Occupancy Of Semi Aquatic Mammals In An Urban Landscape
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Occupancy Of Semi Aquatic Mammals In An Urban Landscape
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Author : Devin M. Hoffer
language : en
Publisher:
Release Date : 2021
Occupancy Of Semi Aquatic Mammals In An Urban Landscape written by Devin M. Hoffer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with Beavers categories.
Bridging Aquatic And Terrestrial Ecosystems
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Author : Angela Holland
language : en
Publisher:
Release Date : 2016
Bridging Aquatic And Terrestrial Ecosystems written by Angela Holland and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Aquatic ecology categories.
Mammals in freshwater aquatic systems play important roles as ecosystem engineers, trophic transfer agents, and apex predators, thus acting as indicators of freshwater ecosystem function. Watersheds inhabited by semi-aquatic mammals have increased links between adjacent terrestrial and aquatic ecosystems compared to watersheds where they are not present. Semiaquatic mammals not only exert top-down influences on streams, but are affected by bottom-up forces from the riparian system itself. The goal of this study was to identify variables that correlate with the presence of beaver (Castor canadensis), muskrat (Ondatra zibethicus ), mink (Neovison vison), and river otter ( Lontra canadensis), including their interactions, resulting in a better understanding of the areas where these semi-aquatic mammals occur and their effects on the riparian system. The objectives of this study were (1) to identify variables related to the probability of detection, initial occupancy, colonization, and extinction of the 4 semi-aquatic mammals in southern Illinois; and (2) to test if the reintroduction of river otter has changed stream food webs. To address my first objective, I sampled 120 bridge sites in 2 periods (winter: Jan-Feb; and spring: Mar-Apr) during 2012–2014 in 11 major watersheds in the southern third of Illinois (44,526 km2) to estimate multi-season occupancy. Each survey unit was a 400-m stream segment visited twice by 2 observers for a total of 4 observations per site per period. Observers recorded all mammal signs found, including sign species and type. Sites were Intensive Basin Survey Sites sampled by Illinois Department of Natural Resources (IDNR) and Illinois Environmental Protection Agency (IEPA), allowing data collected by the state to be available for explanatory variables for mammal occupancy. Data collected by the Illinois Natural History Survey (INHS) also were available for a subset of sites. I collected local- and landscape-scale habitat and weather variables for each site. I developed hypotheses regarding occupancy of sites based on land-cover, human disturbance, and stream attributes for each species. I developed additional hypotheses regarding prey availability and water quality for river otter and mink. Sites used in each analysis were dependent on data available to address the hypotheses of interest. My results indicate that semi-aquatic mammals in Illinois were affected by a riparian habitat, water availability, and stream community variables at both the landscape and local scale. I found high occupancy of mink, beaver, and muskrat across the entire landscape of southern Illinois, and my results suggest that the geographic range of river otter continues to expand. Relationships of occupancy of these semi-aquatic mammals to measurements of urban areas and human disturbance were not consistent across all species. Mink and river otter occupancy were both predicted by aspects of prey availability, indicating the importance of predator-prey relationships in occupancy dynamics of riparian predators. Hypotheses regarding predator pressure and changes in environmental variables were used to test the effects of river otter reintroduction on stream communities. For this objective, I used structural equation models. I compared fish and macroinvertebrate communities from before (1982-1995) and after (2005-2013) reintroduction of river otter, which occurred in 1994–1996. Fish and macroinvertebrate community data for 35 sites located throughout 6 major watersheds in southern Illinois (25,550 km2) were obtained from state agencies. Changes in stream communities were evaluated using 4 metrics (species richness, species dominance, skewness in size distribution of prey, and proportion of individuals in the size class preferred by river otter). Neither the inclusion of river otter site use nor change in stream quality, measured by change in % forest, improved models over the simple model which only included fish and macroinvertebrate communities. Overall, I found no evidence that river otter presence or change in forest cover affected stream fish and macroinvertebrate communities. (Abstract shortened by ProQuest.)
