Progress report to Ducks Unlimited Canada / P. Godin.
Material type:
TextPublication details: 1977-78. Guelph, ON : University of Guelph,Description: 2 v. (various pagings) ; 28 cmOnline resources: Abstract: This progess report summarizes trends in data that have been processed and analysed to date. Summary of trends: 1. Fewer mallards were present on the study area in 1978 than in 1977. The data show that some ponds received higher and more consistent use by mallards than others. 2..Some ponds provided inadequate inverebrate densities to support laying hens or broods while others, possessing large invertebrate numbers, were used consistently as feeding areas by the birds. 3. Initial regression analyses indicate that invertebrate numbers were influenced by the accumulated mean frequencies of all plant species in a pond (p < 0.05),pH (P < 0.05), and specific conductance (P < 0.10). 4. Invertebrate diversity was significantly dependent upon the accumulated mean frequencies of all aquatic plant species (P < 0.10), total mean frequency of all species of Lemnaceae (P < 0.05), and specific conductance (P , 0.10). 5. Within the feeding zone used by mallards (water depth < 43 cm), ponds varied
| Item type | Current library | Collection | Call number | Status | Notes | Date due | Barcode |
|---|---|---|---|---|---|---|---|
Electronic Report
|
Electronic Library | Non-fiction | GOD (Browse shelf(Opens below)) | Available | 1977 Progress Report | 15534 | |
|
Electronic Report
|
Electronic Library | Non-fiction | GOD (Browse shelf(Opens below)) | Available | 1978 Progress Report | 1011 |
Includes bibliographical references.
This progess report summarizes trends in data that have been processed and analysed to date. Summary of trends: 1. Fewer mallards were present on the study area in 1978 than in 1977. The data show that some ponds received higher and more consistent use by mallards than others. 2..Some ponds provided inadequate inverebrate densities to support laying hens or broods while others, possessing large invertebrate numbers, were used consistently as feeding areas by the birds. 3. Initial regression analyses indicate that invertebrate numbers were influenced by the accumulated mean frequencies of all plant species in a pond (p < 0.05),pH (P < 0.05), and specific conductance (P < 0.10). 4. Invertebrate diversity was significantly dependent upon the accumulated mean frequencies of all aquatic plant species (P < 0.10), total mean frequency of all species of Lemnaceae (P < 0.05), and specific conductance (P , 0.10). 5. Within the feeding zone used by mallards (water depth < 43 cm), ponds varied