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percent_plant_cover_by_functional_type.xls
These data show the aerial percent cover of plant species grouped by functional type in the ITEX circumarctic flux plots. The plots were located at the Toolik Lake LTER fertilization experiment site and Imnavait Creek in Alaska, USA; at STEPPS, Paddus, and Latnjajaure near Abisko in northern Sweden; and at various sites in Adventdalen, Svalbard, Norway. Measurements were made during the growing seasons of 2003 through 2005.
| Variable | Description |
| YEAR | Year of measurement |
| DATE | Date of data collection |
| SITE | Abisko, Toolik, or Svalbard |
| GROUP | STEPPS, Latnjajaure, or Paddus (Abisko, Sweden); Imnavait or Toolik Lake (Alaska, USA); airport, babbling brook, Bjorndalen, Callaghan, fragile site, happy valley, ocean view, river bed, Svalsat, or salt marsh (Svalbard, Norway) |
| PLOT | Individual plot identifier |
| TREAT | Control or fertilized annually (with N and P) |
| PHASE | Measurement series (round of measurements within each year) |
| B | Bryophytes (% cover) |
| D | Deciduous (% cover) |
| E | Evergreen (% cover) |
| F | Forbs (% cover) |
| G | Grasses (% cover) |
| L | Lichens (% cover) |
| P | Pteridophytes (% cover) |
| R | Rocks (% cover) |
| S | Sedges (% cover) |
| GRM | Mixed graminoids (% cover) |
| W | Standing water (% cover) |
| X | Unclassified (% cover) |
| TotVasc | Total vascular (% cover) |
| Vasc%Decid | Total vascular cover which is deciduos (% cover) |
| Vasc%Ever | Total vascular cover which is evergreen (% cover) |
| Vasc%Forb | Total vascular cover which is forb (% cover) |
| Vasc%Grass | Total vascular cover which is grass (% cover) |
| Vasc%Pterid | Total vascular cover which is pteridopyte (% cover) |
| Vasc%Sedge | Total vascular cover which is sedge (% cover) |
| Vasc%gram | Total vascular cover which is graminoid (% cover) |
