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GS006 – Simplified metadata

← Back to GS006 detail

Dataset

Database Code
GS006
Title
Dynamics of large wood in streams: Tagged log inventory, Mack Creek, Andrews Experimental Forest, 1985 to 2008
Abstract
Although many studies have identified the characteristics of wood stored in streams, few have attempted to measure the long-term dynamics of large wood. From 1982-1985, we developed a long-term study of input, storage, decomposition, and redistribution of large wood in Mack Creek. Each year from 1985 to the present, we have surveyed a 1.1 km section of this stream. This annual survey has allowed us to quantify the standing stocks and characteristics of large wood within the stream and floodplain of an old-growth forest and an older (ca. 1963) clear-cut. In addition, these data allow us to measure rates of input, fragmentation and movement.
Keywords
geomorphology; ecology; stream ecology; debris flows; floods; biomass; wind; decomposition; biological processes; disturbance; wood; woody debris; ecosystems; aquatic ecosystems; streams; ecosystem processes; disturbance
Date begin
1985-10-20
Date end
2008-11-10
Principal Investigator
Stanley V. Gregory

Entities

  1. GS00601

1. GS00601 - Attribute list

GS00601 - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 1.0000 1.0000 number
SITECODE varchar enum
YEAR datetime freetext
GRID numeric(10.000000) range -30.0000 1030.0000 meters
LOGID varchar freetext
STATUS varchar enum
FRAGCODE varchar enum
LOCATION varchar enum
POSITION varchar enum
SIGHTTAG varchar enum
BEARING numeric(1.000000) range 0.0000 360.0000 degrees azimuth
ORIENT varchar enum
ROOTWAD varchar enum
UPSTREAM varchar enum
INBOARD varchar enum
ORIGIN varchar enum
ACCUM varchar enum
DECAY varchar enum
STABILITY1 varchar enum
STABILITY2 varchar enum
STABILITY3 varchar enum
STABILITY4 varchar enum
MOSS varchar enum
DIAMETER numeric(0.010000) range 0.0000 2.2000 meters
LENGTH numeric(0.010000) range 0.0000 51.0000 meters
LENGPLUS varchar enum
PCTZONE1 numeric(1) range 0.0000 100.0000 percent
PCTZONE2 numeric(1) range 0.0000 100.0000 percent
PCTZONE3 numeric(1) range 0.0000 100.0000 percent
PCTZONE4 numeric(1) range 0.0000 100.0000 percent
COMMENTS varchar freetext

Attribute definitions

ACCUM
Log in accumlation (5 or more logs, must be touching) or not
BEARING
Compass bearing along one side of log
COMMENTS
Notes
DBCODE
FSDB Database code
DECAY
Decay class (based on Maser & Sedell)
DIAMETER
Diameter in middle of log
ENTITY
Entity number
FRAGCODE
Fragmentation code
GRID
Reach and section within grid
INBOARD
Inboard-most tag
LENGPLUS
Length plus (one or both ends buried)
LENGTH
Length
LOCATION
Geomorphic location code
LOGID
Log identification (tag color, number, letter (letter indicates log is broken & at least one tag is missing))
MOSS
Moss percent cover code
ORIENT
Orientation
ORIGIN
Origin of log if known
PCTZONE1
Percent of log in zone 1 (wetted channel) (Beschta)
PCTZONE2
Percent of log in zone 2 (active channel) (Beschta)
PCTZONE3
Percent of log in zone 3 (suspended above active channel) (Beschta)
PCTZONE4
Percent of log in zone 4 (floodplain) (Beschta)
POSITION
Geomorphic position clode
ROOTWAD
Rootwad (present or absent)
SIGHTTAG
Sight tag from which bearing is shot
SITECODE
Location of study site
STABILITY1
Stability code 1 -- unstable
STABILITY2
Stability code 2 -- stabilized by rock
STABILITY3
Stability code 3 -- stabilized by another log
STABILITY4
Stability code 4 -- stabilized by tree
STATUS
Condition of log during year surveyed
UPSTREAM
Upstream-most tag
YEAR
Year surveyed

Enumerated domains

Enumerated domain for attribute: DBCODE

Codes for DBCODE
Code Description
GS006 FSDB Data set code GS006

Enumerated domain for attribute: SITECODE

Codes for SITECODE
Code Description
CC Mack Creek wood: clear-cut forest, bottom of wood reach (0 meters)
CT Mack Creek wood: culvert and bridge, between clear-cut and old-growth wood reaches (~360 meters)
OG Mack Creek wood: old-growth forest, top of wood reach (1020 meters)

Enumerated domain for attribute: STATUS

Codes for STATUS
Code Description
F Found
L Likely still in previous location; no search due to large size & floodplain location OR deep snow (2003)
M Moved
MR Moved and retired
NR New and retired
O Original
OR Original and retired
P Probable
R Retired
V Overlooked
VR Overlooked and retired
X Not found
XMR Not found, moved, then retired
XR Not found and retired
N New input

