Literaturdatenbank
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Harrel, B. J., Allen, C. M., & Hebert, S. J. (1996). Movements and habitat use of subadult alligator snapping turtles (macroclemys temminckii) in louisiana. American Midland Naturalist, 135(1), 60–67.
Added by: Sarina Wunderlich (06 Jul 2014 16:11:38 UTC) |
| Resource type: Journal Article BibTeX citation key: Harrel1996 View all bibliographic details  |
Categories: General Keywords: Habitat - habitat, Nordamerika - North America, Schildkröten - turtles + tortoises Creators: Allen, Harrel, Hebert Collection: American Midland Naturalist |
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| Abstract |
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We conducted a telemetry study of subadult alligator snapping turtles (Macroclemys temminckii) to investigate movement and habitat use. Available habitat consisted of baldcypress forest (Taxodium distichum) (69.1%) and open channel (30.9%). Twelve (three male, nine female) turtles from Bayou Desiard in northeast Louisiana were each equipped with an ATS external radio transmitter and returned to the capture location within 2 h. A total of 1327 location fixes were recorded from March 1992 to June 1993. At each fix location the date, time, water temperature and depth, direction from last fix and capture site, and nearest shoreline, and habitat were recorded. Significant differences were noted between male and female mean fix distance (males = 352.2 m, females = 160.3 m), mean percentage of movement fixes (males = 62.7%, females = 42.7%) and mean home range length (males = 3495.1 m, females = 1423.2 m). The percentage of movement fixes and fix distance was highly correlated with water temperature but not with the size of the turtle. Turtles preferred the baldcypress forest to open channel. Males and females had significant differences in microhabitat use; 56.1% of male fixes were associated with structures (e.g., logs) compared to 79.7% for females. Turtles returned to specific microsites and there were no overland movements. Subadult and adult alligator snapping turtles in Bayou Desiard have similar movement patterns and habitat use.
Added by: Sarina Wunderlich |