California/Nevada Amphibian Population Task Force 2011 Meeting
Yosemite Lodge at the Falls, Cliff/Falls Room
Yosemite Valley, Yosemite National Park, California

January 6-7, 2011
Field Trip on Jan. 8 to Hetch Hetchy/O'Shaughnessy Dam


(not in agenda order)

1.   Landscape Genetics of Foothill Yellow-legged Frogs (Rana boylii) in Regulated and Unregulated Rivers: Assessing Riverscape Connectivity and Genetic Fragmentation.  Ryan Peek* and Jennifer Dever.  Dept. of Biology, University of San Francisco, San Francisco, CA.  (25 min.)

2.  Evaluating the Impact of a Fungal Pathogen on the Cascades Frog (Rana cascadae) and other Native Amphibians in the Mountains of Northern California.  Jonah Piovia-Scott1*, Karen Pope2, Sharon Lawler3, Janet Foley1, and Esther Cole41Department of Veterinary Medicine and Epidemiology, University of California, Davis, CA;  2Redwood Sciences Laboratory, US Forest Service, Arcata, CA;  3Department of Entomology, University of California, Davis, CA; 4Ecology Graduate Group, University of California, Davis, CA.  (25 min.)

3.  Landscape Epidemiology of Batrachochytrium dendrobatidis in Central California.  Gretchen Padgett-Flohr1* and R.L. Hopkins, II21Dept. of Zoology, Southern Illinois University, Carbondale, IL;   2Insignia Environmental, Palo Alto, CA.  (25 min.)

4.  Status of Remnant Populations of Cascades Frogs (Rana cascadae) in the Southern Cascades of California.  Karen Pope1*, Monty Larson1, and Jonah Piovia-Scott21USDA Forest Service, Pacific Southwest Research Station, Arcata CA;  2Department of Veterinary Medicine and Epidemiology, University of California, Davis, CA.  (25 min.)

5.  Sex-biased Predation on Newts of the Genus Taricha by a Novel Predator and its Relationship with Tetrodotoxin Toxicity.  Amber Stokes1, David Cook2*, Charles Hanifin3, Edmund Brodie III4, and Edmund Brodie, Jr.1  1Department of Biology, Utah State University, Logan, UT; 2Sonoma County Water Agency, Santa Rosa, CA; 3Hopkins Marine Station, Stanford University, Pacific Grove, CA;  4Mountain Lake Biological Station and Department of Biology, University of Virginia, Charlottesville, VA.  (25 min.)

6.  Update on Revised Amphibian And Reptile Species of Special Concern in California and Other CDFG Amphibian-Related Conservation Efforts.  Betsy Bolster, California Department of Fish and Game, Nongame Wildlife Program, Sacramento, CA.  (25 min.)

7.  Frogs, Fish and Forestry: The Need for a Holistic View of Network Processes to Conserve Native Stream Biodiversity in Forest Catchments.  Hartwell Welsh, Jr., USDA Forest Service, Pacific Southwest Research Station, Arcata, CA.  (25 min.)

8.  Evaluating Potential Habitat and Temperature Limiting Factors for Foothill Yellow-Legged Frogs (Rana boylii) in the McCloud River Downstream of McCloud Dam.  Holly Shepley1*, Ryan Peek1, Christine Champe1, and Andie Herman2.   1Stillwater Sciences, Berkeley, CA;  2Pacific Gas and Electric, San Ramon, CA.  (25 min.)

9.  Batrachochytrium dendrobatidis in Arizona: Detection by Water Filtration and the Influence of Water Chemistry on Bd Dynamics.  Oliver Hyman and James Collins.  School of Life Sciences, Arizona State University, Tempe, AZ.  (25 min.)

10.  Changing the Outcome of Amphibian Chytrid Fungus Epizootics Using Field Treatments: Does it Work?  Roland Knapp, Sierra Nevada Aquatic Research Laboratory, University of California, Mammoth Lakes, CA.  (25 min.)

11.  Observations on the Decline of an Isolated Columbia Spotted Frog Population in Northeast Nevada.  Maija Meneks, Salmon-Scott River Ranger District, Klamath National Forest.  (25 min.)

12.  Community Effects of Mountain Yellow-Legged Frog Tadpoles.  Thomas Smith*.  Dept. of Ecology, Evolution, and Marine Biology, University of California Santa Barbara, Santa Barbara, California.  (25 min.)    

13.  An Update on Disease Screening Needs for Amphibian (and Reptile) Studies.  Amy Lind.  US Forest Service, Sierra Nevada Research Center, Davis, CA.  (10 min.)

