Diagnosing the uncertainty of taxa relative abundances derived from count data

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doi: 10.1016/j.marmicro.2011.01.007
Author(s): Heslop, D.; de Schepper, S.; Proske, U.
Author Affiliation(s): Primary:
Universität Bremen, Fachbereich Geowissenschaften, Bremen, Germany
Volume Title: Marine Micropaleontology
Source: Marine Micropaleontology, 79(3-4), p.114-120. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0377-8398 CODEN: MAMIDH
Note: In English. Includes 4 appendices. 14 refs.; illus.
Summary: When working with micropaleontological assemblage data it is necessary to accept that the true population can never be quantified fully. Thus, the investigator must count individuals in the hope of obtaining a representative sample and then determine the uncertainty associated with the taxa relative abundances. Such uncertainties can be obtained by assuming that the relative abundances originate from a multinomial distribution for which a confidence region can be obtained using existing statistical methods. For assemblages containing more than three taxa, however, the determination and representation of multinomial confidence regions become exceedingly cumbersome. Here we outline a simple method that allows diagnostic values of the multinomial confidence region to be calculated for any number of taxa. Examples of such values are the most extreme relative abundances, which allow the user to quantify the interval of a given taxon within the confidence region and the maximum/minimum values of various diversity indices. Abstract Copyright (2011) Elsevier, B.V.
Year of Publication: 2011
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
ODP Ocean Drilling Program
Key Words: 10 Paleontology, Invertebrate; Atlantic Ocean; Benthic taxa; Biodiversity; Cenozoic; Cretaceous; DSDP Site 525; Deep Sea Drilling Project; Foraminifera; IPOD; Invertebrata; K-T boundary; Leg 208; Leg 74; Lower Paleocene; Mathematical methods; Mesozoic; Microfossils; ODP Site 1262; Ocean Drilling Program; Paleocene; Paleogene; Planktonic taxa; Protista; Quantitative analysis; South Atlantic; Statistical analysis; Stratigraphic boundary; Tertiary; Uncertainty; Upper Cretaceous; Walvis Ridge
Coordinates: S290415 S290414 E0025908 E0025907
S271100 S271100 E0013500 E0013400
Record ID: 2011099233
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands