summary.ma

an object of class <code>ma</code>

object

description

a <code>ma</code> model object would like a glossary to 
be displayed

glossary

unspecified and unused arguments for S3 consistency

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Provides a summary of the fitted detection probability model
parameters, model selection criterion, and optionally abundance in the
covered (sampled) region and its standard error for all species.

utility

Performs distance sampling analyses on a number of species
at once and can account for unidentified sightings, model uncertainty
and covariate uncertainty. Unidentified sightings refer to sightings
which cannot be allocated to a single species but may instead be
allocated to a group of species. The abundance of each unidentified
group is estimated and then prorated to the species estimates. Model
uncertainty should be incorporated when multiple models give equally
good fit to the data but lead to large differences in estimated
density / abundance. Covariate uncertainty should be incorporated
when covariates cannot be measured accurately, for example this is
often the case for group size in marine mammal surveys. Variance
estimation for these methods is via a non parametric bootstrap.
The methods implemented are described in Gerodette T. and Forcada
J. (2005) <doi:10.3354/meps291001> Non-recovery of two spotted and
spinner dolphin populations in the eastern tropical Pacific Ocean.

summary.ma: Summary of multi-analysis object

Description

Usage

Arguments

Value