124
therefore grow at their intrinsic maximum rate until biomass increases
to the point when competition for available nutrients and membrane
transport again limits growth. Thus, cage cultures of natural
populations, when combined with a dilution series might be used to
obtain an estimate of the potential v max for species within an
assemblage.
Obviously questions about the differences in growth rates
observed in cages and tubes must be
between
dilution and elevated growth
resolved.
The relationship
rate leads to intriguing
questions about nutrient limitation and growth rates in situ and the
relationship between biomass and growth rate.
nutrient availability or to grazing pressure?
Is this a response to
Cage culture techniques with natural populations incubated for
relatively short time frames is an effective method for determining
the relative and/or potential growth and production rates of
individual species comprising an assemblage.
After all it is both
biomass and growth rate which determines the production in an area.
The importance of the growth of one species relative to another in the
scheme of trophic interaction must, at some point, also be included in
the equation.
Literature Cited
Carpenter, E.J. and J.S. Lively (1980) Review of estimates to algal
growth using 14c tracer techniques. In: Falkowski, P.G. (ed.)
Primary Production in the Sea. Brookhaven Symposium on Biology
No. 31. Plenum Press, N.Y., p.16l.
Chisholm, S.W., and J.C. Costello (1980) Influence of environmental
factors and population composition on the timing of cell division
in
Thalassiosira
fluviatilis
(Bacillariophyceae)
grown
on
light/dark cycles. J. Phycol. 16: 375-383.
Chisholm, S.W. (1981) Temporal Patterns of Cell Division in Unicellular Algae. In: Platt, T. (ed.), Physiological Bases of
Phytoplankton Ecology.
Canadian Bulletin of Fisheries and
Aquatic Sciences No. 210.
Department of Fisheries and Oceans,
Ottawa, p. 150.
therefore grow at their intrinsic maximum rate until biomass increases
to the point when competition for available nutrients and membrane
transport again limits growth. Thus, cage cultures of natural
populations, when combined with a dilution series might be used to
obtain an estimate of the potential v max for species within an
assemblage.
Obviously questions about the differences in growth rates
observed in cages and tubes must be
between
dilution and elevated growth
resolved.
The relationship
rate leads to intriguing
questions about nutrient limitation and growth rates in situ and the
relationship between biomass and growth rate.
nutrient availability or to grazing pressure?
Is this a response to
Cage culture techniques with natural populations incubated for
relatively short time frames is an effective method for determining
the relative and/or potential growth and production rates of
individual species comprising an assemblage.
After all it is both
biomass and growth rate which determines the production in an area.
The importance of the growth of one species relative to another in the
scheme of trophic interaction must, at some point, also be included in
the equation.
Literature Cited
Carpenter, E.J. and J.S. Lively (1980) Review of estimates to algal
growth using 14c tracer techniques. In: Falkowski, P.G. (ed.)
Primary Production in the Sea. Brookhaven Symposium on Biology
No. 31. Plenum Press, N.Y., p.16l.
Chisholm, S.W., and J.C. Costello (1980) Influence of environmental
factors and population composition on the timing of cell division
in
Thalassiosira
fluviatilis
(Bacillariophyceae)
grown
on
light/dark cycles. J. Phycol. 16: 375-383.
Chisholm, S.W. (1981) Temporal Patterns of Cell Division in Unicellular Algae. In: Platt, T. (ed.), Physiological Bases of
Phytoplankton Ecology.
Canadian Bulletin of Fisheries and
Aquatic Sciences No. 210.
Department of Fisheries and Oceans,
Ottawa, p. 150.