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Estimating the Size of a Transient Population
Author(s) -
Routledge R. D.,
Smith G. E. J.,
Sun L.,
Dawe N.,
Nygren E.,
Sedinger J. S.
Publication year - 1999
Publication title -
biometrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.298
H-Index - 130
eISSN - 1541-0420
pISSN - 0006-341X
DOI - 10.1111/j.0006-341x.1999.00224.x
Subject(s) - estimator , residence , population , geography , statistics , residence time (fluid dynamics) , demography , population size , transient (computer programming) , econometrics , computer science , mathematics , geology , geotechnical engineering , sociology , operating system
Summary. Migratory populations often stop over for short periods of time at predictable sites along their migration routes. These staging areas can be heavily used and are potentially critical to the survival of the migrants. This paper presents a method for estimating the number of individuals using such an area and their average residence time. The estimator is based on daily population estimates and records of repeat sightings of identifiable individuals. Its application is illustrated with observations on a population of migrating birds, some of which could be identified from bands that were readable from a distance.