# Fine woody detritus volume and mass in small watersheds at Andrews Experimental Forest, 2002 to 2003 ## Dataset - **Database Code:** TD024 - **Title:** Fine woody detritus volume and mass in small watersheds at Andrews Experimental Forest, 2002 to 2003 - **Abstract:** Four small watersheds (WS06, WS07, WS08, and WS09) at the Andrews Experimental Forest were inventoried for fine woody detritus (FWD) using the line transect method as described in Guidelines for measurements of woody detritus in forest ecosystems (Harmon and Sexton 1996). In each watershed plot, four transects of 4 meters in length were inventoried. Slopes of the transect were determined as the plots were not laid out slope corrected. The number of pieces of FWD were tallied along each transect for two size classes, 0.63-2.54 cm and 2.54-7.62 cm. Volume calculations were determined by use of the formula in Harmon and Sexton 1996. Mean bulk density was determined from samples collected and measured. Field measurements used to determine density included diameter and length. In the lab, the samples were weighed to determine wet weight and dried. - **Keywords:** inventories; detritus; inorganic nutrients; woody debris; organic matter; fine woody debris; inorganic nutrients; organic matter - **Temporal coverage:** 2002-06-17 to 2003-09-30 - **Principal Investigator:** Mark E. Harmon ## Data Entities 1. TD02401 2. TD02402 ## Entity 1: TD02401 ### Attribute list - **DBCODE** — varchar, enum FSDB Database code - **TD024** — FSDB database code TD024 - **ENTITY** — numeric(1.000000), range 1.0000 1.0000, number Entity number - **PSP_STUDYID** — varchar, enum Permanent Study Plots (PSP) study identification code - a mutually exclusive grouping of study forest stands - **HJWS** — Andrews Forest and vicinity Watershed Reference Stands - **STANDID** — varchar, enum Watershed identification code - **WS06** — Andrews Watershed 6 - **WS07** — Andrews Watershed 7 - **WS08** — Andrews Watershed 8 - **WS09** — Andrews Watershed 9 - **PLOTID** — varchar, enum Plot identification number (standid+original plot number) - **WS060104** — Permanent Watershed Plot in Watershed 6, transect 1, plot 04 - **WS060106** — Permanent Watershed Plot in Watershed 6, transect 1, plot 06 - **WS060214** — Permanent Watershed Plot in Watershed 6, transect 2, plot 14 - **WS060318** — Permanent Watershed Plot in Watershed 6, transect 3, plot 18 - **WS060319** — Permanent Watershed Plot in Watershed 6, transect 3, plot 19 - **WS060321** — Permanent Watershed Plot in Watershed 6, transect 3, plot 21 - **WS060323** — Permanent Watershed Plot in Watershed 6, transect 3, plot 23 - **WS060325** — Permanent Watershed Plot in Watershed 6, transect 3, plot 25 - **WS060538** — Permanent Watershed Plot in Watershed 6, transect 5, plot 38 - **WS060539** — Permanent Watershed Plot in Watershed 6, transect 5, plot 39 - **WS060541** — Permanent Watershed Plot in Watershed 6, transect 5, plot 41 - **WS060543** — Permanent Watershed Plot in Watershed 6, transect 5, plot 43 - **WS060545** — Permanent Watershed Plot in Watershed 6, transect 5, plot 45 - **WS060754** — Permanent Watershed Plot in Watershed 6, transect 7, plot 54 - **WS060756** — Permanent Watershed Plot in Watershed 6, transect 7, plot 56 - **WS060758** — Permanent Watershed Plot in Watershed 6, transect 7, plot 58 - **WS060760** — Permanent Watershed Plot in Watershed 6, transect 7, plot 60 - **WS060965** — Permanent Watershed Plot