The importance of nesting cavities and brood habitat to wood duck production / Joseph R. Robb.
Material type:
TextPublication details: OH : Ohio State University, 1986.Description: xii, 135 leaves : ill. , maps ; 28 cmOnline resources: Abstract: Natural cavity nesting, brood movements, and survivorship of wood ducks (Aix sponsa) were studied for 2 years (1984-85) at Muscatatuck National Wildlife Refuge in south-central Indiana. Study objectives were to (1)determine the availability and use of natural tree cavities for wood duck nesting; (2) determine the availability and use of brood habitat;and (3) calculate a fledging rate for wood duck broods on Muscatatuck,NWR. Suitable tree cavities for wood duck nesting were sampled via 381 0.5-ha plots poststratified into bottomland and upland categories.Examination of potential cavities showed that 15% (122) of apparent entrances (789) were suitable cavities, and the 3,127-ha refuge had 2,195 +- 537 (95%) CI) cavities suitable for wood duck nesting. Areas with mature or sawlog trees had 1.69 +- 0.22 (x +- SE) cavities per ha and all the forested area on the refuge contained 1.23 +- 0.16 (x +- SE)cavities per ha. American beech (Fagus grandifolia), red maple (Acer rubrum), and Ame
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Thesis(M.S.)--Ohio State University, 1986.
Includes bibliographical references (leaves 105-110).
Natural cavity nesting, brood movements, and survivorship of wood ducks (Aix sponsa) were studied for 2 years (1984-85) at Muscatatuck National Wildlife Refuge in south-central Indiana. Study objectives were to (1)determine the availability and use of natural tree cavities for wood duck nesting; (2) determine the availability and use of brood habitat;and (3) calculate a fledging rate for wood duck broods on Muscatatuck,NWR. Suitable tree cavities for wood duck nesting were sampled via 381 0.5-ha plots poststratified into bottomland and upland categories.Examination of potential cavities showed that 15% (122) of apparent entrances (789) were suitable cavities, and the 3,127-ha refuge had 2,195 +- 537 (95%) CI) cavities suitable for wood duck nesting. Areas with mature or sawlog trees had 1.69 +- 0.22 (x +- SE) cavities per ha and all the forested area on the refuge contained 1.23 +- 0.16 (x +- SE)cavities per ha. American beech (Fagus grandifolia), red maple (Acer rubrum), and Ame