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Michigan Forests Magazine
Excerpts From SUMMER 2008 Issue
Conservation means the wise use of the earth
and its resources for the lasting good of men.-Gifford Pinchot |
DEER PERCEPTION REPORT
by Bill Cook, MSU Extension Service Forester
The politics of Michigan deer management have always been
controversial, sometimes heated, occasionally even hostile. The
mystique surrounding white-tailed deer reaches religious proportions
among many folks.
All deer hunters, naturally, look forward to this traditional
time, deeply ingrained into Michigan outdoor culture. Some hunters
hold the annual November ritual as a holy pilgrimage.
Deer also attract other strong proponents. Tourists love to see
the animals, especially the moment when a youngster sees their first
deer. People feed them, watch them, and manage forests for their
benefit. With little doubt, they are the most revered wildlife
species in the state.
So, what happens when the poster-child of all that is good with
nature becomes an ecological threat? It's not difficult to imagine
the clash of values and ideals.
Deer browsing causes millions of dollars of damage to gardens,
shrubs, and the plant industry. Farmers claim crop losses. Body
shops rake in the revenue from increased car/deer collisions. Deer
have long prevented trees from adequately regenerating in much of
our forests. They have spread diseases such as bovine tuberculosis
and Lyme disease. Overbrowsing diminishes habitat for endangered
species, wildflowers, songbirds, and other wildlife. They contribute
to the success of invasive plants.
Michigan is experiencing a growing frustration among many folks
about the negative impacts that deer have on our properties and to
ecological conditions in many places.
Michigan has done little to assess the impact of deer in the
natural landscapes. Biologists use well-grounded, science-based
methods to determine the size and condition of the deer herd, but
very little is done to assess the habitat impacts, especially in the
vulnerable habitats. The size of the herd is one question. The more
important question, ecologically, involves the impact of those deer.
Science cannot fully answer that question on a statewide basis.
However, much research exists on site-specific locations and on
certain aspects of forest ecology. But that's not enough to convince
the opposition or risk policy changes.
Given the lack of rather costly statewide vegetation inventory
data, the Michigan Society of American Foresters (MSAF) polled their
membership about perceptions of the deer impacts on forests.
Collectively, those opinions were derived from nearly 400 years of
trained professional field experience during the five years from
2003 to 2007. Foresters across the state are witnessing some scary
things done by deer to our forests.
The overwhelming opinion among MSAF foresters is that deer
depredation is a serious issue in many areas of the state, has been
a serious issue for a long time, and will not likely change within
the next decade. This may not sit well with some of the strong
advocates for as many deer as possible. But its the closest thing we
have to a statewide assessment. And its the opinion from folks who
know what to look for.
If you're interested in reading the report, it can be found on
the MSAF website [ http:/ /michigansaf.org]. Look for the link on
the home page.
Of course, science and professional opinion seldom rule the day.
The debate about deer and deer impacts will remain in the political
and social arenas. In the meantime, hundreds of foresters quietly go
about their business, watching the forests, and working towards a
bright future. They're a hopeful and idealistic bunch.
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A FORESTRY SUCCESS STORY
by Rick A. Lucas, CD Forester
The Pine River Area School Forest (PRASF) consists of 651 acres
scattered throughout 5 townships within the school district. The
largest contiguous parcel consists of 320 acres found in Leroy
Township of Osceola County. Most of the tracts of land were gained
at a time when school districts took title to tax-delinquent lands
deeded by the state and in some cases counties. When titles were
given to school districts, they were generally on the basis of a
small purchase price, often only $1. For the record, at the time of
purchase in the 1940’s, the PRASF consisted of three separate
schools located in the communities of LeRoy, Luther and Tustin. It
wouldn’t be until the late 60’s that the school district would
consolidate and take its present form.
During the late 80’s and early 90’s, the school district
implemented a couple selective thinnings where it was needed as
determined by the local Conservation District (CD) Forester Rick
Lucas. It wasn’t until approximately 2004 when the current school
administration and school board took its hardest look at the forest.
It was during this timeframe that state legislation allowed schools
an opportunity to sell these lands and keep up to 50% of the
proceeds to address school budget short-falls. Facing a tight budget
situation, the school board faced a great deal of public outcry to
sell the land. Over the course of several school board meetings, it
was determined that the school would retain the land and instead
look to manage it more actively.
At the urging of CD Forester, Rick Lucas, the school district
enrolled the forest in the American Tree Farm Program. The Tree Farm
Program is an organization which promotes the growing of renewable
forest resources, while protecting environmental benefits and
increasing public understanding of all the benefits of productive
forestry. The Tree Farm Program is a great tool for any school or
township owned property. Participants in this program are required
to have a certified management plan. Timber harvesting and
reforestation needs are among a few of the many activities included
in these plans. Participating ownerships are re-inspected every 5
years by a certified inspector to update needs. Additionally, in
situations where local leadership may change frequently, such as is
the case with school boards and administration, the Tree Farm
Program adds stability to the decision making process.
