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Managing
Pine Stands for Wildlife
When preparing
to plant pines, the site almost always must be prepared in order
to control hardwood competition. Techniques involving the use of
prescribed fire should be selected whenever wildlife habitat
enhancement is a goal. If chemical release does not seem
probable in the near future (2-3 years), sowing korean lespedeza
the first winter following burning is the best way to provide
supplemental food. Sow approximately 10-15 lbs/ac during
February or March over parts of the stand near cover. On small
sites (< 10 ac), the entire stand could be sowed.
Pine
seedlings should be planted at a spacing that has at least 10
feet in one dimension. From a maximum density of 544 trees/ac
(10x8) down to a minimum of 396 trees/ac (10x11) you would cover
the range of economically viable planting rates which would
still provide some wildlife benefits. The wider the spacing the
greater the value to wildlife. An ideal may be to go with 453
stems/ac (8x12).
At this time
the full effects of release chemicals on wildlife habitat are
unknown. Although they are probably not very detrimental, use
release chemicals only if it is necessay to maintain a stand.
Precommercial
thinning should be used on stands between 4 and 12 years of age
when stocking exceeds about 600 or 650 trees per acre. One very
effective technique for doing this is to use a small dozer to
take out every other row of pines. This will not only improve
the growth potential of your pines, but will also provide an
excellent boost to the quality of the stand for wildlife at a
time when virtually all wildlife value has otherwise
disappeared.
With the
wider planting spacings indicated above you should be able to
thin your pines as early as age 17. It is important to thin as
soon as possible, not only for the benefits to the stand, but
also for the economic return and the very significant
improvement to the quality of the habitat for wildlife. Residual
stands should not exceed 65 sqft of basal area per acre,
although 50 sqft/ac is a much better goal for wildlife benefits
and should not result in any significant loss of timber
benefits. In fact, such densities may in the long run prove to
be more desirable economically since larger timber will be
possible on a shorter rotation. As with planting densities,
residual thinning densities have a limit below which timber
values are lost much more rapidly than wildlife values are
gained. Although a precise point is not known, it would
generally be desirable to stay above 45 sqft/ac. Successive
thinnings should be conducted as soon as possible thereafter.
Controlled
burning should be used in any stand where a fireline can
reasonably be placed. The first burn should come as soon after
the first commercial thinning as possible (usually two years)
and be repeated every two to three years thereafter. Burns
should be conducted under proper weather conditions between
November 1 and February 28. Unless and until you are experienced
in using controlled burning, you should have someone on site who
is whenever you are burning. Although it had once been thought
that the elimination of fire was crucial for helping wildlife,
it is now widely recognized that fire is a very useful tool in
creating and maintaining quality wildlife habitat. In fact,
where fire can be safely used it is the single best tool
available to landowners seeking to improve the quality of the
habitat on their property.
Timber Sales:
Selling timber should always be done with a signed contract in
order to protect your interests and to help insure the best
possible work. Layout of any sale should leave buffer strips
along wetland areas such as permanently flowing streams, ponds,
lakes, and beaver swamps. These buffer strips should be wide
enough to provide good quality wildlife movement corridors and
habitat diversity: about 100-150 feet wide on each side of the
water body. When large tracts are harvested, this type of
habitat can be extremely valuable to all types of wildlife.
Intermittent
streams should have smaller buffers left to provide additional
habitat for wildlife. These buffers need only be about 50-75
feet in total width. Forestry Best Management Practices (BMPs)
call for only 50 foot wide buffers, which provide only minimal
benefits for wildlife. Leaving out buffers of mature timber as
described here may result in a 5 to 10% loss of acreage in the
sale. This may reduce the sale price per acre, but keep in mind
the timber in the buffers will continue to grow (and in many
cases become more valuable) and be available for future sales.
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