. The Caribbean forester. Forests and forestry Caribbean Area Periodicals; Forests and forestry Tropics Periodicals. Vol. 24 No. 2 - 1963 .77. i I 0 I .40 I .50 RAIN FALL , Inches I .6 0 I .70 i .80 1 .90 Figure 1. Interception as related to rainfall, all plots. Solid line is in inches (Y = — , r = ), and dash line is in percentage. La interceptacion en relacion a la preeipitacion, todas las parcelas. La Hnea solida representa las pulgadas, la linea interrumpida el por- eentaje. Inches of interception, for all crown class- es combined was related to inches of rainfall, figure
. The Caribbean forester. Forests and forestry Caribbean Area Periodicals; Forests and forestry Tropics Periodicals. Vol. 24 No. 2 - 1963 .77. i I 0 I .40 I .50 RAIN FALL , Inches I .6 0 I .70 i .80 1 .90 Figure 1. Interception as related to rainfall, all plots. Solid line is in inches (Y = — , r = ), and dash line is in percentage. La interceptacion en relacion a la preeipitacion, todas las parcelas. La Hnea solida representa las pulgadas, la linea interrumpida el por- eentaje. Inches of interception, for all crown class- es combined was related to inches of rainfall, figure 1. The regression is estimated by a linear function of Interception = Rain- fall -\-. , with a correlation coefficient oii .951. Interception varied from 0 05 inch when rainfall was .05 inch, to inch when rainfall was .80 inch. Fifty-four percent of the measured rainfall was intercepted. 11 intercep;ion in inches is converted to percentage interception, a curvilinear expre - sion results. Interception was found to differ with crown density, figure 2. Only 23 percent cf the total rainfall was intercepted by the 72-76 percent crown density class, but 57 percent was intercepted by the SO-86 percent density class. These results indicate vhat rather small variations in crown den-ity ac- count for large variations in interception rate. To obtain a more exact idea as to this ra'.e, interception was directly related to crown density, figure 3. Interception clearly increased with crown density. For each one percent increase in crown density from 72-S7 percent, there was a 3 percent increase in interception rate. The regres-ion is approximated by a linear func- tion of Y = — , with a correla- tion coefficient of If this relationship is maintained, all of a is intercepted at r. crown dersity of 97 percent. DISCUSSION AND CONCLUSIONS While the relationships between the sever- al variables used here were found to be signi- fican: to highly s
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