Download or read book Biological Evaluation of Spruce Beetle and Mountain Pine Beetle Activity in the Sierra Madre Analysis Area on the Parks Ranger District Medicine Bow Routt National Forests and Thunder Basin National Grassland 2006 written by and published by . This book was released on 2006 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Evaluation of Mountain Pine Beetle and Spruce Beetle Activity in the Larson II Analysis Area on the Hahns Peak Bears Ears Ranger District Medicine Bow Routt National Forests and Thunder Basin National Grassland 2006 written by and published by . This book was released on 2006 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Evaluation of Spruce Beetle and Mountain Pine Beetle Activity on the French Creek Analysis Area of Brush Creek Hayden Ranger District Medicine Bow Routt National Forests and Thunder Basin National Grassland 2005 written by Robert J. Cain and published by . This book was released on 2005 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Evaluation of Spruce Beetle and Mountain Pine Beetle Activity on the French Creek Analysis Area of Brush Creek Hayden Ranger District Medicine Bow Routt National Forests and Thunder Basin National Grassland 2005 written by and published by . This book was released on 2005 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engelmann spruce mortality due to spruce beetle (SB) and lodgepole pine mortality due to mountain pine beetle (MPB) beetle have been increasing for several years within the French Creek watershed on the Medicine Bow-Routt National Forests and Thunder Basin National Grasslands. Widespread epidemic populations of both bark beetle species are occurring on National Forest Lands to the south. The Brush Creek Hayden Ranger District has designated a French Creek Analysis Area and is considering a variety of silvicultural activities to remove beetle-infested and dead trees and to mitigate SB impacts on approximately 2,700 acres of spruce-fir forest and MPB impacts on about 700 acres of lodgepole pine forests.‍?Lakewood Service Center-Forest Health Management (LSC-FHM) personnel used aerial survey information for the Medicine Bow Mountains and ground survey of six of the proposed management units in the spruce-fir component of the French Creek Analysis Area to determine the level of beetle infestation in these areas. Ground surveys recorded the number of trees infested with SB in 2004 and 2003. Results indicate an increasing population trend. The 2004:2003 ratio averaged 4:1 for all six units surveyed and ranged from 0:0 to 19:1. Additional ground survey of proposed treatment areas in the lodgepole pine component of the analysis area are planned to be conducted in spring of 2005.‍?Variable radius plots measured during ground surveys and available stand exam data were used to determine stand susceptibility to SB. Stands were risk rated using a rating system developed by Schmid and Frye (1976). Risk rated stands ranged from medium to medium high risk. Site index was the only moderating factor for many of the higher risk stands. Given the average tree size, stand density and abundance of spruce in the stands, and the concurrence of rapidly increasing SB populations trending toward epidemic levels, these units are likely to sustain major losses to SB over the course of an epidemic.‍?Management actions to address the SB infestation occurring in the French Creek Analysis Area are discussed. A supplement to this biological evaluation will be prepared to address the MPB infestation occurring in the French Creek Analysis Area once ground surveys of the lodgepole pine areas are completed.

