GS016
Coarse woody debris, amount and distribution of in Lookout Creek, Andrews Experimental Forest 1991

CREATOR(S): Futoshi Nakamura, Frederick J. Swanson

PRINCIPAL INVESTIGATOR(S): Frederick J. Swanson

ORIGINATOR(S): Futoshi Nakamura

OTHER RESEARCHER(S): Futoshi Nakamura

DATA SET CONTACT PERSON: Frederick J. Swanson

ABSTRACTOR: Futoshi Nakamura

METADATA CREATION DATE:

29 Jan 1992

MOST RECENT METADATA REVIEW DATE:

17 Dec 2012

KEYWORDS:

Disturbance, Organic matter, geomorphology, disturbance, woody debris, coarse woody debris, organic matter, aquatic ecosystems, streams

PURPOSE:

To determine the amount and spatial distribution of coarse woody debris on the mainstem of Lookout Creek to assess patterns of wood in relation to river morphology (e.g., channel form, degree of valley-floor constraint).

METHODS:

Experimental Design - GS016 :

Description: Field mapping of coarse woody degris with measurements of length, diameter, decay class, location, orientation, and pool formation. Calculation of channel width and sinuousity from GIS map.

Field Methods - GS016 :

Description: From July to Sept of 1991, mapping was carried out by using the valley floor map created in a GIS. Other characteristics of the woody debris were measured in the field by tape and observation, except orientation which was indirectly measured based on the GIS map. Average channel width and sinuousity were calculated from the GIS map as well.

SITE DESCRIPTION:

The study area is the valley floor of a mountain watershed. Gradient is steep (ca. 0.02), substrate is large boulders, large wood (pieces of old-growth trees with diameters up to nearly 2 m) is abundant, and channel reaches vary from wide and braided to highly constrained by bedrock, alluvial fans from tributaries and also large landslide deposits from adjacent hillslopes.

TAXONOMIC SYSTEM:

None

GEOGRAPHIC EXTENT:

Mainstem (fifth-order reach) of Lookout Creek in the Andrews Experimental Forest, western Oregon Cascades.

ELEVATION_MINIMUM (meters):

ELEVATION_MAXIMUM (meters):

MEASUREMENT FREQUENCY:

once

PROGRESS DESCRIPTION:

Complete

UPDATE FREQUENCY DESCRIPTION:

notPlanned

CURRENTNESS REFERENCE:

Ground condition