NUMBERING SYSTEM EXPLANATION

The LIDET study had a basic problem in that we initially used a numbering system with four digits and then ended up with well over 10,000 samples. This left us with non-unique designations for our samples which constantly caused headaches during data management and sample analysis. Our solution was to add a fifth digit in a systematic way to the initial designations. The following key will allow you to move between the four digit aluminum tag numbers you have been using and the five digit numbers we have adopted. These five digit numbers are presently known as NIR NUM because we first used them in our Near Infrared Reflectance Analyzer.


NIR_NUM		sample class

<10,000		Original Site Leaves
		Original Site Leaf Pools

10,000's	New Site Leaves        New Sites Are:
		                       BCI BSF CV GSF
				       JUN LVW MTV

20,OOO's	New Site Leaf Pools

30,OOO's	All Sites Roots

40,OOO's	All Sites Root Pools

50,000's	Initial Dowel Set, All Sites

60,000's	Initial Dowel Pools, All Sites

70,000's 	1994 New Dowels, All Sites

80,000's	and Problem Numbers

90,000's        1994 New Dowel Pools, All Sites

95,000's        Initial Material Samples, All Sites

Examples:

l) Sample 629 from JUN, Rep 1, Time 3, DRGL-L would have 20,000 added to it' s tag number because it is a new site leaf, thus it's NIR NUM is 20629.

2) Sample 6486 from AND, Rep 3, Time 4, ANGE-R would have 40,000 added to it ' s tag number because it is a root, thus it's NIR-NUM would be 46486.

3) The Pooled sample from the first example; containing portions of JUN, Time 3, Rep 1-4, DRGL-L, Samples 629-632 would have the NIR NUM 30629. The tag number would have 30,000 added because it is a new site pooled leaf sample, and pooled samples hold the Rep 1 tag number.