Response of nesting Canada geese (Branta canadensis) to islands in stockdams in northcentral Montana / John J. McCarthy
Material type:
TextPublication details: Bozeman, MT : Montana State University, 1973.Description: vii, 36 leaves : ill. ; 28 cmOnline resources: Abstract: The use of islands in stockdams by nesting Canada geese was studied from 1971-1972 in northcentral Montana. Physical characteristics of reservoirs and islands and the effects of fishing and rest rotation were evaluated in relationship to nesting and brood rearing. The greater use of reservoirs of 2 acres or more with islands by nesting geese was found to differ significantly from those without islands. Use of islands increased with off-shore distance and those islands of 0.05 of an acre or greater received more consistent use than smaller islands. Activities of fishermen were found to be incompatible with nesting and brood rearing. Recommendations were made for the evaluation of reservoirs being considered for island placement and construction of islands.Estimates of total duck production for the area were also presented and showed American widgeons, mallards and pintails produced 75% of the young over the two years.
| Item type | Current library | Collection | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|---|
Electronic Report
|
Electronic Library | Non-fiction | McC (Browse shelf(Opens below)) | Available | 1532 |
Browsing Electronic Library shelves Close shelf browser (Hides shelf browser)
Thesis(M.S)--Montana State University-Bozeman, 1973.
Includes bibliographical references (leaves 35-36).
The use of islands in stockdams by nesting Canada geese was studied from 1971-1972 in northcentral Montana. Physical characteristics of reservoirs and islands and the effects of fishing and rest rotation were evaluated in relationship to nesting and brood rearing. The greater use of reservoirs of 2 acres or more with islands by nesting geese was found to differ significantly from those without islands. Use of islands increased with off-shore distance and those islands of 0.05 of an acre or greater received more consistent use than smaller islands. Activities of fishermen were found to be incompatible with nesting and brood rearing. Recommendations were made for the evaluation of reservoirs being considered for island placement and construction of islands.Estimates of total duck production for the area were also presented and showed American widgeons, mallards and pintails produced 75% of the young over the two years.