Population trends in British breeding birds /
John H. Marchant ... et al.]
-- Norfolk : British Trust for Ornithology, 1990
- 300 p.: il.
Índice: Acknowledgements.---1. The Monitoring Schemes.---Bird monitoring and surveillance.---An Introduction to the CBC.---The Waterways Bird Survey.---Integrated population Monitoring.---2. Indexing Population Levels.---The nature of an index.---How the indices are calculated.---Revision of the index figures.---The Reliability of the index data.---The Census plots - sampling problems.---Differences between bird species.---Observer effects.---Analyst effects.---Summary of strengths and weaknesses of the indices.---3. Overall Influeces on Bird Numbers.---Patterns of climate and weather in Britain.---Rainfall patterns in the western Sahel.---Loss of winter habitat for tropical migrants.---Habitat change in the British countryside.---Habitat changes on farmlan.---4. Population Trends.---The Selection of species for review.---The Main systematic section.---Additional species.---References Cited in the Text.---Appendices.---Index of Bird Species Names
ISBN 0903793032
Aves--Poblaciones--Gran Bretaña
598.2:591.9(410)
Índice: Acknowledgements.---1. The Monitoring Schemes.---Bird monitoring and surveillance.---An Introduction to the CBC.---The Waterways Bird Survey.---Integrated population Monitoring.---2. Indexing Population Levels.---The nature of an index.---How the indices are calculated.---Revision of the index figures.---The Reliability of the index data.---The Census plots - sampling problems.---Differences between bird species.---Observer effects.---Analyst effects.---Summary of strengths and weaknesses of the indices.---3. Overall Influeces on Bird Numbers.---Patterns of climate and weather in Britain.---Rainfall patterns in the western Sahel.---Loss of winter habitat for tropical migrants.---Habitat change in the British countryside.---Habitat changes on farmlan.---4. Population Trends.---The Selection of species for review.---The Main systematic section.---Additional species.---References Cited in the Text.---Appendices.---Index of Bird Species Names
ISBN 0903793032
Aves--Poblaciones--Gran Bretaña
598.2:591.9(410)