“What Do I Get out of This?” by Brian Kurzel, Natural Areas Coordinator Ou Aren’T the First to Ask This Question of the Colorado Natural Area Yprogram (CNAP)
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Valles Uccs 0892N 10345.Pdf (5.476Mb)
GEOGRAPHY OF NITRATE AND SULFATE ATMOSPHERIC WET DEPOSITION IN THE SOUTHERN ROCKY MOUNTAINS by IVAN GUILLERMO VALLES B.S., Colorado State University—Pueblo, 2005 A thesis submitted to the Graduate Faculty of the University of Colorado Colorado Springs in partial fulfillment of the requirements for the degree of Master of Arts Department of Geography and Environmental Studies 2018 © 2018 IVAN GUILLERMO VALLES ALL RIGHTS RESERVED ii This thesis for the Master of Arts degree by Ivan Guillermo Valles has been approved for the Department of Geography of Environmental Studies by Curtis D. Holder, Chair Steve Jennings Brandon Vogt Date January 27, 2018 iii Valles, Ivan Guillermo (M.A., Applied Geography) Geography of Nitrate and Sulfate Atmospheric Wet Deposition in the Southern Rocky Mountains Thesis directed by Professor Curtis Holder. ABSTRACT Data from the National Atmospheric Deposition Program’s National Trends Network, the United States Geological Survey’s Rocky Mountain Regional Snowpack Chemistry Program and the United States Environmental Protection Agency’s Air Markets Program were analyzed to identify spatial relationships amongst atmospheric wet deposition concentrations of nitrate and sulfate. The analysis relates atmospheric wet deposition, commonly known as acid rain, to two distinct variables—as a function of elevation and also as a function of proximity to major regional electricity generating stations. This study focuses on the Southern Rocky Mountain region of the United States, and integrates depositional and emissions point-source data from Arizona, Colorado, New Mexico, Utah, and Wyoming. Previous studies have identified wide-ranging adverse effects upon terrestrial and aquatic ecosystems such as nitrogen saturation, changes in plant biodiversity, and soil nutrient cycling where atmospheric wet deposition is the suspected primary means of pollutant transport and delivery. -
Hinsdale County Hazard Mitigation Plan 2019 Update
Hinsdale County Hazard Mitigation Plan 2019 Update November 2019 Hinsdale County Hazard Mitigation Plan 2019 Update November 2019 Table of Contents TABLE OF CONTENTS SECTION 1 - INTRODUCTION ............................................................................................................................ 1-1 1.1 Purpose .................................................................................................................................................................................... 1-1 1.2 Background and Scope ...................................................................................................................................................... 1-1 1.3 Multi-Jurisdictional Planning ........................................................................................................................................... 1-2 1.4 Plan Organization ................................................................................................................................................................. 1-2 SECTION 2 – COMMUNITY PROFILE ................................................................................................................................... 2-1 2.1 Geography and Climate ..................................................................................................................................................... 2-1 2.2 History ..................................................................................................................................................................................... -
High Country Conservation Advocates the Wilderness Society Center