in Watershed 6, transect 9, plot 65 - **WS060966** — Permanent Watershed Plot in Watershed 6, transect 9, plot 66 - **WS060967** — Permanent Watershed Plot in Watershed 6, transect 9, plot 67 - **WS060968** — Permanent Watershed Plot in Watershed 6, transect 9, plot 68 - **WS060969** — Permanent Watershed Plot in Watershed 6, transect 9, plot 69 - **WS070101** — Permanent Watershed Plot in Watershed 7, transect 1, plot 01 - **WS070103** — Permanent Watershed Plot in Watershed 7, transect 1, plot 03 - **WS070214** — Permanent Watershed Plot in Watershed 7, transect 2, plot 14 - **WS070318** — Permanent Watershed Plot in Watershed 7, transect 3, plot 18 - **WS070319** — Permanent Watershed Plot in Watershed 7, transect 3, plot 19 - **WS070320** — Permanent Watershed Plot in Watershed 7, transect 3, plot 20 - **WS070322** — Permanent Watershed Plot in Watershed 7, transect 3, plot 22 - **WS070324** — Permanent Watershed Plot in Watershed 7, transect 3, plot 24 - **WS070326** — Permanent Watershed Plot in Watershed 7, transect 3, plot 26 - **WS070539** — Permanent Watershed Plot in Watershed 7, transect 5, plot 39 - **WS070541** — Permanent Watershed Plot in Watershed 7, transect 5, plot 41 - **WS070543** — Permanent Watershed Plot in Watershed 7, transect 5, plot 43 - **WS070545** — Permanent Watershed Plot in Watershed 7, transect 5, plot 45 - **WS070547** — Permanent Watershed Plot in Watershed 7, transect 5, plot 47 - **WS070549** — Permanent Watershed Plot in Watershed 7, transect 5, plot 49 - **WS070759** — Permanent Watershed Plot in Watershed 7, transect 7, plot 59 - **WS070761** — Permanent Watershed Plot in Watershed 7, transect 7, plot 61 - **WS070763** — Permanent Watershed Plot in Watershed 7, transect 7, plot 63 - **WS070765** — Permanent Watershed Plot in Watershed 7, transect 7, plot 65 - **WS070866** — Permanent Watershed Plot in Watershed 7, transect 8, plot 66 - **WS070867** — Permanent Watershed Plot in Watershed 7, transect 8, plot 67 - **WS070868** — Permanent Watershed Plot in Watershed 7, transect 8, plot 68 - **WS070869** — Permanent Watershed Plot in Watershed 7, transect 8, plot 69 - **WS070870** — Permanent Watershed Plot in Watershed 7, transect 8, plot 70 - **WS080101** — Permanent Watershed Plot in Watershed 8, transect 1, plot 01 - **WS080202** — Permanent Watershed Plot in Watershed 8, transect 2, plot 02 - **WS080203** — Permanent Watershed Plot in Watershed 8, transect 2, plot 03 - **WS080204** — Permanent Watershed Plot in Watershed 8, transect 2, plot 04 - **WS080205** — Permanent Watershed Plot in Watershed 8, transect 2, plot 05 - **WS080206** — Permanent Watershed Plot in Watershed 8, transect 2, plot 06 - **WS080307** — Permanent Watershed Plot in Watershed 8, transect 3, plot 07 - **WS080308** — Permanent Watershed Plot in Watershed 8, transect 3, plot 08 - **WS080309** — Permanent Watershed Plot in Watershed 8, transect 3, plot 09 - **WS080310** — Permanent Watershed Plot in Watershed 8, transect 3, plot 10 - **WS080311** — Permanent Watershed Plot in Watershed 8, transect 3, plot 11 - **WS080312** — Permanent Watershed Plot in Watershed 8, transect 3, plot 12 - **WS080313** — Permanent Watershed Plot in Watershed 8, transect 3, plot 13 - **WS080314** — Permanent Watershed Plot in Watershed 8, transect 3, plot 14 - **WS080415** — Permanent Watershed Plot in Watershed 8, transect 4, plot 15 - **WS080416** — Permanent Watershed Plot in Watershed 8, transect 4, plot 