Some nice bucks (pic)
#402
Nontypical Buck
Joined: Apr 2008
Posts: 3,879
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Hmmm...RDD theories....
The problem with all of this subject in PA is that clearcutting has become unfashionable...politically incorrect.
The problem with all of this subject in PA is that clearcutting has become unfashionable...politically incorrect.
#404
Nontypical Buck
Joined: Apr 2008
Posts: 3,879
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Please explain how RDDs are dependent on clear cutting. If there is no clearcutting in a WMU like 5C , does that mean the RDD would be less than a WMU 2G where there was more clear cutting.
#406
Nontypical Buck
Joined: Apr 2008
Posts: 3,879
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ORIGINAL: livbucks
Their total existence depends on clearcutting being unfashionable. There is no good reason besides aestetics to not clearcut.
Their total existence depends on clearcutting being unfashionable. There is no good reason besides aestetics to not clearcut.
#407
Typical Buck
Joined: Jul 2006
Posts: 584
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ORIGINAL: bluebird2
It tells me that if an over browsed forest of beech, birch and striped maple can support 40 DPSM , a healthy forest with preferred browse species can support even more deer.
It tells me that if an over browsed forest of beech, birch and striped maple can support 40 DPSM , a healthy forest with preferred browse species can support even more deer.
Actually that isn’t true!
I used to assist on doing tours at the deer enclosures on SGL # 30 where there were pens with different numbers of deer per square mile to study what affect they had on their habitat and their own survival. Each pen had about half of it clear-cut with regeneration started before deer were even put inside.
At 60 deer per square mile the deer would eat everything down to very low little of anything left they before winter was over they all die before winter ended during years when there was any significant amount of snow cover.
At 40 deer per square mile the deer ate all the preferred browse through the summer then during their first winter they cleaned off nearly all of the non preferred browse then managed to prevent any regeneration that should have occurred during their second summer. Those deer continued to slowly lose weight from their first winter on and then couldn’t survive in that pen through their second winter because they had depleted their food supply.
At twenty deer per square mile the deer and habitat were pretty closely matched and the deer never had trouble surviving though the habitat in the mature forest part of the pen never got to recover.
At ten deer per square mile you couldn’t even find the deer because it was so think with under story you couldn’t see through it. If hadn’t been for one old doe named Millie, who would walk out to great you, and the occasional pile of pellets you would see we would have had a hard time convincing people there were even any deer in that pen.
And this was not even an area with poor soils or steep rocky outcroppings like occur in much of unit 2G. Therefore, I can tell you with absolute certainty that the deer proved they couldn’t be sustained or even alive at 40 deer per square mile in even the better areas of unit 2G.
Back in the late 80s we even rented a bus and did a tour there for the USP. I wish those pens and that deer study were still there, it was a great eye opener for most people.
After the deer pens wewouldthen gojust a few hundred yards away, to Latham’s acre, and showed everyone that you can in deed get lots of great things growing, even under the canopy of a mature forest, if you fence out the deer.
R.S. Bodenhorn
#408
Nontypical Buck
Joined: Apr 2008
Posts: 3,879
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At 40 deer per square mile the deer ate all the preferred browse through the summer then during their first winter they cleaned off nearly all of the non preferred browse then managed to prevent any regeneration that should have occurred during their second summer. Those deer continued to slowly lose weight from their first winter on and then couldn’t survive in that pen through their second winter because they had depleted their food supply.
#409
Fork Horn
Joined: Sep 2008
Posts: 227
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The farmland deer have started moving the last two weeks. With all the edges to feed on they don't looked stress out. Go to www.rwbrooks3.com these pictures are from cameras on three corners of the field behind my house.
#410
Nontypical Buck
Joined: Apr 2008
Posts: 3,879
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At twenty deer per square mile the deer and habitat were pretty closely matched and the deer never had trouble surviving though the habitat in the mature forest part of the pen never got to recover.
At ten deer per square mile you couldn’t even find the deer because it was so think with under story you couldn’t see through it. If hadn’t been for one old doe named Millie, who would walk out to great you, and the occasional pile of pellets you would see we would have had a hard time convincing people there were even any deer in that pen.
At ten deer per square mile you couldn’t even find the deer because it was so think with under story you couldn’t see through it. If hadn’t been for one old doe named Millie, who would walk out to great you, and the occasional pile of pellets you would see we would have had a hard time convincing people there were even any deer in that pen.
Here is a quote from the SCS Certification Report, regarding the results of the study RSB referenced.
Higher deer densities (20-30 deer per square mile) are associated with reduced
abundance of seedlings of preferred browse species and understory dominance by non-preferred
plants such as grasses, sedges, hay-scented and New York fern, and browse-resistant American
beech and striped maple seedlings. At even higher deer densities (40+ deer per square mile),
even the browse-resistant seedlings are heavily impacted. These white-tailed deer/plant
interactions were illustrated by deCalesta and Stout (1997) on a deer impact curve (facsimile
below). In typically-managed northern hardwood forests, with the amount of forage created by
timber management activities and natural disturbance regimes, densities below 10 - 15 deer per
square mile are associated with fully diverse plant communities: deer impact is sufficiently low
that no plant species are eliminated or greatly reduced by preferential browsing by deer. This
threshold is likened to “diversity carrying capacity”. When densities exceed 30 deer per square
mile, deer obtain enough nutrition from plant species resistant to high deer densities to maintain
body condition and a high reproductive rate: this point is likened to “nutrition carrying
capacity.” When deer densities are this high, significant reductions in plant diversity, vertical
habitat structure and species composition occur.
abundance of seedlings of preferred browse species and understory dominance by non-preferred
plants such as grasses, sedges, hay-scented and New York fern, and browse-resistant American
beech and striped maple seedlings. At even higher deer densities (40+ deer per square mile),
even the browse-resistant seedlings are heavily impacted. These white-tailed deer/plant
interactions were illustrated by deCalesta and Stout (1997) on a deer impact curve (facsimile
below). In typically-managed northern hardwood forests, with the amount of forage created by
timber management activities and natural disturbance regimes, densities below 10 - 15 deer per
square mile are associated with fully diverse plant communities: deer impact is sufficiently low
that no plant species are eliminated or greatly reduced by preferential browsing by deer. This
threshold is likened to “diversity carrying capacity”. When densities exceed 30 deer per square
mile, deer obtain enough nutrition from plant species resistant to high deer densities to maintain
body condition and a high reproductive rate: this point is likened to “nutrition carrying
capacity.” When deer densities are this high, significant reductions in plant diversity, vertical
habitat structure and species composition occur.


