# Dynamics of large wood in streams: Tagged log inventory, Mack Creek, Andrews Experimental Forest, 1985 to 2008 ## 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 - **Temporal coverage:** 1985-10-20 to 2008-11-10 - **Principal Investigator:** Stanley V. Gregory ## Data Entities 1. GS00601 ## Entity 1: GS00601 ### Attribute list - **DBCODE** — varchar, enum FSDB Database code - **GS006** — FSDB Data set code GS006 - **ENTITY** — numeric(1), range 1.0000 1.0000, number Entity number - **SITECODE** — varchar, enum Location of study site - **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) - **YEAR** — datetime, freetext Year surveyed - **GRID** — numeric(10.000000), range -30.0000 1030.0000, meters Reach and section within grid - **LOGID** — varchar, freetext Log identification (tag color, number, letter (letter indicates log is broken & at least one tag is missing)) - **STATUS** — varchar, enum Condition of log during year surveyed - **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 - **FRAGCODE** — varchar, enum Fragmentation code - **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) - **LOCATION** — varchar, enum Geomorphic location code - **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 - **POSITION** — varchar, enum Geomorphic position clode - **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 - **SIGHTTAG** — varchar, enum Sight tag from which bearing is shot - **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 - **BEARING** — numeric(1.000000), range 0.0000 360.0000, degrees azimuth Compass bearing along one side of log - **ORIENT** — varchar, enum Orientation - **N** — Normal to channel - **P** — Parallel to channel - **X** — No particular orientation - **ROOTWAD** — varchar, enum Rootwad (present or absent) - **Y** — Rootwad present - **X** — Rootwad absent - **UPSTREAM** — varchar, enum Upstream-most tag - **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 - **INBOARD** — varchar, enum Inboard-most tag - **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 - **ORIGIN** — varchar, enum Origin of log if known - **O** — Original position (fell in or missing in earlier years) - **F** — Floated - **S** — Slash - **X** — Unknown - **ACCUM** — varchar, enum Log in accumlation (5 or more logs, must be touching) or not - **A** — In an accumulation (5 or more logs touching) - **X** — Not in an accumulation - **DECAY** — varchar, enum Decay class (based on Maser & Sedell) - **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 - **STABILITY1** — varchar, enum Stability code 1 -- unstable - **Y** — No stabilizing factor - **X** — Some other stabilizing factor - **STABILITY2** — varchar, enum Stability code 2 -- stabilized by rock - **Y** — Log stabilized by boulder - **X** — Log not stabilized by boulder - **STABILITY3** — varchar, enum Stability code 3 -- stabilized by another log - **Y** — Log stabilized by other logs - **X** — Log not stabilized by other logs - **STABILITY4** — varchar, enum Stability code 4 -- stabilized by tree - **Y** — Log stabilized by tree (bole or roots) - **X** — Log not stabilized by tree - **MOSS** — varchar, enum Moss percent cover code - **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 - **DIAMETER** — numeric(0.010000), range 0.0000 2.2000, meters Diameter in middle of log - **LENGTH** — numeric(0.010000), range 0.0000 51.0000, meters Length - **LENGPLUS** — varchar, enum Length plus (one or both ends buried) - **Y** — One or both ends of log buried - **X** — Neither end of log buried - **PCTZONE1** — numeric(1), range 0.0000 100.0000, percent Percent of log in zone 1 (wetted channel) (Beschta) - **PCTZONE2** — numeric(1), range 0.0000 100.0000, percent Percent of log in zone 2 (active channel) (Beschta) - **PCTZONE3** — numeric(1), range 0.0000 100.0000, percent Percent of log in zone 3 (suspended above active channel) (Beschta) - **PCTZONE4** — numeric(1), range 0.0000 100.0000, percent Percent of log in zone 4 (floodplain) (Beschta) - **COMMENTS** — varchar, freetext Notes ## 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 ### DBCODE - **GS006** — FSDB Data set code GS006 ### SITECODE - **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) ### STATUS - **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 ### FRAGCODE - **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) ### LOCATION - **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 ### POSITION - **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 ### SIGHTTAG - **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 ### ORIENT - **N** — Normal to channel - **P** — Parallel to channel - **X** — No particular orientation ### ROOTWAD - **Y** — Rootwad present - **X** — Rootwad absent ### UPSTREAM - **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 ### INBOARD - **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 ### ORIGIN - **O** — Original position (fell in or missing in earlier years) - **F** — Floated - **S** — Slash - **X** — Unknown ### ACCUM - **A** — In an accumulation (5 or more logs touching) - **X** — Not in an accumulation ### DECAY - **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 ### STABILITY1 - **Y** — No stabilizing factor - **X** — Some other stabilizing factor ### STABILITY2 - **Y** — Log stabilized by boulder - **X** — Log not stabilized by boulder ### STABILITY3 - **Y** — Log stabilized by other logs - **X** — Log not stabilized by other logs ### STABILITY4 - **Y** — Log stabilized by tree (bole or roots) - **X** — Log not stabilized by tree ### MOSS - **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 ### LENGPLUS - **Y** — One or both ends of log buried - **X** — Neither end of log buried