Wetland use, settling patterns, and recruitment in mallards
Article Abstract:
Researchers investigated mallards' use of wetland areas in North Dakota and Minnesota over four years from 1987. The study was a response to data collected between 1955 and 1985 which demonstrated a weakening correlation between annual May ponds in this region and the following year's mallard breeding population. The results supported the hypothesis that pre-nesting and egg-producing females prefer temporary ponds, presumably for the easier availability of the macroinvertebrate food required by egg-producing females. They indicate that duck management efforts may best be concentrated in areas of plentiful seasonal ponds.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
Bird use and nesting in conventional, minimum-tillage, and organic cropland
Article Abstract:
Researchers investigated the numbers of birds and bird species in different types of fields in North Dakota. They studied bird use of fields on conventional farms, organic farms and farms employing medium-tillage, with the aim of establishing whether alternative farming systems would lead to an increase in bird populations due to the availability of more food and cover. The investigation revealed that the number of nesting species and the density of nests was higher in organic and medium-tillage fields than in conventionally-cropped fields, but hatching success was not significantly different.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
Relationships of habitat patch size to predator community and survival of duck nests
Article Abstract:
Duck nest success in relation to predator community was examined.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: A conserved system for dorsal-ventral patterning in insects and vertebrates involving sog and chordin. Nodal is a novel TGF-beta-like gene expressed in the mouse node during gastrulation
- Abstracts: Demand curves, deprivation and welfare: a reply to Dawkins. Multiple patterns of parental care. Parental effort and paternity
- Abstracts: Cannabinoids control spasticity and tremor in a multiple sclerosis model. A surprising simplicity to protein folding
- Abstracts: International recruitment highlights need to track scientific behavior. Cereal gene bank accepts need for patents...
- Abstracts: Spontaneous calcification of arteries and cartilage in mice lacking matrix GLA protein. Genetic ablation of parathyroid glands reveals another source of parathyroid hormone