Download or read book The Impact of Climate Change on the Winter Range of the Slate colored Junco Junco Hyemalis Hyemalis written by Andrew Strassman and published by . This book was released on 2005 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Snowbird written by Ellen D. Ketterson and published by University of Chicago Press. This book was released on 2016-03-30 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: At birdfeeders and in backyards across North America, the dark-eyed junco, or snowbird, can be found foraging for its next meal. With an estimated population of at least 630 million, juncos inhabit forests, parks, and even suburban habitats, making them one of the continent’s most abundant and easily observable songbirds. But while common and widespread, juncos also exhibit extraordinary diversity in color, shape, size, and behavior across their range, making them ideal study subjects for biologists interested in ecology and evolutionary diversification. Intended for scholars, citizen scientists, and amateur ornithologists, alike, Snowbird synthesizes decades of research from the diverse and talented researchers who study the Junco genus. Though contributors approach their subject from a variety of perspectives, they share a common goal: elucidating the organismal and evolutionary processes by which animals adapt and diversify in response to environmental change. Placing special emphasis on the important role that underlying physiological, hormonal, and behavioral mechanisms play in these processes, Snowbird not only provides a definitive exploration of the junco’s evolutionary history and behavioral and physiological diversity but also underscores the junco’s continued importance as a model organism in a time of rapid global climate change. By merging often disparate biological fields, Snowbird offers biologists across disciplines an integrative framework for further research into adaptation, population divergence, and the formation of new species.
Download or read book Variation in Carcass Fatty Acids of the Slate colored Junco Junco Hyemalis During Winter and Migration written by Edward Birch Bower and published by . This book was released on 1966 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Quantitative Study of Seasonal Weight and Fat Variationals in the Slate colored Junco Junco Hyemalis written by William Henry Aussiker and published by . This book was released on 1964 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Birds in Winter written by Roger F. Pasquier and published by Princeton University Press. This book was released on 2019-08-13 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pasquier describes the season's distinct conservation challenges for birds that winter where they have bred and for migrants to distant regions. Filled with elegant line drawings, the text describes how winter influences the lives of birds from the poles to the equator.
Download or read book An Urban Invasion by Dark eyed Juncos Junco Hyemalis written by Caylor Austin Rasner and published by . This book was released on 2001 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Urban Ecology written by Philip James and published by Routledge. This book was released on 2014-10-30 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: Urban Ecology: An Introduction seeks to open the reader’s mind and eyes to the way in which nature permeates everyday urban living, and how it has to be understood, cared for, and managed in order to make our towns and cities healthier places to visit and in which to live and work. The authors examine how nature can improve our physical and mental health, the air we breathe and the waters we use, as well as boosting our enjoyment of parks and gardens. Urban Ecology sets out the science that underlies the changing natural scene and the tools used to ensure that cities become both capable of adapting to climate change and more beautiful and resilient. The book begins with a discussion of the nature of urban places and the role of nature in towns and cities. Part 1 looks at the context and content of urban ecology, its relationship to other foci of interest within ecology and other environmental sciences, and the character of city landscapes and ecosystems. In Part 2 the authors set out the physical and chemical components of urban ecosystems and ecological processes, including urban weather and climate, urban geomorphology and soils, urban hydrology and urban biogeochemical cycles. In Part 3 urban habitats, urban flora and fauna, and the effects of, deliberate and inadvertent human action on urban biota are examined. Part 4 contains an exploration of the identification and assessment of ecosystem services in urban areas, emphasising economic evaluation, the importance of urban nature for human health and well-being, and restoration ecology and creative conservation. Finally, in Part 5 the tasks for urban ecologists in optimising and sustaining urban ecosystems, providing for nature in cities, adapting to climate change and in developing the urban future in a more sustainable manner are set out. Within the 16 chapters of the book – in which examples from around the world are drawn upon - the authors explore current practice and future alternatives, set out procedures for ecological assessment and evaluation, suggest student activities and discussion topics, provide recommended reading and an extensive bibliography. The book contains more than 150 tables and over 150 photographs and diagrams.
