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Limpet Shell Profile - A Level coursework

Discussion of the distribution and abundance of living organisms and how these properties are affected by interactions between the organisms and their environment

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Limpet Shell Profile - A Level coursework

Postby Frogman » Sun Oct 08, 2006 7:30 pm

Hi,

Im doing my A level biology coursework and my title relates to how Limpet Shell Profile is affected by distance from the low water mark.

What I was wondering is if anyone could help me with info on;

Why/How does limpet shell shape change?

Do any birds prey on Limpets?

And what stats test should I use, if my method uses an interrupted belt transect with a quadrat every 5m. Im measuring the height and base width of the limpets. Maybe work out a limpet height : base ratio? I was thinking of correlation coefficient but im not sure....

Any help at all would be greatly appreciated!

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Postby Frogman » Thu Oct 26, 2006 12:24 pm

Thanks for the help guys.....
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Postby Dr.Stein » Fri Oct 27, 2006 12:33 am

Limpet shell can change? :shock: I never knew that :? Maybe it is different species or subspecies? :roll:
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Postby Frogman » Sun Oct 29, 2006 10:15 pm

It's the same species, however I believe it now to be due to tidal action, with the limpets lower down the shore having a shallower shell profile to minimise surface area therefore reducing action from currents.
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Postby Dr.Stein » Mon Oct 30, 2006 2:36 am

How can you so sure it is the same species? Do you think that the change of the shell is kind of an adaptation form?
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