The role of structure in the physical habitat of anadromous salmonids

Thomas E. Lisle

Treesearch

The role of structure in the physical habitat of anadromous salmonids

Informally Refereed

Authors:

Thomas E. Lisle

Year:

1983

Type:

Miscellaneous Publication

Station:

Pacific Southwest Research Station

Source:

In: C. Toole, B. Wyatt, S. Sommarstrom, and K. Hashagen (eds.), Report of the First California Salmon and Steelhead Restoration Conference, Bodega Bay, 22-23 January 1983 California Sea Grant College Program; pp. 43-46.

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Abstract

A fundamental difference between a canal and a natural stream is structure. Structure includes all the typical anomalies of natural streams that deflect the general downstream flow, such as bends, bars, bedrock knobs, boulders, landslide deposits, and large woody debris. This results in the storage of watershed products in the channel, and in a great heterogeneity in depth, velocity, stream gradient, and substrate conditions. In this paper, I will discuss these functions of structure in salmon habitat and some implications for restoration of habitat.

Keywords

PSW4351, canal, stream, anadromous salmonid, watershed, stream channels, sediment

Citation

Lisle, Thomas E. 1983. The role of structure in the physical habitat of anadromous salmonids. In: C. Toole, B. Wyatt, S. Sommarstrom, and K. Hashagen (eds.), Report of the First California Salmon and Steelhead Restoration Conference, Bodega Bay, 22-23 January 1983 California Sea Grant College Program; pp. 43-46.