Environmental News
Environmental News from Boulder, Colorado
Work begins on a county master plan for mountain trails network
Apr 4th
Public hearings to begin April 18
Boulder County, Colo. – Local, state, and federal land-management agencies, to include the U.S. Forest Service, National Park Service, Colorado Parks & Wildlife, Boulder County, City of Boulder, and City of Longmont are partnering to develop a long‐term, multi‐agency master plan for a network of access points and travel corridors for non‐motorized users in the foothills and mountains of Boulder County.
What: Regional Mountain Trails Master Planning
When: Meetings will be held from mid-April to mid-May, the first meeting will be held on April 18, 6:30 – 8:00 p.m.
Where: Eleven locations throughout the county, the first meeting will be held at the Boulder County Courthouse, 1325 Pearl Street, 3rd floor
The goal of the Regional Mountain Trails Master Plan is to connect communities and recreation areas in the mountains and foothills to regional trails in the plains. The plan will emphasize linking existing trails and trail systems.
“We are excited to collaborate with the community and our fellow land managers on this plan for trails that will direct our work as individual organizations toward a common goal for trails over the coming years,” said Justin Atherton-Wood, Resource Planner for Boulder County Parks and Open Space. “This plan will be drafted in a manner that is sensitive to the resources and values unique to this part of the region, and one that contributes to a more sustainable future for Boulder County.”
To help define the many unique opportunities and challenges of this effort, the partners are initiating a period of public outreach this spring to gather comments on the community’s needs, expectations, and concerns with the project. It is anticipated that this initial phase will result in a set of principles and community values that will guide the remainder of this year-long planning process.
For more information about the project and upcoming meeting dates and locations visit the project website:www.RegionalMountainTrails.com. Or contact Garry Sanfaçon, Public Outreach Coordinator, at 720-564-2642 or gsanfacon@bouldercounty.org.
by –BoulderCounty.org–
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CU study: 66 million years ago, an asteroid turned Earth into a crispy critter
Mar 27th
A new look at conditions after a Manhattan-sized asteroid slammed into a region of Mexico in the dinosaur days indicates the event could have triggered a global firestorm that would have burned every twig, bush and tree on Earth and led to the extinction of 80 percent of all Earth’s species, says a new University of Colorado Boulder study.
Led by Douglas Robertson of the Cooperative Institute for Research in Environmental Sciences, or CIRES, the team used models that show the collision would have vaporized huge amounts of rock that were then blown high above Earth’s atmosphere. The re-entering ejected material would have heated the upper atmosphere enough to glow red for several hours at roughly 2,700 degrees Fahrenheit — about the temperature of an oven broiler element — killing every living thing not sheltered underground or underwater.
The CU-led team developed an alternate explanation for the fact that there is little charcoal found at the Cretaceous-Paleogene, or K-Pg, boundary some 66 million years ago when the asteroid struck Earth and the cataclysmic fires are believed to have occurred. The CU researchers found that similar studies had corrected their data for changing sedimentation rates. When the charcoal data were corrected for the same changing sedimentation rates they show an excess of charcoal, not a deficiency, Robertson said.
“Our data show the conditions back then are consistent with widespread fires across the planet,” said Robertson, a research scientist at CIRES, which is a joint institute of CU-Boulder and the National Oceanic and Atmospheric Administration. “Those conditions resulted in 100 percent extinction rates for about 80 percent of all life on Earth.”
A paper on the subject was published online this week in the Journal of Geophysical Research-Biogeosciences, a publication of the American Geophysical Union. Co-authors on the study include CIRES Interim Director William Lewis, CU Professor Brian Toon of the atmospheric and oceanic sciences department and the Laboratory for Atmospheric and Space Physics and Peter Sheehan of the Milwaukee Public Museum in Wisconsin.
Geological evidence indicates the asteroid collided with Earth about 66 million years ago and carved the Chicxulub crater in Mexico’s Yucatan Peninsula that is more than 110 miles in diameter. In 2010, experts from 33 institutions worldwide issued a report that concluded the impact at Chicxulub triggered mass extinctions, including dinosaurs, at the K-Pg boundary.
The conditions leading to the global firestorm were set up by the vaporization of rock following the impact, which condensed into sand-grain-sized spheres as they rose above the atmosphere. As the ejected material re-entered Earth’s atmosphere, it dumped enough heat in the upper atmosphere to trigger an infrared “heat pulse” so hot it caused the sky to glow red for several hours, even though part of the radiation was blocked from Earth by the falling material, he said.
But there was enough infrared radiation from the upper atmosphere that reached Earth’s surface to create searing conditions that likely ignited tinder, including dead leaves and pine needles. If a person was on Earth back then, it would have been like sitting in a broiler oven for two or three hours, said Robertson.
The amount of energy created by the infrared radiation the day of the asteroid-Earth collision is mind-boggling, said Robertson. “It’s likely that the total amount of infrared heat was equal to a 1 megaton bomb exploding every four miles over the entire Earth.”
A 1-megaton hydrogen bomb has about the same explosive power as 80 Hiroshima-type nuclear bombs, he said. The asteroid-Earth collision is thought to have generated about 100 million megatons of energy, said Robertson.
Some researchers have suggested that a layer of soot found at the K-Pg boundary layer roughly 66 million years ago was created by the impact itself. But Robertson and his colleagues calculated that the amount of soot was too high to have been created during the massive impact event and was consistent with the amount that would be expected from global fires.
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Teens and adults can apply for summer jobs with Boulder County Youth Corps
Mar 19th
The Youth Corps offers one of the best first-job opportunities available in Boulder County. Teams have completed projects such as constructing nearly a mile of trail at Walden Ponds Wildlife Habitat, replacing the residential fence at a Boulder County low-income housing development in Louisville and preserving the McDonald Cabin at Betasso Preserve Open Space. Parks and Open space is now accepting applications for Youth Corps members and team leaders.
Who: The Youth Corps will hire 180 teenagers to work 30 hours per week.
- Boulder County residents ages 14-17 have until Friday, March 29 to apply for summer jobs with the Boulder County Youth Corps. Boulder County is especially in need of female Corps members.
- Applicants can apply online at http://www.bouldercounty.org/youthcorps. Applications can also be picked up at counseling offices in Boulder Valley and St. Vrain Valley schools; city and town personnel offices; most local recreation and youth centers and libraries; and the Boulder County Human Resources Department, 2025 14th St. in Boulder.
What: Corps members will work on a variety of community service projects such as forest thinning, historic preservation, construction and repair of fencing, trail maintenance, removal of Russian olive trees and noxious weeds, landscaping and replacing light bulbs with compact fluorescents.
When: Youth Corps members are expected to work Monday through Thursday, from June 10 to July 31.
Where: Teams will work in unincorporated Boulder County as well as in cities and towns within Boulder County.
Compensation: This year, Corps members will earn a starting wage of $7.78/hour, with the possibility of earning a $100 bonus at the end of the program based on merit and strong attendance.
- Teens who have worked for the Corps in past years can earn up to $8.28/hour.
- Corps members are eligible for reimbursement for the purchase of work boots and gloves.
- RTD bus passes for the purpose of traveling to and from centralized work meeting places may be subsidized.
The Youth Corps is also hiring team leaders, who must be high school graduates at least 21 years old with two years of college coursework or more, among other qualifications. A list of full qualifications is available online. Team Leaders start at $13.50/hour. These positions remain open until filled.
For more information, visit http://www.bouldercounty.org/youthcorps or call the Youth Corps office at 303-678-6104.
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