Mapping Wilderness Character in Sequoia and Kings Canyon National Parks
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National Park Service U.S. Department of the Interior Natural Resource Stewardship and Science Mapping Wilderness Character in Sequoia and Kings Canyon National Parks Natural Resource Technical Report NPS/SEKI/NRTR—2014/872 ON THE COVER Backpacker hikes through foxtail pine stand at Little Claire Lake, Sequoia National Park. Photograph by: Linda Mutch Mapping Wilderness Character in Sequoia and Kings Canyon National Parks Natural Resource Technical Report NPS/SEKI/NRTR—2014/872 James Tricker1, Peter Landres1*, Gregg Fauth2, Paul Hardwick2, and Alex Eddy2 1U.S. Forest Service Aldo Leopold Wilderness Research Institute 790 East Beckwith Avenue Missoula, MT 59801 2National Park Service Sequoia and Kings Canyon National Parks 46050 Generals Highway Three Rivers, CA 93271 *Primary corresponding author May 2014 U.S. Department of the Interior National Park Service Natural Resource Stewardship and Science Fort Collins, Colorado The National Park Service, Natural Resource Stewardship and Science office in Fort Collins, Colorado, publishes a range of reports that address natural resource topics. These reports are of interest and applicability to a broad audience in the National Park Service and others in natural resource management, including scientists, conservation and environmental constituencies, and the public. The Natural Resource Technical Report Series is used to disseminate results of scientific studies in the physical, biological, and social sciences for both the advancement of science and the achievement of the National Park Service mission. The series provides contributors with a forum for displaying comprehensive data that are often deleted from journals because of page limitations. All manuscripts in the series receive the appropriate level of peer review to ensure that the information is scientifically credible, technically accurate, appropriately written for the intended audience, and designed and published in a professional manner. This report received formal peer review by subject-matter experts who were not directly involved in the collection, analysis, or reporting of the data, and whose background and expertise put them on par technically and scientifically with the authors of the information. Views, statements, findings, conclusions, recommendations, and data in this report do not necessarily reflect views and policies of the National Park Service, U.S. Department of the Interior. Mention of trade names or commercial products does not constitute endorsement or recommendation for use by the U.S. Government. This report is available in digital format from the Natural Resource Publications Management website (http://www.nature.nps.gov/publications/nrpm/). To receive this report in a format optimized for screen readers, please email [email protected]. Please cite this publication as: Tricker, J., P. Landres, G. Fauth, P. Hardwick, and A. Eddy. 2014. Mapping wilderness character in Sequoia and Kings Canyon National Parks. Natural Resource Technical Report NPS/SEKI/NRTR— 2014/872. National Park Service, Fort Collins, Colorado. NPS 102/124604, May 2014 ii Contents Page Figures.................................................................................................................................................... v Tables .................................................................................................................................................... vi List and Roles of Contributors ............................................................................................................. vii Executive Summary .............................................................................................................................. ix Acronyms and Abbreviations................................................................................................................ xi Introduction ............................................................................................................................................ 1 Overview of Wilderness Character Map Development Process ............................................................ 7 Methods ................................................................................................................................................ 11 Natural Quality ............................................................................................................................. 13 Indicators and Measures .......................................................................................................... 13 Data sources, processing and cautions .................................................................................... 17 Weighting ................................................................................................................................ 24 Untrammeled Quality ................................................................................................................... 28 Data sources, processing and cautions .................................................................................... 29 Weighting ................................................................................................................................ 32 Maps ........................................................................................................................................ 33 Undeveloped Quality .................................................................................................................... 36 Indicators and measures .......................................................................................................... 36 Data sources, processing and cautions .................................................................................... 38 Weighting ................................................................................................................................ 42 Maps ........................................................................................................................................ 43 Solitude or Primitive and Unconfined Recreation Quality ........................................................... 46 Indicators and measures .......................................................................................................... 46 Travel time and viewshed modeling ........................................................................................ 48 Data sources, processing and cautions .................................................................................... 56 iii Weighting ................................................................................................................................ 64 Maps ........................................................................................................................................ 64 The Wilderness Character Map ........................................................................................................... 69 Improvements ............................................................................................................................... 72 Final Concerns about Mapping Wilderness Character ................................................................. 73 Literature Cited .................................................................................................................................... 74 Appendix 1. Travel impedance for land cover classes ......................................................................... 79 iv Figures Page Figure 1. Sequoia and Kings Canyon National Parks. .......................................................................... 2 Figure 2. Wilderness areas in the Sierra Nevada. ................................................................................. 3 Figure 3. Flow chart for developing the wilderness character map. ..................................................... 8 Figure 4. Indicator maps for (A) plant and animal species and communities, (B) physical resources, and (C) biophysical processes.. ........................................................................................... 26 Figure 5. Natural quality of wilderness character.. ............................................................................. 27 Figure 6. Indicator maps for (A) authorized actions and (B) unauthorized actions. ........................... 34 Figure 7. Untrammeled quality of wilderness character.. ................................................................... 35 Figure 8. Indicator maps for (A) non-recreational structures, installations, and developments; (B) inholdings; and (C) use of motor vehicles, motorized equipment, or mechanical transport ............................................................................................................................ 44 Figure 9. Undeveloped quality of wilderness character. ..................................................................... 45 Figure 10. Travel time model. This map depicts the fastest route it would take a person to walk to every pixel in SEKI from the source grid (trailheads). ........................................................... 51 Figure 11. Viewshed impacts for (A) features inside the wilderness and (B) features outside the wilderness. ......................................................................................................................... 56 Figure 12. Soundscape map for Sequoia and Kings Canyon National Parks. .................................... 61 Figure 13. Indicator