High Country Conservation Advocates ● The Wilderness Society ● Center for Biological Diversity ● Rocky Smith ● EcoFlight ● Great Old Broads for Wilderness ● Rocky Mountain Wild ● Colorado Native Plant Society ● Rocky Mountain Recreation Initiative ● Wild Connections ● Quiet Use Coalition ● Central Colorado Wilderness Coalition ● San Luis Valley Ecosystem Council November 18, 2019 Brian Stevens Team Leader BLM Gunnison Field Office 210 West Spencer Ave., Suite A Gunnison, CO 81230 Via email to [email protected] Re: North Powderhorn Fuels Project Dear Mr. Stevens: The following are the comments of High Country Conservation Advocates (HCCA), The Wilderness Society, Center for Biological Diversity, Rocky Smith, EcoFlight, Great Old Broads for Wilderness, Rocky Mountain Wild, Colorado Native Plant Society, Rocky Mountain Recreation Initiative, Wild Connections, Quiet Use Coalition, Central Colorado Wilderness Coalition, Center for Biological Diversity, and San Luis Valley Ecosystem Council on the proposed North Powderhorn Fuels Project, as described in the Scoping Letter (SL) of October 18, 2019 and the Draft Proposed Action and Alternatives (DPAA). HCCA is located in Crested Butte, Colorado and has over 900 members. HCCA was founded in 1977 to protect the health and natural beauty of the land, rivers, and wildlife in and around Gunnison County now and for future generations. Thank you for the opportunity to comment on this proposal. We may be able to support Alternative C should the agency provide more information clearly indicating that treatments outside of the wilderness and WSAs could be justified and, with mitigation, be acceptable.1 We could also support an alternative that allows non-motorized prescribed burning in ponderosa stands within the Powderhorn Wilderness and Wilderness Study Areas, if such treatments would result in treated areas resembling what would exist if natural fire disturbances had been allowed to occur. -
Inside: Emergence of the Aerobic Biosphere During the Archean-Proterozoic Transition: Challenges of Future Research, by Victor A
VOL. 15, No. 11 A PUBLICATION OF THE GEOLOGICAL SOCIETY OF AMERICa NOVEMBER 2005 Inside: Emergence of the aerobic biosphere during the Archean-Proterozoic transition: Challenges of future research, by Victor A. Melezhik et Al., p. 4 Section Meetings: Cordilleran, p. 12 Rocky Mountain, p. 15 VoluMe 15, NuMbeR 11 NOveMbeR 2005 Cover: Paleoproterozoic (2200 Ma) lacustrine dolostone from the Pechenga Greenstone belt, northeast Fennoscandian Shield. Width of field is 15 cm. The laminated red (oxidized) dolostone is anomalously enriched in 13C (δ13C = +8‰), while the overlying material, representing the oldest known traver- GSA TODAY publishes news and information for more than tines in the world, are 13C-depleted (δ13C = −7‰). Note that 18,000 GSA members and subscribing libraries. GSA Today these rocks have experienced greenschist-facies metamor- lead science articles should present the results of exciting new phism. The 13C-rich dolostones from the Fennoscandian Shield research or summarize and synthesize important problems exemplify the evidence for an extreme global perturbation to or issues, and they must be understandable to all in the earth the carbon cycle at this time, although interpretation of these science community. Submit manuscripts to science editors 13 Keith A. Howard, [email protected], or Gerald M. Ross, lacustrine rocks in terms of a global marine δ C excursion is [email protected]. not straightforward. See “emergence of the aerobic biosphere during the Archean-Proterozoic transition: Challenges of future GSA TODAY (ISSN 1052-5173 USPS 0456-530) is published 11 research,” by Victor A. Melezhik et al., p. 4–11. times per year, monthly, with a combined April/May issue, by The Geological Society of America, Inc., with offices at 3300 Penrose Place, Boulder, Colorado. -
Surface and Subsurface Dynamics of a Perennial Slow-Moving Landslide from Ground, Air and Space
Submitted to Nature Communication Surface and subsurface dynamics of a perennial slow-moving landslide from ground, air and space Xie Hu1*, Roland Bürgmann1, William H. Schulz2, and Eric J. Fielding3 1 Department of Earth and Planetary Science, University of California, Berkeley, California, USA 2 U.S. Geological Survey, Denver, CO, USA 3 Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA Correspondence to: [email protected] This is a non-peer reviewed pre-print submitted to EarthArXiv. This paper has been submitted to Nature Communication for review. 