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Recent studies of headwater streams in the Mattole River basin showed that intermittent streams are very important for black salamanders. The high density was in part owing to high numbers of juveniles, suggesting that intermittent reaches may be very important for rearing areas for this species. Data provided by the H. Welsh, USFS -PSW Redwood Sciences Lab in Arcata, California from research not yet published.
Graphs and photographs from Dr. H. H. Welsh, Redwood Sciences Lab
From the Mattole River Basin:
Richness of amphibian species in 3 forest cover types (47 KB)
Air temperatures vs. distance from stream for three forest types (45 KB)
Abundance of Black Salamanders in perennial and intermittent streams (40 KB)
| Examples of the three forest cover types in the Mattole River basin: | ||
| Late seral | Second growth | Second growth and grassland mixed |
From regional studies:
Number of tailed frogs plotted against age of forest and air temperature (45 KB)
Abundance of So. torrent Salamander vs. % canopy (35 KB)
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Table of Contents for Background Pages |
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| Stream Conditions: | Water Quality | Sediment | Riparian | Big Wood | Habitat Types |
| Watershed Conditions: | Vegetation Types | Slope Stability | Roads & Erosion | Cumulative Impacts | Urbanization |
| Fish & Aquatic Life: | Fish Populations | Amphibians | Aquatic Insects | Hatcheries | Fish Disease |
| Restoration: | Stream Clearance | In-stream Structures | Riparian | Watershed | Strategy |
| Geology / Hydrology: | Geology | Soils | Precipitation | Stream Flow | Channel Processes |
| Policy & Regulation | ESA | TMDL | Forest Rules | 1603 Permits | Water Rights |
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