Results

This graph shows the number of mussels found in each quadrate along with the % barnacle cover of that quadrate. Although the trend line is slight negative looking it is not significant. with a p value of (.41)

Nahant Discussion 

            The data shows no significant trend in the amount of Mytilus edulis in relation to the percent barnacles cover. This is most likely due to not taking into account the secondary settlement of mussels, to an adult aggregation. Both adults and juvenile mussels were counted.

            Future directions would be to conduct an extensive study on mussel recruitment by clearing different substrates and observe pre and post settlement of the mussel community. This would give an in-depth description of this community recruitment factors.

Observations

            One observation made was that more exposed east point had significantly more mussels present, usually within aggregation form. However the shelter area had many adult mussels alone. There may be more grazing in this area and less mussels can survive, however when they reach a certain age are able to avoid grazing by snails. Lack of competition between the aggregations may so be a factor in surviving in the more sheltered environment.