Summary Report for the B.C. Ministry of Forests Nelson Forest Region

Transcription

1 Summary Report for the B.C. Ministry of Forests Nelson Forest Region For Invermere, Columbia, Arrow, Boundary, Kootenay Lake, and Cranbrook Forest Districts Aerial Overview Survey 2000 Conducted for: Conducted by: Art Stock, Forest Entomologist Ministry of Forests, Nelson Forest Region 518 Lake Street Nelson, BC V1L 4C6 Marnie Duthie-Holt Bugbusters Pest Management Inc. Box 1750 Prince George, BC V2L 4V7 October

2 Table of Contents TABLE OF CONTENTS... 2 LIST OF TABLES... 2 LIST OF FIGURES... 3 INTRODUCTION... 4 SUMMARY OF AERIAL OVERVIEW SURVEYS... 4 SURVEY RESULTS BY PEST SPECIES OR DAMAGE CODE... 5 ENTIRE NELSON FOREST REGION SUMMARY BARK BEETLES DEFOLIATORS DISEASES OTHER FOREST HEALTH FACTORS FOREST HEALTH AGENTS IN PROVINCIAL PARKS... 8 INDIVIDUAL FOREST DISTRICT SUMMARY BARK BEETLES DEFOLIATORS DISEASES OTHER FOREST HEALTH FACTORS List of Tables Table 1. Summary of Aerial Surveys conducted for the Nelson Forest Region (by Bugbusters Pest Management Inc., Summer 2000) Table 2. Summary of bark beetle pest agents by number of sites and hectares as recorded from aerial overview surveys in the Nelson Forest Region Table 3. Summary of defoliator pest agents by number of sites and hectares as recorded from aerial overview surveys in the Nelson Forest Region Table 4. Summary of disease pest agents by number of sites and hectares as recorded from aerial overview surveys in the Nelson Forest Region Table 5. Summary of other forest health pest agents by number of sites and hectares as recorded from aerial overview surveys in the Nelson Forest Region Table 6. Summary of all forest health pest agents in Provincial Parks by number of sites and hectares as recorded from aerial overview surveys in the Nelson Forest Region Table 7. Summary of bark beetle pest agents by number of sites and hectares by individual forest district (Nelson Region Aerial Overview Surveys 2000) Table 8. Summary of defoliator pest agents by number of sites and hectares by individual forest district (Nelson Region Aerial Overview Surveys 2000) Table 9. Summary of disease pest agents by number of sites and hectares by individual forest district (Nelson Region Aerial Overview Surveys 2000) Table 10. Summary of other forest health pest agents by number of sites and hectares by individual forest district (Nelson Region Aerial Overview Surveys 2000)

3 List of Figures Figure 1. IBM comparison of hectares infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and Figure 2. IBS comparison of hectares infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and Figure 3. IBB comparison of hectares infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and Note: IBB was not mapped consistently from year to year Figure 4. IBD comparison of hectares infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and Figure 5. IBM comparison of number of sites infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and Figure 6. IBS comparison of number of sites infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and Figure 7. IBB comparison of number of sites infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and Figure 8. IBD comparison of number of sites infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and

