Northern Sierra Nevada Foothills Vegetation Project: Vegetation · PDF file February 2011...

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Transcript of Northern Sierra Nevada Foothills Vegetation Project: Vegetation · PDF file February 2011...

  • February 2011

    Northern Sierra Nevada Foothills Vegetation Project: Vegetation Mapping Report

    Prepared by:

    John Menke, Ed Reyes, and Debbie Johnson

    Aerial Information Systems 112 First St.

    Redlands, CA 92373

    Julie Evens and Kendra Sikes, Vegetation Program

    California Native Plant Society 2707 K Street, Suite 1

    Sacramento, CA 95816

    And

    Todd Keeler-Wolf and Rosie Yacoub,

    Vegetation Classification and Mapping Program

    Department of Fish and Game 1807 13th Street, Suite 202

    Sacramento, CA 95811

  • Acknowledgements:

    We are grateful to the following agencies and organizations for financially supporting this effort: California Department of Fish and Game’s Wildlife Conservation Board, Resources Legacy Fund Foundation, and Sierra Nevada Conservancy. We want to thank individuals at AIS who provided GIS services from photo-interpretation to map compilation: John Fulton, Arin Glass, Anne Hepburn, Mike Nelson, Ben Johnson, Janet Reyes, Lisa Morse, and Lisa Cotterman. We also thank the following CNPS staff who provided GIS and field expertise during the map accuracy assessment: Jennifer Buck, Rebecca Crowe, Melinda Elster, Betsy Harbert, Theresa Johnson, and Lisa Stelzner, and in particular Suzanne Harmon and Danielle Roach. We are indebted to the CDFG staff who provided significant input and field checks: Rachelle Boul, Melanie Gogul-Prokurat, Diana Hickson, Anne Klein, Cynthia Roye, Steve Schoenig, and Jerrad Swaney.

  • Table of Contents

    Introduction....................................................................................................................................1 Methods.........................................................................................................................................1

    Figure 1. Study area of the Northern Sierra Nevada Foothills ................................................2 Figure 2. Location of Vegetation Rapid Assessment, Relevé, and Reconnaissance Surveys in the Study Area.....................................................................................................................4 Table 1. Summary of Accuracy Assessment scoring rationale with key to coding choices in AA database............................................................................................................................6

    Results...........................................................................................................................................7

    Figure 3. Resulting vegetation map of the NSNF region at the formation level. .....................8 Figure 4. Distribution of the Accuracy Assessment field surveys in the study area. ...............9 Table 2. Summary of the percent accuracy assessment of the vegetation map units.. ........10 Table 3. Contingency table comparing field-visited versus photo-interpreted map units for accuracy assessment of polygons.........................................................................................11 Table 4: Accuracy Assessment summary table for total number of map units with high, moderate and low sample sizes............................................................................................14 Table 5. Summary of fuzzy logic scores for Users’ and Producers’ Accuracy for those map units at

  • 1211 – Pinus attenuata (Knobcone pine forest) Alliance .................................................... F-8 1212 – Juniperus californica (California juniper woodland) Alliance ................................. F-10 1213 – Callitropsis (Cupressus) macnabiana (McNab cypress woodland) Alliance ......... F-12 1311 – Quercus douglasii (Blue oak woodland) Alliance .................................................. F-16 1312 – Quercus kelloggii (California black oak forest) Alliance ........................................ F-18 1313 – Quercus lobata (Valley oak woodland) Alliance.................................................... F-20 1410 – Quercus chrysolepis (Canyon live oak forest) Alliance ......................................... F-22 2110 – Pseudotsuga menziesii – Calocedrus decurrens (Douglas-fir – Incense cedar forest)