Anthropogenic Environmental Change And Habitat Occupancy By Riparian Muskrats In A Midwestern Landscape
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Author : Lisa A. Bucci
language : en
Publisher:
Release Date : 2010
Anthropogenic Environmental Change And Habitat Occupancy By Riparian Muskrats In A Midwestern Landscape written by Lisa A. Bucci and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Increased urban land cover and more intensive agriculture in the Midwest have changed the landscape for wildlife species. Distributions of semi-aquatic mammals such as muskrats (Ondatra zibethicus) may respond to environmental changes including increased urbanization, alteration of hydrology, introduction of invasive species, and changes in predator communities. The response of muskrat populations to landscape and local-scale changes is important for the conservation of this economically-valuable furbearer species. I completed multiple surveys for occupancy by muskrats at 90 sites in central Illinois in 2007 and 2008. Sites were stratified based on urbanization levels. Occupancy was determined by presence of tracks, scat, and feeding sign in 200-m stream segments that approximated a home-range scale. I calculated detection probabilities to determine the likelihood of false absences. The per-survey detection probability was 0.79 (SE = 0.04) in 2007 and 0.76 (SE = 0.04) in 2008. Detection was related positively to Julian date and negatively to wood debris abundance. Muskrats occurred more often at sites with a greater percentage of developed landcover, as well as in wider and deeper streams that drained more area. Year-to-year turnover was explained by water availability and measures of stream size. Although invasive reed canary grass was the dominant species at an average of 2.3 (SE = 0.20) out of 5 habitat sampling stations per site, it did not affect site occupancy or turnover. Occupancy patterns may be related to lower predation risk near human development and in wider, deeper streams. Overall, muskrat distribution was related to local and landscape variables and was insensitive to some aspects of environmental change.
Urban Wildlife Habitats
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Author : Lowell W. Adams
language : en
Publisher: U of Minnesota Press
Release Date : 1994
Urban Wildlife Habitats written by Lowell W. Adams and has been published by U of Minnesota Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Nature categories.
Urban Wildlife Habitats was first published in 1994. Minnesota Archive Editions uses digital technology to make long-unavailable books once again accessible, and are published unaltered from the original University of Minnesota Press editions. In cities, towns, and villages, between buildings and parking lots, streets and sidewalks, and polluted streams and rivers, there is ever less space for the "natural," the plants and animals that once were at home across North America. In this first book-length study of the subject, Lowell W. Adams reviews the impact of urban and suburban growth on natural plant and animal communities and reveals how, with appropriate landscape planning and urban development, cities and towns can be made more accommodating for a wide diversity of species, including our own. Soils and ground surface, air, water, and noise pollution, space and demographics are among the urban characteristics Adams considers in relation to wildlife. He describes changes in the composition and structure of vegetation, as native species are replaced by exotic ones, and shows how, with spreading urbanization of natural habitats, the diversity of species of plants and animals almost always declines, although the density of a few species increases. Adams contends, however, that it is possible for a wide variety of species to coexist in the metropolitan environment, and he cites a growing interest in the practice of "natural landscaping," which emphasizes the use of native species and considers the structure, pattern, and species composition of vegetation as it relates to wildlife needs. Urban habitats vary from small city parks in densely built downtowns to suburbs with large yards and considerable open space. Adams discusses the opportunities these areas--along with school yards, hospital grounds, cemeteries, individual residences, and vacant lots--provide for judicious wildlife management and for the salutary interaction of people with nature. Lowell W. Adams is vice president of the National Institute for Urban Wildlife in Columbia, Maryland.
Mammal Tracks Sign
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Author : Mark Elbroch
language : en
Publisher: Rowman & Littlefield
Release Date : 2019-08-23
Mammal Tracks Sign written by Mark Elbroch and has been published by Rowman & Littlefield this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-08-23 with Nature categories.
The most comprehensive reference guide to mammal tracks and sign for North America. This new edition is more visual, with more than 1300 photos and 450 illustrations for easy comparison and identification of similar sign. Each species account includes information on tracks and trails, scat and urine, nests and lodges, as well as sign on the ground, in trees and shrubs, on fungi and on plants. Winner of the 2019 National Outdoor Book Award for Outdoor Classic Books.