16 - **WS080417** — Permanent Watershed Plot in Watershed 8, transect 4, plot 17 - **WS080418** — Permanent Watershed Plot in Watershed 8, transect 4, plot 18 - **WS080419** — Permanent Watershed Plot in Watershed 8, transect 4, plot 19 - **WS080420** — Permanent Watershed Plot in Watershed 8, transect 4, plot 20 - **WS080421** — Permanent Watershed Plot in Watershed 8, transect 4, plot 21 - **WS080422** — Permanent Watershed Plot in Watershed 8, transect 4, plot 22 - **WS090101** — Permanent Watershed Plot in Watershed 9, transect 1, plot 01 - **WS090102** — Permanent Watershed Plot in Watershed 9, transect 1, plot 02 - **WS090203** — Permanent Watershed Plot in Watershed 9, transect 2, plot 03 - **WS090204** — Permanent Watershed Plot in Watershed 9, transect 2, plot 04 - **WS090205** — Permanent Watershed Plot in Watershed 9, transect 2, plot 05 - **WS090306** — Permanent Watershed Plot in Watershed 9, transect 3, plot 06 - **WS090307** — Permanent Watershed Plot in Watershed 9, transect 3, plot 07 - **WS090308** — Permanent Watershed Plot in Watershed 9, transect 3, plot 08 - **WS090309** — Permanent Watershed Plot in Watershed 9, transect 3, plot 09 - **WS090410** — Permanent Watershed Plot in Watershed 9, transect 4, plot 10 - **WS090411** — Permanent Watershed Plot in Watershed 9, transect 4, plot 11 - **WS090412** — Permanent Watershed Plot in Watershed 9, transect 4, plot 12 - **WS090413** — Permanent Watershed Plot in Watershed 9, transect 4, plot 13 - **WS090514** — Permanent Watershed Plot in Watershed 9, transect 5, plot 14 - **WS090515** — Permanent Watershed Plot in Watershed 9, transect 5, plot 15 - **WS090516** — Permanent Watershed Plot in Watershed 9, transect 5, plot 16 - **YEAR** — numeric(1.000000), range 2002.0000 2003.0000, year (yyyy) Year of data collection - **FWD_TRANS** — numeric(1.000000), range 1.0000 4.0000, number Transect number (1 of 4) within plot where FWD was counted - **TR_LENGTH** — numeric(1.000000), range 4.0000 100.0000, meters Transect length - **TR_SLOPE** — numeric(1.000000), range 0.0000 100.0000, percent Slope of transect - **SZ_1_INT** — numeric(1.000000), range 0.0000 800.0000, number Number of intercepts in the 0.6 - 2.5 cm size class - **SZ_1_DQ2** — numeric(0.000010), range 0.0000 5.0000, square meters Quadratic mean piece diameter for the 0.6 - 2.5 cm size class - **SZ_1_A** — numeric(0.010000), range 0.0000 50.0000, number Average secant pieces along the transect (to correct bias) 0.6-2.5 size - **SZ_1_VOL** — numeric(0.000100), range 0.0000 50.0000, cubic meters per square meter Volume of size class 0.6 - 2.5 cm size class - **SZ_2_INT** — numeric(1.000000), range 0.0000 800.0000, number Number of intercepts in the 2.51 - 10.0 cm size class - **SZ_2_DQ2** — numeric(0.000010), range 0.0000 5.0000, square meters Quadratic mean piece diameter for the 2.51 - 10.0 cm size class - **SZ_2_A** — numeric(0.010000), range 0.0000 50.0000, number Average secant pieces along the transect (to correct bias) 2.51-10.0 size - **SZ_2_VOL** — numeric(0.000100), range 0.0000 50.0000, cubic meters per square meter Volume of size class 2.51-10.0 cm size class - **SLPCORR** — numeric(0.000100), range 0.0000 1.0000, number Slope correction (cos(atan(slope/100))) - **CORVOL1** — numeric(0.000100), range 0.0000 50.0000, cubic meters per square meter Slope corrected volume for 0.6-2.5 cm size class (sz_1_vol/slpcorr) - **CORVOL2** — numeric(0.000100), range 0.0000 