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Table 2 Daily mean, maximum and minimum rock surface temperatures (RST, °C) at the upper (U) and lower (L) high-intertidal zones from September to November 2006 during daytime hours

From: Grazing effects of the periwinkle Echinolittorina peruviana at a central Peruvian high rocky intertidal

 

U (mean; SD)

L (mean; SD)

N

D

t

df

P

Mean RST

20.74; 3.40

19.50; 3.18

39

1.24

7.78

38

<0.001

Maximum RST

28.63; 6.38

26.40; 6.45

39

2.23

7.67

38

<0.001

Minimum RST

15.64; 1.08

15.26; 0.84

39

0.38

4.74

38

<0.001

  1. Differences in daily RST between the upper and lower zones were analyzed with a paired t-test on the pooled data throughout the sampling period
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Helgoland Marine Research

ISSN: 1438-3888

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