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Dede Olson

Dede Olson

Supervisory Research Ecologist, Team Leader
Pacific Northwest Research Station
Corvallis Forestry Sciences Lab

Contact via email
Phone: (541) 750-7373
Fax: (541) 750-7329

Curriculum Vitae (138 KB)

Statement of Research:


I study the conservation biology, behavioral ecology, and population and community ecology of amphibians. My current projects address: 1) the effects of forest management practices and riparian buffer widths; 2) microhabitat- to landscape-scale habitat modeling; 3) the effects of climate variation; and 4) the amphibian chytrid fungus, Batrachochytrium dendrobatidis.

Projects & Activities:


Density Management and Riparian Buffer Study

Density Management and Riparian Buffer Study
Investigation of aquatic-dependent vertebrates within
and along headwater streams in managed forests of
western Oregon.
Read more

Recent publications:

Olson and Kluber 2014 - Herp. Cons. Biol. - plethodontid distributions
Olson, Leirness et al. 2014 - effects on vertebrates
Olson and Burton 2014 - Forests - stream vertebrates & habitats
Burton et al. 2014 - Ecosphere - understory vegetation
Burton et al. 2013 - Ecological Applications - carbon storage
Burton et al. 2013 - GTR 880 - carbon storage
Ruzicka et al. 2014 - Forest Science - upslope thinning effects
Ruzicka et al. 2013 - GTR 880 - DMS and the NW Forest Plan
Olson and Burnett 2013 - GTR 880 - landscape connectivity
Olson 2013 - GTR 880 - effects on amphibians

See Selected Publications for more

June 2014 World Bd Distribution map, low resolution

Global Bd Mapping Project
The amphibian chytrid fungus, Batrachochytrium
dendrobatidis
(Bd), is an OIE-notifiable* emerging infectious
disease linked to amphibian losses in many locations worldwide.
We continue to compile and map global sampling efforts for Bd in
cooperation with researchers around the world.
(*OIE = World Organisation for Animal Health)
This work has now been published in PLOS ONE:
Publication pdf
Supporting information figures pdf
Supporting information tables pdf (including species detected table)

Updated! Downloadable map for presentations available here. (large file, may be slow)
Updated! 5th-field watershed occurrence map for lower 48 United States, June 2014 available here.
Updated! 6th-field watershed occurrence map for lower 48 United States, June 2014 available here.
Template spreadsheet for data upload to Bd-Maps available here,
with data-field definitions for data formatting.

Adult Cope's Giant Salamander (Dicamptodon copei) showing typical markings

Adult Cope's Giant Salamander (Dicamptodon copei).
Photo by L.L.C. Jones

Conservation Assessments for Pacific Northwest US Species
Species of concern listed as US Forest Service Region 6 ‘Sensitive Species’ and
Bureau of Land Management Oregon/Washington ‘Special Status’ are managed under the
Interagency Special Status and Sensitive Species Program (ISSSSP). Species-specific “Conservation Assessments” are developed to provide a synthesis of current biological and ecological knowledge, as well as known or suspected threats and effects of management
activities. New information is often available per species, such as the compilation and map of species localities in the northwest area. Assessments provide guidance about management considerations and outline research and monitoring needs; their intent is to help manage for species to forestall losses and preclude listing under the US Endangered Species Act.
For some species, the ISSSSP has funded projects to understand species distributions,
habitat associations, or effects of management.
Reports of these studies and Conservation Assessments are available on the
ISSSSP Web site, in the amphibian index:
http://www.fs.fed.us/r6/sfpnw/issssp/species-index/fauna-amphibians.shtml

 

I have contributed to the Conservation Assessments of the following amphibian species:
Aneides flavipunctatus- Black Salamander (ANFL)
Batrachoseps attenuatus - California Slender Salamander (BAAT)
Batrachoseps wrighti - Oregon Slender Salamander (BAWR)
Dicamptodon copei - Cope's Giant Salamander (DICO)
Plethodon larselli - Larch Mountain Salamander (PLLA)
Plethodon stormi - Siskiyou Mountains Salamander (PLST) [note: this species also has a tri-agency ‘Conservation Strategy’ with US FWS, published as Northwest Fauna 6]
Plethodon vandykei - Van Dyke's Salamander (PLVA)
Ascaphus montanus - Rocky Mountain Tailed Frog (ASMO)
Rana boylii - Foothill Yellow-legged Frog (RABO)

In addition, Conservation Assessments have been developed by others for these species, and are available at the ISSSSP link above:
Rana luteiventris - Columbia Spotted Frog (RALU)
Rana pretiosa - Oregon Spotted Frog (RAPR)
Rhyacotriton olympicus - Olympic Torrent Salamander (RHOL)
Rhyacotriton cascadae - Cascade Torrent Salamander (RHCA)

Climate Change and Herpetofauna
Amphibians and reptiles are particularly sensitive to
temperature and moisture conditions. Our international
working group looks at what might be done at local scales
to accommodate effects of climate variation. A library
of practical actions is being assembled.
Read more
RRTH = Relocation, Reintroduction,
Translocation, and Headstarting

These are stop-gap measures for rare species conservation.
To promote communication of lessons learned from past and
ongoing projects, photos and information on existing projects
is being compiled.
Read more
Ranavirus Reporting System
Ranavirus is an OIE-notifiable emerging infectious disease associated with amphibian losses; it also affects fish and
reptiles. Ranavirus is relatively poorly understood, and there is a need to enhance communications among researchers
and managers. In cooperation with world Ranavirus experts, we are helping to create a Ranavirus Reporting System.

Thanks to Amanda Duffus, Gordon College, Georgia, for taking the lead on coordinating world efforts to develop a
global ranavirus database to initiated this reporting system. Thanks also to Matt Gray, University of Tennessee, who has
taken a lead role in organizing the world science community to advance our Ranavirus knowledge and identify key research
needs.
With several partners, in 2011, we co-sponsored an international symposium on Ranavirus: 2011 Ranavirus Symposium.
This session resulted in the formation of a Global Ranavirus Consortium
The Symposium is summarized in these publications:
Lesbarreres et al. 2011
Robert and Chinchar 2011
Kerby 2011
Ranavirus General Information: "The Rise of Ranavirus", Gray and Miller 2013
2011 Year of the Turtle logo

2011 PARC Year of the Turtle
US Forest Service PNW Contributions

2011 State of the Turtle (Olson and Kiester 2010)
highlights the current threats to turtles and tortoises,
and the need for conservation, research, and education.
Visit PARC – Year of the Turtle for more information, and
to view issues of Year of the Turtle News.

2011 Year of the Lizard Logo

2012 PARC Year of the Lizard
US Forest Service PNW Contributions:

State of the Lizard (Olson 2012)
highlights the current threats to lizards, and
the need for conservation, research, and education.
Visit PARC – Year of the Lizard for more information.
A bimonthly newsletter (Year of the Lizard News) and
monthly photo contest calendar are available for free
download.

2013 PARC Year of the Snake logo

2013 PARC Year of the Snake
US Forest Service PNW Contributions


Visit PARC – Year of the Snake for free
downloadable monthly Photo Contest calendars
and monthly issues of Year of the Snake News.

Year of the Salamander logo

2014 PARC Year of the Salamander
In 2014, Partners in Amphibian and Reptile Conservation
and their collaborating partners are focusing on salamanders,
their diversity, habitats, and conservation.
Visit PARC - Year of the Salamander for more information.
The monthly newsletter, Salamander News, and Photo Contest
Calendar are available for free download at:
www.yearofthesalamander.org

 

Selected Publications:


2014

Barela, K.L., and D.H. Olson. 2014. Mapping the Western Pond Turtle (Actinemys marmorata) and Painted Turtle (Chrysemys picta) in western North America. Northwestern Naturalist 95(1): 1-12.

