Materials and Methods

            The sample areas were chosen at random to cover areas of different exposures ranging from from sheltered to exposed areas. The sampling began on the North-facing shore and continued along the shore-line southward. Once a general area was selected the quadrat was put down randomly and the following figures were recorded: slope, texture, tidal zone, exposure, temperature and direction of the rock, as well as the average size of the barnacles. The slope was found using a level and a protractor, designating 0° as the horizontal. All the angles recorded represent the rotation of the horizontal counter-clockwise. 

        The texture of the rock was determined by feel and designated as rough, smooth, or smooth with cracks. The tidal zone was determined by noting where the high tide and low tide levels were and determining where the area was in relation to the two. The tidal zones were split into low, low/mid, mid, high/mid, and high tide zones. Exposure was a measure of how much wave activity would be present on the area on a scale of 0-10, where 10 was completely open to the ocean. However after the data was collected the system was scaled down to sheltered, somewhat exposed, and very exposed areas, where the previous scale was divided into 0-3, 4-7, and 8-10 corresponded to the areas respectfully. The surroundings of the area were taken into account when judging the exposure, for example large boulders in front of the selected areas made the area more shelterd, also areas in the lower tidal regions were more exposed because that area would be in contact with the water more of the time. 

        Temperature was measured using an infrared thermometer, and the direction of the rock was estimated using the known direction of west and assigning the area to one of the corresponding eight major compass directions; north, north-east, east, etc.. Also seven random barnacles were measured for size by measuring the width of the operculum between the lateral plates with a digital caliper. These measurements were then averaged to give an average size of the barnacles in the area, which was used in later calculations. 

        Finally a picture was taken of the area and the live and dead barnacles were counted by using picture software on the computer and marking the barnacles with colors corresponding to live and dead. Dead barnacles were defined as barnacle shells that were empty, also only the barnacles whose operculum was completely in the quadrat were counted. All data was transcribed into Excel and used for the statistical tests.