| Autor: |
Rasmussen, Eric J., Vander Vorste, Ross W., Troelstrup Jr., Nels H. |
| Předmět: |
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| Zdroj: |
Proceedings of the South Dakota Academy of Science; 2008, Vol. 87, p55-62, 8p, 2 Charts, 3 Graphs, 1 Map |
| Abstrakt: |
Headwater streams are linked tightly with terrestrial systems and contribute directly to downstream channel habitat and water quality. They comprise the majority of stream miles in South Dakota but have received little attention. The objective of this effort was to assess differences in physical habitat between intermittent streams of the Prairie Coteau (PC) (n = 6) and those of the Prairie Coteau Escarpment (PCE) (n = 4). Habitat sampling occurred during the summer of 2007 following protocols of EPA (Peck et al. 2006) and Fritz et al. (2006). Results demonstrated no significant differences for bankfull width (p = 0.25), bankfull height (p = 0.55) and incised height (p = 0.39). Large and small tree canopy cover (> 5 m high) and woody understory cover (0.5 to 5.0 m high) were greater at PCE sites than PC sites. Alien plants were more prevalent at PC sites than PCE sites, and riparian human disturbances were more prevalent at PCE sites than PC sites. Results of this effort demonstrate differences among key riparian components from minimally disturbed streams of two level IV ecoregions. Continuing efforts will allow habitat comparisons and between-year comparisons among a larger number of level IV ecoregions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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