Chestnut, T., C. Anderson, R. Popa, A.R. Blaustein, M. Voytek, D.H. Olson, and J. Kirshein. 2014. Heterogeneous occupancy and density estimates of the pathogenic fungus Batrachochytrium dendrobatidis in waters of North America. PLOS One 9(9): e106790. doi:10.1371/journal.pone.0106790

Foster, A.D., D.H. Olson, L.L.C. Jones. 2014. A review of the biology and conservation of the Cope's Giant Salamander, Dicamptodon copei Nussbaum, 1970 (Amphibia: Caudata: Dicamptodontidae) in the Pacific Northwestern region of the USA. Life: the Excitement of Biology 2(4): 210-246. DOI: 10.9784/LEB2(4)Foster.01

Foster, A.D. and D.H. Olson. 2014. Conservation assessment for the Cope’s Giant Salamander (Dicamptodon copei), Version 1.0. USDA Forest Service, Region 6, and Oregon BLM, Special Status Species Program. http://www.fs.fed.us/r6/sfpnw/issssp/species-index/fauna-amphibians.shtml

Olson, D.H. 2014. Scott Bar Salamander, Plethodon asupak. In: Green, D.M., L. Weir, G.S. Casper, and M. Lannoo. North American Amphibians: Distribution and Diversity. Los Angeles, CA: University of California Press

Olson, D.H. and J.I. Burton. 2014. Near-term effects of repeated thinning with riparian buffers on headwater stream vertebrates and habitats in Oregon, USA. Forests 5: 2703-2729. doi:10.3390/f5112703

Olson, D.H., and T. Chestnut. 2014. Trouble in the aquatic world - how wildlife professionals are battling amphibian declines. The Wildlife Professional 8(4): 28-31(Winter 2014).

Olson, D.H., and M.R. Kluber. 2014. Plethodontid salamander distributions in managed forest headwaters in western Oregon. Herpetological Conservation and Biology 9(1): 76-96.

Olson, D.H., J.B. Leirness, P.G. Cunningham, and E.A. Steel. 2014. Riparian buffers and forest thinning: Effects on headwater vertebrates 10 years after thinning. Forest Ecology and Management 321: 81-93.

Olson, D.H., and K.L. Ronnenberg. 2014. Global Bd mapping project: 2014 update. FrogLog 111: 17-21.

Reshetnikov, A.N., T. Chestnut, J.L. Brunner, K. Charles, E.E. Nebergall, and D.H. Olson. 2014. Detection of the emerging amphibian pathogens Batrachochytrium dendrobatidis and ranavirus in Russia. Diseases of Aquatic Organisms 110: 235-240. doi: 10.3354/dao02757

Ruzicka, K.J., Jr., K.J. Puettmann, and D.H. Olson. 2014. Management of riparian buffers: upslope thinning with downslope impacts. Forest Science 60(5): 881-892. http://dx.doi.org/10.5849/forsci.13-107

2013

Burton, J.I., A. Ares, D.H. Olson, and K.J. Puettmann. 2013. Management trade-off between aboveground carbon storage and understory plant species richness in temperate forests. Ecological Applications 23(6): 1297-1310.

Burton, J.I., A. Ares, S.E. Mulford, D.H. Olson and K.J. Puettmann. 2013. Above-ground carbon storage, downed wood, and understory plant species richness after thinning in western Oregon. In: Anderson, P.D. and K.L. Ronnenberg, eds. Density management in the 21st century: west side story. General Technical Report PNW-GTR-880. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: 91-100. Link to the full GTR at http://www.fs.fed.us/pnw/pubs/pnw_gtr880.pdf

Gervasi, S.S., C. Gondhalekar, D.H. Olson, and A.R. Blaustein. 2013. Host identity matters in the amphibian-Batrachochytrium dendrobatidis system: fine-scale patterns of variation in responses to a multi-host pathogen. PLOS ONE PLoS ONE 8(1): e54490. doi:10.1371/journal.pone.0054490

Graeter, G.J., K.A. Buhlmann, L.R. Wilkinson, and J. W. Gibbons (eds.). 2013. Inventory and Monitoring: Recommended Techniques for Reptiles and Amphibians, with Application to the United States and Canada. PARC Technical Report. Aiken, South Carolina. [My contribution was to coordinate the Northwest section of Table 5-1: Species x Techniques Table and Table 14-1: Photo Vouchering Table.]

