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Bat Occupancy Probabilities

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This Demonstration shows the predicted probability of the presence of bats by low-frequency (less than 35 kHz) bat calls at Dillon Wind Energy Facility, Riverside County, California, USA. The probability ( axis) is a function of night within the time period (February 16, 2008 to May 17, 2008; axis) as well as meteorologic variables. You can observe the impact on presence probability as a function of wind speed (m/s), wind direction (degrees, 270° is west), temperature (° C), and moon phase (as a proportion).

Contributed by: Theodore J. Weller and James A. Baldwin (March 2011)
Open content licensed under CC BY-NC-SA

Snapshots

Details

Snapshot 1: evaluated at mean meteorologic values for time period

Snapshot 2: lowest temperature and lowest wind speed for time period

Snapshot 3: mean meteorologic values for time period, but full moon

From a manuscript in review: T. J. Weller and J. A. Baldwin, Using Echolocation Monitoring to Model Bat Occupancy and Inform Mitigations at Wind Energy Facilities. For more information, contact tweller@fs.fed.us.

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