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MetaData for 2008 Amphibian Distribution Surveys in Wadeable Streams and Ponds in Western and Southeast Oregon, Information Reports Number 2010-05
2008 Amphibian Distribution Surveys in Wadeable Streams and Ponds in Western and Southeast Oregon, Information Reports Number 2010-05
- Originator: Tippery, S., B. Bangs and K. Jones
- Publish Date: November 2010
- Online Link: None
- BPA Project #:
- Agency: Oregon Department of Fish and Wildlife
- Name: Cedric Cooney
- Job Position: Natural Resources Data and Systems Manager
- Telephone: 503-947-6094
- E-Mail Address: firstname.lastname@example.org
- Abstract: The ODFW Oregon Conservation Strategy identified monitoring needs for 17 amphibian species
native to the state of Oregon that are designated as “Strategy species”, or Species of Greatest
Conservation Need (per USFWS requirements for State Wildlife Action Plans). The distribution
of many species of amphibians in western Oregon is sparsely documented (Oregon Conservation
Strategy, page 27). Although a broad-scale survey for amphibian presence would provide
important baseline information about amphibian species composition and distribution, most
studies have focused on limited areas.
The majority of Oregon’s amphibians rely on aquatic habitats at some point of their life, either
for breeding and juvenile development or to inhabit as adults. Most aquatic amphibians breed
from late winter to early summer, and adults frequently remain in or near their breeding sites into
the summer. Most tadpoles and juvenile amphibians are also active in and occupy aquatic
habitats during the summer. Ongoing aquatic habitat and fish surveys are opportunities to
observe species and life stages (breeding adults, tadpoles and juveniles) that occupy aquatic or
riparian habitats during the summer.
One cost-effective approach is to combine amphibian surveys with existing aquatic habitat and
fish surveys such as those conducted as part of the Oregon Plan for Salmon and Watersheds
(OCSRI 1997). The Oregon Plan has been in place since 1997 and the monitoring component
provides a survey framework for streams in the lower Columbia River and Oregon coast
drainages. The sampling framework is also compatible with implementation of the aquatic
components of the Conservation Strategy, as demonstrated by this study. This study describes
the presence of amphibians in and along wadeable streams in coast and lower Columbia River
drainages of Oregon, ponds and sloughs in the Willamette Valley, and selected streams in the
Great Basin of southeast and central Oregon.
As a component of monitoring under the Oregon Plan, the Aquatic Inventories Project (AIP)
conducts aquatic habitat surveys at randomly selected and spatially balanced sites across all 1st
through 4th order streams in coastal and lower Columbia River drainages. The purpose of the
habitat surveys is to describe stream morphology, instream physical habitat, and riparian
vegetation. Because the surveyors were already observing features within and alongside the
stream channel, they were able to record observations of amphibians. The amphibian component
was consistent with the survey protocol used by the US Geological Survey’s Amphibian
Research and Monitoring Initiative (http://armi.usgs.gov/). The advantage of coupling an
amphibian component with the OR Plan aquatic surveys was that it not only was an efficient use
of resources, but more importantly, provided information using a statistically rigorous survey
design across a broad geographic area.
The Native Fish Investigations Project began a six year study in 2007 to document the
distribution and abundance of redband trout in the Great Basin region of Eastern Oregon. The
site selection procedure is comparable to the statistical standards as the Oregon Plan survey
Amphibian data are also collected during three other survey projects, and although the site
selection procedure does not conform to the same statistical standards as the Oregon Plan survey
design, the projects offer a number of opportunities to collect amphibian occurrence information
over a wide variety of habitats. The amphibian observations from these three projects are also
included in this report. The three projects are as follows:
• AIP conducts aquatic habitat surveys on selected streams throughout the state.
• AIP conducts aquatic habitat surveys at stream habitat restoration projects in Western
• Native Fish Project conducts surveys of pond and slough sites for Oregon chub in the
Due to the success of the 2006 and 2007 field studies, we continued our research during the
summer of 2008 to improve our knowledge of distribution and community structure of
amphibians. The summer 2008 surveys took place in 9 of Oregon’s 10 ecoregions (Figure 1)
(Thorson et al. 2003). Ecoregions provide a framework for discussing amphibian distribution
across the state because they are relatively large areas defined by distinctive geographic and
ecological (flora and fauna) characteristics.
The goals of our 2008 work were to:
• Increase the consistency, efficiency and ability of habitat crews in identifying amphibians
through improved training.
• Increase knowledge of distribution, community structure, and habitat associations of
amphibians in streams in:
o Western Oregon coastal and lower Columbia drainages.
o Ponds, sloughs and other off-channel aquatic habitats in the Willamette Valley.
o Great Basin of eastern Oregon and selected streams in central Oregon.
• Combine the 2008 observations with the 2006-07 results.
- Time Period of Content:
- Geographic Extent: Stream and ponds of Western and Southeast Oregon
- Status: Final
- Use Constraints:
- Format: PDF File
Data Quality Information
- No data information was supplied.
Entity and Attribute Information
- Attributes Description: Field attribute information is available in the attached file(s).
Is a physical copy maintained for reference at Headquarters?
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