Project Stream Vegetation Data

Abstract

Vegetation cover -

Vegetation cover data have been collected at Project Stream consistently each summer from 2014-2016. Data were collected using a quadrat system, as laid out on the attached diagram. The dataset includes cover class data, assigned using the Braun-Blanquet Cover Estimate Scale. For each quadrat, researchers estimated cover of features (grasses, forbs, ferns, shrubs, trees, rocks, bare soil, water, logs/stumps, lichens, and bryophytes) as well as cover of individual species of grass, forbs, ferns, shrubs, and trees. The data are organized in two formats. The “Vegetation Cover by Quadrat” tab treats each combination of year and quadrat as a line of data and records cover data for all species within the quadrat in that year. The “Vegetation data by Species” tab treats each combination of year and species as a line of data and indicates everywhere a particular species was found in a given year.

Vegetation species presence/absence -

Species presence/absence data have been collected at Project Stream consistently each summer from 2014-2016. Data were collected along transects that run through the quadrats referred to above and used for vegetation cover data. Each transect is further divided into sections that lie between each set of quadrats. For each of these sections, the dataset includes presence/absence data for grass, forb, fern, shrub, and tree species. The data are organized in two formats. The “Vegetation Transect Data” tab treats each combination of year and transect as a line of data and records presence/absence data for all species found along the transect in that year. The “Vegetation data by Species” tab treats each combination of year and species as a line of data and indicates everywhere a particular species was found in a given year.

Tree data -

Tree data have been collected at Project Stream consistently each summer from 2015-2016. Along transects, individual tree data were recorded, including transect location, species, height class, DBH, and stem count. The data are located in the “Tree Data” tab of the file.