Transcript Figure 1. Twenty-six years of mortality data for RS25

Figure 1. Twenty-six years of mortality data for RS25
Mortality rate = # of deaths during interval (year following remeasurement year to next remeasurement year)/live trees at beginning of interval
(includes ingrowth from previous remeasurement year)*100
calculations:
mort rate (%)
(25/434)100 = 5.76
mort n
year
live tree n
(22/414)100 = 5.31
25
1977
434
78
79
80
81
82
83
407 -52 = 355
plus 15 ingr = 370
414 - 22 = 392
plus 15 ingr = 407
434 - 25 = 409 plus 5 ingrowth = 414
live tree
84
414
12
85
86
87
(52/407)100 = 12.78
8
2
31
88
89
90
407
(29/370)100 = 7.84
21
91
92
93
94
95
29
96
97
370
Notes: Annual mortality checks were performed on this stand until the early 90’s.
98
99
2000
01