A scientific computer mapping analysis released by the Western Native Trout
Campaign today demonstrates that native trout species in the western United
States are strongly correlated with the region’s remaining roadless areas. If
the federal roadless policy adopted in 2000 is withdrawn, many populations of
native trout will likely become extinct.
The report, Imperiled Western Trout and the Importance of Roadless
Areas, used sophisticated geographic information systems to map out the
locations of eight native trout species and federal roadless areas. It found a
very strong correlation between “strong” fish populations and roadless areas: Gila
trout (99%), greenback cutthroat trout (75%), bull trout (76%), westslope cutthroat
trout (71%), Colorado River cutthroat trout (62%), Rio Grande cutthroat trout
(39%), Bonneville cutthroat trout (32%) and redband trout (17%).
Despite their ecological importance, at least 2.8 million acres of inventoried
roadless areas on U.S. Forest Service lands have been lost to road construction
over the last 20 years. Millions more have been lost on BLM lands and in smaller,
uninventoried roadless tracts. Another 34.3 million acres of inventoried roadless
areas on public lands are vulnerable to road construction under existing
regulations.
“This report shows us that roadless areas provide a refuge for the strongest
surviving populations of native trout,” says David Bayles, conservation director
for Pacific Rivers Council. “These refuges are sacred ground for native trout.
We must defend them from oil and gas drilling, logging, mining, grazing, road
building or anything else that would harm these last best places.”
“Native trout and wilderness are nearly synonymous,” said Kieran Suckling,
Executive Director of the Center for Biological Diversity, “you can’t have one
without the other. It is imperative that we not build more roads into America’s
last remaining wild places, too many trout populations are already extinct.”
The recently formed Western Native Trout
Campaign is a coalition of conservation and angling organizations
dedicated to conducting scientific studies and public education about native
trout and their habitats. Members include the Center for Biological Diversity
(Tucson, AZ), Pacific Rivers Council (Eugene, OR), and Biodiversity Conservation Alliance
(Laramie, WY).
Today’s report is the first of many research projects the Trout Campaign will
address in coming years. It is the most comprehensive and examination to date of
the status of eight native trout species and their association with roadless
areas. These species range throughout the Rocky Mountain West from Oregon to
Arizona, Nevada to Montana. The report has two primary findings:
One: Stronger populations of native trout are now found in a only a tiny
fraction of their historic ranges. Using computerized spatial analysis, the
report found that stronger populations of seven of the eight species analyzed now
occupy less than 6% of their historic range and three species now occupy less
than 1% of their historic range. (“Stronger” populations refers to those areas
where native trout are most abundant or most genetically pure.) Two species
outside of the analysis, the Alvord cutthroat and yellowfin cutthroat, are
already extinct. Roads and associated activities are a major cause of habitat
degradation that has triggered these declines.
Two: Most stronger remaining native trout populations are found in
roadless areas with the stronger populations of some species almost exclusively
limited to roadless areas.
Together, these findings indicate that the protection of roadless areas is
essential to the continued existence of native trout.
Chris Frissell, Ph.D., Aquatic Ecologist with Pacific Rivers Council, says,
“Management plans that fail to preserve these key roadless lands place native
trout in jeopardy. Scientific studies have shown that roads pose many serious
threats to native trout, but this report is the first hard look at the sweeping
scale at which roadless areas are important across the West.”
“It’s time to stop ignoring the science in our public policy decisions
regarding both roadless areas and native trout. Native trout and roadless areas
are irreplaceable parts of our natural heritage that need complete protection,”
said Jeff Kessler, Conservation Director of the Biodiversity Conservation Alliance.
Jon Rhodes, Aquatic Scientist with the Center for Biological Diversity says,
“Our report is the most comprehensive assessment of its kind. It shows that
roadless area protection is vital, if people are to see or catch native trout
in the future.” Rhodes also states, “ This report explodes the myth that native
trout flourish in watersheds degraded by roads.”
In July 2001, the Bush administration re-opened the rule-making process on
the Forest Service’s Roadless Area Conservation Rule, which had closed 58
million acres of inventoried roadless areas to road building. During the
public comment period for the original rule, the Forest Service received an
estimated 2 million comments — the most of any federal project in U.S. history.
The vast majority of these comments supported increased roadless area
protection.
The Western Native Trout Campaign recommends that the previous roadless
policy be expanded to protect all roadless areas greater than 1,000 acres,
as recommended by aquatic scientists since 1994. The previous roadless rule
protected only areas greater than 5,000 acres, which is inadequate to protect
trout.
The Western Native Trout Campaign report also concludes that protecting
existing roadless habitat from harmful practices like roads, logging and
grazing is far more effective, biologically and economically, than attempts
to restore habitat after it has been damaged.
“The bottom line is that if we don’t protect roadless areas, we will continue
to lose trout populations in the last strongholds of the West,” said David
Bayles of the Pacific Rivers Council.