First western Canadian records of Nebria brevicollis (Coleoptera: Carabidae) and establishment of populations in Coquitlam, British Columbia, Canada

2020 ◽  
pp. 1-7
Author(s):  
Robert R. McGregor ◽  
Henri Goulet ◽  
James R. LaBonte
Keyword(s):  
Invasive Species ◽  
British Columbia ◽  
Urban Forest ◽  
Pitfall Trap ◽  
Species Description ◽  
Forest Sites ◽  
Trap Catches

Abstract The first western Canadian records of the European carabid, Nebria brevicollis (Fabricius) (Coleoptera: Carabidae), are reported from Vancouver, Coquitlam, and Delta, British Columbia, Canada. A species description is provided to facilitate identification of this new invasive species. In addition, pitfall trap data are presented that demonstrate establishment of populations at four locations in Coquitlam. Trap catches were substantially higher at one anthropogenic meadow site than at three urban forest sites. Potential for further expansion of the range of N. brevicollis in British Columbia and beyond is discussed.

THE EFFECT OF SOD TYPE ON THE OCCURRENCE OF GROUND BEETLES (COLEOPTERA: CARABIDAE) IN A PEST MANAGEMENT APPLE ORCHARD

1984 ◽  
Vol 116 (2) ◽  
pp. 165-171 ◽  
Author(s):  
N. J. Holliday ◽  
E. A. C. Hagley
Keyword(s):  
Pest Management ◽  
Pitfall Trap ◽  
Common Species ◽  
Ground Beetles ◽  
Apple Orchard ◽  
Soil Samples ◽  
Soil Sampling ◽  
Pitfall Trapping ◽  
Before And After ◽  
Trap Catches

AbstractThe effects on carabids of natural, fescue, and rye sod types and of tillage were investigated in a pest management apple orchard. Carabids were sampled before and after the treatments by pitfall trapping and by two types of soil sampling. There were no significant effects of sod type on pitfall trap catches; however the abundance of all common species in soil samples was significantly affected by sod types. Usually in soil samples carabids were most abundant in natural sod and least abundant in tilled plots; numbers were intermediate in fescue and rye. Sod type did not affect structure or diversity of the carabid fauna.

scholarly journals Neoglacial history of Robson Glacier, British Columbia

2017 ◽  
Vol 54 (11) ◽  
pp. 1153-1164 ◽  
Author(s):  
B.H. Luckman ◽  
M.H. Masiokas ◽  
K. Nicolussi
Keyword(s):  
British Columbia ◽  
Little Ice Age ◽  
Ice Age ◽  
Tree Line ◽  
Canadian Rockies ◽  
The Holocene ◽  
Forest Sites ◽  
History Of ◽  
Subfossil Wood ◽  
Glacier Advance

As glaciers in the Canadian Rockies recede, glacier forefields continue to yield subfossil wood from sites overridden by these glaciers during the Holocene. Robson Glacier in British Columbia formerly extended below tree line, and recession over the last century has progressively revealed a number of buried forest sites that are providing one of the more complete records of glacier history in the Canadian Rockies during the latter half of the Holocene. The glacier was advancing ca. 5.5 km upvalley of the Little Ice Age terminus ca. 5.26 cal ka BP, at sites ca. 2 km upvalley ca. 4.02 cal ka BP and ca. 3.55 cal ka BP, and 0.5–1 km upvalley between 1140 and 1350 A.D. There is also limited evidence based on detrital wood of an additional period of glacier advance ca. 3.24 cal ka BP. This record is more similar to glacier histories further west in British Columbia than elsewhere in the Rockies and provides the first evidence for a post-Hypsithermal glacier advance at ca. 5.26 cal ka BP in the Rockies. The utilization of the wiggle-matching approach using multiple 14C dates from sample locations determined by dendrochronological analyses enabled the recognition of 14C outliers and an increase in the precision and accuracy of the dating of glacier advances.

