Five
rocks of varying color, shape, and size, were selected from Spittal
Pond. After measuring their area, I labeled them using Sharpie markers and B-tags (1-5) and randomly
distributed
them in the 1 m^2 area. Five rocks were consequently removed from that
area. An area of about 1 cm of Batillaria minima was cleared around the rocks and they
were left alone overnight. After 24 hours, they were
photographed (unperturbed, using a SONY Cybershot) and the following
quantities were measured: 1). concentration of snails around the rock
(cm) 2). percent cover of snails under the rock 3).
percent cover of snails above the rock. From these
measurements and the area of each rock, the area of snails
under and above the rocks was calculated. After
measurements were taken, each rock was removed and cleared of
snails. Then each rock was randomly placed within the area and 1
cm around each rock was cleared of snails. The temperature and
weather for each day were also recorded. This was done for
three days. Percent cover of the area of snails above the rock and under the rock were
compared using an ANOVA to
determine if there was a statistical difference. T-tests were also
conducted for percent cover under and above the rock. This was
done in two way comparisons for each rock.
ROCK 1:
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ROCK 2:
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ROCK 3:
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ROCK 4:
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ROCK 5:
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