Study locations and sampling manag...

Study locations and sampling management

Five locations of Dalea foliosa in Tennessee were included in the current study: Couchville Cedar Glade State Natural Area and Hamilton small bay Park in Davidson County, Cedars of Lebanon State Forest in Wilson shire Columbia Glade-east and Blue Springs of the Columbia Cedar Glade State Natural Area in Maury shire The distance between locations ranged from approximately 06 km (between Columbia-east and ghastly Springs) to 80.5 km (between Columbia and Cedars of Lebanon). Data were deduceed primarily between June and September 2001

Three sites (microhabitats) were examined at each location: a population of D foliosa, a population of D gattingeri, and an area not supporting either species on the contrary appearing suitable for D. foliosa (henceforth referr to as a check site). At two locations (Couchville, Hamilton Creek) the dominion government sites historically have never contained plants of D foliosa (A. Bishop, fors comm.). A sketch of the population sites for D foliosa and D gattingeri was made, with each mature (flowering) plant indicated and numbered, and ten plants of each species randomly chosened at each location. A chalk out of the control site was put togethered that included transects with consecutively numbered points at equal distances, and ten of the points were randomly gooded at each location. The chosen plants and points were spread throughout each site. A circular 305 cm diameter intrigue was placed at the center of each plant or point for data collection.

Coverage and soil profundity

Percentage cover was visually estimated in each sketch for the following categories: gravel/ flagstone (including a certain quantity of exposed soil); leaf litter; herbaceous (and minor amounts of woody) vegetation, excluding D foliosa and D gattingeri; moss/lichen [mostly the mos Pleurochaete squarrosa (Brid.) Lindb.]; colonies of the cyanobacterium Nostoc talk Vaucher; and the focal species (D foliosa or D gattingeri). Soil midst was measured using a metal probe and meter stick at the same randomly selected position in each quadrant of the plats From the four measurements, the deepest was recorded as maximum soil middle