Camera Trapping For Wildlife Research
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Author : Francesco Rovero
language : en
Publisher: Pelagic Publishing Ltd
Release Date : 2016-06-18
Camera Trapping For Wildlife Research written by Francesco Rovero and has been published by Pelagic Publishing Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-06-18 with Photography categories.
Camera trapping is a powerful and now widely used tool in scientific research on wildlife ecology and management. It provides a unique opportunity for collecting knowledge, investigating the presence of animals, or recording and studying behaviour. Its visual nature makes it easy to successfully convey findings to a wide audience. This book provides a much-needed guide to the sound use of camera trapping for the most common ecological applications to wildlife research. Each phase involved in the use of camera trapping is covered: - Selecting the right camera type - Set-up and field deployment of your camera trap - Defining the sampling design: presence/absence, species inventory, abundance; occupancy at species level; capture-mark-recapture for density estimation; behavioural studies; community-level analysis - Data storage, management and analysis for your research topic, with illustrative examples for using R and Excel - Using camera trapping for monitoring, conservation and public engagement. Each chapter in this edited volume is essential reading for students, scientists, ecologists, educators and professionals involved in wildlife research or management.
Urban Wildlife Conservation
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Author : Robert A. McCleery
language : en
Publisher: Springer
Release Date : 2014-11-11
Urban Wildlife Conservation written by Robert A. McCleery and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-11-11 with Science categories.
In the past, wildlife living in urban areas were ignored by wildlife professionals and urban planners because cities were perceived as places for people and not for wild animals. Paradoxically, though, many species of wildlife thrive in these built environments. Interactions between humans and wildlife are more frequent in urban areas than any other place on earth and these interactions impact human health, safety and welfare in both positive and negative ways. Although urban wildlife control pest species, pollinate plants and are fun to watch, they also damage property, spread disease and even attack people and pets. In urban areas, the combination of dense human populations, buildings, impermeable surfaces, introduced vegetation, and high concentrations of food, water and pollution alter wildlife populations and communities in ways unseen in more natural environments. For these ecological and practical reasons, researchers and mangers have shown a growing interest in urban wildlife ecology and management. This growing interest in urban wildlife has inspired many studies on the subject that have yet to be synthesized in a cohesive narrative. Urban Wildlife: Theory and Practice fills this void by synthesizing the latest ecological and social knowledge in the subject area into an interdisciplinary and practical text. This volume provides a foundation for the future growth and understanding of urban wildlife ecology and management by: • Clearly defining th e concepts used to study and describe urban wildlife, • Offering a cohesive understanding of the coupled natural and social drivers that shape urban wildlife ecology, • Presenting the patterns and processes of wildlife response to an urbanizing world and explaining the mechanisms behind them and • Proposing means to create physical and social environments that are mutually beneficial for both humans and wildlife.
Policies For Managing Urban Growth And Landscape Change
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Author :
language : en
Publisher:
Release Date : 2005
Policies For Managing Urban Growth And Landscape Change written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Cities and towns categories.
Marine Mammals Ashore
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Author : Joseph R. Geraci
language : en
Publisher: National Aquarium in Baltimore
Release Date : 2005
Marine Mammals Ashore written by Joseph R. Geraci and has been published by National Aquarium in Baltimore this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Marine mammals categories.
Comprehensive manual for understanding and carrying out marine mammal rescue activities for stranded seals, manatees, dolphins, whales, or sea otters.
Linkages In The Landscape
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Author : Andrew F. Bennett
language : en
Publisher: IUCN
Release Date : 2003
Linkages In The Landscape written by Andrew F. Bennett and has been published by IUCN this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Corridors categories.
The loss and fragmentation of natural habitats is one of the major issues in wildlife management and conservation. Habitat "corridors" are sometimes proposed as an important element within a conservation strategy. Examples are given of corridors both as pathways and as habitats in their own right. Includes detailed reviews of principles relevant to the design and management of corridors, their place in regional approaches to conservation planning, and recommendations for research and management.