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Breccia Site 3

West face on 20th May

Doesn’t look like much does it?

 

 

Method –
Experimental

I won’t show all the stages again, but used the tape to co-ordinate the close ups (see left). At next level a reference picture taken with a 2nd tape perpendicular ot original.

And then the close up

 

 

3.5 inches X 0.5 limpets

The smaller brown one seems typical that stage—note how close the apex (a on image left) is to the front/ head of limpet. Also not the generally parallel sides that slightly more narrow at head region.

I am assuming the larger limpet is still same species – just older

 

Monitoring Semibalanus @ 25.5 X 1.5

By identifying individual Barnacles able to see how fast they grow over given time and to look at mortality – this is one of a group of still small Semibalanus --- the juvenile Limpet has a pattern which may make it recognizable over short periods of time

Monitoring Semibalanus @ 22 X 3.5

Includes 3-5 limpets in ‘clearings’

 

 

5.0 X ??--- thus higher on rock

These limpets are changing into the “striped’ form --- I am assuming all three the same species and the ‘spotted’ pattern (marked with a ‘c’) is an earlier stage of development

 

 

Still finding some <2mm

This image from May 23, 2004. It shows one of smallest Limpets on Site 3, which argues that still may be getting some spat fall within last few weeks

Created by LG on 5/20/2004

Last updated on Sunday, May 23, 2004