    Alliance.........................................................................................................................F-24 2111– Acer macrophyllum (Bigleaf maple forest) Alliance................................................ F-25 2200 – Plantation – (California Montane Conifer Forests Group) ..................................... F-26 2212 – Pinus ponderosa – Calocedrus decurrens (Mixed conifer forest) Alliance............ F-28 2213 – Calocedrus decurrens (Incense-cedar forest) Alliance ......................................... F-29 3110 – Populus fremontii (Fremont cottonwood forest) Alliance....................................... F-30 3111 – Salix laevigata (Red willow thickets) Alliance........................................................ F-32 3112 – Salix gooddingii (Black willow thickets) Alliance ................................................... F-33 3113 – Juglans hindsii (California walnut groves) Alliance ............................................... F-33 3210 – Alnus rhombifolia (White alder groves) Alliance.................................................... F-34 3211 – Fraxinus latifolia (Oregon ash groves) Alliance..................................................... F-35 3310 – Platanus racemosa (California sycamore woodlands) Alliance ............................ F-36

    Shrub-Overstory Vegetation 4111 – Adenostoma fasciculatum (Chamise chaparral) Alliance...................................... F-38 4112 – Arctostaphylos viscida (White leaf manzanita chaparral) Alliance ........................ F-40 4113 – Ceanothus cuneatus (Wedge leaf ceanothus Chaparral) Alliance........................ F-42 4114 – Eriodictyon californicum (California yerba santa scrub) Alliance .......................... F-44 4115 – Arctostaphylos manzanita (Common manzanita chaparral) Alliance.................... F-46 4117 – Arctostaphylos myrtifolia (Ione manzanita chaparral) Alliance.............................. F-46 4200 – California Mesic Chaparral Alliance ...................................................................... F-46 4210 – Quercus berberidifolia (Scrub oak chaparral) Alliance.......................................... F-46 4211 – Cercocarpus montanus (Birch leaf mountain mahogany chaparral) Alliance ....... F-46 4212 – Heteromeles arbutifolia (Toyon chaparral) Alliance .............................................. F-48 4310 – Quercus durata (Leather oak chaparral) Alliance ................................................. F-50 4410 – Quercus wislizeni Shrub........................................................................................ F-50 4420 – Baccharis pilularis (Coyote brush scrub) Alliance ................................................. F-50 4501 – Frangula californica (including F. c. ssp. tomentella) (California coffee berry scrub)

    Alliance.........................................................................................................................F-50 4610 – Cytisus spp., Genista spp., and others (Broom) Shrubland Stand........................ F-50 6110 – Ceanothus integerrimus (Deer brush chaparral) Alliance ..................................... F-52 6111 – Quercus garryana/ var. breweri (Brewer oak scrub) Alliance................................ F-54 6210 – Baccharis salicifolia Alliance ................................................................................. F-55 6211 – Salix exigua (Sandbar willow thickets) Alliance .................................................... F-56 6212 – Tamarix spp. (Tamarisk) Semi-Natural Stands ..................................................... F-57 6213 – Rubus armeniacus or Rubus discolor (Himalayan black berry brambles) Semi-

    Natural Stands ............................................................................................................ F-58 6214 – Cephalanthus occidentalis (Button willow thickets)............................................... F-59 6217 – Salix lasiolepis (Arroyo willow thickets) Alliance ................................................... F-59 6301 – Toxicodendron diversilobum (Poison oak scrub) Alliance..................................... F-60

  • Herbaceous Vegetation

    7100 – California Annual and Perennial Grasslands Macrogroup .................................... F-62 7101 – Mediterranean California Naturalized Annual and Perennial Grassland Group.... F-62 7102 – Vancouverian and Rocky Mountain Naturalized Perennial Grassland Group....... F-63 7200 – Californian Warm Temperate Marsh/Seep Group................................................. F-63 7300 – Arid West Freshwater Emergent Marsh Group ..................................................... F-63 7400 – Vernal Pool & Californian Annual and Perennial Grassland Matrix Mapping Unit F-64 7600 – Western N. American Vernal Pool and Other Seasonally Flooded Macrogroup... F-64 9200 – Agriculture............................................................................................................. F-65 9300 – Built Up & Urban Disturbance ............................................................................... F-65 9310 – Urban Window....................................................................................................... F-65 9401 – Cliffs & Rock Outcroppings ...............................................