Factors Associated With Duck Nest Success In The Praire Pothole Region Of Canada
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Factors Associated With Duck Nest Success In The Prairie Pothole Region Of Canada
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Author :
language : en
Publisher:
Release Date : 1995
Factors Associated With Duck Nest Success In The Prairie Pothole Region Of Canada written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Ducks categories.
Factors Associated With Duck Nest Success In The Prairie Pothole Region Of Canada Journal Of Wildlife Management
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Author : Raymond J. Greenwood
language : en
Publisher:
Release Date : 1995
Factors Associated With Duck Nest Success In The Prairie Pothole Region Of Canada Journal Of Wildlife Management written by Raymond J. Greenwood and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Ducks categories.
Factors Associated With Duck Nest Success In The Prairie Pothole Region Of Canada
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Author :
language : en
Publisher:
Release Date : 1995
Factors Associated With Duck Nest Success In The Prairie Pothole Region Of Canada written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
Wildlife Monographs
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Author :
language : en
Publisher:
Release Date : 1995
Wildlife Monographs written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
Factors Associated With Duck Nest Success In The Praire Pothole Region Of Canada
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Author : Raymond J. Greenwood
language : en
Publisher:
Release Date : 1995
Factors Associated With Duck Nest Success In The Praire Pothole Region Of Canada written by Raymond J. Greenwood and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
Waterfowl Distribution And Productivity In The Prairie Pothole Region Of Canada
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Author : James H. Devries
language : en
Publisher:
Release Date : 2023
Waterfowl Distribution And Productivity In The Prairie Pothole Region Of Canada written by James H. Devries and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with Waterfowl categories.
Species conservation requires an understanding of the factors and interactions affecting species distribution and behavior, habitat availability and use, and corresponding vital rates at multiple temporal and spatial scales. Opportunities to investigate these relationships across broad geographic regions are rare. We combined long-term waterfowl population surveys, and studies of habitat use and breeding success, to develop models that identify and incorporate these interactions for upland-nesting waterfowl in the Prairie Pothole Region (PPR) of Canada. Specifically, we used data from the annual Waterfowl Breeding Population and Habitat Survey (1961-2009) at the survey segment level and associated habitat covariates to model and map the long-term average duck density across the Canadian PPR. We analyzed nest location and fate data from approximately 25,000 duck nests found during 3 multi-year nesting studies (1994-2011) to model factors associated with nest survival and habitat selection through the nesting season for the 5 most common upland nesting duck species: mallard (Anas platyrhynchos), gadwall (Mareca strepera), blue-winged teal (Spatula discors), northern shoveler (Spatula clypeata), and northern pintail (Anas acuta). Duck density was highly variable across the Canadian PPR, reflecting positive responses to local wetland area and count, and amounts of cropland and grassland, a regional positive response to latitude, and a negative response to local amounts of tree cover. Nest survival was affected by temporal and spatial variables at multiple scales. Specifically, nest survival demonstrated interactive effects among species, nest initiation date, and nesting cover type and was influenced by relative annual wetness, population density, and surrounding landscape composition at landscape scales, and broad geographic gradients (east-west and north-south). Likewise, species-specific probability of nest habitat selection was influenced by timing of nest initiation, population density, relative annual wetness, herbaceous cover, and tree cover in the surrounding landscape, and location within the Canadian PPR. We combined these models, with estimates of breeding effort (nesting, renesting, and nest attempts) from existing literature, in a stochastic conservation planning model that estimates nest distribution and success given spatiotemporal variation in duck density, habitat availability, and influential covariates. We demonstrate the use of this model by examining various conservation planning scenarios. These models allow estimation of local, landscape, and regional influence of conservation investments and other landscape changes on the productivity of breeding duck populations across the PPR of Canada. These models lay the groundwork for the incorporation of conservation delivery costs for full return-on-investment analyses and scenario analyses of climate, habitat, and land use change in regional and continental population models.
Sch Tzengesellschaft Gotha 1442 1942
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Author : Altschützengesellschaft 1442
language : en
Publisher:
Release Date : 1942
Sch Tzengesellschaft Gotha 1442 1942 written by Altschützengesellschaft 1442 and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1942 with categories.
Factors Affecting Duck Nesting In The Aspen Parklands
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Author : David William Howerter
language : en
Publisher:
Release Date : 2003
Factors Affecting Duck Nesting In The Aspen Parklands written by David William Howerter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Ducks categories.
Habitat fragmentation often has been cited as a cause for reduced reproductive success of grassland-nesting birds, including ducks, though results of many studies have been equivocal. As remotely sensed habitat data become increasingly available, an increased understanding of how habitat configurations affect demographic parameters will allow wildlife managers to make better decisions about habitat preservation and restoration. We used duck (Anas spp.) nesting data from 15 65-km2 study areas (n=6300 nests) dispersed throughout the aspen (Populus tremuloides) parklands of south-central Canada, to test hypotheses and build models that predict hatching rates and nest-site distributions in relation to landscape features. We constructed separate models using landscape features generated at 3 different spatial extents and using 3 different habitat classification schemes. Generalized linear mixed-modeling techniques were used to model hatching rates, and logistic regression was used to discr.
Evaluations Of Duck Habitat And Estimation Of Duck Population Sizes With A Remote Sensing Based System
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Author : Lewis M. Cowardin
language : en
Publisher:
Release Date : 1995
Evaluations Of Duck Habitat And Estimation Of Duck Population Sizes With A Remote Sensing Based System written by Lewis M. Cowardin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Bird populations categories.
Duck Nest Success In The Prairie Pothole Region
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Author : Albert T. Klett
language : en
Publisher:
Release Date : 1988
Duck Nest Success In The Prairie Pothole Region written by Albert T. Klett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Ducks categories.
The Northern Prairie Wildlife Research Center of the United States Geological Survey (USGS) presents the full text of an article entitled "Duck Nest Success in the Prairie Pothole Region," by Albert T. Klett, Terry L. Shaffer, and Douglas H. Johnson. The article discusses the nest success of mallard, gadwall, blue-winged teal, northern shoveler, and northern pintail for regions in North Dakota, South Dakota, and Minnesota between 1966 and 1984.