Olson, D.H. 2013. Riparian buffers and thinning in headwater drainages in western Oregon: Effects on amphibians. 2013. In: Anderson, P.D. and K.L. Ronnenberg, eds. Density management in the 21st century: west side story. General Technical Report PNW-GTR-880. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: 148-162. Link to the full GTR at http://www.fs.fed.us/pnw/pubs/pnw_gtr880.pdf

Olson, D.H., D.M. Aanensen, K.L. Ronnenberg, C.I. Powell, S.F. Walker, J. Bielby, T.W.J. Garner, G. Weaver, the Bd Mapping Group, and M.C. Fisher. 2013. Mapping the global emergence of Batrachochytrium dendrobatidis, the amphibian chytrid fungus. PLOS ONE 8(2): e56802. doi:10.1371/journal.pone.0056802
Supplemental information text and tables, including infected species table
Supplemental information figures

Olson, D.H. and K.M. Burnett. 2013. Geometry of forest landscape connectivity: Pathways for persistence. In: Anderson, P.D. and K.L. Ronnenberg, eds. Density management in the 21st century: west side story. General Technical Report PNW-GTR-880. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: 220-238. Link to the full GTR at http://www.fs.fed.us/pnw/pubs/pnw_gtr880.pdf

Olson, D.H., and D. Saenz. 2013. Climate Change and Amphibians. 2013. U.S. Department of Agriculture, Forest Service, Climate Change Resource Center. http://www.fs.fed.us/ccrc/topics/wildlife/amphibians/

Olson, D.H., and D. Saenz. 2013. Climate Change and Reptiles. 2013. U.S. Department of Agriculture, Forest Service, Climate Change Resource Center. http://www.fs.fed.us/ccrc/topics/wildlife/reptiles/

Ruzicka, K.J. Jr., D.H. Olson, K.J. Puettmann. 2013. The intertwining paths of the Density Management and Riparian Buffer Study and the Northwest Forest Plan. In: Anderson, P.D. and K.L. Ronnenberg, eds. Density management in the 21st century: west side story. General Technical Report PNW-GTR-880. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: 10-21. Link to the full GTR at http://www.fs.fed.us/pnw/pubs/pnw_gtr880.pdf

2012

Barela, K.L. and D.H. Olson. 2012. Distribution of the Western Pond Turtle. In: Bury, R.B., H.H. Welsh, Jr. D.J. Germano, and D. Ashton, eds. Western Pond Turtle: Sampling techniques, inventory and monitoring, conservation and management. Northwest Fauna 7: 4-5.

Olson, D.H. 2012. State of the Lizard. Partners in Amphibian and Reptile Conservation. Also available in Spanish at: www.yearofthelizard.org.

Olson, D.H., K.L. Ronnenberg, D. Aanensen, and M. Fisher. 2012. Batrachochytrium dendrobatidis global locality map. In: Wessner, D., C. Dupont, and T. Charles. Microbiology. John Wiley & Sons.

2011

Bancroft, B., B. Han, C. Searle, L. Michael, D. H. Olson, J. Lawler, and A. R. Blaustein. 2011. Species-level correlates of susceptibility to the pathogenic amphibian fungus Batrachochytrium dendrobatidis in the United States. Biodiversity Conservation 20:1911-1920.

Duffus, A. and D. Olson. 2011. The establishment of a global Ranavirus reporting system. Froglog 96: 37.

Graeter, G.J., K.A. Buhlmann, L.R. Wilkinson, and J. W. Gibbons (eds.). 2011 in press. Inventory and Monitoring: Recommended Techniques for Reptiles and Amphibians, with Application to the United States and Canada. PARC Technical Report. Aiken, South Carolina. [My contribution was to complete the Northwest section of Table 5-1: Species x Techniques Table and Table 14-1: Photo Vouchering Table.]

Kiester, A.R. and D.H. Olson. 2011. Prime time for turtles. Herpetological Review 42(2): 198-204.

Olson, D.H. 2011. Rocky Mountain tailed frog, Ascaphus montanus, Conservation Assessment. USDA Forest Service, Region 6, and Oregon BLM, Special Status Species Program.

Olson, D.H. 2011. Bridging Science and Management: Climate Change. Brochure, Partners in Amphibian and Reptile Conservation.

