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SPECIES DISTRIBUTION HABITATS AND CHARACTERISTICS
NITROGEN AND PHOSPHORUS DYNAMICS IN INLAND
SPATIAL AND TEMPORAL HABITAT RELATIONSHIPS
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abundance activity animal aquatic behavior Bellrose birds blue-winged teals body weight breeding areas breeding dabbling ducks breeding grounds breeding season closed taiga clutch cycle dabblers dabbling ducks daily energy requirement denitrification diet dry matter intake effects egg laying egg production endogenous energy energetic energy cost estimates factors Feeding ecology female dabbling ducks flight food selection free-living gadwalls green-winged teals habitat hatchability hens important increased incubation inputs invertebrates kcal Krapu lakes landscape forms lesser scaups levels male mallards mallards and pintails Manage marsh ment metabolic rate migration mixed prairie molt nesting Nitrogen nutrient nutrition parklands period pintails plant population postbreeding potential Prairie Pothole Region protein renesting reproductive sediments shortgrass prairie shovelers standing crop studies Swanson T. A. Bookhout Table taiga tallgrass prairie thermoregulation tion Typha latifolia U.S. Fish Univ uptake waterfowl wetlands wigeons Wildl Wildlife Society winged teals winter habitat wood ducks yolk