50.0000, cubic meters per square meter Slope corrected volume for 2.51-10.0 cm size class (sz_2_vol/slpcorr) - **CORMASS1** — numeric(0.000100), range 0.0000 15.0000, megagrams per hectare Mass of size class 0.6-2.5 cm (corvol1*density) see format 2 - **CORMASS2** — numeric(0.000100), range 0.0000 41.0000, megagrams per hectare Mass of size class 2.51-10.0 cm (corvol2*density) see format 2 ## Entity 2: TD02402 ### Attribute list - **DBCODE** — varchar, enum FSDB Database code - **TD024** — FSDB database code TD024 - **ENTITY** — numeric(1.000000), range 2.0000 2.0000, number Entity number - **PSP_STUDYID** — varchar, enum Permanent Study Plots (PSP) study identification code - a mutually exclusive grouping of study forest stands - **HJWS** — Andrews Forest and vicinity Watershed Reference Stands - **STANDID** — varchar, enum Watershed identification code - **WS06** — Andrews Watershed 6 - **WS07** — Andrews Watershed 7 - **WS08** — Andrews Watershed 8 - **WS09** — Andrews Watershed 9 - **YEAR** — numeric(1.000000), range 1950.0000 2050.0000, year (yyyy) Year of data collection - **SAMPLE_NO** — varchar, freetext Sample number - **DIAMETER** — numeric(1.000000), range 0.1000 50.0000, centimeters Diameter of sample - **SZ_CLASS** — varchar, enum Size class of sample - **1** — 0.6-2.5 cm - **2** — 2.51-10.0 cm - **SAMPLE_LENGTH** — numeric(0.100000), range 0.1000 20.0000, centimeters Length of sample - **WET_WT** — numeric(0.010000), range 0.0100 200.0000, grams Wet weight of sample - **DRY_WT** — numeric(0.010000), range 0.0100 200.0000, grams Dry weight of sample - **SAMPLE_VOLUME** — numeric(0.000100), range 1.0000 10000.0000, cubic centimeters Volume of sample - **SAMPLE_DENSITY** — numeric(1.000000), range 0.0100 1.0000, grams per cubic centimeter Density of sample ## Attribute Definitions **CORMASS1** Mass of size class 0.6-2.5 cm (corvol1*density) see format 2 **CORMASS2** Mass of size class 2.51-10.0 cm (corvol2*density) see format 2 **CORVOL1** Slope corrected volume for 0.6-2.5 cm size class (sz_1_vol/slpcorr) **CORVOL2** Slope corrected volume for 2.51-10.0 cm size class (sz_2_vol/slpcorr) **DBCODE** FSDB Database code **DIAMETER** Diameter of sample **DRY_WT** Dry weight of sample **ENTITY** Entity number **FWD_TRANS** Transect number (1 of 4) within plot where FWD was counted **PLOTID** Plot identification number (standid+original plot number) **PSP_STUDYID** Permanent Study Plots (PSP) study identification code - a mutually exclusive grouping of study forest stands **SAMPLE_DENSITY** Density of sample **SAMPLE_LENGTH** Length of sample **SAMPLE_NO** Sample number **SAMPLE_VOLUME** Volume of sample **SLPCORR** Slope correction (cos(atan(slope/100))) **STANDID** Watershed identification code **SZ_1_A** Average secant pieces along the transect (to correct bias) 0.6-2.5 size **SZ_1_DQ2** Quadratic mean piece diameter for the 0.6 - 2.5 cm size class **SZ_1_INT** Number of intercepts in the 0.6 - 2.5 cm size class **SZ_1_VOL** Volume of size class 0.6 - 2.5 cm size class **SZ_2_A** Average secant pieces along the transect (to correct bias) 2.51-10.0 size **SZ_2_DQ2** Quadratic mean piece diameter for the 2.51 - 10.0 cm size class **SZ_2_INT** Number of intercepts in the 2.51 - 10.0 cm size class **SZ_2_VOL** Volume of size class 2.51-10.0 cm size class **SZ_CLASS** Size class of sample **TR_LENGTH** Transect length **TR_SLOPE** Slope of transect **WET_WT** Wet weight of sample **YEAR** Year of data