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Forest Health Conditions1999 Aerial Overview Survey Summary
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Disturbance Type |
VFR |
CFR |
KFR |
PRFR |
PGFR |
NFR |
Provincial |
Hectares affected (all severity classes) |
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| Bark Beetles | VFR |
CFR |
KFR |
PRFR |
PGFR |
NFR |
Provincial |
IBM=Mountain Pine Beetle |
16,779 |
32,275 |
28,467 |
49,069 |
31,541 |
6,436 |
164,567 |
IBS=Spruce Beetle |
454 |
2,933 |
85 |
619 |
46,335 |
157 |
50,582 |
IBB=Western Balsam Bark Beetle |
2,448 |
19,237 |
14,248 |
264,523 |
304,393 |
2,557 |
607,406 |
IBD=Douglas-fir Beetle |
41 |
769 |
266 |
0 |
591 |
1,056 |
2,723 |
IBI=Engraver Beetles |
0 |
456 |
0 |
0 |
0 |
0 |
456 |
IBW=Western Pine Beetle |
0 |
0 |
311 |
0 |
0 |
23 |
334 |
Total All BB= |
19,722 |
55,670 |
41,358 |
314,211 |
382,860 |
10,228 |
826,068 |
| Defoliators | VFR |
CFR |
KFR |
PRFR |
PGFR |
NFR |
Provincial |
ID=Defoliators |
0 |
627 |
0 |
0 |
265 |
0 |
892 |
IDH=Western Blackheaded Budworm |
61,219 |
0 |
0 |
0 |
0 |
0 |
61,219 |
IDB=2-Year Budworm |
0 |
18,071 |
0 |
2,807 |
795,041 |
0 |
815,919 |
IDE=Spruce Budworm |
0 |
0 |
0 |
17,730 |
1,265,965 |
0 |
1,283,695 |
IDL=Western Hemlock Looper |
0 |
0 |
0 |
0 |
2,426 |
0 |
2,426 |
IDS=Conifer Sawflies |
0 |
0 |
0 |
0 |
1,418 |
0 |
1,418 |
IDK=Northern Tent Caterpillar |
0 |
0 |
0 |
331 |
0 |
0 |
331 |
IDF=Forest Tent Caterpillar |
0 |
702 |
0 |
0 |
0 |
0 |
702 |
IDW=Western Spruce Budworm |
0 |
930 |
223 |
0 |
0 |
0 |
1,152 |
IDN=Birch Leaf Miner |
0 |
0 |
0 |
0 |
0 |
12 |
12 |
IDU=Satin Moth |
0 |
0 |
320 |
0 |
0 |
525 |
845 |
IAS=Green Spruce Aphid |
0 |
0 |
0 |
2,074 |
0 |
0 |
2,074 |
Total Defoliators= |
61,219 |
20,330 |
543 |
22,942 |
2,065,115 |
537 |
2,170,686 |
| Other | VFR |
CFR |
KFR |
PRFR |
PGFR |
NFR |
Provincial |
NB=Fire |
0 |
0 |
0 |
0 |
6,691 |
16 |
6,707 |
NW=Windthrow |
0 |
108 |
1,697 |
0 |
602 |
2,787 |
5,193 |
ND=Drought |
0 |
0 |
82 |
0 |
0 |
492 |
574 |
NF=Flooding |
979 |
556 |
9,261 |
0 |
0 |
69 |
10,865 |
NGK=Shoot/Bud Frost Kill |
0 |
0 |
91 |
0 |
0 |
0 |
91 |
Total Abiotics= |
979 |
664 |
11,130 |
0 |
7,293 |
3,363 |
23,430 |
| Diseases | VFR |
CFR |
KFR |
PRFR |
PGFR |
NFR |
Provincial |
DFL=Pine Needle Cast |
0 |
138 |
0 |
0 |
0 |
0 |
138 |
DRA=Armillaria Root Disease |
0 |
0 |
265 |
0 |
0 |
0 |
265 |
DMP=Lodgepole Pine Dwarf Mistletoe |
0 |
0 |
0 |
0 |
2 |
0 |
2 |
DSB=White Pine Blister Rust |
0 |
0 |
0 |
0 |
0 |
42 |
42 |
DFH=Larch Needle Cast |
0 |
0 |
0 |
0 |
0 |
33 |
33 |
Total Diseases= |
0 |
138 |
265 |
0 |
2 |
74 |
479 |
| Animals | VFR |
CFR |
KFR |
PRFR |
PGFR |
NFR |
Provincial |
AB=Bear |
0 |
0 |
0 |
0 |
0 |
141 |
141 |
AP=Porcupine |
0 |
0 |
1 |
0 |
2 |
0 |
3 |
AD=Deer |
0 |
0 |
2 |
0 |
0 |
0 |
2 |
Total Animals= |
0 |
0 |
7 |
0 |
0 |
141 |
147 |
Total Other= |
979 |
802 |
11,404 |
0 |
7,294 |
3,579 |
24,058 |
VFR |
CFR |
KFR |
PRFR |
PGFR |
NFR |
Provincial |
|
Total Region = |
81,921 |
76,802 |
53,305 |
337,153 |
2,455,270 |
14,344 |
3,018,793 |
(1) - Diseases other than foliage diseases are very difficult to accurately map using aerial overview style surveys. The totals presented here are not an accurate depiction of dwarf mistletoe and root disease incidence in the province. More accurate data is obtained using ground surveys.
(2) - Two-year cycle budworm in most of north-central B.C. is considered to be on its "on" cycle in 1999 and has caused extensive defoliation. However, it is "off-cycle" in the Robson Valley District, Prince George Forest Region for unknown reasons.
Aerial overview survey methods (FIDS-type) were used for the majority of the provincial coverage. Other than three districts in the Vancouver Forest Region (Sunshine Coast, South Island, Campbell River) that were not flown due to a known lack of activity, the remaining coverage was supplied using operational data from parts of the following forest districts: Cariboo Forest Region, Ft. St. James, Prince George, Vanderhoof, Mackenzie, Ft. Nelson, Cranbrook, Bulkley, Lakes, Morice, Kootenay Lake, and Arrow.
Back to the 1999 Overview | 1999 Summary Table | 1999 Maps | Overview Survey Home Page
October 28, 2005
The contact for this web page is: tim.ebata@gov.bc.ca
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