A model for the number and sizes of crevices that can be seen on the exposed surface of submerged rock reefs

Autor:	J. F. Wickins, Jon Barry
Rok vydání:	1992
Předmět:	Statistics and Probability Surface (mathematics) geography geography.geographical_feature_category Habitat Ecological Modeling Mineralogy Population management Artificial reef Crayfish Reef Geology
Zdroj:	Environmetrics. 3:55-69
ISSN:	1099-095X 1180-4009
DOI:	10.1002/env.3170030104
Popis:	A simple model was devised to estimate the number and sizes of crevices visible at the surface of submerged, artificial rock reefs intended to provide shelter for lobsters and crayfish. The model assumes that the rocks are spherical and that each crevice is formed by the independent packing of three rocks. We use this model to derive the mean and variance of the rock size distribution needed to produce a given mean and variance for a crevice size distribution. These results are used as the initial estimates in an algorithm to choose the rock size distribution which comes closest to producing a crevice size distribution appropriate for the creation of new lobster or crayfish habitat.
Databáze:	OpenAIRE
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