Banff Springs snail (Physella johnsoni) COSEWIC assessment and status report: chapter 4

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Lists of Figures and Tables

List of Figures

• Figure 1: Line drawing and photograph of Physella johnsoni, the Banff Springs Snail
• Figure 2: Photograph of penial morphology of Physella johnsoni, the Banff Springs Snail, collected from Lower Middle Spring, Banff National Park
• Figure 3: UPGMA of Nei’s unbiased genetic distances among three species of physid snails from Banff National Park, as shown by allozyme analyses
• Figure 4: Global distribution of the Banff Springs Snail, Physella johnsoni
• Figure 5: Historic distribution of Physella johnsoni, the Banff Springs Snail, in thermal springs near the Town of Banff, Banff National Park, Alberta
• Figure 6: Water physicochemistry in the origins of the thermal springs historically inhabited by Physella johnsoni
• Figure 7: Water temperature at Kidney Spring origin measured hourly by automatic temperature loggers and during snail surveys
• Figure 8: Water physicochemistry of Kidney Spring origin measured with a hand-held multimeter and portable spectrophotometer (sulphide)
• Figure 9: Microdistribution of Physella johnsoni at the Upper C&B Spring, 1996 through 2001
• Figure 10: Timing and duration of thermal spring flow stoppages, 1 January 1996 through 31 December 2006, Banff National Park
• Figure 11: Number of Physella johnsoni in each thermal spring and all seven springs combined, January 1996 through May 2007
• Figure 12: Yearly population minima, maxima, and mean for each subpopulation (except Upper Middle and Kidney), for all five original subpopulations combined, and for all subpopulations including the re-introduced subpopulations at Upper Middle and Kidney

List of Tables

• Table 1: Area of occupancy and summary of Banff Springs Snail subpopulations, January 1996 through May 2007
• Table 2: Threats to the Banff Springs Snail and its habitat at each thermal spring in Banff National Park