4 Introduction Bugbusters Pest Management Inc. conducted aerial overview flights for the Invermere, Columbia, Arrow, and Boundary Forest Districts within the Nelson Forest Region for the 2000 season. The Ministry staff alone flew Cranbrook Forest District and Kootenay Lake Forest District was flown by another consultant. Detailed aerial surveys were also conducted for the Arrow Forest District and these numbers have been included in this report. For the flights that were conducted by Bugbusters Pest Management Inc. surveyors accompanied Ministry of Forest staff on all aerial surveys. Marnie Duthie-Holt and Dave Boyle were the mapping surveyors. Flights were conducted between July 17 and August 8, There was no downtime due to weather over the course of the contract. Summary of Aerial Overview Surveys Table 1. Outlines the number of flight hours per district, surveyor, and date of survey. Table 1. Summary of Aerial Surveys conducted for the Nelson Forest Region (by Bugbusters Pest Management Inc., Summer 2000). Forest District Main City Surveyor Mapping hours # days* Dates Boundary Grand Forks Dave Jul-00 Arrow Castlegar Dave Jul-00 Castlegar Dave Jul-00 Columbia Revelstoke Dave Jul-00 Golden Marnie Aug-00 Invermere Invermere Marnie Jul-00 Invermere Marnie Jul-00 Invermere Marnie Jul-00 Total *Number of survey days is based on a day = 4 flight mapping hours. Pest codes were summarized in the following manner: Bark beetles IBM IBS IBD IBB IBW IBL Defoliators ID IDF IDL IDN IDU Disease Agents DSB Mountain pine beetles Spruce bark beetles Douglas-fir bark beetles Western Balsam bark beetles Western pine beetle Lodgepole pine beetle General defoliator Forest Tent Caterpillar Western Hemlock looper Birch leaf miner Satin Moth White pine blister rust 4

5 DRB DFH DFL Black stain Larch needle cast Pine needle cast Other Forest Health Factors NB Bear ND Drought NF Flooding NW Windthrow/ Blowdown AP Porcupine Survey Results By Pest Species or Damage Code Entire Nelson Forest Region Summary The following tables outline the summary of 2000 aerial overview surveys conducted for the entire Nelson Forest Region including Invermere, Columbia, Arrow, Boundary, Cranbrook, and Kootenay Lake Forest Districts. Arrow Forest District 2000 detailed aerial surveys results are also included in these numbers. 1.0 Bark Beetles Table 2. Summary of bark beetle pest agents by number of sites and hectares as recorded from aerial overview surveys in the Nelson Forest Region FHF Severity # of Sites Total Poly Area Total Spot Area Total # trees Total ha (ha) (ha) IBB L M S Total IBD L M S Total IBL L Total IBM L M S Total IBS L M S Total IBW S Total

6 2.0 Defoliators Table 3. Summary of defoliator pest agents by number of sites and hectares as recorded from aerial overview surveys in the Nelson Forest Region FHF Severity # of Sites Total Poly Area Total Spot Area Total # trees Total ha (ha) (ha) ID L M Total IDB S Total IDL L Total IDU L M Total IDF M S Total Note: No defoliators were recorded in Arrow Forest District detailed surveys. 3.0 Diseases Table 4. Summary of disease pest agents by number of sites and hectares as recorded from aerial overview surveys in the Nelson Forest Region FHF Severity # of Sites Total Poly Area Total Spot Area Total # trees Total ha (ha) (ha) DFL L M S Total DRB L S Total DSB L M S Total

7 4.0 Other Forest Health Factors Table 5. Summary of other forest health pest agents by number of sites and hectares as recorded from aerial overview surveys in the Nelson Forest Region FHF Severity # of Sites Total Poly Area Total Spot Area Total # trees Total ha (ha) (ha) AB L M S Total AP L S Total NB L S Total ND L S Total NF S Total NW L S Total

8 5.0 Forest Health Agents in Provincial Parks Table 6. Summary of all forest health pest agents in Provincial Parks by number of sites and hectares as recorded from aerial overview surveys in the Nelson Forest Region FHF Severity # of Sites Total Poly Area Total Spot Area Total # trees Total ha (ha) (ha) AP S Total DFL L M S Total DSB L S Total IBB L M S Total IBD M S Total IBM S Total ID L Total The following charts show the comparison of the amount of hectares and number of sites infested for IBM, IBS, IBD, and IBB bark beetle species for each of the forest districts in 1999 and

9 Hectares of attack 1500 IBM ha 1999 IBM ha DIN Invermere DCO Columbia DAR Arrow Forest District DBO Boundary DCB Cranbrook DKL Kootenay Lake Figure 1. IBM comparison of hectares infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and Hectares of attack 60 IBS ha 1999 IBS ha DIN Invermere DCO Columbia DAR Arrow Forest District DBO Boundary DCB Cranbrook DKL Kootenay Lake Figure 2. IBS comparison of hectares infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and