Following the certification of the school forest in May of 2006,
it was determined that several tracts of forest were in need of
harvesting. The school board was encouraged to hire a consulting
forester to administer timber harvesting needs. After completing a
formal process, Ken Ford of Lake States Forestry Consultants was
hired to oversee operations from start to finish.
The first tract of timber offered for sale consisted of a little
more than 20 acres of mature red pine. The recommendation for the
tract resulted in a final harvest with plans to replant the site the
first spring after completion. The planting was completed early this
spring. Sale of the trees generated $62,000 for the school and
assisted in the purchasing of a $75,000 bus.
According to Jim Ganger, Superintendent of the Pine River
Schools, the school bus was bought to “maintain a healthy and safe
bus fleet for transporting students. We probably get 10 to 12 years
of service out of a school bus before it is spent, and we have to
replace one or two buses every year to maintain our fleet. We have a
very large district, and our transportation system is critical for a
lot of students.”
In the near and distant future, the school’s plans for money
generated from timber sales will go toward district facility
improvements. According to Ganger, the money will be used to replace
roofs and make necessary building repairs. “We have two roofs that
are very critical and need to be replaced soon,” said Ganger, noting
that the school also has several buildings that will need a roof
replaced because they are “aged and deteriorated.”
Ganger went on to say that the school only cuts trees at the time
that it is recommended by Lucas and in accordance to their
management plan. Ganger said the school district is fortunate to
have “a lot of” acreage compared to other school districts in the
surrounding area. “It’s unique to our district that we have control
of 651 acres. It’s a valuable resource for the community and the
school district if it’s managed correctly.”
The school district will soon reap the benefits of additional
timber sales. Sometime within the next year, 3 more tracts are
scheduled for selective thinning. These tracts will be marked by Ken
Ford and offered through a competitive bidding process to
prospective buyers.
According to Granger, it has been a real positive experience for
the school board and administration in taking a more active role
with managing the school forest. He concluded by saying, “We’re
trying to be good stewards of the forest and manage all the acreage
in a responsible manner. We’re not in the business of timber
management or following timber markets. So we’re grateful for the
local professional assistance we have received.”
A lot of private land owners have the same opportunity as the
Pine River Area Schools to improve the overall health of their
forest while also generating income. Contact a professional forester
to look into your options.
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TREE IDENTIFICATION
By Bill Cook
Many people pride themselves on their skill in identifying trees.
Maybe the trees are in their yard or woodland. Sometimes, people
have a heightened ecological conscience. For whatever reason, the
new green of the season prompts many to learn about trees. Michigan
boasts around 100 tree species, depending upon how a tree is
defined. It's impossible to fully understand a forest without
knowing who grows there. Trees are not the only life form, of
course, but they are the dominant life form and impact everything
that occurs in the forest. And of course, its difficult to fully
appreciate the amazing natural resources of Michigan without
considering forests.
There are about a dozen characteristics available to help
identify trees. Learning which subset of characteristics to use for
a particular tree is where practice and skill are needed. Some
characteristics are seasonal, such as leaves, fruits, and flowers.
Most others are more year-round, such as twig and branching
patterns, buds, bud scars, bark, tree form, site, and tree
associates. For some trees, paper birch for instance, most people
only need to look at the white, peeling bark. Easy. Although,
sometimes pale versions of quaking aspen have been mistaken for
paper birch. Trees with acorns are one of several oaks. Maple leaves
have a distinct palmate shape.
Many people refer to all conifers as – pines—when most conifers
are not pines, especially in the U.P. That's just not correct. Pines
make up only about 42 percent of the conifer volume in Michigan and
only 24 percent in the U.P. Northern white cedar is, by far, the
most common conifer in Michigan.
Because there are only about a dozen common conifers (only four
are pines!) in the forest and identification is fairly easy to
learn; beginning a tree ID quest with the conifers will build
confidence.
Another good tactic for beginners is learning the ten most common
tree species first; sugar maple, red maple, white cedar, red pine,
quaking aspen, northern red oak, white pine, bigtooth aspen,
hemlock, and basswood. Once these trees are known, comparing them to
unknown species will often make the identification process move
quicker.
Using easy seasonal characteristics is another good way to learn
to identify trees during the off-season. Finding cherries goes a
long way to segregating the cherry species. While doing that, its a
good time to observe other key features, such as bark patterns and
buds.
A tree with an opposite branching pattern narrows the choices
down to maples, ashes, and dogwoods. Once you know that, its not too
difficult to use a field guide to learn the species. However, make
sure you have a tree and you're not looking at a shrub. Some of our
shrub species also have opposite branching.
