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d
d
d
d0 2 4 6
Moisture IndexAE/PE: 0.85-1.0
WET
0 2 4 6
Moisture IndexAE/PE: 0.73-0.85
0 2 4 6
Moisture IndexAE/PE: 0.55-0.73
-30
-10
10
-20
0
20
30
0 2 4 6
Tem
pera
ture
of C
olde
st M
onth
( ˚C
)
Moisture IndexAE/PE: < 0.55
DRY
Pinus albicaulis
0 2 4 6
Moisture IndexAE/PE: 0.85-1.0
WET
0 2 4 6
Moisture IndexAE/PE: 0.73-0.85
0 2 4 6
Moisture IndexAE/PE: 0.55-0.73
-30
-10
10
-20
0
20
30
0 2 4 6
Tem
pera
ture
of C
olde
st M
onth
( ˚C
)
Growing Degree Days on 5˚C Base X 1000
Moisture IndexAE/PE: < 0.55
DRY
Pinus banksiana
Growing Degree Days on 5˚C Base X 1000
Growing Degree Days on 5˚C Base X 1000
0 2 4 6
Moisture IndexAE/PE: 0.85-1.0
WET
0 2 4 6
Moisture IndexAE/PE: 0.73-0.85
0 2 4 6
Moisture IndexAE/PE: 0.55-0.73
-30
-10
10
-20
0
20
30
0 2 4 6
Tem
pera
ture
of C
olde
st M
onth
( ˚C
)
Growing Degree Days on 5˚C Base X 1000
Moisture IndexAE/PE: < 0.55
DRY
Pinus edulis
0 2 4 6
Moisture IndexAE/PE: 0.85-1.0
WET
0 2 4 6
Moisture IndexAE/PE: 0.73-0.85
0 2 4 6
Moisture IndexAE/PE: 0.55-0.73
-30
-10
10
-20
0
20
30
0 2 4 6
Tem
pera
ture
of C
olde
st M
onth
( ˚C
)
Moisture IndexAE/PE: < 0.55
DRY
Pinus clausa
n = 582
n = 87
n = 364
n = 4670
Figure 18. Comparison of plots of the presence or absence for the taxon relative to four quartiles of AE/PE (mean actual evaporation divided by potential evaporation; driest on the left, wettest on the right) and within each quartile by MTCO (mean temperature of the coldest month) versus GDD5 (mean growing-degree days [on a 5-°C base]) for four species of Pinus (box d on fig. 12). °C, degrees Celsius.USGS Prof. Pap. 1650–G
