Field data for the Vegetation Mapping Inventory Project of Devils Tower National Monument
1996-1998. Field data for the Vegetation Mapping Inventory Project of Devils Tower National Monument
This reference is an assemblage of field data collected as part the baseline vegetation inventory for the park unit. Typical files here are vegetation plot data, accuracy assessment data, field photos, PDF showing locations of vegetation plots and accuracy assessment data, and other data for this type. Twenty-eight plots were collected in late July and August of 1996. The field team attempted to place plots in each of the vegetation types on the preliminary list that they could find. In addition, vegetation types that were encountered in the field which appeared distinct from any on the preliminary list were sampled. Plots were subjectively placed, generally in vegetation that was representative of an area of relatively homogeneous vegetation which covered more than 1/2 ha (the minimum mapping unit). Thus, ecotones and small patches were avoided. However, in cases where several vegetation types regularly occurred in mosaics of small stands, it was necessary to use multiple plots and sample smaller patches. The final vegetation classification and descriptions were produced using plots, observation points, and the experience of the field team. Field personnel organized the plots and observation points into groups based on vegetation structure and composition. The number of plots ranged from 0-6 per type and the average number of observation points ranged from 0-6 per type. The two sparsely vegetated communities were not sampled with either plots or observation points because they were easily distinguished from surrounding vegetation types and adequate descriptions existed. Quantitative analyses were also completed to compare to the subjective classification. Average cover of each species and vegetation stratum were computed. Only the plots were used for quantitative analysis because of the more detailed information collected for them.
- Type
- Assemblage
- Units
- DETO , NGPN , VMI
- Keywords
- Accuracy Assessment, botanical survey, Classification, Geodatabase, Habitat Types, Imagery, National Vegetation Classification, NVC, NVCS, Plots, Releve, Relevé, Remote Sensing, USNVCS, Vegetation, Vegetation Inventory, Vegetation Map, Vegetation Mapping