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The variety of social systems among the New World blackbirds (Family Icteridae) and the structural simplicity of their foraging environment provide excellent opportunities for testing theorics about the adaptive significance of their behavior. Here Gordon Orians presents the results of his many years of research on how blackbirds utilize their marsh environments during the breeding season. These results stem from information he gathered on three species during ten breeding seasons in the Pacific Northwest, on Red-winged blackbirds during two breeding seasons in Costa Rica, and on three species during one breeding season in Argentina. The author uses models derived from Darwin's theory of natural selection to predict the behavior and morphology of individuals as well as the statistical properties of their populations. First he tests models that predict habitat selection, foraging behavior, territoriality, and mate selection. Then he considers some population patterns, especially range of use of environmental resources and overlap among species, that may result from those individual attributes. Professor Orianns concludes with an overview of the structure of bird communities in marshes of the world and the relation of these patterns to overall source availability in these simple but productive habitats.

Animal ethology and ecology. Sociobiology --- Birds --- Adaptation (Biology). --- Blackbirds --- Marsh ecology. --- Resource partitioning (Ecology). --- Behavior. --- Marsh ecology --- Adaptation (Biology) --- Resource partitioning (Ecology) --- Adaptation (Biologie) --- Partage des ressources (Ecologie) --- Behavior

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Source-sink theories provide a simple yet powerful framework for understanding how the patterns, processes and dynamics of ecological systems vary and interact over space and time. Integrating multiple research fields, including population biology and landscape ecology, this book presents the latest advances in source-sink theories, methods and applications in the conservation and management of natural resources and biodiversity. The interdisciplinary team of authors uses detailed case studies, innovative field experiments and modeling, and comprehensive syntheses to incorporate source-sink ideas into research and management, and explores how sustainability can be achieved in today's increasingly fragile human-dominated ecosystems. Providing a comprehensive picture of source-sink research as well as tangible applications to real world conservation issues, this book is ideal for graduate students, researchers, natural-resource managers and policy makers.

ecology --- Landscape conservation --- Natural resources management --- Source sink relations --- Biodiversity --- comminution --- Sustainable development --- Animal populations --- Habitat selection. --- Animals --- Ecological heterogeneity. --- Ecosystem management. --- Research. --- Dispersal. --- Biotic communities --- Ecosystems management --- Applied ecology --- Environmental management --- Nature conservation --- Biodiversity conservation --- Heterogeneity, Ecological --- Ecology --- Fragmented landscapes --- Animal dispersal --- Dispersal of animals --- Selection of habitat --- Animal ecology --- Habitat (Ecology) --- Resource partitioning (Ecology) --- Demography, Wildlife --- Populations, Animal --- Wildlife demography --- Wildlife populations --- Population biology --- Management --- Habitat selection

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

The variety of social systems among the New World blackbirds (Family Icteridae) and the structural simplicity of their foraging environment provide excellent opportunities for testing theorics about the adaptive significance of their behavior. Here Gordon Orians presents the results of his many years of research on how blackbirds utilize their marsh environments during the breeding season. These results stem from information he gathered on three species during ten breeding seasons in the Pacific Northwest, on Red-winged blackbirds during two breeding seasons in Costa Rica, and on three species during one breeding season in Argentina. The author uses models derived from Darwin's theory of natural selection to predict the behavior and morphology of individuals as well as the statistical properties of their populations. First he tests models that predict habitat selection, foraging behavior, territoriality, and mate selection. Then he considers some population patterns, especially range of use of environmental resources and overlap among species, that may result from those individual attributes. Professor Orianns concludes with an overview of the structure of bird communities in marshes of the world and the relation of these patterns to overall source availability in these simple but productive habitats.

Blackbirds --- Marsh ecology. --- Adaptation (Biology) --- Resource partitioning (Ecology) --- Birds --- Behavior. --- Behavior. --- Amblyramphus holosenceus. --- Board, V. V. --- Brown-and-Yellow Marshbird. --- Case, N. A. --- Corbet, P. S. --- Donacospiza albifrom. --- Furrer, R. K. --- Goddard, S. V. --- Hewitt, O. H. --- Holm, C. H. --- Horn, H. S. --- Icteridae. --- Kormondy, E. ]. --- Lack, D. --- Limnornis curvirostris. --- Meanley, B. --- Miller, R. S. --- NeflJ. A. --- Orians, G. H. --- Pearson, N. E. --- Searcy, W. A. --- Tachuns rubngastra. --- Warbling Doradito. --- Willson, M. F. --- Yellow-winged Blackbird. --- carp. --- central place foraging. --- conductivity, lake. --- eggs, first date of laying. --- gaping. --- parental investment. --- polygyny.