Leaves are a popular way to learn tree species, and they're a
good technique during the growing season. Naturally, some tree
species have variable leaf characteristics, so be cautious. Use
multiple samples from the same tree to get an average appearance.
Again, once you know the species, take the time to notice other
characteristics that will help you identify the tree during the
leaf-off season.
During the winter leaves can still sometimes be a good ID
feature. Beech and ironwood often retain light brown leaves
throughout the winter. Similarly, red oaks and sometimes sugar maple
hold onto some of their leaves that are lower down on the tree. And,
of course, all the conifers except tamarack and larch have needles
year-round.
Considering –where—the tree grows can be quite helpful,
especially for sites that are particularly dry or wet. A pine on a
dry sandy plain will most likely be jack pine. A broad-leafed tree
in a swamp will likely be black ash or one of the elms. Black and
white spruce can be difficult to distinguish by needle appearance,
but if its in a lowland site, its probably black spruce. If the site
is upland, its probably white spruce.
The more trees you know, the easier it is to learn more. One of
the best field guides is –Trees of Michigan—by Linda Kershaw. Norman
Smiths –The Trees of Michigan and the Upper Great Lakes—is also
good. For the U.P. and nearby regions, the on-line U.P. Tree ID
website is good [ http:// uptreeid.com]. Happy hunting.
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PRIVATE FOREST CONSIDERATIONS FOR
SNOWSHOE HARE
By Rick Myrick
Snowshoe Hare (Lepus americanus), sometimes called varying hare,
are well suited to the snow-covered environment of Northern
Michigan’s latitudes. Deriving its common name from its large
densely hair covered hind feet, the snowshoe hare’s “snowshoes” help
it remain near the top of deep snow while moving.
The Michigan Department of Natural Resources (MDNR) has
identified the snowshoe hare as a species of greatest conservation
need (SGCN) due to its declining population and associated threats,
which includes loss of habitat. Private forest landowners are in a
perfect position to further snowshoe hare habitat by encouraging
those vegetative cover and food species that benefit the hare.
Snowshoe hare range in Michigan throughout the Upper Peninsula
and have been noted as far south as the approximate middle of the
Lower Peninsula. The snowshoe hare’s home range varies depending
upon region and vegetative structure, with typical ranges noted
between 15 to 25 acres.
As the amount of daylight begins to diminish in autumn, the
pelage of the varying hare begins to molt from brown to white. The
thick insulating white fur not only protects the snowshoe hare from
plunging northern winter temperatures, but also serves as camouflage
in snow conditions.
Snowshoe hare populations tend to fluctuate over a
well-documented 10 year cycle. The MDNR, in referring to recent
snowshoe hare densities in Michigan, notes “harvest trends indicate
that populations have been in decline for the past 15 to 20 years”.
It is currently unknown if this decline is related to the natural
cyclic pattern. However, biologists suspect there may be other
causes, such as habitat loss, forestry and wildlife management
incompatibilities and high terrestrial predator densities
contributing to the decline.
In contrast to the almost ubiquitous cottontail rabbit, snowshoe
hare are not well adapted to agricultural landscapes. Varying hare
in Michigan utilize landscape features that are typical to its
range. Lowland conifer swamps dominated by northern white cedar, as
well as peat lands such as spruce/tamarack bogs, are common forest
types that provide habitat for hare.
Varying hare habitat quality is primarily determined by the
presence of dense cover. Typically, more cover, more hare
sustainability. In order to evade predation, snowshoe hare require
brushy cover to provide visual obstruction to escape from avian and
terrestrial predators.
Snowshoe hare are somewhat opportunists and feed on a variety of
woody shrubs, tree species and other green vegetation, depending
upon season, range and species density.
Winter foods include saplings, twigs and branches from white
cedar, white spruce, balsam fir, white pine, red pine, white birch,
sugar maple, red maple, and aspen (sometimes called popple).
Summer diets include birches, aspens, willows, alders, sumacs,
dogwood, grasses, and clovers. In Michigan, intense browsing of
similar species by the overly profuse white-tailed deer population
has been identified as an associated threat to snowshoe hare
abundance as well.
Consider favoring the aforementioned tree, and shrub species
within your woodlot, should they exist, to enhance possible habitat
for snowshoe hare. Planting appropriate species for varying hare is
certainly another excellent option to consider, depending upon soil
type, current cover and future landowner goals.
Private landowners are key to conserving wildlife habitat.
Perhaps Lepus americanus will be your next beneficiary.
Mr. Myrick is a forester with the Michigan Department of
Natural Resources. He has a master’s degree in Wildlife Science from
Texas A&M University, and a bachelor’s degree in Conservation from
Northern Michigan University.
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