You are so out of touch with reality. How do you even perform the most basic
of social functions?
In my 50+ years, I have never seen or heard of anybody that is so totally
and utterly out of touch with reality. Your arrogance and ignorance combine
to make you completely unsuitable to render an opinion on anything. You
presume to suggest that the motivations of all persons that ride bikes are
the same as one person that rides a bike. That is the same as the ugliest of
views that fueled racial discrimination for so many decades -- if one person
is like this, then everybody that share the external qualitiy must be like
this. This is the height of absurdity.
Perhaps we shoulud assume that all PhD's are as stupid as you, or as narrow
minded, and we should make sure we don't spend any public money on PhD
programs anywhere in the country. Indeed, maybe we should look at suspending
any and all public funding for education beyond high school. Idiot.
"Mike Vandeman" <[email hidden]> wrote in message
news:[email hidden]...
Quoted message said:Frequently Asked Questions about Mountain Biking
Michael Vandeman, Ph.D.
March 5, 20041. Why do people mountain bike?
a. They say that using a bike allows them to get much farther, in the same
amount of time, than they can by walking. They also maintain constant
pressure
on land managers, to open more and more trails to bikes. Of course, all of
these
trails are already open to them, if they choose to walk. They also
frequently
claim that closing trails to bikes "excludes" them from the parks. This
could
only be true if they were unable to walk. Of course, they are able to
walk.
There's nothing inherently wrong with bicycling instead of walking; we all
like
to save energy, when it's appropriate. Use of a bicycle to replace
automobile
use is obviously beneficial. However, by the same token, replacing hiking
with
mountain biking is obviously not beneficial.
b. They are interested in the quantity of nature they can see, rather than
the
quality of their experience. While riding a bike, especially over terrain
as
rough as a trail, one has to be constantly paying attention to not
crashing.
That make it almost impossible to notice much else. By contrast, a hiker
feels
the ground, hears all the sounds and smells all the odors of nature and
can stop
instantly, if he/she finds something interesting. The brain thrives on
stimulation. A biker has to travel several times as far as a hiker, to get
the
same stimulation as a hiker. (And, by the same token, motorcyclists have
to
travel several times as far as a bicyclist, and an auto user several times
as
far as a motorcyclist, since they are enclosed in a metal box.)
c. They are interested in thrills. Riding a bike on a trail, especially a
trail
containing many obstacles, or a trail one is not familiar with, is very
challenging. (But if mountain biking is the high point of your week, as it
seems
to be for many mountain bikers, you must be leading a pretty dull life,
off of
the bike!)
d. They are interested in building mountain biking skills and competing
with
other mountain bikers. The thrill of racing drives people to spend more
money on
their bike, and ride it harder and more often. Racing, up to and including
the
Olympics, drives a lot of mountain biking. Of course, it is also extremely
harmful to the parks and natural areas that are used for practice! It is
hard to
think of any other (legal) use of public lands, other than hunting, that
is as
harmful as mountain biking.2. What is driving the sport of mountain biking? Besides the attraction
for
participants, manufacturers and retailers of mountain bikes and mountain
biking
accessories, as well as "adventure" travel guides, make a lot of money
from
promoting mountain biking. Even some auto manufacturers (e.g. Subaru)
promote
and sponsor mountain biking, and try to use its popularity to sell more
cars.
The tourism industry also promotes mountain biking, among other
attractions.3. What harm does mountain biking do?
a. Most obvious is the acceleration of erosion. Knobby tires rip into the
soil,
loosening it and allowing rain to wash it away. They also create V-shaped
grooves that make walking difficult or even dangerous. The mechanical
advantage
given by the gears and ball bearings allow a mountain biker to travel
several
times as fast as a hiker. Given their increased weight (rider plus bike),
this
results in vastly increased momentum, and hence much greater horizontal
(shearing) forces on the soil. (Witness the skid marks from stops, starts,
and
turns.) According to Newton, every action has an equal and opposite
reaction.
