Repeated cluster analysis of stomach contents data: method and application to diet of cod in NAFO division 3L
Rice, J.C. (1988). Repeated cluster analysis of stomach contents data: method and application to diet of cod in NAFO division 3L. Environ. Biol. Fish. 21(4): 263-277
In: Environmental Biology of Fishes. Junk: The Hague. ISSN 0378-1909; e-ISSN 1573-5133, meer
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| Trefwoorden |
Analysis > Mathematical analysis > Statistical analysis
Diets
Interspecific relationships > Predation
Interspecific relationships > Predation > Prey selection
Gadidae Rafinesque, 1810 [WoRMS]; Gadus morhua Linnaeus, 1758 [WoRMS]; Pisces [WoRMS]
Marien/Kust |
| Abstract |
Data matrices of fish stomach contents frequently contain many zeros, and nonzero values often do not follow usually encountered statistical distributions. Therefore, many common methods of statistical analysis are inappropriate for such data. A method of repeated k-means cluster analysis is proposed for exploratory analysis of data sets on fish stomach contents. Objective rules are proposed for setting the clustering parameters, so the arbitrariness and subjectivity common in interpreting hierarchical clustering methods is avoided. |
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