. Southwest Montana wetland assessment : developing a statewide assessment and monitoring strategy for Montana. Wetlands; Wetland ecology; Wetland management. hours per site. The method has been in use by the North Carolina Vegetation Survey for over 10 years (Peet et al. 1998) and has been used to successfully develop a vegetation index of biotic integrity (VIBI) in Ohio (Mack 2004) and Colorado (Rocchio 2006; Rocchio 2007; Lemly and Rocchio 2009). The structure of the plot consists of 10 10 m x 10 m (100 m2) modules typically arranged in a 2 m x 5 m array (Figure 8). The plot was subjectivel
. Southwest Montana wetland assessment : developing a statewide assessment and monitoring strategy for Montana. Wetlands; Wetland ecology; Wetland management. hours per site. The method has been in use by the North Carolina Vegetation Survey for over 10 years (Peet et al. 1998) and has been used to successfully develop a vegetation index of biotic integrity (VIBI) in Ohio (Mack 2004) and Colorado (Rocchio 2006; Rocchio 2007; Lemly and Rocchio 2009). The structure of the plot consists of 10 10 m x 10 m (100 m2) modules typically arranged in a 2 m x 5 m array (Figure 8). The plot was subjectively placed within the AA to maximize abiotic/biotic heterogeneity. Capturing heterogeneity within the plot ensures adequate representation of local variations produced by hummocks, water tracks, side-channels, pools, wetland edge, microtopography, etc. The following guidelines were used to determine plot locations within the AA: • The plot was located in a representative area of the AA that incorporates as much microtopographic variation as possible. • If the AA was homogeneous and there was no direction or orientation evident in the vegetation, the plot was laid out to run either N-S or E-W using the second hand on a watch to randomly determine direction (00-29 sec = N-S orientation; 30-59 sec = E-W orientation). • If the AA was not homogeneous, was oddly shaped, or was directional (, followed a stream), the plot was oriented to adequately represent all wetland features. • If the wetland had an irregular shape and the 20 m x 50 m plot did not "fit" within the AA, the 2 m x 5 m array of modules was restructured to accommodate the shape of the AA. For example, a 1 m x 5 m array of 100 m2 modules was used for narrow, linear areas and a 2 m x 2 m array of 100 m2 modules was used for small, circular sites. • The plot captured the range of diversity within the AA, without crossing over into the upland. No more than 20% of the plot was located in upland areas be
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