A single-step method for identifying individual resources

Content Provider	Scilit
Author	Dasgupta, Nairanjana Alldredge, J. Richard
Copyright Year	2002
Description	Many methods of analysis have been used to test whether animals use resources in proportion to availability. Many of the most commonly used methods have been criticized because they ignore the induced correlation among cells in the multinomial classification table due to the unit-sum constraint. Some methods are also flawed because they assume that relocation data can be pooled across animals even though the animals may select habitats differently. We propose a method, based on the maximum of the joint chi-square, to compare habitat usage to availability for individual animals. This method is combined with a follow-up multiple comparison technique that takes account of the unit-sum constraint. We compare our proposed method to a method based on the sum of individual chi-squares and a method based on compositional analysis by analyzing data on gray partridge and ringnecked pheasant resource use. Simulation is also used to compare methods by evaluating their Type I error rates.
Related Links	http://link.springer.com/content/pdf/10.1198%2F10857110260141247.pdf
Ending Page	221
Page Count	14
Starting Page	208
ISSN	10857117
e-ISSN	15372693
DOI	10.1198/10857110260141247
Journal	Journal of Agricultural, Biological and Environmental Statistics
Issue Number	2
Volume Number	7
Language	English
Publisher	Informa UK Limited
Publisher Date	2002-06-01
Access Restriction	Open
Subject Keyword	Biology Compositional Analysis Experimentwise Error Control Goodness of Fit Gray Partridge Habitat Use Multiple Comparison Ring-necked Pheasant Wald Statistic
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Statistics and Probability Environmental Science Agricultural and Biological Sciences Statistics, Probability and Uncertainty