14.  A Species Distribution Model for Guiding Oregon Spotted Frog (Rana pretiosa) Surveys Near the Southern Extent of Its Geographic Range. (3.4MB pdf) Luke Groff1*, Sharyn Marks2, and Marc P. Hayes31Department of Biological Sciences and the California Cooperative Fish and Wildlife Research Unit, Humboldt State University, Arcata, CA;  2Department of Biological Sciences, Humboldt State University, Arcata, CA;  3Washington Department of Fish and Wildlife, Olympia, WA.  (25 min.)

15.  Are Native Amphibians and Exotic Prey Promoting the Use of Historically Fishless California High-mountain Habitats by River Otters, Lontra canadensisJustin M. Garwood1,3*, Roland A. Knapp2, Karen L. Pope3, Michael Magnuson4, Jeff R. Maurer5, 61Current Address: California Department of Fish and Game, Arcata, CA;  2Sierra Nevada Aquatic Research Laboratory, University of California, Mammoth Lakes, CA;  3Pacific Southwest Research Station, Arcata, USDA Forest Service, Arcata, CA;  4Biological Resources Management Division, Lassen Volcanic National Park, Mineral, CA;  5Resources Management and Science, Yosemite National Park, El Portal, CA;  6Deceased.  (25 min.)

16.  (General topic:  geothermal springs may protect frogs from Bd infection).  Forest, Jaeger, and Shepler.  (25 min.)

17.  The Perils of Unpalatable Periphyton!  Sarah Kupferberg1* and Amy Lind21Dept. of Integrative Biology, University of California, Berkeley, CA;  2US Forest Service, Sierra Nevada Research Center, Davis, CA.  (25 min.)

18.  A Programmatic Safe Harbor Agreement for the Recovery of Two Threatened Amphibians in Alameda County, California.  Jackie Charbonneau1, Terence Huff1, Pete Van Hoorn2, Leslie Koenig2, Kent Reeves2*, Terry Young3, Richard Kuyper4, and Kathy Brown41Natural Resources Conservation Service, Livermore, CA;   2Alamep County Resource Conservation District, Livermore, CA;  3Consulting Scientist, Oakland, CA;  4U.S. Fish and Wildlife Service, Conservation Partnerships Program, Galt, CA.  (25 min.)

19.  Assessment of the Vulnerability of Rana pretiosa to Batrachochytrium dendrobatidis.  Marc Hayes1* and Gretchen Padgett-Flohr21Washington Department of Fish and Wildlife, Olympia, WA;  2Southern Illinois University-Carbondale, Carbondale, IL.  (25 min.)

20.   The Sierra Madre Yellow-legged Frog: A Decade of Monitoring, Conservation, and Restoration.  Adam Backlin1*, Jesse Bennett2, Raul Rodriguez3, Tim Hovey4, Curtis Milliron5, Betsy Bolster6, Leslie Welch7, Kathie Meyer8, Frank Santana9, Andy Snider10, Ian Recchio11, Becca Fenwick12, Ken Kietzer13, Liz Gallegos14, and Robert Fisher151US Geological Survey, Irvine, CA;  2US Fish and Wildlife Service, Carlsbad, CA;  3California Department of Fish and Game, Ontario, CA;  4California Department of Fish and Game, Santa Clarita, CA;  5California Department of Fish and Game, Bishop, CA;  6California Department of Fish and Game, Sacramento, CA;  7US Forest Service, San Fernando, CA;  8US Forest Service, Lytle Creek, CA;  9San Diego Zoo Institute For Conservation Research, Escondido, CA;  10Fresno Chaffee Zoo, Fresno, CA;  11Los Angeles Zoo and Botanical Gardens, Los Angeles, CA;  12James San Jacinto Mountain Reserve, Idyllwild, CA;  13California State Parks, Lake Perris, CA;  14US Geological Survey, Irvine, CA;  15US Geological Survey, San Diego, CA.  (25 min.)

21.  Contaminants and Declines of Cascades Frogs.  Carlos Davidson1, Stanley, Kerri2, and Staci M. Simonich21Environmental Studies Program, San Francisco State University, San Francisco, CA;  2Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis OR.  (25 min.)

22.  Recent Amphibian-Related Conservation Actions in Sequoia and Kings Canyon National Parks.  Danny Boiano1*, Erik Meyer1, Roland Knapp2, Steven Ostoja3, Eric Berlow4, and Matthew Brooks31Sequoia and Kings Canyon National Parks, National Park Service, Three Rivers, CA;  2Sierra Nevada Aquatic Research Laboratory, University of California Santa Barbara, Mammoth Lakes, CA; 3Western Ecological Research Center, Yosemite Field Station, U.S. Geological Survey, El Portal, CA; 4Sierra Nevada Research Institute, Yosemite Field Station, University of California Merced, Wawona Village, CA.  (25 min.)

