Hello,
First of all, un grand merci, to all those who have answered my previous
mail about Mozambique. Thanks to their advise we are now there for almost
two weeks.
I need a technical advise as I'm currently with no litterature.
There is here ba nice rocky shore with a succesion of Littorinidae,
Neritidae... species. I would like to describe the zonation of this
intertidal shore as precisely as possible.
It's rather easy to note the vertical distributin of each species but, if a
species is present from 3.5m to 2m most of the specimens are between 3.1 to
2.5 for example. So it's necessary to make a quantitative measurements.
It's where I need your help.
Could someone be kind enough to explain how technicaly I should do thqt ? I
imagine I have to define squares of 20x20cm for ex count the specimens for
each species in the squares... But how many square should I concider, how to
choose them, what size ?

I would be very grateful to anyone who could help me. Thank you very much in
advance,

Sophie

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