FOREST DATA LIABILITY DISCLAIMER AND FORMAT DESCRIPTION Disclaimer These data have been generated by State agencies under contract with the Department of the Interior and the Environmental Management Technical Center (EMTC), and by the Rock Island District Natural Resource Management Section of the U.S. Army Corps of Engineers. Although these data have been processed successfully on a computer system at the EMTC, no warranty, expressed or implied, is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. However, error correction is a continuing process, and the EMTC routinely makes changes to data as errors are discovered. The file date is referred to as the release date and should be mentioned in all references to data. These data have been provided as a unit package to ensure that you receive a valid dataset collected in a consistent manner. Methods, purposes, and conditions can vary dramatically among data-collecting efforts and these data should not be combined with other datasets from the EMTC or other sources unless the user fully understands the procedures and purposes used to create each set of data and can verify that data are comparable across sources. ------------------------------------------------------------------------------ FILE FORMAT EACH VARIABLE IS WRITTEN IN A FIXED FIELD IN ASCII CHARACTER FORMAT. THE "FORMAT" COLUMN ADAPTS SAS FORMAT SPECIFIERS. FIELD FIELD NAME POSITION FORMAT ---------- -------- ------ RIVER 1-2 $2. RIVER MILE 5-9 5.1 REACH 12-17 $aaccccc TRANSECT 20-22 2.0 SAMPLING POINT 25-26 2.0 GROUP 29-29 $1. QUAD 33-34 $2. SPECIES 37-66 $30. DBH 69-73 5.1 VIGOR 76-76 $1. 1993 FLOODING 79-79 $1. PTT 82-87 6.1 SITE GEOMORPHOLOGY 90-91 $2. TOP SOIL CHANGE 94-94 $1. TOP SOIL TYPE 97-98 $2. DIST 101-103 4.0 DATE 106-113 MM/DD/YY CREW 115-135 $20. ------------------------------------------------------------------------------ FIELD DESCRIPTIONS ------------------ RIVER UM=upper Mississippi River IL=Illinois River RIVER MILE the navigation river mile where the transect is located REACH POOL04=POOL 4 POOL08=Pool 8 POOL13=Pool 13 POOL17=Pool 17 POOL22=Pool 22 POOL26=Pool 26 RIVROP=unimpounded reach near Cape Girardeau, MO HAVANA=La Grange Pool TRANSECT 1-15 SAMPLING POINT numbered in the field GROUP T=tree S=sapling QUAD NE, NW, SW, SE sections SPECIES Nomenclature follow Gleason and Cronquist (1991) DBH Diameter of tree at breast height (1.4 m)in centimeters VIGOR F=fine, D=damaged, K=flood-induced mortality O=mortality not caused by the flood 1993 FLOODING Y=flooded in 1993, N=not flooded in 1993 PTT Distance between the tree and the sampling site center in meters SITE GEOMORPHOLOGY TE=terrace, FL=level floodplain, SL=slough SW=swamp, RI=ridge TOP SOIL CHANGE D=sediment deposition, S=sediment scoured away I=no deposition nor scouring away TOP SOIL TYPE SA=sand, SI=silt, Cl=clay DIST DIST=distance to the nearest channel in meters DATE month, day, year of field investigation CREW initials of the field crew members SPECIAL ATTENTIONS In the procedure manual trees are defined as woody stems (excluding vines) 10 cm or greater in DBH and saplings are defined as woody stems (excluding vines) 2.5 to 9.9 cm in DBH. These definitions were adapted when data were collected in Pools 04, 08, 13, 17, 22, and 26, and the open river along the UMR. Because of an error made by the field crew, these definitions were altered when data were collected in the Havana reach on Illinois River. There, trees were defined as woody stems (excluding vines) that were at least 10 cm in diameter and whose crown were in the canopy layer; and saplings were defined as woody stems (excluding vines) that were in the understory but were 2.5 cm or greater in DBH.