scholarly journals Maintaining the Diversity of California’s Municipal Forests

2010 ◽  
Vol 36 (1) ◽  
pp. 18-27
Author(s):  
Robert Muller ◽  
Carol Bornstein
Keyword(s):  
Invasive Species ◽  
New Species ◽  
Experimental Approach ◽  
Urban Forest ◽  
Public Awareness ◽  
Management Plan ◽  
Forest Diversity ◽  
Street Tree ◽  
Forest Management Plan ◽  
Urban Forest Management

Policies to promote urban forest diversity were assessed in 49 California, U.S. municipalities through a short questionnaire, followed by evaluation of street tree inventories and approved planting lists. While the majority of respondents (82%) indicated maintaining species diversity was an objective in managing their municipal forest, fewer than half of those responding positively (48%) had codified the objective in an actual urban forest management plan. Protecting against invasive species was an objective for a minority of communities (24%). Street tree inventories, provided by 18 respondents, indicated a high existing diversity within the communities of the state of California (avg. 185 species per community; range 95–408). In communities where both inventories and approved planting lists could be compared directly, the number of approved species for future planting was 29% of the number of species in the existing inventory. This suggests that the future diversity of California’s urban forests may be at risk. In order to improve diversity of their municipal forests, it is suggested communities retain an experimental approach to evaluating new species, build productive collaborations with all stakeholders as well as other communities, and develop outreach opportunities to enhance public awareness of the multiple values of a diverse urban forest.

scholarly journals The Leech Haemopis lateromaculata (Hirudinea: Haemopidae): Its North America Distribution and Additional Notes on Species Description

2006 ◽  
Vol 120 (4) ◽  
pp. 443 ◽  
Author(s):  
Peter Hovingh
Keyword(s):  
United States ◽  
British Columbia ◽  
North America ◽  
Coastal Region ◽  
Reproductive Organs ◽  
Geographic Range ◽  
Geographical Region ◽  
Species Description ◽  
Pleistocene Refugia ◽  
Specific Variation

The geographic range of Haemopis lateromaculata Mathers 1963 (Hirudinea: Haemopidae) is extended across North America. Its distribution in the coastal region of Alaska and British Columbia suggests a coastal Pleistocene refugia separate from the populations in the lower United States and suggests that H. lateromaculata and the Eurasian H. sanguisuga Linnaeus 1758 are sister taxa. Support of the identification and geography is based on the anatomical positions of the reproductive organs in H. lateromaculata and H. marmorata Say 1824. The variations within these species are described, noting that no specific variation was confined to a geographical region.

The entomology of vineyards in Canada

2018 ◽  
Vol 150 (6) ◽  
pp. 697-715
Author(s):  
Charles Vincent ◽  
Tom Lowery ◽  
Jean-Philippe Parent
Keyword(s):  
Invasive Species ◽  
British Columbia ◽  
North America ◽  
New Brunswick ◽  
Pest Management ◽  
Insect Pests ◽  
Eastern Canada ◽  
Insect Fauna ◽  
The Subject ◽  
Low Activity

AbstractIn Canada, viticulture has been practiced since the arrival of European settlers. After a period of low activity due to the prohibition in North America, viticulture enjoyed a renaissance in the 1970s such that it became a rapidly growing industry in Canada. It is currently practiced mainly in five provinces,i.e., British Columbia, Ontario, Québec, Nova Scotia, and New Brunswick. In Eastern Canada, several species of wild vines (VitisLinnaeus; Vitaceae) grew naturally before cultivation of domesticated cultivars and these had their entomofauna. In contrast, no wild vines grew in British Columbia. As a consequence, the insect fauna varies according to the provinces and the regions and the agroclimatic conditions. Here we review the literature relevant to viticultural entomology in Canada and discuss the main grape insects. It is noteworthy that certain insect pests of grapes were the subject of the first issues ofThe Canadian Entomologist. Selected milestones are provided to document the evolution of research in grape entomology in the context of dynamic evolving viticultural and oenological industries. In recent years, the arrival of several invasive species challenged the sustainability of integrated pest management programmes.

