Re-analysis of a salp population time-series
Abstract
Weekly abundances of 2 salp populations (Salpa fusiformis and Thalia democratica) were determined for the period from 1967 to 1990 at a coastal station in the Western Mediterranean using a discrete abundance scale. A previous analysis modeled these data as a Markov chain with ordered states and found a significant effect of stratification on the Markov transition probabilities. An alternative analysis combining an underlying population model and a model of the observation process found qualitatively similar results, with population growth rate significantly related to stratification. However, by explicitly separating the population model from the observation model, the alternative approach has advantages including a closer connection to the underlying biology and the capability to predict salp abundance.
Additional Information
© 2010 Inter Research. Submitted: October 30, 2009; Accepted: September 7, 2010. Online publication date: November 18, 2010. Proofs received from author(s): November 3, 2010. Data were kindly provided by F. Menard. We acknowledge the extremely helpful comments of 3 anonymous reviewers with gratitude. We also thank the instructors and students of the 2008 Zooplankton Modeling course at Woods Hole Oceanographic Institution, where this study was conceived.Attached Files
Published - Sutherland2010p12128Mar_Ecol-Prog_Ser.pdf
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Additional details
- Eprint ID
- 21370
- Resolver ID
- CaltechAUTHORS:20101214-153626099
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2010-12-14Created from EPrint's datestamp field
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2021-11-09Created from EPrint's last_modified field