Klondike Gold Rush National Historical Park Natural Resource Condition Assessment
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National Park Service U.S. Department of the Interior Natural Resource Program Center Klondike Gold Rush National Historical Park Natural Resource Condition Assessment Natural Resource Report NPS/NRPC/WRD/NRR—2011/288 ON THE COVER. Taiya River Valley Photograph by: Barry Drazkowski, August 2009 Klondike Gold Rush National Historical Park Natural Resource Condition Assessment Natural Resource Report NPS/NRPC/WRD/NRR—2011/288 Barry Drazkowski Andrew Robertson Greta Bernatz GeoSpatial Services Saint Mary’s University of Minnesota 700 Terrace Heights, Box #7 Winona, Minnesota 55987 This report was prepared under Task Agreement J8W07080025 between the National Park Service and Saint Mary’s University of Minnesota, through the Pacific Northwest Cooperative Ecosystem Studies Unit. January 2011 U.S. Department of the Interior National Park Service Natural Resource Program Center Fort Collins, Colorado i The National Park Service, Natural Resource Program Center publishes a range of reports that address natural resource topics 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 Report Series is used to disseminate high-priority, current natural resource management information with managerial application. The series targets a general, diverse audience, and may contain NPS policy considerations or address sensitive issues of management applicability. 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. 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. Printed copies of this report were produced in a limited quantity, and they are only available as long as the supply lasts. This report is also available from the Natural Resource Publications Management Web site (http://www.nature.nps.gov/publications/NRPM). Please cite this publication as: Bernatz, G. C., A. G. Robertson, and B. W. Drazkowski. 2010. Klondike Gold Rush National Historical Park: Natural resource condition assessment. Natural Resource Report NPS/NRPC/WRD/NRR—2010/288. National Park Service, Fort Collins, Colorado. NPS 461/106400, January 2011 ii Contents Page Contents ......................................................................................................................................... iii Figures............................................................................................................................................. v Tables ........................................................................................................................................... viii Plates ............................................................................................................................................... x Photos ............................................................................................................................................. xi Acronyms and Abbreviations ....................................................................................................... xii Acknowledgments........................................................................................................................ xiii Executive Summary ...................................................................................................................... xv Chapter 1 NRCA Background Information .................................................................................... 1 Chapter 2 Introduction and Resource Setting ................................................................................. 5 2.1 Introduction ........................................................................................................................ 5 2.2 Natural Resources .............................................................................................................. 8 2.3 Resource Stewardship ...................................................................................................... 10 Chapter 3 Study Scoping and Design ........................................................................................... 15 3.1 Preliminary Scoping ........................................................................................................ 15 3.2 Study Design .................................................................................................................... 17 Chapter 4 Natural Resource Conditions ....................................................................................... 29 4.1 Landscape Composition ................................................................................................... 30 4.2 Lichens ............................................................................................................................. 39 4.3 Invasives and Exotics ...................................................................................................... 43 4.4 Flora ................................................................................................................................. 53 4.5 Breeding Birds ................................................................................................................. 62 4.6 Coastal Birds .................................................................................................................... 81 iii Contents (continued) Page 4.7 Bears ................................................................................................................................ 97 4.8 Western Toads ............................................................................................................... 103 4.9 Wetlands ........................................................................................................................ 115 4.10 Air Quality ................................................................................................................... 121 4.11 Soundscape .................................................................................................................. 133 4.12 Dark Night Skies .......................................................................................................... 140 4.13 Water Quality - Chemistry........................................................................................... 142 4.14 Water Quality – Trace Inorganic and Organic Chemicals ........................................... 152 4.15 Water Quality – Physical Properties ............................................................................ 168 4.16 Hydrology .................................................................................................................... 179 4.17 Proglacial Lakes ........................................................................................................... 195 4.18 Ice Cover ...................................................................................................................... 201 Chapter 5 Discussion .................................................................................................................. 207 5.1 Park-wide Condition ...................................................................................................... 207 5.2 Indicator Condition Summaries ..................................................................................... 210 5.3 Data Needs ..................................................................................................................... 210 Appendices .................................................................................................................................. 213 iv Figures Page Figure 1. NRCA project area (NPS 2009). ................................................................................................................... 7 Figure 2. Reporting zones used in KLGO NRCA (NPS 2009). .................................................................................. 21 Figure 3. Designation symbols used for individual indicator assessments.. ............................................................... 25 Figure 4. Example of the final condition graphic used in the indicator assessments. ................................................. 26 Figure 5. Skagway Christmas Bird Count circle. ........................................................................................................ 64 Figure 6. On road BBS, off road BBS, and Christmas Bird Count: Number of species per year. .............................. 66 Figure 7. On road BBS and off road BBS: Number of individuals per year. .............................................................. 67 Figure 8. Skagway Christmas Bird Count: Number of individuals per year and average number of birds per survey hour per year. ............................................................................................................................................. 67 Figure 9. On road BBS, off road BBS, and Christmas Bird Count: Simpson diversity index (1/D) per year .............................................................................................................................................................................