TRAPPING EVALUATION OF BEETLE VECTORS OF BLACK STAIN ROOT DISEASE IN DOUGLAS FIR

1990 ◽  
Vol 122 (3) ◽  
pp. 459-468 ◽  
Author(s):  
William D. Bedard ◽  
George T. Ferrell ◽  
Mark C. Whitmore ◽  
Allen S. Robertson
Keyword(s):  
Linear Models ◽  
Ground Cover ◽  
Pitfall Trap ◽  
Douglas Fir ◽  
Root Disease ◽  
Trap Catch ◽  
Pitfall Trapping ◽  
Emergence Traps ◽  
Population Indices ◽  
Trap Catches

AbstractThe performance of unbaited emergence traps and attractant-baited pitfall and flight traps was compared on the basis of suitability to produce population indices for two beetles, Steremnius carinatus (Boheman) and Hylastes nigrinus (Mannerheim), colonizing roots of Douglas fir in northern California. These beetles transmit Ceratocystis wageneri Goheen and Cobb, the fungus causing black stain root disease in Douglas fir. Trap sites were near stumps along transect lines through recently logged areas. Pitfall traps were judged the most promising for both species based on their relatively high catches and low expense. Although catch by emergence traps was low for both species, they appeared to catch the majority of S. carinatus. For both species, pitfall trap catches varied with date, study area, trapping line within study area, and stump within line. A number of variables, such as diameter of stump or type of ground cover, were significantly correlated with trap catch, and made significant contributions to linear models with catch as the dependent variable. Differences between study areas in the effect of variables on catch, and the possibility that pitfall trapping is subject to artifacts, suggested that the results of pitfall trapping need to be carefully scrutinized if they are to be used as a population index.

Fate of 15N-labelled fertilizer applied on snow at two forest sites in British Columbia

1990 ◽  
Vol 20 (10) ◽  
pp. 1583-1592 ◽  
Author(s):  
Caroline M. Preston ◽  
Valin G. Marshall ◽  
Kevin McCullough ◽  
Donald J. Mead
Keyword(s):  
British Columbia ◽  
Direct Consequence ◽  
Growing Season ◽  
Organic N ◽  
Green Mountain ◽  
Tree Biomass ◽  
Coastal Site ◽  
N Losses ◽  
Total Recovery ◽  
Forest Sites

Fertilizer was applied on snow in January 1981 at 100 kg N•ha−1 as [15N]urea, 15NH4NO3, and NH415NO3 to 11-year-old lodgepole pine (Pinuscontorta Dougl. var. latifolia Engelm.) at Spillimacheen in the British Columbia interior and as [15N]urea (200 kg N•ha−1) to 13-year-old Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) at Green Mountain, a coastal site in British Columbia. Recovery of labelled N after one growing season was determined in soil and biomass at both sites, and it was also monitored during the growing season in snow and soil at Spillimacheen. At Green Mountain, 5.5% of urea N was recovered in tree biomass, 10.8% in understory, and 33.4% in soil organic N (total recovery 49.7%). Leaching may have contributed to N losses at Green Mountain, but was probably not a direct consequence of the application on snow. At Spillimacheen, total recovery of [15N]urea was 93.3%, with 10.1% in tree biomass, 2.4% in understory, and 80.8% in soil. For 15NH4NO3, recoveries were 5.3% in tree biomass, 2.9% in understory, and 87.0% in soil, for a total of 95.2%. For NH415NO3, recoveries were 1.9% in tree biomass, 3.4% in understory, and 39.1% in soil, for a total of 44.4%. At Spillimacheen, the performance of 15NH4NO3 was comparable to that of urea in tree uptake and soil retention. There were large losses with the NH415NO3 source, however, most likely due to leaching and denitrification during snowmelt. For this reason, fertilization with nitrate on snow is not recommended because of nitrate's susceptibility to leaching, but urea and ammonium sources may be applied under these conditions.

Sign in / Sign up

Export Citation Format

Share Document