MSY (Max Sustained Yield) - The HuntingPA.com Outdoor Community
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post #1 of 159 (permalink) Old 04-13-2016, 09:11 PM Thread Starter
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MSY (Max Sustained Yield)

<span style="font-weight: bold">RE:</span> Penn State Deer Forest Blog entry April 11, 2016

I'm wondering if there is a new Minister of Propaganda...


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post #2 of 159 (permalink) Old 04-13-2016, 09:30 PM Thread Starter
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Re: MSY (Max Sustained Yield)

The assertion that <span style="font-style: italic">"PGC never used MSY to manage white-tailed deer"</span> is such hooey.

That fallacy followed by distractions like a need to count acorns and predict weather are sure signs that an attempt at brain-washing is about to occur.

Fact is from about 1979 until 2002 PGC managed deer based on deer density goals. Those scientific goals are based on decades of PGC study on carrying capacity.

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post #3 of 159 (permalink) Old 04-13-2016, 09:46 PM Thread Starter
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Re: MSY (Max Sustained Yield)

Fact is, the Biological Carrying Capacity of forest habitat was scientifically determined by taking deer to the point of death. Then density <span style="font-style: italic">goals</span> were set very conservatively BELOW that point, in fact less than HALF of BCC. In other words, the point of MSY.

Fact is, it is stated in PGC deer plan that density goal is one which can support deer <span style="font-style: italic">"<span style="text-decoration: underline">without</span> over-browsing forest habitats"</span>.

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post #4 of 159 (permalink) Old 04-13-2016, 09:58 PM Thread Starter
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Re: MSY (Max Sustained Yield)

MSY is not a "theory" at all, it is the real world observed reproductive response of deer studied at various densities on the George Reserve Michigan.

Fact is QDMA still cites this as appropriate management today in their Annual Whitetail Report:


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post #5 of 159 (permalink) Old 04-13-2016, 10:03 PM Thread Starter
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Re: MSY (Max Sustained Yield)

Make no mistake folks, Diefenbach is testing the waters to see if he can nuke the very foundation of deer management in PA. Hunters should be fighting mad and shame him into a retraction like Dr. William Sharpe did when he posted Gary Alt's copyrighted deer-exclosure photo and promoted it as "science" in the June 17, 2015 "Living Legacy" entry.

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post #6 of 159 (permalink) Old 04-14-2016, 01:44 AM
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Re: MSY (Max Sustained Yield)

Round 2 of HR may be right around the corner .
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post #7 of 159 (permalink) Old 04-14-2016, 02:01 AM
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Re: MSY (Max Sustained Yield)

A serious question here, if HR got us closer to MSY, why hasn't fawn recruitment increased. It has actually decreased since 2000, but even if it was flat, it should be much higher. Not saying this is the case but a lot of research today is not based on fact but an agenda or who ever if footing the bill.
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post #8 of 159 (permalink) Old 04-14-2016, 10:15 AM
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Re: MSY (Max Sustained Yield)

Most likely a combination of things adding up.

Obvious that predators have a role.

Timber harvest %.

This is a sore subject.... DNA evidence suggests that buck don't breed as often as we have assumed. More buck than ever are being removed before the rut each year.
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post #9 of 159 (permalink) Old 04-14-2016, 09:37 PM
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Re: MSY (Max Sustained Yield)

Quote:
Originally Posted by grundsow
Make no mistake folks, Diefenbach is testing the waters to see if he can nuke the very foundation of deer management in PA. Hunters should be fighting mad and shame him into a retraction like Dr. William Sharpe did when he posted Gary Alt's copyrighted deer-exclosure photo and promoted it as "science" in the June 17, 2015 "Living Legacy" entry.
Just what are you taking such extreme exception too?

Dick Bodenhorn
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post #10 of 159 (permalink) Old 04-15-2016, 01:56 AM Thread Starter
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Re: MSY (Max Sustained Yield)

If PGC deer density goal had been set at Biological Carrying Capacity, there would have been no SURPLUS deer left to harvest!

But it didn't happen. Instead, the forest-dwelling deer pop swelled to TWICE goal and was still growing in the face of record harvest. Proof positive the PGC goal was very, very conservative. Now density is held at less than 1/4 of BCC, for no biologically sound reason.

I can't complain but sometimes I still do - Joe Walsh
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