10 Hectares of attack IBB ha 1999 IBB ha DIN Invermere DCO Columbia DAR Arrow Forest District DBO Boundary DCB Cranbrook DKL Kootenay Lake Figure 3. IBB comparison of hectares infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and Note: IBB was not mapped consistently from year to year Hectares of attack IBD ha 1999 IBD ha DIN Invermere DCO Columbia DAR Arrow Forest District DBO Boundary DCB Cranbrook DKL Kootenay Lake Figure 4. IBD comparison of hectares infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and

11 Number of sites infested IBM # sites 1999 IBM # sites DIN Invermere DCO Columbia DAR Arrow Forest District DBO Boundary DCB Cranbrook DKL Kootenay Lake Figure 5. IBM comparison of number of sites infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and Number of sites infested 8 6 IBS # sites 1999 IBS # sites DIN Invermere DCO Columbia DAR Arrow Forest District DBO Boundary DCB Cranbrook DKL Kootenay Lake Figure 6. IBS comparison of number of sites infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and

12 Number of sites infested IBB # sites 1999 IBB # sites DIN Invermere DCO Columbia DAR Arrow Forest District DBO Boundary DCB Cranbrook DKL Kootenay Lake Figure 7. IBB comparison of number of sites infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and Number of sites infested IBD # sites 1999 IBD # sites DIN Invermere DCO Columbia DAR Arrow Forest District DBO Boundary DCB Cranbrook DKL Kootenay Lake Figure 8. IBD comparison of number of sites infested recorded from aerial overview surveys for each of the forest districts in the Nelson Region in 1999 and

13 Individual Forest District Summary The following tables outline the numbers of sites, total polygon and spot areas (hectares), total number of trees, and total area (hectares) by severity class for each individual forest district in the Nelson Forest Region for the 2000 aerial overview surveys. Arrow Forest District 2000 detailed aerial surveys are also included in these numbers. 1.0 Bark beetles Table 7. Summary of bark beetle pest agents by number of sites and hectares by individual forest district (Nelson Region Aerial Overview Surveys 2000). DISTRICT FHF Severity # of Sites Total Poly Area Total Spot area # of trees Total ha DAR IBB L (ha) M S Total IBM L M S Total IBS L M Total IBD L M S Total IBW S Total DBO IBB L M Total IBM L S Total IBD S Total DCO IBB L M S Total IBM L M S Total IBS L Total (ha) 13

14 IBD L M S Total DIN IBB L M S Total IBM L M S Total IBD L M S Total DKL IBB L M S Total IBM L M S Total IBS L Total IBD L M S Total IBL L Total DCR IBB L S Total IBM L M S Total IBS S Total IBD L M S Total

15 2.0 Defoliators Table 8. Summary of defoliator pest agents by number of sites and hectares by individual forest district (Nelson Region Aerial Overview Surveys 2000). DISTRICT FHF Severity # of Sites Total Poly Area Total Spot area # of trees Total ha (ha) (ha) DAR IDB S Total DBO IDB S Total DCO ID L Total IDL L Total IDU L M Total DKL ID L M Total DCB IDF M S Total

16 3.0 Diseases Table 9. Summary of disease pest agents by number of sites and hectares by individual forest district (Nelson Region Aerial Overview Surveys 2000). DISTRICT FHF Severity # of Sites Total Poly Area Total Spot area # of trees Total ha (ha) (ha) DAR DSB L S Total DBO DRB L S Total DSB L S DCO DSB S Total DIN DFL L M S Total DKL DSB L M S Total DCB DFL L M Total

17 4.0 Other Forest Health Factors Table 10. Summary of other forest health pest agents by number of sites and hectares by individual forest district (Nelson Region Aerial Overview Surveys 2000). DISTRICT FHF Severity # of Sites Total Poly Area Total Spot area # of trees Total ha (ha) (ha) DAR NW S Total DBO AB L Total ND L S Total DCO AP L S Total NB S Total NF S Total NW S Total DIN AP L S Total NB L Total NW L Total DKL AB L M S Total NB S Total NW S Total DCB NW S Total