Enumerated domain for attribute: FRAGCODE

Codes for FRAGCODE
Code Description
C Child piece of fragmented log (portion moved from original position, or smaller of movers)
N Not fragmented
P Parent piece of fragmented log (in original position or, if mover, larger than child piece)

Enumerated domain for attribute: LOCATION

Codes for LOCATION
Code Description
1 Completely on bank in island reach
2 Anchored on or in bank
3 Spanning active channel
4 Completely in active channel
5 Completely on island
6 Anchored on inboard bank of island
7 Completely in side channel
8 Anchored on outboard bank of island
9 Side channel spanner
10 Completely on bank in island reach

Enumerated domain for attribute: POSITION

Codes for POSITION
Code Description
L Left side of channel (facing upstream)
R Right side of channel (facing upstream)
C Center of channel
H Head of island
X None applicable

Enumerated domain for attribute: SIGHTTAG

Codes for SIGHTTAG
Code Description
MA Bearing taken from end of log where A tag should be located if the entire log were present
MB Bearing taken from end of log where B tag should be located if the entire log were present
MC Bearing taken from end of log where C tag should be located if the entire log were present
MD Bearing taken from end of log where D tag should be located if the entire log were present
A Bearing taken from A tag
AC Bearing taken from AC end of log
B Bearing taken from B tag
BD Bearing taken from BD end of log
C Bearing taken from C tag
D Bearing taken from D tag
AXIS Bearing taken along primary log axis
BANK Bearing taken from nearest stream bank
VERT Log vertical, no bearing possible
X Bearing not possible due to orientation of log and/or missing sighttags
M Bearing taken, but sighttag not recorded

Enumerated domain for attribute: ORIENT

Codes for ORIENT
Code Description
N Normal to channel
P Parallel to channel
X No particular orientation

Enumerated domain for attribute: ROOTWAD

Codes for ROOTWAD
Code Description
Y Rootwad present
X Rootwad absent

Enumerated domain for attribute: UPSTREAM

Codes for UPSTREAM
Code Description
MA A tag would be upstream-most, but tag is missing
MB B tag would be upstream-most, but tag is missing
MC C tag would be upstream-most, but tag is missing
MD D tag would be upstream-most, but tag is missing
A A tag is upstream most tag
B B tag is upstream most tag
C C tag is upstream most tag
D D tag is upstream most tag
X Upstream determination not possible due to orientation of log or missing tags

Enumerated domain for attribute: INBOARD

Codes for INBOARD
Code Description
MA A tag would be inboard-most, but tag is missing
MB B tag would be inboard-most, but tag is missing
MC C tag would be inboard-most, but tag is missing
MD D tag would be inboard-most, but tag is missing
A A tag is inboard most tag
B B tag is inboard most tag
C C tag is inboard most tag
D D tag is inboard most tag
X Inboard determination not possible due to orientation of log or missing tags

Enumerated domain for attribute: ORIGIN

Codes for ORIGIN
Code Description
O Original position (fell in or missing in earlier years)
F Floated
S Slash
X Unknown

Enumerated domain for attribute: ACCUM

Codes for ACCUM
Code Description
A In an accumulation (5 or more logs touching)
X Not in an accumulation

Enumerated domain for attribute: DECAY

Codes for DECAY
Code Description
1 Bark firmly attached
1.5 Intermediate between classes 1 and 2
2 Bark loosely attached
2.5 Intermediate between classes 2 and 3
3 No bark
3.5 Intermediate between classes 3 and 4
4 Punky
4.5 Intermediate between classes 4 and 5
5 No bark, extensive decay, log fragmenting and no longer a cylinder, soon to become soil

Enumerated domain for attribute: STABILITY1

Codes for STABILITY1
Code Description
Y No stabilizing factor
X Some other stabilizing factor

Enumerated domain for attribute: STABILITY2

Codes for STABILITY2
Code Description
Y Log stabilized by boulder
X Log not stabilized by boulder

Enumerated domain for attribute: STABILITY3

Codes for STABILITY3
Code Description
Y Log stabilized by other logs
X Log not stabilized by other logs

Enumerated domain for attribute: STABILITY4

Codes for STABILITY4
Code Description
Y Log stabilized by tree (bole or roots)
X Log not stabilized by tree

Enumerated domain for attribute: MOSS

Codes for MOSS
Code Description
1 Less than 5 percent of log covered by moss
2 Between 5 and 25 percent of log covered by moss
3 Between 25 and 75 percent of log covered by moss
4 More than 75 percent of log covered with moss

Enumerated domain for attribute: LENGPLUS

Codes for LENGPLUS
Code Description
Y One or both ends of log buried
X Neither end of log buried