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Exponential and linear estimations of grazing on bacteria: effects of changes in the proportion of marked cells

AuthorsSalat, Jordi ; Marrasé, Cèlia
Mathematical methods
Issue DateJan-1994
PublisherInter Research
CitationMarine Ecology Progress Series 104: 205-209 (1994)
AbstractWe develop a method to calculate grazing on bacteria determined by the disappearance of marked cells or particles. The method uses an exponential model based on population dynamics. We also describe 2 linear approaches: one is a model currently in use that takes into account only the initial proportion of marked cells; the other also includes their final proportion. An experimental data set is used to compare the 3 models. The first linear model tends to underestimate grazing due to lack of information concerning the final proportion of marked cells. The second linear model, which does take into account the final abundances of marked and natural cells, results in a good approximation to the exponential. We conclude that consideration of the final proportion of marked to natural cells is crucial to correctly estimate bacterial grazing
Description5 pages, 2 figures, 1 table, 1 appendix
Publisher version (URL)https://dx.doi.org/10.3354/meps104205
Identifiersdoi: 10.3354/meps104205
issn: 0171-8630
e-issn: 1616-1599
Appears in Collections:(ICM) Artículos
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