PANDEMIS HEPARANA (LEPIDOPTERA: TORTRICIDAE), A TORTRICID NEW TO NORTH AMERICA, ESTABLISHED IN BRITISH COLUMBIA

1979 ◽  
Vol 111 (8) ◽  
pp. 970-970 ◽  
Author(s):  
Miktat Doǧanlar ◽  
Bryan P. Beirne
Keyword(s):  
British Columbia ◽  
North America ◽  
Middle East ◽  
Fruit Tree ◽  
Deciduous Trees ◽  
Lower Fraser Valley ◽  
Pandemis Heparana ◽  
A Minor ◽  
Fraser Valley ◽  
Trees And Shrubs

Pandemis heparana Den. and Schiff. is common throughout most of Europe and the Middle East to Siberia, China, Korea, and Japan. It feeds on a wide variety of deciduous trees and shrubs. It is regarded as a minor fruit tree pest in some areas as it can damage flowers and fruit.Three males and four females from a larger number reared from 87 larvae collected in the Lower Fraser Valley, British Columbia, were identified as of this species by Dr. A. Mutuura, Biosystematics Research Institute, Agriculture Canada, Ottawa. It apparently has not been recorded previously from North America.

Identification of planktonic Mallomonadaceae and other Chrysophyceae from selected lakes in the lower Fraser Valley, British Columbia (Canada)

1984 ◽  
Vol 62 (3) ◽  
pp. 525-539 ◽  
Author(s):  
Deborah A. Donaldson ◽  
Janet R. Stein
Keyword(s):  
British Columbia ◽  
North America ◽  
New Records ◽  
The Family ◽  
Lower Fraser Valley ◽  
Fraser Valley

Identification of the Mallomonadaceae of selected lakes in British Columbia reveals 20 species of the genera Chromophysomonas, Chrysosphaerella, Mallomonas, Mallomonopsis, Paraphysomonas, and Synura. The following eight taxa in the family are new records for British Columbia (* indicates those new to North America): Mallomonas asmundiae, M. doignonii var. tenuicostis, M. papillosa, M. transsylvanica, Mallomonopsis ouradion*, Paraphysomonas vestita, Synura glabra, S. splendida*. Thirteen additional Chrysophyceae were also present, with the most diversity observed being in the three lakes studied extensively (Whonock, Como, Munday).

Life History and Behavior of the Bramble Leafhopper, Ribautiana tenerrima (H.-S.) (Homoptera: Cicadellidae)

1960 ◽  
Vol 92 (1) ◽  
pp. 10-20 ◽  
Author(s):  
J. Raine
Keyword(s):  
Life History ◽  
North America ◽  
Vancouver Island ◽  
Dry Season ◽  
Lower Fraser Valley ◽  
And Behavior ◽  
Fraser Valley

Since 1947, when the bramble leafhopper, Ribautiana tenerrima (H.-S.) (rubi Hardy, misella 13011.), was first reported in North America near Victoria, B.C., it has become a serious pest in cane fruit plantings on southern Vancouver Island and the lower Fraser Valley. Hoth nymphs and adults suck the sap from the leaves, producing a white stippling on the upper surfaces (Fig. 1). In a dry season a severe infestation causes many leaves to become curled and appear burned. The canes lack vigor and the size of the fruit is reduced. This is a report on a study of the life history and behavior of the species conducted at Victoria from 1953 to 1957.

scholarly journals Low levels of nitryl chloride at ground level: nocturnal nitrogen oxides in the Lower Fraser Valley of British Columbia

2018 ◽  
Vol 18 (9) ◽  
pp. 6293-6315 ◽  
Author(s):  
Hans D. Osthoff ◽  
Charles A. Odame-Ankrah ◽  
Youssef M. Taha ◽  
Travis W. Tokarek ◽  
Corinne L. Schiller ◽  
...  
Keyword(s):  
British Columbia ◽  
Nitrogen Oxides ◽  
Ground Level ◽  
Ambient Air ◽  
Data Set ◽  
Mixing Ratios ◽  
Nitryl Chloride ◽  
Short Period ◽  
Lower Fraser Valley ◽  
Fraser Valley

