UID:
almafu_9958131485102883
Umfang:
1 online resource (276 p.)
ISBN:
0-08-098450-9
,
1-299-19578-4
Inhalt:
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 dist
Anmerkung:
"Published for the British Trust for Ornithology and the Royal Society for the Protection of Birds."
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Front Cover; Bird Census Techniques; Copyright Page; Acknowledgements; About the Authors; Table of Contents; Preface; Chapter 1. Purpose and Design in Counting Birds; Introduction; Stock-taking; Distribution studies; Population monitoring; Assessment of habitat requirements; Management experiments; Conclusions; Summary and points to consider; Chapter 2. Census Errors; Introduction; Precision; Accuracy; Sources of bias; Summary and points to consider; Chapter 3. Territory Mapping Methods; Introduction; Field methods; Variations of the method; Interpretation of results; Assumptions
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Examples of the use of territory mappingSummary and points to consider; Chapter 4. Line Transects; Introduction; Field methods; Interpreting counts with distance estimates; Assumptions; Examples of the use of line transects; Summary and points to consider; Chapter 5. Point Counts; Introduction; What do densities derived from point counts mean?; Field methods; Interpreting counts with distance estimates; Assumptions; Examples of the use of point counts; Summary and points to consider; Chapter 6. Catching and Marking; Introduction; Major considerations in catching and marking; Marking methods
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Capture-recapture methodsAssumptions; Estimating population size; Methods based on catch per unit effort; Further developments of studies involving capture; Summary and points to consider; Chapter 7. Counting Individual Species; Introduction; Direct and indirect counting; Look-see counting; Methods for counting different groups of birds; Summary and points to consider; Chapter 8. Counting Colonial Nesting and Flocking Birds; Introduction; Seabird breeding colonies; Counting methods for various groups of seabirds; Monitoring breeding seabird populations; Flocking birds
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Summary and points to considerChapter 9. Distribution Studies; Introduction; Atlas studies; Examples of atlases; Single-species studies; Habitat-scale studies; Examples of the use of distribution studies; Summary and points to consider; Chapter 10. Description and Measurement of Bird Habitat; Introduction; Habitat mapping methods; Examples of the use of habitat mapping studies; Measuring habitat variables in sample plots; Grassland habitat variables; Examples of studies using grassland habitat variables collected in study plots; Woodlands and scrub
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Examples of the use of quantitative measurement of structural variables in study plots in woodlands and scrubIndividual-based studies; Examples of the use of measuring habitat variables at the position of an individual bird; Summary and points to consider; Appendix: Scientific names of mammals and plants mentioned in the text; References; Species Index; General Index
,
English
Weitere Ausg.:
ISBN 0-12-095830-9
Sprache:
Englisch