collection ## Enumerated Domains ### DBCODE - **TD024** — FSDB database code TD024 ### PSP_STUDYID - **HJWS** — Andrews Forest and vicinity Watershed Reference Stands ### STANDID - **WS06** — Andrews Watershed 6 - **WS07** — Andrews Watershed 7 - **WS08** — Andrews Watershed 8 - **WS09** — Andrews Watershed 9 ### PLOTID - **WS060104** — Permanent Watershed Plot in Watershed 6, transect 1, plot 04 - **WS060106** — Permanent Watershed Plot in Watershed 6, transect 1, plot 06 - **WS060214** — Permanent Watershed Plot in Watershed 6, transect 2, plot 14 - **WS060318** — Permanent Watershed Plot in Watershed 6, transect 3, plot 18 - **WS060319** — Permanent Watershed Plot in Watershed 6, transect 3, plot 19 - **WS060321** — Permanent Watershed Plot in Watershed 6, transect 3, plot 21 - **WS060323** — Permanent Watershed Plot in Watershed 6, transect 3, plot 23 - **WS060325** — Permanent Watershed Plot in Watershed 6, transect 3, plot 25 - **WS060538** — Permanent Watershed Plot in Watershed 6, transect 5, plot 38 - **WS060539** — Permanent Watershed Plot in Watershed 6, transect 5, plot 39 - **WS060541** — Permanent Watershed Plot in Watershed 6, transect 5, plot 41 - **WS060543** — Permanent Watershed Plot in Watershed 6, transect 5, plot 43 - **WS060545** — Permanent Watershed Plot in Watershed 6, transect 5, plot 45 - **WS060754** — Permanent Watershed Plot in Watershed 6, transect 7, plot 54 - **WS060756** — Permanent Watershed Plot in Watershed 6, transect 7, plot 56 - **WS060758** — Permanent Watershed Plot in Watershed 6, transect 7, plot 58 - **WS060760** — Permanent Watershed Plot in Watershed 6, transect 7, plot 60 - **WS060965** — Permanent Watershed Plot in Watershed 6, transect 9, plot 65 - **WS060966** — Permanent Watershed Plot in Watershed 6, transect 9, plot 66 - **WS060967** — Permanent Watershed Plot in Watershed 6, transect 9, plot 67 - **WS060968** — Permanent Watershed Plot in Watershed 6, transect 9, plot 68 - **WS060969** — Permanent Watershed Plot in Watershed 6, transect 9, plot 69 - **WS070101** — Permanent Watershed Plot in Watershed 7, transect 1, plot 01 - **WS070103** — Permanent Watershed Plot in Watershed 7, transect 1, plot 03 - **WS070214** — Permanent Watershed Plot in Watershed 7, transect 2, plot 14 - **WS070318** — Permanent Watershed Plot in Watershed 7, transect 3, plot 18 - **WS070319** — Permanent Watershed Plot in Watershed 7, transect 3, plot 19 - **WS070320** — Permanent Watershed Plot in Watershed 7, transect 3, plot 20 - **WS070322** — Permanent Watershed Plot in Watershed 7, transect 3, plot 22 - **WS070324** — Permanent Watershed Plot in Watershed 7, transect 3, plot 24 - **WS070326** — Permanent Watershed Plot in Watershed 7, transect 3, plot 26 - **WS070539** — Permanent Watershed Plot in Watershed 7, transect 5, plot 39 - **WS070541** — Permanent Watershed Plot in Watershed 7, transect 5, plot 41 - **WS070543** — Permanent Watershed Plot in Watershed 7, transect 5, plot 43 - **WS070545** — Permanent Watershed Plot in Watershed 7, transect 5, plot 45 - **WS070547** — Permanent Watershed Plot in Watershed 7, transect 5, plot 47 - **WS070549** — Permanent Watershed Plot in Watershed 7, transect 5, plot 49 - **WS070759** — Permanent Watershed Plot in Watershed 7, transect 7, plot 59 - **WS070761** — Permanent Watershed Plot in Watershed 7, transect 7, plot 61 - **WS070763** — Permanent Watershed Plot in Watershed 7, transect 7, plot 63 - **WS070765** — Permanent