allowing the killing of mostly males, which are desirable as trophies
over females because of their racks, it is calculated that one male can
impregnate many females (much as cattle on ranches, or chicken farms, where
they may have only one rooster). It has also been found though studies in
FL that in hunted herds, deer have twins/triplets at the rate of 38%,
whereas in non-hunted herds this occurs only at the rate of 14%. What state
wildlife agencies actually do is "game" management, NOT wildlife management
(which they claim to do). They manipulate only certain species for surplus
that are desirable and preferred for lucrative hunting.
Maximum sustainable yield - There's a lot of propaganda and half-truths in
this explanation, specifically regarding biological carrying capacity vs.
social carrying capacity, which they never acknowledge. To some people, one
deer is too many!
In population ecology <http://en.wikipedia.org/wiki/Population_ecology> and
economics <http://en.wikipedia.org/wiki/Economics> , maximum sustainable
yield or MSY is, theoretically, the largest yield (or catch) that can be
taken from a species' stock over an indefinite period. Fundamental to the
notion of sustainable harvest
<http://en.wikipedia.org/wiki/Sustainable_harvest> , the concept of MSY aims
to maintain the population size at the point of maximum growth rate by
harvesting the individuals that would normally be added to the population,
allowing the population to continue to be productive indefinitely. Under the
assumption of logistic growth
<http://en.wikipedia.org/wiki/Logistic_function> , resource limitation does
not constrain individuals' reproductive rates when populations are small,
but because there are few individuals, the overall yield is small. At
intermediate population densities, also represented by half the carrying
capacity <http://en.wikipedia.org/wiki/Carrying_capacity> , individuals are
able to breed to their maximum rate. At this point, called the maximum
sustainable yield, there is a surplus of individuals that can be harvested
because growth of the population is at its maximum point due to the large
number reproducing individuals. Above this point, density dependent factors
increasingly limit breeding until the population reaches carrying capacity.
At this point, there are no surplus individuals to be harvested and yield
drops to zero. The maximum sustainable yield is usually higher than the
optimum sustainable yield
<http://en.wikipedia.org/wiki/Optimum_sustainable_yield> and
<http://en.wikipedia.org/w/index.php?title=Maximum_economic_yield&action=edi
t&redlink=1> maximum economic yield.
From: felvtalk-boun...@felineleukemia.org
[mailto:felvtalk-boun...@felineleukemia.org] On Behalf Of dot winkler
Sent: Tuesday, September 13, 2011 10:54 AM
To: felvtalk@felineleukemia.org
Subject: Re: [Felvtalk] Hunters/PLEASE EXPLAIN
Please explain what you mean by "managed for maximum sustained yield".
_
From: Natalie
To: felvtalk@felineleukemia.org
Sent: Tuesday, September 13, 2011 8:10 AM
Subject: Re: [Felvtalk] Hunters
Actually, the deer aren't responsible for overpopulation; they are "managed"
for maximum sustained yield, for only one reason: to supply better hunting
opportunities and revenues from hunting license fees. If they were left
alone, their numbers would be normal, and just enough to fill the biological
carrying capacity of an area that can sustain their numbers. And, yet, you
always hear: Isn't it kinder to kill them than to let them starve? Then why
would they want such skinny deer? Because they really care only about that
rack, and a few lbs of meat are irrelevant.
-Original Message-
From: felvtalk-boun...@felineleukemia.org
[mailto:felvtalk-boun...@felineleukemia.org] On Behalf Of Lynda Wilson
Sent: Tuesday, September 13, 2011 7:02 AM
To: felvtalk@felineleukemia.org
Subject: Re: [Felvtalk] Hunters
It just breaks my heart when we lived in Austin, Tx that there were so many
deer starving, they would shoot them rather than feed them. In fact, I
worked for a CPA that would litterally climb a tree and have a pile of corn
on the ground, wait for the deer to start eating and shoot it. It made me
sick and I certainly gave him my opinion on it. Deer are such beautiful
animals.
- Original Message -
From: "Lorrie"
To:
Sent: Tuesday, September 13, 2011 4:37 AM
Subject: Re: [Felvtalk] Hunters
> On 09-12, dot winkler wrote:
>>Hysterical! L.O.L. I love it. The thing is, yes, some of them hunt
>>and actually use the meat - smoke it, make sausage with it (yuck!). At
>>least they are eating the deer. But the thing is, the animal is so
>>