Mountain bikes were built much stronger than other bikes, so that they
could
withstand the greater forces they were subject to on rough trails. These
same
forces, therefore, are being applied to the trails! To give a definite
number,
the winner of a 20-mile race here in Briones Regional Park averaged 13 MPH
(the
speed limit is 15 MPH -- where were the park rangers?).
b. A hiker must be very careful not to accidentally step on small animals
and
plants on the trail. For a mountain biker, it is almost impossible to
avoid
killing countless animals and plants on and under the trail. They have to
pay
attention to controlling the bike, and can't afford to look carefully at
what is
on the trail, especially when travelling fast. And even if they happen to
see,
for example, a snake, it is hard for them to stop in time to avoid killing
it. A
hiker, when crossing a creek, will try to avoid getting wet, by crossing
on
stepping stones or logs. Mountain bikers, on the other hand, simply ride
right
through the creek bed, crushing any animals or plants that happen to be
there.
Mountain biking magazines are full of photos of mountain bikers throwing
up
spray, as they barrel through creeks. Not only do bikes destroy animals
and
plants as they ride across streams, they ride through streams stirring up
sediment. The sediment in the water interferes with the oxygen uptake by
aquatic
life, for example, killing fish- and frog eggs. Young fish, insects,
amphibians,
and aquatic microorganisms are extremely sensitive to sediment in water.
c. Bikes also allow people to travel several times as far as a hiker. This
translates into several times the impacts, both on the trail and on the
wildlife
(to say nothing of the other trail users). Existing parklands are already
inadequate to protect the wildlife that live there. When they are
crisscrossed
by mountain bikers and legal or illegal trails, their habitat becomes even
more
inadequate. Mountain bikers frequently advertise rides of 20-50 miles or
more.
Have you ever tried to walk that far in a day? In other words, allowing
bikes in
a park greatly increases human presence in that park and drives wildlife
further
from the resources that they need to survive, including water, food, and
mates.
d. Due to their width and speed, bikes can't safely pass each other on
narrow
trails. Therefore, policies that permit mountain biking also result in
more
habitat destruction, as trails are widened by bikers (or by hikers and
equestrians jumping out of their way).
e. Knobby mountain bike tires are ideal for carrying mud, and consequently
exotic plants, fungi, and other organisms from place to place, resulting
in the
spread of exotic invasive species, such as weeds and Sudden Oak Death.
f. Mountain biking is driving the very young and old off of the trails and
hence
out of the parks. Even able-bodied hikers and equestrians fear for their
safety,
and don't enjoy sharing the trails with bikes. (The mountain bikers claim
that
they are simply being selfish and "unwilling to share", but actually they
have
no problem sharing trails with mountain bikers; it is only their bikes
that are
a problem!)
g. Mountain bikes, which are obviously built to go anywhere, teach
children and
anyone else who sees them that the rough treatment of nature is
acceptable. This
undoubtedly has a negative effect on people's treatment of nature.
h. In order to mitigate bike-caused erosion, park managers have been
resorting
to extreme measures -- even in some cases putting a plastic matrix or
other
exotic material under the trail (e.g. in Pleasanton Ridge Regional
Preserve,
near Pleasanton, California)! It's hard to imagine that this will have a
beneficial effect on the park and its wildlife..
i. Allowing mountain bikes in a park greatly increases the damage to the
trails,
damage from "bootleg" (illegally created) trails, and the problems of
conflicts
between trail users, and hence the cost of maintaining the park.
Considering how
tight park budgets are, we can't afford the extra costs of policing, and
repairing the damage from, mountain biking.
j. For the science on mountain biking and its impacts on wildlife and
people,
see http://home.pacbell.net/mjvande/scb7.htm.4. Mountain bikers claim that their sport has no greater environmental
impact
than hiking. Is that true? If you read the "studies" that make that claim,
you
find that they don't really compare the impacts of hiking and mountain
biking,
but only the impacts per foot. If, for a moment, we assume that the
studies are
correct in their having equivalent impacts per foot, it would still follow
that
mountain biking has far greater impact per person, since mountain bikers
typically travel so much farther than hikers. Besides overlooking
distances
travelled, those "studies" almost all ignore impacts on wildlife. And they
don't
study mountain biking under normal conditions -- only at a very slow
speed.
