A study of intertidal invertebrates of two beaches of Passamaquoddy Bay

The invertebrate macrofauna of two beaches at Waweig and Sam Orr, Passamaquoddy Bay, New Brunswick, were studied from May through September, 1976 to note the species present and to determine the distribution and relative abundance of the major species. Triplicate samples were collected once monthly from each of five stations along transects at both sites. The oligochaete Peloscolex benedini (Udekem) was the dominant organism at both areas, particularly at Waweig. There, it averaged 22,000/m² during the summer and peaked at 42,000/m² on 1 October. Overall, 30 and 34 species were found at Waweig and Sam Orr, respectively, during the sampling period representing the phylum Nemerteana, classes Polychaeta, Oligochaeta, Gastropoda, Pelecypoda, and orders Isopoda and Amphipoda.