Robert C. Bailey – författare
Visar alla böcker från författaren Robert C. Bailey. Handla med fri frakt och snabb leverans.
6 produkter
6 produkter
880 kr
Tillfälligt slut
Since the late 1960s, the burgeoning gay rights movement has begun to have a profound effect on the politics of many American cities. This book presents a comprehensive exploration of gay and lesbian politics in urban settings. The study presents a window into how sexual identity has fostered political alliances and investigates the mayoral voting patterns in America's three largest cities - New York, Los Angeles and Chicago - offering case studies of specific urban political settings. The author addresses such issues as how policy is swayed in cities not known as gay centres and how specific issues are influenced in urban areas where gays and lesbians become part of the governing regime.
365 kr
Skickas inom 5-8 vardagar
Since the late 1960s, the burgeoning gay rights movement has begun to have a profound effect on the politics of many American cities. This book presents a comprehensive exploration of gay and lesbian politics in urban settings. The study presents a window into how sexual identity has fostered political alliances and investigates the mayoral voting patterns in America's three largest cities - New York, Los Angeles and Chicago - offering case studies of specific urban political settings. The author addresses such issues as how policy is swayed in cities not known as gay centres and how specific issues are influenced in urban areas where gays and lesbians become part of the governing regime.
197 kr
Skickas inom 5-8 vardagar
Robert C. Bailey reports on his observations of sixteen Efe Pygmy men in northeastern Zaire. Bailey lived and worked with the men and their families in the northern Ituri Forest from March 1980 to January 1982—his research was part of a multidisciplinary project called the Ituri Project. Bailey presents data on food production, subsistence behaviors, hunting techniques, relationships between hunters and village dwellers, and other aspects of the Efe society. Foreword by John D. Speth.
Bioassessment of Freshwater Ecosystems
Using the Reference Condition Approach
Inbunden, Engelska, 2003
1 063 kr
Skickas inom 10-15 vardagar
Aquatic ecosystem assessment is a rapidly developing field, and one of the newer approaches to assessing the condition of rivers and lakes is the Reference Condition Approach. This is a significant advancement in biomonitoring because it solves the problem of trying to locate nearby control or reference sites when studying an ecosystem that may be degraded, a problem that bedevils traditional approaches. Rather than using upstream reference sites in a river system or next-bay-over reference sites in a lake, an array of ecologically similar, least-exposed to stress sites scattered throughout a catchment or region is used. Once the reference condition has been established, any site suspected of being impacted can be assessed by comparison to the reference sites, and its status determined. The Reference Condition database, once formed, can be used repeatedly.
1 063 kr
Skickas inom 10-15 vardagar
Aquatic ecosystem assessment is a rapidly developing field, and one of the newer approaches to assessing the condition of rivers and lakes is the Reference Condition Approach. This is a significant advancement in biomonitoring because it solves the problem of trying to locate nearby control or reference sites when studying an ecosystem that may be degraded, a problem that bedevils traditional approaches. Rather than using upstream reference sites in a river system or next-bay-over reference sites in a lake, an array of ecologically similar, least-exposed to stress sites scattered throughout a catchment or region is used. Once the reference condition has been established, any site suspected of being impacted can be assessed by comparison to the reference sites, and its status determined. The Reference Condition database, once formed, can be used repeatedly.
- Nyhet
1 274 kr
Skickas inom 10-15 vardagar
This book provides the background, knowledge, and tools to model and assess the health of freshwater ecosystems. For more than 100 years, freshwater scientists have used the biota living in an ecosystem to assess the effects of human activity (bioassessment), and in the last 50 years, in jurisdictions around the world, bioassessment of freshwater ecosystems has been embedded in legislation. In the 1990s, there was general acceptance of the so-called “Reference Condition Approach" to bioassessment - the biota in a given type of healthy ecosystem (e.g., wadable stream, inland lake) vary in space and time so any judgement of ecosystem health or sickness has to take this variability into account.This volume brings all of this together, as author Robert Bailey first provides a brief synopsis of the variety of approaches used over the last century to distinguish healthy and unhealthy ecosystems (Chapter One), then demonstrates with two datasets (one simulated, one real) how to distinguish Reference and Test sites based on their natural and human activity environments (Chapter Two). In Chapter Three, Bailey uses the two datasets to demonstrate a new, causal modeling approach with Bayesian fitting to assess whether or not a test ecosystem is healthy. Many bioassessments are considered complete once a decision is made about a test site, but Bailey goes on to use the same modelling approach to try to understand why a site is unhealthy (Chapter Four), and then consider the often vexing issue about assessing changes in both healthy and unhealthy ecosystems through time in the face of large scale stressors like climate change (Chapter Five).This book aims to stimulate the transformation of bioassessment programs to efficient and powerful tools that influence protection and management of freshwater ecosystems. In doing so, the author shows how to make the best use of relevant data from expensive, site-visit scale biological samples to “big” datasets available from satellite and land cover mapping programs.