Michael Gangloff

Using Changes in Naive Occupancy to Detect Population Declines in Aquatic Species; Case Study: Stability of Greenhead Shiner in North Carolina

SEAFWA Journal Volume 3, March 2016

Determining population trends for many aquatic species is problematic for most resource agencies because little or no historical information is available on population size nor are resources available for contemporary population estimates. Managers often only have available to them presenceabsence data collected by qualitative surveys conducted at intermittent intervals. Changes in naïve occupancy can be used to detect population trends. Naïve occupancy is the ratio of number of sites where a species is detected to total number of sites surveyed, without correcting for imperfect detection...