Area (ha) affected by bark beetles^a from 81/82 to 98/99, by region

Year

Cariboo

Kamloops

Nelson

P. George

P. Rupert

Vancouver

TOTALS

81/82^b

243 637

21 435

65 016

59 148

14 359

730

404 325

82/83^b

232 750

22 050

45 000

59 000

30 500

500

389 800

83/84^b

406 100

45 300

23 700

35 750

29 800

2 100

542 750

84/85^b

383 200

58 700

24 700

28 920

28 100

5 000

528 620

85/86^b

193 475

73 260

14 420

5 059

55 400

4 686

346 300

86/87^b

107 240

48 840

28 040

1 375

14 940

4 485

204 920

87/88^b

3 900

21 900

23 100

4 300

18 600

1 470

73 270

88/89^c

1 683

19 090

25 800

4 065

13 060

966

64 664

89/90^c

4 020

13 425

33 700

6 810

18 275

1 900

78 130

90/91^c

3 040

7 325

23 075

19 960

3 550

870

57 820

91/92^b,c

2 200

19 570

14 766

54 745

6 010

712

98 003

92/93^d

3 370

24 650

14 009

136 930

3 215

1 572

183 746

93/94^d

9 900

28 600

11 900

65 350

6 450

1 135

123 335

94/95^e

12 491

9 455

3 280

91 475

9 300

745

126 746

95/96^e,f

6 795

8 780

7 386

118 688

22 000

1 480

165 129

96/97^e

f

1 400

g

100 860

g

1 348

103 608^h

97/98^g

98/99

19 429^h

20 351^h

9 213^h

72 380^h

g

1564^h

122 937^h

1. Area of forests killed by bark beetles is estimated from aerial surveys done the previous year. Represents stands that were under attack the previous year.
2. Best available estimates. Accuracy varies, depending on the pest. Many more pests are endemic throughout most forests. Detailed measures of the intensity of infestation are not available.
3. Best available estimates of current annual losses. Accuracy varies, depending on the pest.
4. Best available estimates of current area affected. Although more insects and diseases are endemic, detailed measures of the intensity of infestations are not available.
5. Includes estimates of areas infested with mountain pine beetle, Douglas-fir beetle and spruce beetle.
6. The total area estimated to be infested by balsam bark beetle is an additional 128 000 hectares, province wide.
7. Data not available.
8. Data incomplete.

Data source: MoF annual reports.