Watershed Plot in Watershed 7, transect 7, plot 65 - **WS070866** — Permanent Watershed Plot in Watershed 7, transect 8, plot 66 - **WS070867** — Permanent Watershed Plot in Watershed 7, transect 8, plot 67 - **WS070868** — Permanent Watershed Plot in Watershed 7, transect 8, plot 68 - **WS070869** — Permanent Watershed Plot in Watershed 7, transect 8, plot 69 - **WS070870** — Permanent Watershed Plot in Watershed 7, transect 8, plot 70 - **WS080101** — Permanent Watershed Plot in Watershed 8, transect 1, plot 01 - **WS080202** — Permanent Watershed Plot in Watershed 8, transect 2, plot 02 - **WS080203** — Permanent Watershed Plot in Watershed 8, transect 2, plot 03 - **WS080204** — Permanent Watershed Plot in Watershed 8, transect 2, plot 04 - **WS080205** — Permanent Watershed Plot in Watershed 8, transect 2, plot 05 - **WS080206** — Permanent Watershed Plot in Watershed 8, transect 2, plot 06 - **WS080307** — Permanent Watershed Plot in Watershed 8, transect 3, plot 07 - **WS080308** — Permanent Watershed Plot in Watershed 8, transect 3, plot 08 - **WS080309** — Permanent Watershed Plot in Watershed 8, transect 3, plot 09 - **WS080310** — Permanent Watershed Plot in Watershed 8, transect 3, plot 10 - **WS080311** — Permanent Watershed Plot in Watershed 8, transect 3, plot 11 - **WS080312** — Permanent Watershed Plot in Watershed 8, transect 3, plot 12 - **WS080313** — Permanent Watershed Plot in Watershed 8, transect 3, plot 13 - **WS080314** — Permanent Watershed Plot in Watershed 8, transect 3, plot 14 - **WS080415** — Permanent Watershed Plot in Watershed 8, transect 4, plot 15 - **WS080416** — Permanent Watershed Plot in Watershed 8, transect 4, plot 16 - **WS080417** — Permanent Watershed Plot in Watershed 8, transect 4, plot 17 - **WS080418** — Permanent Watershed Plot in Watershed 8, transect 4, plot 18 - **WS080419** — Permanent Watershed Plot in Watershed 8, transect 4, plot 19 - **WS080420** — Permanent Watershed Plot in Watershed 8, transect 4, plot 20 - **WS080421** — Permanent Watershed Plot in Watershed 8, transect 4, plot 21 - **WS080422** — Permanent Watershed Plot in Watershed 8, transect 4, plot 22 - **WS090101** — Permanent Watershed Plot in Watershed 9, transect 1, plot 01 - **WS090102** — Permanent Watershed Plot in Watershed 9, transect 1, plot 02 - **WS090203** — Permanent Watershed Plot in Watershed 9, transect 2, plot 03 - **WS090204** — Permanent Watershed Plot in Watershed 9, transect 2, plot 04 - **WS090205** — Permanent Watershed Plot in Watershed 9, transect 2, plot 05 - **WS090306** — Permanent Watershed Plot in Watershed 9, transect 3, plot 06 - **WS090307** — Permanent Watershed Plot in Watershed 9, transect 3, plot 07 - **WS090308** — Permanent Watershed Plot in Watershed 9, transect 3, plot 08 - **WS090309** — Permanent Watershed Plot in Watershed 9, transect 3, plot 09 - **WS090410** — Permanent Watershed Plot in Watershed 9, transect 4, plot 10 - **WS090411** — Permanent Watershed Plot in Watershed 9, transect 4, plot 11 - **WS090412** — Permanent Watershed Plot in Watershed 9, transect 4, plot 12 - **WS090413** — Permanent Watershed Plot in Watershed 9, transect 4, plot 13 - **WS090514** — Permanent Watershed Plot in Watershed 9, transect 5, plot 14 - **WS090515** — Permanent Watershed Plot in Watershed 9, transect 5, plot 15 - **WS090516** — Permanent Watershed Plot in Watershed 9, transect 5, plot 16 ### SZ_CLASS - **1** — 0.6-2.5 cm - **2** — 2.51-10.0 cm