Abstract. The nocturnal nitrogen oxides, which include the nitrate radical (NO3), dinitrogen pentoxide (N2O5), and its uptake product on chloride containing aerosol, nitryl chloride (ClNO2), can have profound impacts on the lifetime of NOx (= NO + NO2), radical budgets, and next-day photochemical ozone (O3) production, yet their abundances and chemistry are only sparsely constrained by ambient air measurements. Here, we present a measurement data set collected at a routine monitoring site near the Abbotsford International Airport (YXX) located approximately 30 km from the Pacific Ocean in the Lower Fraser Valley (LFV) on the west coast of British Columbia. Measurements were made from 20 July to 4 August 2012 and included mixing ratios of ClNO2, N2O5, NO, NO2, total odd nitrogen (NOy), O3, photolysis frequencies, and size distribution and composition of non-refractory submicron aerosol (PM1). At night, O3 was rapidly and often completely removed by dry deposition and by titration with NO of anthropogenic origin and unsaturated biogenic hydrocarbons in a shallow nocturnal inversion surface layer. The low nocturnal O3 mixing ratios and presence of strong chemical sinks for NO3 limited the extent of nocturnal nitrogen oxide chemistry at ground level. Consequently, mixing ratios of N2O5 and ClNO2 were low (< 30 and < 100 parts-per-trillion by volume (pptv) and median nocturnal peak values of 7.8 and 7.9 pptv, respectively). Mixing ratios of ClNO2 frequently peaked 1–2 h after sunrise rationalized by more efficient formation of ClNO2 in the nocturnal residual layer aloft than at the surface and the breakup of the nocturnal boundary layer structure in the morning. When quantifiable, production of ClNO2 from N2O5 was efficient and likely occurred predominantly on unquantified supermicron-sized or refractory sea-salt-derived aerosol. After sunrise, production of Cl radicals from photolysis of ClNO2 was negligible compared to production of OH from the reaction of O(1D) + H2O except for a short period after sunrise.

The Spatiotemporal Response of Summertime Tropospheric Ozone to Changes in Local Precursor Emissions in the Lower Fraser Valley, British Columbia

2018 ◽  
Vol 56 (5) ◽  
pp. 303-321
Author(s):  
Bruce Ainslie ◽  
Nadya Moisseeva ◽  
Roxanne Vingarzan ◽  
Corinne Schiller ◽  
Douw Steyn ◽  
...  
Keyword(s):  
British Columbia ◽  
Tropospheric Ozone ◽  
Lower Fraser Valley ◽  
Spatiotemporal Response ◽  
Fraser Valley

AIR-BORNE POLLEN SURVEYS IN BRITISH COLUMBIA

1967 ◽  
Vol 47 (3) ◽  
pp. 251-261 ◽  
Author(s):  
I. J. Bassett ◽  
C. W. Crompton
Keyword(s):  
United States ◽  
British Columbia ◽  
North America ◽  
Late Summer ◽  
The United States ◽  
Early Spring ◽  
Causative Agents ◽  
Early Fall ◽  
Trees And Shrubs

Results from 17 pollen collecting stations in British Columbia indicate that air-borne pollen of ragweeds and their relatives, the principal causative agents of hay fever in North America, is practically absent throughout the province. Coniferous trees and shrubs such as pines, spruces, firs, cedars, Douglas fir, hemlocks and junipers produce the greater part of the air-borne pollen from March to early July. Pollen from alders, poplars, willows and birches is also prevalent in some areas in the early spring. The peak periods of grass pollen near the United States–Canadian border occur mainly in June and the early part of July, while further north they are about a month later. Of the four types of plantain pollen identified from the different collecting stations, English plantain was the most common, especially in the southwesterly part of the province. Pollen from the lambs’-quarters and amaranth families and wormwoods occurs mainly in the late summer and early fall and is more abundant in the dry interior than along the coast.

Core aeration of sand-based putting greens in the Lower Fraser Valley of British Columbia

2007 ◽  
Vol 87 (1) ◽  
pp. 103-111 ◽  
Author(s):  
P. Sorokovsky ◽  
M. Krzic ◽  
M D Novak
Keyword(s):  
British Columbia ◽  
Surface Area ◽  
Management Practices ◽  
Penetration Resistance ◽  
Water Infiltration ◽  
Putting Greens ◽  
Study Objective ◽  
Soil Penetration Resistance ◽  
Lower Fraser Valley ◽  
Fraser Valley

Core aeration, a management practice originally developed for soil-based putting greens, is still commonly used on sand-based greens. The study objective was to determine the effects of core aeration on soil properties of sand-based putting greens in the Lower Fraser Valley of British Columbia. The experiment was laid out as a randomized complete block design with three replications. The study treatments were regular management practices, including core aeration (CA) carried out in spring and late summer, and regular management practices, but no core aeration (NCA). Each core aeration event impacted 5% of the surface area. Treatments with and without core aeration had similar soil organic matter content, root weight density, and soil bulk density. The CA treatment was generally drier than NCA. Water infiltration was greater on CA than NCA, but only for 1 mo following core aeration. Core aeration generally reduced soil penetration resistance within the mat layer relative to treatment without this practice. On both treatments, soil penetration resistance consistently exceeded 4000 kPa below about 13 cm depth preventing deeper root growth. The limited benefits of the low-surface-area-impact core aeration on the maturing sand-based putting greens in a humid maritime climate suggest that this practice might not be worth doing (at a low surface area impact); however, additional, more detailed studies are needed to confirm this. Key words: Turf management, golf course management, soil penetration resistance, water infiltration

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