Download or read book Biological Evaluation of Mountain Pine Beetle Activity on the Rock Creek Analysis Area of Yampa Ranger District Medicine Bow Routt National Forests and Thunder Basin National Grassland 2005 written by Robert J. Cain and published by . This book was released on 2005 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Evaluation of Mountain Pine Beetle Activity on the Green Ridge Analysis Area of Parks Ranger District Medicine Bow Routt National Forests 2003 written by Robert J. Cain and published by . This book was released on 2003 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Evaluation of Mountain Pine Beetle Activity on the Green Ridge Analysis Area Parks Ranger District Medicine Bow Routt National Forest 2003 written by Robert J. Cain and published by . This book was released on 2003 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Medicine Bow Routt National Forests N F Bark Beetle Analysis written by and published by . This book was released on 2002 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Evaluation of Spruce Beetle and Mountain Pine Beetle for the Brush Creek Hayden Ranger District Medicine Bow Routt National Forests 2000 and 2001 written by Carl L. Jorgensen and published by . This book was released on 2002 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Evaluation of Mountain Pine Beetle Activity in the Little Snake Analysis Area on the Hahns Peak Bears Ears Ranger District Medicine Bow Routt National Forests and Thunder Basin National Grassland 2006 written by and published by . This book was released on 2006 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Evaluation of the Spruce Beetle and Mountain Pine Beetle for the Brush Creek Hayden Ranger District Medicine Bow Routt National Forests 2000 2001 written by Carl L. Jorgensen and published by . This book was released on 2002 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Evaluation of Spruce Beetle and Mountain Pine Beetle for the Hahns Peak Bears Ears and Parks Ranger Districts Medicine Bow Routt National Forests 2003 written by Carl L. Jorgensen and published by . This book was released on 2003 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Evaluation of Spruce Beetle and Mountain Pine Beetle for the Hahns Peak Bears Ears and Park Ranger Districts Medicine Bow Routt National Forests 2003 written by Carl L. Jorgensen and published by . This book was released on 2003 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Evaluation of Mountain Pine Beetle Activity on the Upper Fraser Analysis Area of Sulphur Ranger District Arapaho Roosevelt National Forest and Pawnee National Grassland 2005 written by and published by . This book was released on 2005 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Final Environmental Impact Statement written by United States. Forest Service and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Evaluation of Mountain Pine Beetle Activity in the Dillon Reservoir and Lower Blue Analysis Areas of the Dillon Ranger District White River National Forest 2006 written by and published by . This book was released on 2006 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Evaluation of Mountain Pine Beetle Activity on the Upper Fraser Analysis Area of Sulphur Ranger District Arapaho Roosevelt National Forests and Pawnee National Grassland 2005 written by and published by . This book was released on 2005 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mountain pine beetle (MPB) epidemic in Grand County, Colorado, started in 1997 in the Williams Fork and Troublesome watersheds. Over the past seven years, losses of lodgepole pine to mountain pine beetle increased in these areas until most of the trees had been killed. Beginning in 2000, MPB-killed trees began to be detected in the Upper Fraser watershed. By 2004 large areas of lodgepole pine had been infested and killed by this beetle. The Sulphur Ranger District, on the Arapaho-Roosevelt National Forests and Pawnee National Grassland, is considering a variety of silvicultural treatments on approximately 2,400 acres of forest land to manage MPB impacts and remove beetle-infested and killed trees in designated areas in the Upper Fraser Analysis Area.‍?Lakewood Service Center Forest Health Management (LSC-FHM) surveyed ten of the proposed management units in the Upper Fraser Analysis Area to determine the level of mountain pine beetle infestation in these areas. LSC-FHM utilized aerial survey data and conducted on the ground surveys using strip samples and systematic variable radius plots. Ground surveys recorded the number of trees infested with mountain pine beetle in 2004 and the number of MPB-killed trees in 2003. Stand exam data also were used to determine stand susceptibility ratings for the management units.‍?Summary results from the aerial survey data indicated a rapid increase in MPB related mortality across the Upper Fraser Analysis Area over the last two years. The estimated area affected by MPB-caused mortality increased from 98 acres in 2002, to 1,588 acres in 2003, and 2,934 acres in 2004. Survey results estimate that the number of trees killed increased from 99 in 2002, to 656 in 2003, and 8,985 in 2004.‍?Ground survey data for the ten management units indicated that the MPB epidemic in the Upper Fraser Analysis Area is rapidly expanding in all management units, with a rapidly increasing number of trees infested and killed by the beetle. The number of MPB-infested trees ranged from 3 to 68 trees per acre. The 2004:2003 ratio of the number of trees infested by MPB ranged from 1.4:1 to 10.8:1, with nine of ten management units exceeding 3:1. The 2004:2003 ratio averaged over all ten units was 4.9:1.‍?Average tree diameter, tree age, tree density, and elevation for the ten management units indicate that the associated stands are highly susceptible to MPB infestation. Given the abundance of MPB within the management units and concurrence of stand characteristics that favor MPB infestation, these units are all likely to sustain major losses to MPB over the course of this epidemic. Management actions to address the MPB infestation occurring in the Upper Fraser Analysis area are discussed.