1 Submitted to Nature Communication Landslides modify the natural landscape and cause fatalities and property damage worldwide. Quantifying landslide dynamics is challenging due to the stochastic nature of the environment. With its large area of ~1 km2 and perennial motions at ~10-20 mm/day, the Slumgullion landslide in Colorado, USA represents an ideal natural laboratory to better understand landslide behavior. Here we use hybrid remote sensing data and methods to recover the four-dimensional surface motions during 2011-2018. We resolve a new mobile area of ~0.35 km2 below the crest of the prehistoric landslide. We construct a mechanical framework to quantify the rheology, subsurface channel geometry, mass flow rate, and spatiotemporally dependent pore-water pressure feedback through a joint analysis of displacement and hydrometeorological measurements from ground, air and space. Variations in recharge, mainly from snowmelt, drive multi-annual decelerations and accelerations, during which the head of the landslide is the most responsive. Our study demonstrates the importance of remotely characterizing often inaccessible, dangerous slopes to better understand landslide mechanisms, landscape modification, and other quasi-static mass fluxes in natural and industrial environments, and will ultimately help reduce landslide hazards. -
Papilio Series) 2006
(NEW April 28 PAPILIO SERIES) 2006 TAXONOMIC STUDIES AND NEW TAXA OF NORTH AMERICAN BUTTERFLIES by James A. Scott (also editor), Michael S. Fisher, Norbert G. Kondla, Steve Kohler, Crispin S. Guppy, Stephen M. Spomer, and B. Chris Schmidt Abstract. New diversity is reported and discussed among North American butterflies. Several dozen new taxa are named. A new "sibling" species has been found to occur throughout the Rocky Mts., introducing a new butterfly species to most states in western U.S. and to southern Alberta and BC. Several taxa of Colias, Euphydryas, Lycaena, and Plebejus are raised to species status. Many nam.e changes are made, and many taxa are switched between species to create several dozen new combinations. The relevance of species concepts to difficult groups of butterflies is explored. Introduction This paper consists of miscellaneous taxonomic studies on North American butterflies, some in the northeast, but mostly in the west. Most of the diversity of butterfly fauna in North America is in the western mountainous areas, where the human population is lower, so it has taken longer to study western butterflies, and a lot more study is needed. We have made new findings on many wes.tern butterflies, and this progress is reported below. And Scott recently moved his collection out of old dermestid-infested drawers into fine very-tight ones that those beetles cannot enter, and in the process of resorting them found a dozen unnamed subspecies, which are named below. As we study our butterflies and learn more and more about them, a disturbing pattern has emerged. -
The Wilderness Society Defenders Of
The Wilderness Society ● Defenders of Wildlife ● High Country Conservation Advocates ● Wilderness Workshop ● Rocky Mountain Wild ● Great Old Broads for Wilderness ● Western Colorado Congress ● Ridgway Ouray Community Council ● Sheep Mountain Alliance ● Quiet Use Coalition ● Conservation Colorado ● Rocky Smith January 17, 2017 The Wilderness Society, Defenders of Wildlife, High Country Conservation Advocates, Wilderness Workshop, Rocky Mountain Wild, Great Old Broads for Wilderness, Western Colorado Congress, Ridgway Ouray Community Council, Sheep Mountain Alliance, Quiet Use Coalition, Conservation Colorado and Rocky Smith are pleased to present the following comments for consideration and incorporation in the assessment phase of the Grand Mesa- Uncompahgre-Gunnison (GMUG) National Forest Land and Resource Management Plan revision. The mission of The Wilderness Society (TWS) is to protect wilderness and inspire Americans to care for our wild places. The GMUG National Forest has long been a priority for TWS. Since its founding in 1935, TWS has worked closely with diverse interests who care about the future of our national forests. We provide scientific, legal, and policy guidance to land managers, communities, local conservation groups, and state and federal decision-makers aimed at ensuring the best management of our public lands. Our 700,000 members and supporters nationwide and, in particular, our more than 19,220 members and supporters in Colorado are deeply interested in forest planning as it pertains to the conservation, restoration, and protection of wildlands, wildlife, water, recreation, and the ability to enjoy public lands for inspiration and spiritual renewal. Defenders of Wildlife (Defenders) is a national non-profit conservation organization founded in 1947 focused on conserving and restoring native species and the habitat upon which they depend. -
