Purpose/Procedure: In order to gain a deeper understanding of the local distribution and abundance of Chondracanthus, I performed a short study of the drift at four local sites along Monterey Bay. I measured the total amount of drift and percentage of this which was Chondracanthus at each site. The study sites and results are given below, as well as an indication of the exposure level at each site.
1-extremely exposed shore
From: Julie M. Johnson. 1982. 175 H. Unpublished paper on file in HMS Library. Species Distribution of Supralittoral Lichens on the Southern Shore of Monterey Bay.
Cannery Row-San Carlos Beach
Conclusions: The results from this brief study are easily represented on the chart. First, there were obvious discrepancies between the total amounts of drift at the four sites. I had suspected that drift might vary with exposure level: the more exposed the beach, the more drift it would have. This held true somewhat, except for the drift data from Lover's Point Beach. Further exploration yielded additional data that this beach apparently is often cleaned for tourist use, which would obviously decrease the amount of drift and make this area of the study less precise. However, the data on Chondracanthus percentage of drift at each site remains valid. On average, about 40% of the total drift was Chondracanthus, indicating that this species is quite abundant, and individual percentages at each site were relatively consistent, indicating that the species is also widely distributed locally.
Suggested Further Study: There are obviously many ways which I would like to extend this study if time allowed. Some suggestions for further study include: