oa African Zoology - The benthos of South Lake, St Lucia following a period of stable salinities

Volume 18, Issue 4
  • ISSN : 1562-7020
  • E-ISSN: 2224-073X



The invertebrate benthos of South Lake, St Lucia was monitored monthly from August 1981 to July 1982 following a period of stable salinities. The major contributors to standing stock were the bivalve Solen cylindraceus and the polychaete Marphysa macintoshi. A total of 37 taxa were recorded compared with 23 in a previous survey in 1972 - 73. Present results are compared with those of 1972 - 73 and the differences discussed. The main changes were a decline in Assiminea, Nassarius and Prionospio and an increase in abundance of long-lived bivalves together with larger polychaetes. Species diversity at the sampling sites is analysed and discussed in terms of equitability of distribution.

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