. The ecology of the Apalachicola Bay system : an estuarine profile . YEAR and MONTH Figure 39. Long-term fluctuations of squid abundance, salinity, and temperature at stations lA, IB, and IC in the Apalachicola estuary from June 1972 through March 1979 (Laughlin and Livingston 1982). average (51 crabs/month) and was not directly correlated with abiotic or physico-chemical factors; summer rainfall varied from minimal (1976) to maximal (1975) values and temperature varied little. The total population abundance (all sizes) following the winter recruitments of 1972-73, 1974-75, and 1975-76 was ab
. The ecology of the Apalachicola Bay system : an estuarine profile . YEAR and MONTH Figure 39. Long-term fluctuations of squid abundance, salinity, and temperature at stations lA, IB, and IC in the Apalachicola estuary from June 1972 through March 1979 (Laughlin and Livingston 1982). average (51 crabs/month) and was not directly correlated with abiotic or physico-chemical factors; summer rainfall varied from minimal (1976) to maximal (1975) values and temperature varied little. The total population abundance (all sizes) following the winter recruitments of 1972-73, 1974-75, and 1975-76 was above the 6-year average (59 crabs/ month). Summer recruitment values were not included in these calculations. Alternatively, winter recruitment was above the annual mean in 1973-74, l'376-77. and 1977-78, and was correlated with relatively high (1974, 1977) and low (1978) winter river flow. Water temperatures were just above the average in 1974 and markedly low in 1977 and 1978, Summer recruitment levels and total population abundance following the winters of these years were all below the 6-year average. Tn fact, dramatic decreases in total numbers of crabs occurred in 1974 and 1978. Again, none of these values was significantly correlated with any single abiotic factor. With the exception of 91
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