23.  Pesticides, Air Flow, and Population Declines of Sierra Nevada Alpine Frogs.  David Bradford, Office of Research and Development, U.S. Environmental Protection Agency, Las Vegas, NV.  (25 min.)

24.  Exploring the Evidence of a Historical Chytrid Epidemic in the Yosemite Toad by PCR Analysis of Museum Specimens.  (3MB pdf) Celeste Dodge, Dept. of Biology, San Francisco State University, San Francisco, CA.  (25 min.)

25.  Toward Immunogenetic Studies of Amphibian Chytridiomycosis: Linking Innate and Acquired Immunity.  Jonathan Richmond, US Geological Survey, San Diego Field Station, San Diego, CA.  (25 min.)

26.   Influence of Multiple Pathogens on Amphibians: Individual and Combined Effects of Ribeiroia and Batrachochytrium dendrobatidis on Pacific Treefrogs.  John Romansic1*, Pieter Johnson2, Catherine Searle1, Tate Tunstall3, Barbara Han4, Jason Rohr5, and Andrew Blaustein11Department of Zoology, Oregon State University, Corvallis, OR;  2Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO; 3Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, Santa Barbara, CA; 4Odum School of Ecology, University of Georgia, Athens, GA; 5Department of Integrative Biology, University of South Florida, Tampa, FL.  (20 min.)

27.   Factors Influencing Lotic Breeding Amphibians in the East Bay Regional Park District.  Steven Bobzien¹ * and Sarah Kupferberg².  ¹East Bay Regional Park District, Oakland, CA;  ²Dept. of Integrative Biology, University of California, Berkeley, CA.  (25 min.)

28.  Inter-annual Variability in Observations of California Tiger Salamander Breeding in Central California Stock Ponds.  Jeff Alvarez1* and Mary Shea21The Wildlife Project, Modesto, CA;  2Contra Costa Water District, Concord, CA.  (25 min.)

29.  An Artificial Hibernation Technique to Promote Breeding in a Captive Population of southern California Mountain Yellow-Legged Frog (Rana muscosa).  Frank Santana*, and  Jeff Lemm.  San Diego Zoo Institute for Conservation Research, San Diego, CA.  (25 min.)

30.  Development of Regional Habitat Suitability Criteria for Foothill Yellow-Legged Frog Oviposition and Tadpole Rearing in Northern Sierra Nevada Rivers.  Cheryl Bondi1*, Sarah Yarnell1, and Amy Lind2.   1Watershed Sciences Center, University of California, Davis, CA; 2US Forest Service, Sierra Nevada Research Center, Davis, CA.  (20 min.)


1.  Chytridiomycosis: An Emerging Infectious Disease.  Stephanie Hyland* and Vance Vredenburg.  Department of Biology, San Francisco State University, San Francisco, CA.  



1.  Thermoregulatory Behavior and Growth Characteristics of Western Pond Turtles on the Regulated Mainstem Trinity River and Unregulated  South Fork Trinity River.  James Bettaso1*, Donald Ashton2, and Hartwell Welsh21U. S. Fish and Wildlife Service, Arcata Field Office, Arcata, CA; 2 U. S. Forest Service, Redwood Sciences Laboratory, Arcata, CA.

2.  SAVE THE FROGS! -- Protecting Amphibian Populations in California and Beyond.  Kerry Kriger.  SAVE THE FROGS!, Santa Cruz, CA.

3.  Terbinafine Hydrochloride in Ethanol Effectively Clears  Batrachochytrium dendrobatidis in Amphibians.  Jay Bowerman1, Chris Rombough2, Sarah Weinstock3, and Gretchen Padgett -Flohr41Sunriver Nature Center & Observatory, Sunriver, OR;  2Rombough Biological, Aurora, OR;  33116 Keokuk St., Butte, MT;  4Southern Illinois University, Dept. of Zoology, Carbondale, IL.


* Indicates presenter in multi-authored talks



Thursday, January 6th
8:00 am – 8:30 am: Registration and Refreshments
8:30 am - 5:00 pm: Presentations and Discussion

Friday, January 7th
8:00 am – 8:30 am: Registration and Refreshments
8:30 am - 5:00 pm: Presentations and Discussion

Saturday, January 8th
Field trip to Hetch Hetchy/O'Shaughnessy Damand and discussion of amphibian issues associated with hydroelectric projects. Details.

Hotels and Transportation

Hotel: We have reserved a block of 30 rooms for conference participants at Yosemite Lodge at the Falls, where the meeting is located, for the nights of January 5, 6, and 7 at a rate of $127 per night (double occupancy). Tax is 11%, so the total cost is $140.97 per night. A third adult in the same room costs an additional $10 per night fee. The block of rooms at this rate will be held through December 6, 2010 (or until filled), after which the rooms will be released for general sale and may be booked based on availability.

