# Litterfall rates in Reference Stand within the Andrews Experimental Forest, 1977-1985 ## Dataset - **Database Code:** TL001 - **Title:** Litterfall rates in Reference Stand within the Andrews Experimental Forest, 1977-1985 - **Abstract:** Seasonal and annual rates of litterfall have been sampled at 6 permanent plots picked to represent a range of habitats and elevations. To assess variation in litterfall and decomposition and its role in nutrient cycling across an environmental gradient of moisture and temperature. This study is to be incorporated with others in the western and northern US to study the relationship of climate and vegetation on litterfall rates and decomposition. - **Keywords:** primary productivity; leaf area; reference stands; permanent plots; litterfall; primary production; inorganic nutrients; organic matter; Long-Term Ecological Research (LTER); primary production; inorganic nutrients; organic matter - **Temporal coverage:** 1977-06-01 to 1985-01-11 - **Principal Investigator:** Mark E. Harmon ## Data Entities 1. TL00101 ## Entity 1: TL00101 ### Attribute list - **DATACODE** — varchar, freetext Data set code - **STAND** — varchar, enum Alpha code for reference stand - **RS01** — Reference Stand RS01, H.J. Andrews EF, Willamette NF - **RS02** — Reference Stand RS02, H.J. Andrews EF, Willamette NF - **RS03** — Reference Stand RS03, H.J. Andrews EF, Willamette NF - **RS04** — Reference Stand RS04, H.J. Andrews EF, Willamette NF - **RS07** — Reference Stand RS07, H.J. Andrews EF, Willamette NF - **RS13** — Reference Stand RS13, Wildcat Mtn RNA, Willamette NF - **RS14** — Reference Stand RS14, Wildcat Mtn RNA, Willamette NF - **RS26** — Reference Stand RS26, H.J. Andrews EF, Willamette NF - **MIRK** — Andrews Mirkwood site - **MW01** — Old Andrews Mirkwood site - **YEAR** — datetime, freetext Year of trap sample - **MONTH** — datetime, freetext Month of trap sample - **DAY** — datetime, freetext Day of trap sample - **TRAP** — numeric(1.000000), range 1.0000 7.0000, number Number of litterfall trap in the stand - **LCTWIGS** — numeric(0.010000), range 0.0000 100.0000, grams Live conifer twigs biomass - **LOTWIGS** — numeric(0.010000), range 0.0000 5.0000, grams Other live twig biomass leached of nutrients - **DCTWIGS** — numeric(0.010000), range 0.0000 250.0000, grams Dead conifer twig biomass - **DOTWIGS** — numeric(0.010000), range 0.0000 180.0000, grams Other dead twig biomass - **BARK** — numeric(0.010000), range 0.0000 180.0000, grams Bark biomass or on the forest floor - **NEEDLES** — numeric(0.010000), range 0.0000 100.0000, grams Attached conifer needles - **UNATTACH** — numeric(0.010000), range 0.0000 100.0000, grams Unattached conifer needle biomass - **ELEAVES** — numeric(0.010000), range 0.0000 10.0000, grams Evergreen hardwood leaf biomass - **DLEAVES** — numeric(0.010000), range 0.0000 50.0000, grams Deciduous hardwood leaf biomass - **CONES** — numeric(0.010000), range 0.0000 100.0000, grams Female cones and male parts biomass - **BGLICHN** — numeric(0.010000), range 0.0000 15.0000, grams Blue-green lichen biomass - **GRLICHN** — numeric(0.010000), range 0.0000 50.0000, grams Green lichen biomass - **MOSS** — numeric(0.010000), range 0.0000 5.0000, grams Moss biomass - **OTHER** — numeric(0.010000), range 0.0000 100.0000, grams Unattached needles and budscales - **CEDAR** — numeric(0.010000), range 0.0000 70.0000, grams Western red cedar parts biomass leached of nutrients ## Attribute Definitions **BARK** Bark biomass or on the forest floor **BGLICHN** Blue-green lichen biomass **CEDAR** Western red cedar parts biomass leached of nutrients **CONES** Female cones and male parts biomass **DATACODE** Data set code **DAY** Day of trap sample **DCTWIGS** Dead conifer twig biomass **DLEAVES** Deciduous hardwood leaf biomass **DOTWIGS** Other dead twig biomass **ELEAVES** Evergreen hardwood leaf biomass **GRLICHN** Green lichen biomass **LCTWIGS** Live conifer twigs biomass **LOTWIGS** Other live twig biomass leached of nutrients **MONTH** Month of trap sample **MOSS** Moss biomass **NEEDLES** Attached conifer needles **OTHER** Unattached needles and budscales **STAND** Alpha code for reference stand **TRAP** Number of litterfall trap in the stand **UNATTACH** Unattached conifer needle biomass **YEAR** Year of trap sample ## Enumerated Domains ### STAND - **RS01** — Reference Stand RS01, H.J. Andrews EF, Willamette NF - **RS02** — Reference Stand RS02, H.J. Andrews EF, Willamette NF - **RS03** — Reference Stand RS03, H.J. Andrews EF, Willamette NF - **RS04** — Reference Stand RS04, H.J. Andrews EF, Willamette NF - **RS07** — Reference Stand RS07, H.J. Andrews EF, Willamette NF - **RS13** — Reference Stand RS13, Wildcat Mtn RNA, Willamette NF - **RS14** — Reference Stand RS14, Wildcat Mtn RNA, Willamette NF - **RS26** — Reference Stand RS26, H.J. Andrews EF, Willamette NF - **MIRK** — Andrews Mirkwood site - **MW01** — Old Andrews Mirkwood site