Arctic LTER Terrestrial Database

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Plants

• Biomass/production/chemistry Plant biomass measurements near Toolik Lake, Alaska for moist tundra, wet sedge, tall shrub, and dry heath. Some harvests include total nitrogen and phosphorus.
• Plant communities and plant species list for area around Toolik Lake
• Plant phenological and growth data. Leaf growth and phenology data from experimental plots near Toolik Lake and the long term data set of flowering abundance and nutrient content of Eriophorum vaginatum. The flowering abundance data are from observations at 34 sites, spanning 5.5 degrees latitude and 1050 m elevation in northern and central Alaska; collected since 1979 and annually since 1989.

Soils

• del C-13 and Radiocarbon dates Percent moisture, percent organic carbon, bulk density, del C-13, del 15N, and radiocarbon content were determined at depth intervals in peat cores from the North Slope of Alaska
• Soil properties and chemical composition and extractable nutrients Extractable NH4-N and NO3-N (2 N KCl), PO4-P (0.025 N HCl) and pH (0.01 M CaCl2); Carbon, nitrogen and phosphorus content; Thaw depth
• Achieve of AL Johnson's photos and notes on frost boils from Cape Thomson, Alaska. 

Trace Gases Ecosystem respiration (ER: or CO2 flux), methane (CH4) fluxes and net ecosystem production (NEP) near Toolik Lake, Alaska, comparing effects of temperature, moisture and nutrients on tundra C balances.

Litter Decomposition Long-term Intersite Decomposition Experiment Team (LIDET)

Precipitation Chemistry Unfrozen wet only and bulk precipitation for the summer months at Toolik Lake.