© 1969 by The Society for Integrative and Comparative Biology
Effect of the Nature of the Substratum on the Force Required to Detach a Common Littoral Alga
The Dunstaffnage Marine Research Laboratory Scotland
Adelphi University Institute of Marine Science Oakdale, New York
It has been shown that the force required to detach the holdfasts of Fucus vesiculosus depends upon the nature of the substratum; adhesion is less to barnacle shells. The loweradhesion appears to be due to a partial dissolution of the shell by acidic material, probably exndates. Growth of germlings on various substrata indicates that thalli and primary rhizoids develop better on calcareous substrata. Some ecological consequences of the phenomena are examined.