Olson, D.H. and A. R. Kiester. 2011. State of the Turtle. Partners in Amphibian and Reptile Conservation. Also available in French and Spanish: www.yearoftheturtle.org.

Paoletti, D. J. D.H. Olson, and A.R. Blaustein. 2011. Responses of foothill yellow-legged frog (Rana boylii) larvae to an introduced predator. Copeia: 161-168.

Riley, T.Z., P. Nanjappa, D.H. Olson, A.R. Breisch. 2011. Annual Report: 2010. Partners in Amphibian and Reptile Conservation (PARC). Annual Report No. 1, Hagerstown, MD. 16 pp. Also available at: www.parcplace.org.

Searle, C.L., S.S. Gervasi, J. Hua, J.I. Hammond, R.A. Relyea, D.H. Olson, and A.R. Blaustein. 2011. Differential host susceptibility to Batrachochytrium dendrobatidis, an emerging amphibian pathogen. Conservation Biology 25(5): 965-974.

Shoo, L. P. et al. 2011. Engineering a future for amphibians under climate change. J. Applied Ecol: 48: 487-492.

Shoo, L.P., D.H. Olson, and J-M. Hero. 2011. A call to amphibian biologists to share innovative ideas to minimize loss of species under climate change. Froglog 96: 32-33.

2010

Oliver, Marie with K. Burnett and D. Olson. 2010. Linked in: connecting riparian areas to support forest biodiversity. Science Findings 120. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 5 p.

2009

Kluber, M.R., D.H. Olson, and K.J. Puettmann. 2009. Thermal profiles of downed wood under different forest management regimes in the Oregon Coast Range and their potential impact on plethodontid salamander habitat. Northwest Science 83:25-34.

Olson, D.H. (coord. Ed.). 2009. Herpetological conservation in northwestern North America. Northwestern Naturalist 90: 61-96.

Olson, D.H. and K.M. Burnett. 2009. Design and management of linkage areas across headwater drainages to conserve biodiversity in forest ecosystems. Forest Ecology and Management 259S:S117-S126.

Olson, D.H., D.R. Clayton, E.C. Reilly, R.S. Nauman, B. Devlin, and H.H. Welsh, Jr. 2009. Conservation of the Siskiyou Mountains Salamander (Plethodon stormi). Northwest Fauna 6:1-73.

Olson, D.H. and R. Davis. 2009. Conservation assessment for the Foothill Yellow-legged Frog (Rana boylii). USDA Forest Service, Region 6, and Oregon BLM, Special Status Species Program.

Olson, D.H., E. Garcia, P. Nanjappa Mitchell (Coord. Eds.). 2009. 10 years of PARC. Partners in Amphibian and Reptile Conservation, National Brochure No. 5. USDI BLM, Denver, CO, 20 p.

2008

Clayton, D.R. and D.H. Olson. 2008. Conservation assessment for the Oregon Slender Salamander (Batrachoseps wrighti). Version 1.0. USDA Forest Service, Region 6, and Oregon BLM, Special Status Species Program.

Crisafulli, C.M., D.H. Olson, and D.R. Clayton. 2008. Conservation assessment for the Larch Mountain Salamander (Plethodon larselli), Version 1.3. USDA Forest Service, Region 6, and Oregon BLM, Special Status Species Program.

Kluber, M.R., D.H. Olson, and K.J. Puettmann. 2008. Amphibian distributions in riparian and upslope areas and their habitat associations on managed forest landscapes of the Oregon Coast Range. Forest Ecology and Management 256:529-535.

Nauman, R.S. and D.H. Olson. 2008. Distribution and conservation of rare Plethodon salamanders on federal lands in Siskiyou County, California. Northwestern Naturalist 89:1-9.

Olson, D.H. 2008. Moist coniferous forest. Pp 47-49 In: Pilliod, D. and E. Wind (eds.). Habitat management guidelines for amphibians and reptiles of the Northwestern United States and Western Canada. Partners in Amphibian and Reptile Conservation, Technical Publication HMG-4, Birmingham AL.

Olson, D.H. 2008. Riparian areas. Pp 82-86 In: Pilliod, D. and E. Wind (eds.). Habitat management guidelines for amphibians and reptiles of the Northwestern United States and Western Canada. Partners in Amphibian and Reptile Conservation, Technical Publication HMG-4, Birmingham AL.

