Mammal inventory of the mojave network parks
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Mammal Inventory of the Mojave Network Parks. Charles Drost and Jan Hart USGS Southwest Biological Science Center Colorado Plateau Research Station. Mojave Network Parks. Objectives For each area, determine or provide data on:. mammal species composition distribution and abundance

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Mammal inventory of the mojave network parks
Mammal Inventory of the Mojave Network Parks

Charles Drost and Jan Hart

USGS Southwest Biological Science Center

Colorado Plateau Research Station



Objectives for each area determine or provide data on
ObjectivesFor each area, determine or provide data on:

  • mammal species composition

  • distribution and abundance

  • biological & natural history information

  • spatial data on sampling

  • museum voucher specimens, as appropriate




Mammal inventory of the mojave network parks

  • Death Valley National Park

    • Greenwater Range and Greenwater Valley

    • Owlshead Mountains

    • Inyo Range

    • Ibex Hills

    • Argus Range / Darwin Plateau

    • Springs (Cottonwood and Panamint Mountains)

  • Joshua Tree National Park

    • Little San Bernardino Mountains

    • Pinto Wash/Pinto Dunes

    • Coxcomb / Eagle Mountains

    • Quail Springs Watershed

    • Fan Palm Oases

    • Lost Horse and Hidden Valleys


Mammal inventory of the mojave network parks

  • Lake Mead National Recreation Area

    • Shivwits Plateau

    • Newberry Mountains

    • Black Mountains

    • Gold Butte

    • Springs

    • Sandy benches near water

  • Manzanar National Historic Site

    • Riparian Community

    • Cottonwood Grove

    • Blackbrush Scrub

  • Mojave National Preserve

    • Springs and Seeps

    • Piute Range

    • Limestone Substrates and Sand Dunes

    • High elevation areas


Methods literature and museum specimens
Methods:Literature and Museum Specimens

  • Published Accounts

  • Museum specimens

  • NPS Record cards

  • Other Local Data and Resources




Field methods
Field Methods

  • Live Traps

    • Sherman (rodents)

    • Tomahawk (medium-sized mammals)

  • Visual Surveys

  • Automatic Cameras

  • Methods for Bats

    • Mist Netting

    • Ultrasonic Surveys






Mammal sampling effort
Mammal Sampling Effort

  • # of Visits Person-days Trap-nights

  • DEVA 10 112 2,397

  • JOTR 10 92 1,492

  • LAME 5 71 1,313

  • MANZ 6 28 604

  • MOJA 10 93 1,538

  • Total: 41 396 7,344


Rainfall pattern
Rainfall Pattern

Death Valley

Joshua Tree


Total mammal species at each park
Total Mammal Species at Each Park

Documented Probable

Death Valley 59 1

Joshua Tree 50 4

Lake Mead 59 8

Manzanar 19 11

Mojave 50 3



General species abundance
General Species Abundance

  • Cumulative Captures, All Parks:

  • Cactus Mouse 229

  • Merriam’s Kangaroo Rat 170

  • Canyon Mouse 166

  • Desert Woodrat 159

  • Deer Mouse 130

  • Desert Pocket Mouse 74

  • Pallid Bat 55

  • Western Pipistrelle 35


Some other results new species
Some Other Results: “New Species”




Final report and data
Final Report and Data

  • Draft Reviewed by Parks

  • Suggest Adding Annotated Species Section

    • Taxonomic Changes

    • Documentation

    • Distribution and Abundance

    • Known Population Trends

    • Other Notes


Monitoring considerations
Monitoring Considerations

  • Small Mammals as Monitoring Subjects

  • Response to Expected Change

  • Possible Focus on Edge-of-Range Species

  • Potential “Repeat Inventory” Approach

  • Monitoring Habitat vs. Monitoring Organisms within Habitat


Acknowledgments
Acknowledgments

  • Special thanks to NPS staff, including Linda Greene, Linda Manning, and Dana York (Death Valley National Park), Hank McCutchen, Harold De Lisle, Amy Fesnock, and Jane Rodgers (Joshua Tree National Park), Kent Turner, Ross Haley, and Libby Powell (Lake Mead National Recreation Area), Frank Hays (Manzanar National Historic Site), and Larry Whalon, Debra Hughson, and Kitty Jensen (Mojave National Preserve). Darla Sidles (Parashant National Monument) assisted with access to the Shivwits Plateau area of Lake Mead NRA and the adjacent Parashant NM. Jim Andre (University of California Granite Mountains Reserve) aided us in our sampling of the Granite Mountains area of Mojave NP.