[R-sig-eco] unequal sampling effort with the use of different sampling equipment

[Roman Luštrik]

This smells like a job for a mixed effects model. You could try lme4, for
example.

Cheers,
Roman

On Wed, Sep 28, 2016 at 11:13 PM, Belyaeva Anna <BelyaevaAnna at hotmail.com>
wrote:

> Dear all,
>
> I have a question about unequal sampling effort with the use of different
> sampling equipment.
> Before I got involved in this project, its sampling design was determined
> and has unequal sampling effort (different number of samples) with the use
> of sampling equipment, which has different sampling area. 35 sediment
> samples were taken from each lake: 25 samples from the profundal zone and 5
> samples from each sublittoral and littoral zones. The corer was used to
> take profundal samples (16.61 cm2). PONAR was used to take sublittoral and
> littoral samples (sampling area of 231.04 cm2). I want to analyze if the
> number of sediment types differs between lake zones. What is the way to
> account for differences in sampling procedures? Is it appropriate to
> conduct regression of residuals or multiple regression on this data?
>
> Sincerely,
> Anna
>
>
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-- 
In God we trust, all others bring data.

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