Actually, the comparison with hiking is irrelevant. It would only be
relevant if
we planned to allow only one of the two, and were considering which of the
two
is more harmful. In fact, no one is considering banning hiking. We are
only
considering adding mountain biking. Therefore, the only relevant question
is,
"Is mountain biking harmful"? (Of course, it is!) There is only one truly
scientific study that I know of that compares the impacts of hiking and
mountain biking. It found that mountain biking has a greater impact on elk
than
hiking (Wisdom, M. J., H. K. Preisler, N. J. Cimon, B. K. Johnson. 2004.
Effects
of Off-Road Recreation on Mule Deer and Elk. Transactions of the North
American
Wildlife and Natural Resource Conference 69: in press.)5. Where should mountain biking allowed? A couple of role models for
wildlife
protection are Yosemite National Park and East Bay Municipal Utility
District
(in Alameda and Contra Costa counties, California). They both restrict
bicycles
to paved roads, where they can't do much harm. Somehow bicyclists have
managed
to enjoy their sport for over a hundred years, without riding off-road.6. What should the policy be on trails? Closed to bikes, unless marked
open.
Signs that say "No Bikes" are quickly and repeatedly ripped out of the
ground by
mountain bikers.7. Isn't it discriminatory to allow hikers and equestrians on trails, but
not
mountain bikers? Mountain bikers love to say this, apparently because they
think
it will gain them some sympathy. The truth is that mountain bikers have
exactly
the same access to trails that everyone else has! It is only their bikes
that
are banned. If mountain bikers were really being discriminated against,
they
could easily go to court to gain access. However . they already have
access to
every trail in the world!8. Don't I have a right to mountain bike on all public lands? I am a
taxpayer!
The public has the right, through its elected representatives, to restrict
how
land is used. A federal court has already ruled that there is no right to
mountain bike. It is a privilege, and any land manager who gives a good
reason
(such as safety or protecting the environment) can keep bikes off of
trails (see
http://home.pacbell.net/mjvande/mtb10.htm).9. Don't mountain bikers do some good things, like trail construction and
trail
maintenance? Trail construction destroys wildlife habitat both directly
(by
killing plants and animals) and indirectly (by reducing the size of the
intervening "islands" of habitat). Moreover, mountain bikers favor trails
that
are "twisty" (sinuous), bumpy, and full of obstacles that provide thrills
for
mountain bikers. Such designs increase habitat destruction (by lengthening
the
trail) and make the trails less useful for hikers and equestrians. Trail
maintenance sounds good, until you realize that it would hardly be
necessary, if
bikes weren't allowed there. The mountain bikers are the main reason why
trail
maintenance is necessary! Trails used only by hikers require hardly any
maintenance. Therefore, admitting bicycles to a park greatly increases its
cost
of maintenance. Nothing is really "free", including trail construction and
maintenance. (How does the saying go? "Beware of Trojans bearing gifts"?)10. But don't mountain bikers provide added safety, by being able to
quickly
summon help in the event of an emergency? I would rather trust in a cell
phone,
than a speeding mountain biker. Besides, natural areas are already one of
the
safest places you can be. In over 50 years of hiking and backpacking, I
have
never witnessed any situation requiring emergency aid. Most people go to
natural
areas partly for solitude. If we wanted to be around large, fast-moving
pieces
of machinery, we would stay in the city!11. Can't mountain biking help get our overweight kids off the couch?
Hiking can
already do that, without causing extra harm to wildlife and people.
Mountain
biking downhill provides zero exercise benefit. Mountain biking on level
ground
provides minimal exercise benefit, much less than walking. Since it's
impossible
to pay any attention to your surroundings while mountain biking (or you
will
crash), there's no reason to promote mountain biking. It benefits only
those who
stand to make money off of it, such as bike manufacturers, retailers, and
tour
companies.12. Doesn't mountain biking get people out of their cars? So do walking,
road
cycling, and transit use, without harm to the natural environment. Since
very
few mountain biking opportunities are within easy bicycling distance, the
vast
majority of mountain bike trips require transporting the bike in a truck,
SUV,
or car. If mountain bikers cared about the environment, they would bicycle
to
the park, lock their bike at the trailhead, and hike. Or simply bicycle on
paved
roads, as bicyclists have for the past century.===
I am working on creating wildlife habitat that is off-limits to
humans ("pure habitat"😉. Want to help? (I spent the previous 8
years fighting auto dependence and road construction.)