Olson, D.H. 2008. Conservation Assessment for the black salamander (Aneides flavipunctatus) in Oregon, Version 1.0. USDA Forest Service, Region 6, and Oregon BLM, Special Status Species Program.

Olson, D.H. 2008. Conservation Assessment for the California slender salamander (Batrachoseps attenuatus) in Oregon, Version 1.0. USDA Forest Service, Region 6, and Oregon BLM, Special Status Species Program.

Suzuki, N., D.H. Olson, and E.C. Reilly. 2008. Developing landscape habitat models for rare amphibians with small geographic ranges: a case study of Siskiyou Mountains salamander in the western USA. Biodiversity and Conservation 17:2197-2218.

2007

Suzuki, N. and D.H. Olson. 2007/2008/2009. Options for biodiversity conservation in managed forest landscapes of multiple ownerships in Oregon and Washington, USA. Biodiversity and Conservation 16:3895-3917. Reprinted Biodiversity and Conservation 17:1017-1039. Reprinted in: Brockerhoff, E.G., H. Jactel, J.A. Parrotta, C.P. Quine, J. Sayer, and D.L. Hawksworth (eds.). 2009. Plantation Forests and Biodiversity: Oxymoron or Opportunity? Springer, NY. 288 p.

Olson, D.H. 2007. Implementation considerations. Chapter 11. pp 303-333 In: Raphael, M.G. and R. Molina, eds. Conservation of Rare or Little-Known Species: Biological, Social, and Economic Considerations. Island Press.

Raphael, Martin G., Randy Molina, Curtis H. Flather, Richard Holthausen, Richard L. Johnson, Bruce G. Marcot, Deanna H. Olson, John D. Peine, Carolyn Hull Sieg, and Cindy S. Swanson. 2007. A Process for Selection and Implementation of Conservation Approaches. Chapter 12. In: Raphael, M.G. and R. Molina, eds. Conservation of Rare or Little-Known Species: Biological, Social, and Economic Considerations. Island Press.

Olson, D.H., P.D. Anderson, C.A. Frissell, H.H. Welsh Jr., and D.F. Bradford. 2007. Biodiversity management approaches for stream riparian areas: Perspectives for Pacific Northwest headwater forests, microclimate and amphibians. Forest Ecology and Management 246(1):81-107. [Recipient of Forest Ecology and Manaagment “Highly Cited Author” award, 2007-2010]

Olson, D.H. and C. Rugger. 2007. Preliminary study of the effects of headwater riparian reserves with upslope thinning on stream habitats and amphibians in western Oregon. Forest Science 53(2):331-342.

Olson, D. H. and G. Weaver. 2007. Vertebrate assemblages associated with headwater hydrology in western Oregon managed forests. Forest Science 53(2):343-355.

Rundio, D.E. and D.H. Olson. 2007. Influence of headwater site conditions and riparian buffers on terrestrial salamander response to forest thinning. Forest Science 53(2):320-330.

Rykken, J.J, A.R. Moldenke, and D.H. Olson. 2007. Headwater riparian forest-floor invertebrate communities associated with alternative forest management practices. Ecological Applications 17(4):1168-1183.

2006

Olson, D.H. (ed.) 2006. Biodiversity. Northwestern Naturalist 87.

Olson, D.H. 2006. Biodiversity conservation in the Pacific Northwest: a place holder. Northwestern Naturalist 87:1-9.

Sagar, J., D.H. Olson, and R. Schmitz. 2006. Survival and growth of larval coastal giant salamanders (Dicamptodon tenebrosus) in streams in the Oregon Coast Range. Copeia 2007: 123-130.

2005

Jones, L.L.C., W.P Leonard, and D.H. Olson (eds.). 2005. Amphibians of the Pacific Northwest. Seattle Audubon Society.

Mead, L.S., D.R. Clayton, R.S. Nauman, D.H. Olson, and M.E. Pfrender. 2005. Newly discovered populations of salamanders from Siskiyou County California represent a species distinct from Plethodon stormi. Herpetologica 61:158-177.