2017 Briefing Book Colorado Table of Contents Colorado Facts
U.S. Department of the Interior Bureau of Land Management 2017 Briefing Book Colorado Table of Contents Colorado Facts .......................................................................................................................................................................................... 1 Colorado Economic Contributions ..................................................................................................................................................... 2 History .................................................................................................................................................................................................. 3 Organizational Chart ........................................................................................................................................................................... 4 Branch Chiefs & Program Leads ........................................................................................................................................................ 5 Office Map ............................................................................................................................................................................................ 6 Colorado State Office ................................................................................................................................................................................ 7 Leadership ......................................................................................................................................................................................... -
Draft Environmental Assessment
U.S. Department of the Interior Bureau of Land Management FINAL ENVIRONMENTAL ASSESSMENT PROJECT NAME: Alpine Triangle Recreation Area Management Plan Environmental Assessment PLANNING UNIT: Alpine Triangle Special Recreation Management Area LEGAL DESCRIPTION: 40N 7W Sections 2-10, 17, 18. 43N 7W Sections 1, 2, 12-14, 24,25, 41N 6W Sections 3-10, 15-21, 29-31. 35, 36. 41N 7W Sections 1-36. 44N 3W Sections 6, 7, 18, 19, 30, 31. 41N 8W Sections 1, 12, 13, 24, 25, 36. 44N 4W Sections 1,2, 10-15, 22-36. 42N 3W Section 6. 44N 5W Sections 25-29, 32-36. 42N 4W Sections 1-8, 17-19. 44N 6W Sections 2, 26, 32- 36. 42N 5W Sections 1-23, 27-30. 44N 7W Sections 35, 36. 42N 6W Sections 1-34. 45N 3W Sections 6, 7, 19, 30, 31. 42N 7W Sections 1-3, 9-36. 45N 4W Sections 1, 2, 11-14, 23-26, 43N 3W Sections 6-7, 18-19, 30-31. 35, 36. 43N 4W Sections 1- 36. 46N 4W Sections 13, 24, 25, 35, 36. 43N 5W Sections 1- 36. 47N 3W Sections 4, 5, 8, 9, 16, 17, 43N 6W Sections 1-36. 19– 21, 28, 29, 31-33. 48N 3W Sections 29- 32. PREPARATION DATE: August 12, 2010 Prepared for: U.S. Department of the Interior Bureau of Land Management Columbine Field Office 367 Pearl Street P.O.Box 439 Bayfield, CO 81122 & Gunnison Field Office 216 North Colorado Gunnison, CO 81230 This page left intentionally blank. Final Environmental Assessment Alpine Triangle Recreation Area Management Plan TABLE OF CONTENTS Page 1.0 INTRODUCTION/PURPOSE AND NEED ........................................................................1 1.1 Introduction ...................................................................................................................1 -
Gunnison RMP/ROD
_I ../ United States Deptirtment of the Interior ____ %KEAI! OF LAND MANAGEMENT Montrose District Office 2465 S0ut.h Townsend Montrose, Colorado 8 140 1 February, 1993 Dear Reader: This document is a copy of the Record of Decision, the approved Resource Management Plan, and the Rangeland Program Summary for the Gunnison Resource Area. This Record of Decision approves the Bureau of Land Management decisions in the Resource Management Plan, Chapter Two of this document, for managing approximately 585,012 acres of BLM-administered surface acres and 726,918 acres of BLM-administered mineral estate in the Gunnison Resource Area. This Resource Management Plan has been approved in the Record of Decision as the land use plan for the Gunnison Resource Area for the next lo-12 years. The decisions in the plan