Divergent patterns of abundance and age-class structure of headwater stream tadpoles in burned and unburned watersheds
Links
- More information: Publisher Index Page
- Download citation as: RIS | Dublin Core
Abstract
Wildfire is a potential threat to many species with narrow environmental tolerances like the Rocky Mountain tailed frog (Ascaphus montanus Mittleman and Myers, 1949), which inhabits a region where the frequency and intensity of wildfires are expected to increase. We compared pre- and post-fire counts of tadpoles in eight streams in northwestern Montana to determine the effects of wildfire on A. montanus. All streams were initially sampled in 2001, 2 years before four of them burned in a large wildfire, and were resampled during the 2 years following the fire. Counts of tadpoles were similar in the two groups of streams before the fire. After the fire, tadpoles were almost twice as abundant in unburned streams than in burned streams. The fire seemed to have the greatest negative effect on abundance of age-1 tadpoles, which was reflected in the greater variation in same-stream age-class structure compared with those in unburned streams. Despite the apparent effect on tadpoles, we do not expect the wildfire to be an extirpation threat to populations in the streams that we sampled. Studies spanning a chronosequence of fires, as well as in other areas, are needed to assess the effects of fires on streams with A. montanus and to determine the severity and persistence of these effects.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Divergent patterns of abundance and age-class structure of headwater stream tadpoles in burned and unburned watersheds |
| Series title | Canadian Journal of Zoology |
| Volume | 84 |
| Issue | 10 |
| Year Published | 2006 |
| Language | English |
| Publisher | Canadian Science Publishing |
| Contributing office(s) | Northern Rocky Mountain Science Center |
| Description | 7 p. |
| First page | 1482 |
| Last page | 1888 |
| Country | United States |
| State | Montana |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |