| Area | Basin-wide/Regional |
| Topic | Amphibs: Sensitive Species and Vegetation with Photo Tour |
Depicted above are tailed frog juveniles sampled by Redwood Sciences staff with kick screens in a Mattole River tributary. Photo courtesy of Dr. Hartwell Welsh, Redwood Sciences Lab.
Pictured above is a Southern Olympic salamander juvenile briefly removed from the water for photographing. Photo courtesy of Dr. Hartwell Welsh, Redwood Sciences Lab.
This adult black salamander was collected by Redwood Sciences Lab during Mattole River surveys. Photo courtesy of Dr. Hartwell Welsh, Redwood Sciences Lab.
Adult Pacific giant salamanders may sometimes remain under water and retain gills in some streams. This species is highly adaptable and can inhabit streams in many different forest types. They are also may predators on other amphibians, such as the tailed frog. Photo courtesy of Dr. Hartwell Welsh, Redwood Sciences Lab.
This photo is of Dream Stream which represents late seral forest conditions in the Redwood Sciences Lab Mattole River study. Photo courtesy of Dr. Hart Welsh, Redwood Sciences Lab, Arcata.
This photo is of an unnamed tributary just downstream of Finley Creek represents late second growth forest conditions in the Redwood Sciences Lab Mattole River study. Photo courtesy of Dr. Hart Welsh, Redwood Sciences Lab, Arcata.
This photo is of upper Sweethome represents mixed grassland and coniferous forest conditions in the Redwood Sciences Lab Mattole River study. Photo courtesy of Dr. Hart Welsh, Redwood Sciences Lab, Arcata.
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