Welcome to the technical sessions schedule for the 2015 SEAFWA Annual Meeting.
NEW THIS YEAR! The technical schedule is capable of being sorted by date (i.e, Monday, Nov. 2), track (i.e. Wildlife Technical Sessions), or session (i.e. Wildlife Session #1). You can also search for a presentation title (i.e. Changing Landscapes by Coalition), key term (i.e. striped bass), or presenter last name (i.e. Weaver). The sort and search functions can be found on the navigation panel on the right side of this page. If you hover over the "Schedule" button, you’ll also see different schedule view options (i.e. Grid or Simple). Try selecting each of them to see which view you prefer.
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Kaylee M. Pollander, University of Georgia; Greg D. Balkcom, Georgia Wildlife Resources Division; Michael J. Chamberlain, University of Georgia
Mottled ducks (Anas fulvigula) inhabit various coastal marsh habitats, ranging from freshwater prairies to saline coastal marshes in the southeastern United States. The species is considered nonmigratory, but there is little information detailing individual movements within short or long temporal periods. Likewise, as residents mottled ducks are assumed to maintain home ranges, but band returns and coarse-scale telemetry data collected by previous studies suggests that movements away from maintained home ranges may occur. However, fine-scale data are also lacking in regards to the frequency and timing of movements outside of the home range. In August 2014, we captured and outfitted 9 mottled ducks (7 males and 2 females) with satellite GPS transmitters, which recorded 4 locations per day. Our objectives were to document daily distance traveled, document duration, timing, and distances traveled on excursions outside established home ranges, and document timing, duration, and distances traveled by mottled ducks to establish new home ranges. We determined distances between GPS locations using a Euclidean distance function. We found that average daily distances moved from capture through present varied from 72 m to 21,279 m (mean = 8,559 m, SE = 4,779 m). Three individuals left established home ranges and established new home ranges 46,232 m to 245,765 m (mean = 150,013 m SE = 83,518 m) away from their original home range. These new home ranges were established in ≤3 days. Four individuals made excursions outside their home range averaging 65,717 m (SE = 17,248 m); all returned to their previous home ranges in ≤4 days. These data suggest that mottled ducks in Georgia and South Carolina should be managed as one population rather than two separate populations.
