Application of a hierarchical habitat unit classification system: stream habitat and salmonid distribution in Ward Creek, southeast Alaska.

Bryant,; Wright, Brenda E.; Davies, Bryce

doi:10.2737/pnw-rn-508

Cited by 5 publications

(2 citation statements)

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“…Differences observed in the distribution of coho salmon parr among habitat types followed patterns observed elsewhere in southeast Alaska and the Pacific Northwest (Bisson et al 1981;Bryant et al 1992). Higher densities and greater over-winter survival were observed in backwater and off-channel habitats than in other habitats in Maybeso Creek in southeast Alaska (Bryant 1985).…”

Section: Discussionmentioning

confidence: 61%

“…Stream habitat.-Habitat units were identified and measured with a tape or sonic distancemeasuring device. They were separated into a hierarchial system, based on stream hydrology, and divided into pools (PL) -backwater (PL-BK), scour (PL-SR), off-channel (PL-OC), and sidechannel (SC-PL) -and fast-water units-riffles (RF) and glides (GL) (Bryant et al 1992). The minimum size for a habitat unit was 4 m 2 .…”

Section: Methodsmentioning

confidence: 99%

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Coho Salmon Populations in the Karst Landscape of North Prince of Wales Island, Southeast Alaska

Bryant

Swanston

Wissmar

et al. 1998

Transactions of the American Fisheries Society

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Karst topography is a unique and distinct landscape and its geology may have important implications for salmon productivity in streams. The relationship between salmonid communities and water chemistry and the influence of habitat was examined in a set of streams on north Prince of Wales Island, southeast Alaska. Streams in karst landscapes showed higher alkalinities (1,500-2,300 eq/L) than streams not influenced by karst landscapes (750-770 eq/L). A significant, positive relationship was observed between alkalinity and density of coho salmon parr Oncorhynchus kitsutch. Backwater pools supported higher densities of coho salmon than did other habitat units. Both coho salmon fry and parr tended to be larger in most karst-influenced streams than in nonkarst streams. Although past timber harvest practices in the riparian areas of several of the streams appeared to influence stream habitat and water temperature, streams flowing through karst landscapes had a distinct water chemistry. Furthermore, these streams appeared to support more fish than nonkarst streams.

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Section: Discussionmentioning

confidence: 61%

Section: Methodsmentioning

confidence: 99%