Download or read book Our Living Resources written by and published by . This book was released on 1995 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report provides information on distribution, abundance, and health of birds, mammals, reptiles and amphibians, fishes, invertebrates, plants, terrestrial ecosystems, aquatic ecosystems, coastal and marine ecosystems, riparian ecosystems, the Great Plains, Interior West, Alaska, and Hawaii. It also discusses special issues: global climate change, human influences, non-native species, and habitat assessments.
Download or read book No Evidence that Novel Resource Availability Drives Bill Shape Divergence in Urban Dark eyed Juncos Junco Hyemalis written by Sara Elizabeth Freimuth and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Urbanization is rapidly changing landscapes worldwide, driving phenotypic divergence in numerous urban wildlife populations. However, the strength and direction of this divergence may vary across and within cities. Here, we investigated the influence of fine-scale environmental variation on the morphological divergence of dark-eyed juncos (Junco hyemalis) across three Southern California cities. We explored how bill shape varies across three urban populations and one non-urban population, and we tested whether bill shape varies with fine-scale changes in resource availability across urban Los Angeles. Bill shape differed between urban and non-urban populations, but we did not observe expected patterns of bill shape divergence across cities. Bill shape variation also was not associated with fine-scale variation in resource availability within urban Los Angeles. Our findings suggest urban junco bill shape may be driven by non-adaptive processes, other environmental factors, or a more complex suite of urban selection pressures.
Download or read book Winter Activities of the Slate colored Junco on the Ross Natural History Reservation written by Charles William Comer and published by . This book was released on 1969 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dark eyed Junco written by Matthew Mulanax and published by . This book was released on 2007 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Habitat Preference of the Dark eyed Junco Junco Hyemalis written by Edgar Parsons Roberts and published by . This book was released on 1979 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dark eyed Junco Junco Hyemalis written by Terry A. Messmer and published by . This book was released on 1995* with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimal Foraging and the Dark eyed Junco written by Michael G. Dryfoos and published by . This book was released on 1981 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Life History of the Carolina Junco Junco Hyemalis Carolinensis Brewster written by David Ralph Hostetter and published by . This book was released on 1938 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Life History of the Carolina Junco written by D. Ralph Hostetter and published by . This book was released on 1961 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Examining the Influence of Winter Climate Change Across Species and Scales written by Anna Osvaldsson Garfield and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change will have disproportionate effects across species, as responses to abiotic drivers vary. The effects of changing winter climate are overlooked, especially in temperate regions. I used long-term observational data and a common garden experiment to understand plant responses to changing winter.First, I examined the relationship between winter and summer climate and annual relative growth rates over two decades for seven tree species. I found that winter variables were more important than summer variables for five species. Further, the presence or absence of snow affected growth for two species. However, trends in species’ growth rates over time were mostly inconsistent with model predictions. Second, I investigated the effects of snow on growth, survival, and fecundity for twenty herbaceous plant species. Snow removal resulted in more freeze-thaw events in the soil. Responses to snow cover were species specific. However, we found that species with early phenologies were more likely to suffer over winter mortality when snowpack was reduced at the end of the season only. High mortality rates across species and treatments suggest these species may be sensitive to changes in climate and hard to restore. Next, I investigated the responses of Thalictrum dioicum, whose high survival and fecundity allowed for deeper investigation into the role of life history tradeoffs. We found that changes in snow cover affected reproduction and recruitment, but not survival. Specifically, reductions in snow throughout winter resulted in fewer more massive seeds, while a late season snow reduction produced more, less massive seeds. Germination was also adversely affected by snow reduction. Finally, I investigated how snow cover affected Thalictrum dioicum’s demography. Reductions in snow throughout winter suppressed population growth and seed survival was important in buffering these populations from decline. This suggests that seed banks may play an important role in buffering populations under climate change.These studies demonstrate the importance of continuing investigation into the effects of changing winter climate, as responses are species specific. Also, these studies highlight the inherently high interannual variability of winter conditions, suggesting that future investigations should incorporate diverse representations of the winter season, especially in temperate regions.
