Author: James S. WakeleyPublisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 20
Book Description
Avian Territory Mapping
Author: James S. WakeleyPublisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 20
Book Description
Avian Territory Mapping. Section 6.3.4, U.S. Army Corps of Engineers Wildlife Resources Management Manual
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 16
Book Description
This report on avian territory mapping is provided as Section 6.3.4 of the US Army Corps of Engineers Wildlife Resources Management Manual. The report is designed to assist the District or project biologist in the application of territory mapping to estimate the density and diversity of breeding bird populations for planning, management, and research purposes. The mapping method involves repeated visits to a relatively small study plot where observations of territorial songbirds are recorded on gridded maps. For each species, population density is determined by counting the number of occupied territories. The report presents guidelines concerning plot size and shape, plot maps, number of visits, survey timing and procedures, and interpretation of results.
A Comparison of Two Avian Census Methods
Author: Mary Elizabeth NeversPublisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 114
Book Description
Bird Census Techniques
Author: Colin J. BibbyPublisher: Elsevier
ISBN: 9780120958313
Category : Juvenile Nonfiction
Languages : en
Pages : 324
Book Description
In this book there are entire chapters devoted to the most widely used bird counting techniques, and attempts to amalgamate other counting methodologies into major groups were made. Examples of the use of methods are provided wherever possible and the relative value of various approaches for answering specific questions is also addressed. A newly revised edition of the immensely successful Bird Census Techniques An entirely new chapter covering the census methods recommended for tropical habitats Provides a concise guide to various census techniques and their opportunities and pitfalls
A Remote Sensing and GIS-based model of avian species habitat and its potential as a part of an environmental monitoring programme
Author: Thomas GottschalkPublisher: diplom.de
ISBN: 3836609622
Category : Political Science
Languages : en
Pages : 102
Book Description
Inhaltsangabe:Introduction: Over 10% (1186 species) of the bird species in the world are threatened with extinction in the near future, almost all of them due to habitat change or loss by man. Likewise, 1130 mammals, 296 reptiles, 146 amphibians and 5611 plants have been identified as endangered species. The destruction of natural habitat is the major factor contributing to the global species extinction event. The increasing loss of biodiversity has centred on conducting inventories and monitoring species and habitats, especially in identifying areas of high species richness, threatened species and species of restricted or local distribution. In 1992 the UNCED-Conference in Rio de Janeiro pointed out the need for monitoring the environment, leading to the Convention on Biological Diversity and the Agenda 21. Article 7 of the Convention on Biological Diversity deals with identification and monitoring, which are to be undertaken with sampling and other techniques. New methodologies with a view to undertaking systematic sampling and evaluation of the components of biological diversity are to be developed. While the number of identified threatened species has increased dramatically, a huge gap in knowledge of ecosystems and their fauna and flora remains. Distribution, status and ecology of species are mostly unknown in many countries, as is the degree they are endangered. In view of the immense unknown ecosystems in the world, a great number of which are located in developing countries, conventional survey and mapping methods cannot deliver the necessary information in a timely and cost-effective fashion. Nature conservation will require large volumes of Remote Sensing (RS) data if the quality of planning is to improve. With RS technology, we may be able to make real progress in understanding why more species occur in some places than in others and in identifying the most critical places that must be protected to preserve the maximum number of species into the 22nd century and beyond. As current air photos are often not available, satellite images are the sole source of data for many regions of the world. Fortunately, computer technology has improved enormously in the last years, mainly processing time, storage requirements as well as programme features and possibilities. Concurrent declining costs of computer hardware have favoured the design of new techniques for special data processing and combining remotely sensed information with other extensive [...]
Bird Census Techniques
Author: Colin J. BibbyPublisher: Academic Press
ISBN: 0080984509
Category : Science
Languages : en
Pages : 276
Book Description
Wild birds are counted for a wide variety of reasons and by a bewildering array of methods. However, detailed descriptions of the techniques used and the rationale adopted are scattered in the literature, and the newcomer to bird census work or the experienced bird counter in search of a wider view, may well have difficulty in coming to grips with the subject as a whole. While not an end in itself, numerical and distributional census work is a fundamental part of many scientific and conservation studies, and one in which the application of given standards is vital if results are not to be distorted or applied in a misleading way.This book provides a concise guide to the various census techniques and to the opportunities and pitfalls which each entails. The common methods are described in detail, and illustrated through an abundance of diagrams showing examples of actual and theoretical census studies. Anyone with a bird census job to plan should be able to select the method best suited to the study at hand, and to apply it to best effect within the limits inherent in it and the constraints of the particular study.The Royal Society for the Protection of Birds and the British Trust for Ornithology have for many years pioneered the collaboration of amateurs and professionals in various census studies. Three members of their staff, each with extensive field experience, now pool the knowledge of these investigations to lay the groundwork for sound census work in future years.
Population Limitation in Birds
Author: Ian NewtonPublisher: Academic Press
ISBN: 0080879233
Category : Technology & Engineering
Languages : en
Pages : 609
Book Description
This book meets the demand for a comprehensive introduction to understanding the processes of population limitation. Recognized world-wide as a respected biologist and communicator, Dr. Ian Newton has now written a clear and detailed treatise on local scale population limiting factors in birds. It is based almost entirely on results from field studies, though it is set in a contemporary theoretical framework. The 16 chapters fall under three major section headings: Behavior and Density Regulation; Natural Limiting Factors; and Human Impacts. Population Limitation in Birds serves as a needed resource expanding on Dr. David Lacks research in this area of ornithology in the 1950s. It includes numerous line diagrams and beautiful illustrations by acclaimed wildlife artist Keith Brockie. - Provides a sorely needed introduction to a long-established core subject in ornithology - Focuses on local scale factors - Written by a well-known biologist and effective communicator - Includes numerous line diagrams and beautiful illustrations by acclaimed wildlife artist Keith Brockie
Inventory Techniques for Sampling Avian Populations
Author: Kay FranzrebPublisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 22
Book Description
Handbook of Field Methods for Monitoring Landbirds
Author: Selection and Monitoring of Avian Indicator Species
Author: Robert C. SzaroPublisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 12
Book Description