There are two options for making reservation — on line or by form (reservations will not be accepted by phone). Booking on line is preferred.

To make reservations on line:
Go to:
Select: 'Reservations'
Select: 'Make Reservation'
Enter: Your arrival and departure dates
Enter: Group code: 12W2CU
Select: 'Continue'...
Watch out on this next step as the selected departure date may not populate correctly.
Select: 'Select' and confirm prices
Fill in personal information and credit card information
Select: Book Reservation
Print a copy of the details for your records

To make reservations by faxed form:

Follow the instructions provided by on the DNC Parks & Resorts at Yosemite, Inc. Reservation Request Form. The PDF form is available at

You may also want to consider the associated Travel Guard offer from DNC Parks & Resorts at Yosemite, Inc. Fax your completed form to: Maria Ruiz, Conference Department, Delaware North Parks & Resort, at (559) 456-0542

We have not attempted this process, so if you are the first please let the meeting coordinator know if there are problems.

Alternative lodging:

  1. El Portal, CA: 14 miles (22km) to Yosemite Valley
    1. Cedar Lodge 888.742.4371 / 209.379.2612
    2. Yosemite Blue Butterfly Inn Bed & Breakfast / 209.379.2100
    3. Yosemite View Lodge 888.742.4371 / 209.379.2681
  2. Midpines, CA: 36 miles (58km) to Yosemite Valley
    1. Bear Creek Cabins 888.303.6993 / 209.966.5253
    2. Muir Lodge Motel / 209.966.2468
    3. Ponderosa Guest House 800.624.4858 / 209.966.5772
    4. Yosemite Bug Hostel (HI-USA) 866.826.7108 / 209.966.6666
    5. Yosemite Country Cottage ` / 209.742.7562
    6. Yosemite Trail Camp 877.384.2900 / 209.966.6444

Camping in Yosemite Valley: Sunnyside Campground (Camp 4) is a walk-in, first-come, first-served campground located across the road from Yosemite Lodge. Tent sites are $5/person. Because campground occupancy is generally low this time of year, sites will almost certainly be available, but be advised that you should be prepared for inclement winter weather.

Food and Dining

Coffee, tea, and snacks will be available before the meeting each day and during morning and afternoon breaks. No meals will be provided. Food and dining options include: the Food Court (a cafeteria-style food service), the Mountain Room Restaurant and Mountain Room Lounge at Yosemite Lodge at the Falls, DegnanÕs Cafe and Deli at Yosemite Village, and the Village Store in Yosemite Village, which offers basic grocery supplies. There is also a small convenience store adjacent to the Cliff/Falls Room.


To Yosemite Valley:

From the south via Fresno and Oakhurst, take Hwy. 41 north, entering the park at the South Entrance near Wawona. Continue on the Wawona Road (Hwy 41 extension) to Yosemite Valley. From Fresno: Distance 100 miles (161 km); Time 2 Ð 2.5 hours.

From the west via Merced and Mariposa, take Hwy 140 east, entering the park at El Portal along the Merced River. Continue on the El Portal Road (Hwy 140 extension) to Yosemite Valley.
From Merced: Distance 80 miles (129 km); Time 2 Ð 2.5 hours.

From the north via Sacramento, Manteca, Oakdale, and Groveland, take Hwy 120 east, entering park at the Big Oak Flat Entrance. Continue on the Big Oak Flat Road (Hwy 120 extension) to Yosemite Valley. From Sacramento: Distance 176 miles (283 km); Time 4 Ð 4.5 hours.

From the East: HWY 120 IS CLOSED FOR THE SEASON through Tuolumne Meadows and over Tioga Pass.

Note: Time estimates may vary depending on weather and road conditions.

To Yosemite Lodge:

In Yosemite Valley, take Southside Drive east and follow the signs to Yosemite Lodge at the Falls. Yosemite Lodge at the Falls is located just west of the Yosemite Creek Bridge, across from Camp 4 campground, and near the Yosemite Falls trailhead.

Maps are also available online at:

For a more detailed park map, see:
This map is also available for free at the park entrance.

Weather and Road Condition Considerations: Before leaving home, we advise that you check local weather conditions. Winter conditions, including snow, may occur in Yosemite Valley at the time of the symposium. To inquire about current road conditions, call (209) 372-0209 ext. 1, ext. 1, ext. 1., or visit the following website:

Note: Vehicles must carry chains when entering an activated chain-control area. Chains may be made mandatory on any park road at any time.

Download pdf version of this announcement