will guide all future uses and activities within the Gunnison Resource Area. The Rangeland Program Summary is included in this document in Chapter Three. The Rangeland Program Summary describes and summarizes the livestock grazing management and related decisions that are contained in the land use plan, the rangeland resource management objectives for the Gunnison Resource Area, and the actions intended to achieve those objectives. This document has been sent to all recipients of the Proposed Resource Management Plan and Final Environmental Impact Statement published in April, 1992. Copies of this document are available by contacting the BLM at the Gunnison Resource Area, 216 North Colorado, Gunnison, Colorado 81230 (303)641-0471, the Montrose District Office, 2465 South Townsend Avenue, Montrose, Colorado 81401 (303)249-7791, or the Colorado State Office, 2850 Youngfield Street, Lakewood, Colorado 80215-7076 (303)239-3670. -
Alpine Loop Explorer
A guide to the natural and historical resources on the Alpine Loop Backcountry Byway ALPINE EXPLORER scenic drives • hiking • history fall colors • wildflowers • wildlife ALPINE LOOP WELCOME TO THE ALPINE LOOP BACKCOUNTRY BYWAY Looking up the Cottonwood Creek valley ~ Photo courtesy of Bureau of Land Management Depending on winter snows, the Alpine Loop Backcountry Byway opens by late May or early June and closes around late October. Most of the Loop winds through public land administered by the Bureau of Land Management and U.S. Forest Service, although many mines and buildings are on private property. Today’s explorers come, summer or winter, in 4-wheel-drive vehicles, ATVs, snowmobiles, mountain bikes, and even 2-wheel-drive cars for a short distance. They explore on foot, horseback, or snowshoes, or ski on the numerous trails. Instead of shovels and gold pans, they carry sketchbooks, cameras, fishing rods, and field guides to help them enjoy the grandeur, scenery, solitude, and wildlife of the remote San Juan backcountry. This gem, the Alpine Loop Backcountry Byway, is your gateway off the beaten track. Uncompahgre Peak (14,309 feet). ~ Photo courtesy of Bureau of Land Management Rising high above the Alpine Loop, the mountains insist that you acknowledge their presence. All around, a kaleidoscope of summer wildflowers gathers along the trails, and the sounds of cascading streams are everywhere. The pure, clear air startles you with its crisp bite, even before your gasp reminds you of the altitude. In front of you the road beckons, leading you higher and higher into an alpine tapestry of greens, browns, whites, and blues. -
Field Trip to Northern San Juan Volcanic Field
,- ' FIELD TRIP TO NORTHERN SAN JUAN VOLCANIC FIELD Days 2-3: Cochetopa Park, La Garita, San Luis, and Lake City calderas P.W. Lipman, for Colorado Scientific Society, Sept. 20-21, 2003 GEOLOGIC SETTING Andesitic to rhyolitic volcanic rocks of the central San Juan volcanic field, along with associated epithermal ores, have been studied intermittently since early in the twentieth century (Emmons and Larsen, 1913; Cross and Larsen, 1935; Larsen and Cross, 1956), culminating with the detailed study of the Creede mining district by Steven and Ratte (1965) and regional field and volcanological studies (Lipman and others, 1970; Steven and others, 1974; Steven and Lipman, 1976). While much had previously been learned about the evolution of several complex caldera clusters from 3 which at least 22 major ash-flow sheets (each 150-5,000 km ) were erupted at 30-26 Ma, recent mapping and other research initiated in support of the Creede Scientific Drilling Project (Bethke and Lipman, 1987; Bethke and Hay, 2000; Lipman, 2000) has provided major new insights for the regional stratigraphic sequence, duration of volcanism, eruptive processes, magmatic evolution, and regional structure in the central part of the volcanic field. In-progress studies,to be reviewed during this trip, are focusing on the enigmatic Cochetopa Park caldera and little-studied volcanic evolution of the northeasternSan Juan Mountains, where central San Juan units overlap older tuff sheets from caldera sources in the Sawatch Range farther to the northeast. Volcanism The San Juan Mountains are the largest erosional remnant of a composite volcanic field (Fig. 1) that covered much of the southern Rocky Mountains in middle Tertiary time (Steven, 1975).