A means of quantifying the optimal stocking density of oysters relative to their food resources (quantity and nutritional quality) is a necessary feature in the sustainable management of the oyster industry at a time of increasing demand both for a greater volume of production and improved production efficiency. This has been recognized by the industry as a major need for there to be further development of production. It is also urgent because of increasing scrutiny and regulation under principles of ecologically sustainable development. Maximal development can only be sustainable if local carrying capacity is well understood.

Of the various ways, in theory, of arriving at quantification of optimal densities, an approach which concentrates upon the oyster and its food, measured initially at the scale of the individual lease, is practical and feasible. Once this relationship is defined, it may then with confidence be extended to a variety of habitat conditions, since it will be based upon the fundamental physiological properties of the species.

This proposal aims to define these relationships via rigorous physiological determinations, coupled with appropriate field studies and modelling. The proposed product will be a tool of value to the oyster farmer and to those concerned with planning and approving the expansion of leases within coastal habitats.