. Defoliation and mortality in Connecticut forests. Defoliation; Hardwoods; Trees; Forests and forestry. Connecticut Agricultural Experiment Station Bulletin 796 compared to undefoliated tracts. 600. o >- o 400 800 1200 1600 2000 2400 1957 TOTAL POPULATION, STEMS/A Fig. 0 400 800 1200 1959 TOTAL POPULATION, STEMS/A 3. Periodic mortality of major species in tracts with major defoliation. The sites are as in Fig. 2. The line is the mortality trend observed in 1959-70 in undefoliated tracts (Fig. 2, lower). Upper. Meshomasic series, 1957-67. Unci re led numbers are from Turkey Hill defoliated
. Defoliation and mortality in Connecticut forests. Defoliation; Hardwoods; Trees; Forests and forestry. Connecticut Agricultural Experiment Station Bulletin 796 compared to undefoliated tracts. 600. o >- o 400 800 1200 1600 2000 2400 1957 TOTAL POPULATION, STEMS/A Fig. 0 400 800 1200 1959 TOTAL POPULATION, STEMS/A 3. Periodic mortality of major species in tracts with major defoliation. The sites are as in Fig. 2. The line is the mortality trend observed in 1959-70 in undefoliated tracts (Fig. 2, lower). Upper. Meshomasic series, 1957-67. Unci re led numbers are from Turkey Hill defoliated in 1964. Circled numbers are from Cox, Reeves and Cabin defoliated in 1961, 1962, and 1963. Lower. Gay City, 1959-70. Uncircled 4 is the dry site defo- liated in 1962. Circled numbers are the moister sites defoliated in 1962 and 1967. 3 shows observed during 1959-70 at In 1962 defolia- of the canopy on than half on the 1967 the dry site The lower portion of Fig, mortality of major species Gay City of the New series, tion removed less than half the dry ridgetop but more remainder of the tract. In was undefoliated while the remainder of tract was more than 75 percent defoliated. The uncircled 4 indicates mortality on the once- defoliated dry site. The circled numbers are the twice-defoliated moister sites. As before the line is the mortality trend on undefoli- ated tracts of the New series, 1959-70 (Fig. 2, lower). Mortality on the once-de- foliated dry site (4) lies below the trend in undefoliated tracts during 1959-70. Mortality on the twice-defoliated moist (2) and medium moist (3) sites lies above the trend and on the medium moist site is clearly greater. Average annual mortality of major species was percent on the once-defoliated dry site but more than 3 percent on the twice-defoli- ated sites. The upper portion of Fig. 4 shows the observed mortality of major species during 1967-77 on the Meshomasic series. All four tracts were defoliated twice in 1971-72 but in differin
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