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SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA
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| Zeitschriftentitel: | The Forestry Chronicle |
|---|---|
| Personen und Körperschaften: | |
| In: | The Forestry Chronicle, 39, 1963, 2, S. 199-204 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Canadian Institute of Forestry
|
| Schlagwörter: |
| author_facet |
Harris, J. W. E. Harris, J. W. E. |
|---|---|
| author |
Harris, J. W. E. |
| spellingShingle |
Harris, J. W. E. The Forestry Chronicle SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA Forestry |
| author_sort |
harris, j. w. e. |
| spelling |
Harris, J. W. E. 0015-7546 1499-9315 Canadian Institute of Forestry Forestry http://dx.doi.org/10.5558/tfc39199-2 <jats:p> Methods of sampling the immature stages of the two-year-cycle spruce bud-worm, Choristoneura fumiferana (Clem.), were studied at Babine hake in west-central British Columbia; this paper deals with the egg stage. At high population levels there was no difference in the number of egg masses per square foot of foliage surface between hosts, study areas, direction or sample size. Significant differences existed between crown levels and trees. Samples from understory trees were not representative of the egg populations from overstory trees. An acceptable estimate of egg numbers may be obtained by sampling one 18-inch branch tip from the mid-crown portion of as many trees as possible. Significant differences between sample areas at low population levels indicate that more localities would have to be sampled to obtain a representative estimate of egg numbers when fewer insects are present. </jats:p> SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA The Forestry Chronicle |
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10.5558/tfc39199-2 |
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Online Free |
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Canadian Institute of Forestry, 1963 |
| imprint_str_mv |
Canadian Institute of Forestry, 1963 |
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0015-7546 1499-9315 |
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1963 |
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Canadian Institute of Forestry |
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| series |
The Forestry Chronicle |
| source_id |
49 |
| title |
SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA |
| title_unstemmed |
SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA |
| title_full |
SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA |
| title_fullStr |
SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA |
| title_full_unstemmed |
SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA |
| title_short |
SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA |
| title_sort |
sampling the egg stages of the two-year-cycle spruce budworm near babine lake, british columbia |
| topic |
Forestry |
| url |
http://dx.doi.org/10.5558/tfc39199-2 |
| publishDate |
1963 |
| physical |
199-204 |
| description |
<jats:p> Methods of sampling the immature stages of the two-year-cycle spruce bud-worm, Choristoneura fumiferana (Clem.), were studied at Babine hake in west-central British Columbia; this paper deals with the egg stage. At high population levels there was no difference in the number of egg masses per square foot of foliage surface between hosts, study areas, direction or sample size. Significant differences existed between crown levels and trees. Samples from understory trees were not representative of the egg populations from overstory trees. An acceptable estimate of egg numbers may be obtained by sampling one 18-inch branch tip from the mid-crown portion of as many trees as possible. Significant differences between sample areas at low population levels indicate that more localities would have to be sampled to obtain a representative estimate of egg numbers when fewer insects are present. </jats:p> |
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199 |
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The Forestry Chronicle |
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39 |
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| author | Harris, J. W. E. |
| author_facet | Harris, J. W. E., Harris, J. W. E. |
| author_sort | harris, j. w. e. |
| container_issue | 2 |
| container_start_page | 199 |
| container_title | The Forestry Chronicle |
| container_volume | 39 |
| description | <jats:p> Methods of sampling the immature stages of the two-year-cycle spruce bud-worm, Choristoneura fumiferana (Clem.), were studied at Babine hake in west-central British Columbia; this paper deals with the egg stage. At high population levels there was no difference in the number of egg masses per square foot of foliage surface between hosts, study areas, direction or sample size. Significant differences existed between crown levels and trees. Samples from understory trees were not representative of the egg populations from overstory trees. An acceptable estimate of egg numbers may be obtained by sampling one 18-inch branch tip from the mid-crown portion of as many trees as possible. Significant differences between sample areas at low population levels indicate that more localities would have to be sampled to obtain a representative estimate of egg numbers when fewer insects are present. </jats:p> |
| doi_str_mv | 10.5558/tfc39199-2 |
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| id | ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuNTU1OC90ZmMzOTE5OS0y |
| imprint | Canadian Institute of Forestry, 1963 |
| imprint_str_mv | Canadian Institute of Forestry, 1963 |
| institution | DE-D275, DE-Bn3, DE-Brt1, DE-Zwi2, DE-D161, DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229 |
| issn | 0015-7546, 1499-9315 |
| issn_str_mv | 0015-7546, 1499-9315 |
| language | English |
| last_indexed | 2024-03-01T12:42:30.598Z |
| match_str | harris1963samplingtheeggstagesofthetwoyearcyclesprucebudwormnearbabinelakebritishcolumbia |
| mega_collection | Canadian Institute of Forestry (CrossRef) |
| physical | 199-204 |
| publishDate | 1963 |
| publishDateSort | 1963 |
| publisher | Canadian Institute of Forestry |
| record_format | ai |
| recordtype | ai |
| series | The Forestry Chronicle |
| source_id | 49 |
| spelling | Harris, J. W. E. 0015-7546 1499-9315 Canadian Institute of Forestry Forestry http://dx.doi.org/10.5558/tfc39199-2 <jats:p> Methods of sampling the immature stages of the two-year-cycle spruce bud-worm, Choristoneura fumiferana (Clem.), were studied at Babine hake in west-central British Columbia; this paper deals with the egg stage. At high population levels there was no difference in the number of egg masses per square foot of foliage surface between hosts, study areas, direction or sample size. Significant differences existed between crown levels and trees. Samples from understory trees were not representative of the egg populations from overstory trees. An acceptable estimate of egg numbers may be obtained by sampling one 18-inch branch tip from the mid-crown portion of as many trees as possible. Significant differences between sample areas at low population levels indicate that more localities would have to be sampled to obtain a representative estimate of egg numbers when fewer insects are present. </jats:p> SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA The Forestry Chronicle |
| spellingShingle | Harris, J. W. E., The Forestry Chronicle, SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA, Forestry |
| title | SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA |
| title_full | SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA |
| title_fullStr | SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA |
| title_full_unstemmed | SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA |
| title_short | SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA |
| title_sort | sampling the egg stages of the two-year-cycle spruce budworm near babine lake, british columbia |
| title_unstemmed | SAMPLING THE EGG STAGES OF THE TWO-YEAR-CYCLE SPRUCE BUDWORM NEAR BABINE LAKE, BRITISH COLUMBIA |
| topic | Forestry |
| url | http://dx.doi.org/10.5558/tfc39199-2 |