HEMITHEA AESTIVARIA, A GEOMETRID NEW TO NORTH AMERICA, ESTABLISHED IN BRITISH COLUMBIA (LEPIDOPTERA: GEOMETRIDAE: GEOMETRINAE)

1979 ◽  
Vol 111 (10) ◽  
pp. 1121-1121 ◽  
Author(s):  
Miktat Doǧanlar ◽  
Bryan P. Beirne
Keyword(s):  
British Columbia ◽  
North America ◽  
Woody Plants ◽  
Herbaceous Plants ◽  
Eastern Asia ◽  
The Common ◽  
Research Institute

Hemithea aestivaria, “the common emerald” in Britain, is common throughout most of Europe and in Eastern Asia. The larva feeds on many herbaceous plants before hibernation and on a wide variety of woody plants in the spring.Forty of the distinctively-marked larvae were collected on cherry, apple, wild plum, and species of Rubus and Crataegus at Burnaby, New Westminister, and Langley, in British Columbia, between 1.IV.78 and 18.V.78. A sample reared produced a male that was identified by Dr. K. B. Bolte, Biosystematics Research Institute, Agriculture Canada, Ottawa, as of Hemithea aestivaria, a species and genus apparently not recorded previously from North America.

Dipteran Pests: Families Tipulidae and Chloropidae

2020 ◽  
pp. 299-316
Author(s):  
Patricia J. Vittum
Keyword(s):  
United States ◽  
British Columbia ◽  
North America ◽  
Northeastern United States ◽  
Limited Distribution ◽  
Crane Flies ◽  
The Family ◽  
Athletic Fields ◽  
The Common ◽  
Considerable Damage

This chapter describes two invasive crane fly species which are pests of turfgrass, particularly in the northwestern and northeastern United States, as well as southern British Columbia and the metropolitan Toronto area in Canada. The European crane fly and the common or marsh crane fly, order Diptera, family Tipulidae, subfamily Tipulinae, have elongated maxillary palpi that distinguish members of this subfamily from other subfamilies. Larvae of invasive crane flies are sometimes called leatherjackets, in part because the pupae are leathery in appearance. Invasive crane flies have a relatively limited distribution in North America, but can cause considerable damage on golf courses, lawns, athletic fields, and sod farms, as well as forage fields and hayfields. The chapter also looks at the frit fly, which belongs to the family Chloropidae.

Key to the Puparia of Common Dipterous Parasites of the Forest Tent Caterpillar, Malacosoma disstria Hbn., in Ontario

1961 ◽  
Vol 93 (6) ◽  
pp. 433-436 ◽  
Author(s):  
W. L. Sippell
Keyword(s):  
British Columbia ◽  
Cold Treatment ◽  
Malacosoma Disstria ◽  
Forest Tent Caterpillar ◽  
The Common ◽  
Tent Caterpillar ◽  
Research Institute

During a study of the parasites attacking the forest tent caterpillar, Malacosoma disstria Hbn., a ready means of identifying puparia of the common dipterous parasites proved necessary so that those individuals that failed to develop beyond the puparial stage in laboratory rearings might be identified in advance of lengthy cold treatment and incubation. The following key was therefore developed on the basis of the study of series of puparia associated with adults determined by the Entomology Research Institute. The key includes the ten most common dipterous parasites of the tent caterpillar in Ontario, seven of which have been included in a similar key to the parasites of Malacosoma spp. in British Columbia (Ross 1953). The terminology used in these two keys is similar, and is adapted from Green (1921).

CROESIA HOLMIANA (LEPIDOPTERA: TORTRICIDAE), A FRUIT TREE LEAFROLLER NEW TO NORTH AMERICA, ESTABLISHED IN BRITISH COLUMBIA

1978 ◽  
Vol 110 (6) ◽  
pp. 639-640 ◽  
Author(s):  
Miktat Doganlar ◽  
Bryan P. Beirne
Keyword(s):  
British Columbia ◽  
North America ◽  
Fruit Tree ◽  
European Species ◽  
Research Institute

Croesia holmiana (L.) was the most common of nine species of tortricids found in 1977 in a survey of the apple leafrollers of the Vancouver, British Columbia, district. It is an European species not recorded previously from North America. Specimens from British Columbia were identified by Dr. A. Mutuura, Biosystematics Research Institute, Canada Agriculture, Ottawa.

Taxonomy and nomenclature of rough fescues, Festuca altaica, F. campestris (F. scabrella var. major), and F. hallii, in Canada and the adjacent part of United States

1984 ◽  
Vol 62 (8) ◽  
pp. 1739-1749 ◽  
Author(s):  
Leon E. Pavlick ◽  
Jan Looman
Keyword(s):  
United States ◽  
British Columbia ◽  
North America ◽  
Canadian Cordillera ◽  
Eastern Asia ◽  
Eastern Canada ◽  
Adjacent Part ◽  
Gaspe Peninsula ◽  
Gaspé Peninsula ◽  
Prairie Provinces

Three species of rough fescues occur in Canada and the adjacent part of the U.S.A.: Festuca altaica, F. campestris (F. scabrella var. major), and F. halli. Festuca altaica, a wide-ranging species of eastern Asia and northern North America, extends southward in the Canadian Cordillera to about latitude 52° N and is disjunct in eastern Canada (northern Québec, Gaspé Peninsula, western Newfoundland, etc.). Festuca scabrella Torr. in Hook, is a synonym of the earlier published F. altaica Trin. in Ledeb. Rough fescues of southern British Columbia, the southern prairie provinces of Canada, and northwestern U.S.A. that have been called F. scabrella belong to F. campestris and F. hallii, a neglected species. A key to the three taxa and a map of their distribution is presented.

scholarly journals Analysis of aircraft and satellite measurements from the Intercontinental Chemical Transport Experiment (INTEX-B) to quantify long-range transport of East Asian sulfur to Canada

2008 ◽  
Vol 8 (11) ◽  
pp. 2999-3014 ◽  
Author(s):  
A. van Donkelaar ◽  
R. V. Martin ◽  
W. R. Leaitch ◽  
A. M. Macdonald ◽  
T. W. Walker ◽  
...  
Keyword(s):  
British Columbia ◽  
North America ◽  
Long Range ◽  
East Asian ◽  
Chemical Transport ◽  
Long Range Transport ◽  
Free Troposphere ◽  
Range Transport ◽  
Transport Experiment ◽  
Sulfur Emissions

Abstract. We interpret a suite of satellite, aircraft, and ground-based measurements over the North Pacific Ocean and western North America during April–May 2006 as part of the Intercontinental Chemical Transport Experiment Phase B (INTEX-B) campaign to understand the implications of long-range transport of East Asian emissions to North America. The Canadian component of INTEX-B included 33 vertical profiles from a Cessna 207 aircraft equipped with an aerosol mass spectrometer. Long-range transport of organic aerosols was insignificant, contrary to expectations. Measured sulfate plumes in the free troposphere over British Columbia exceeded 2 μg/m3. We update the global anthropogenic emission inventory in a chemical transport model (GEOS-Chem) and use it to interpret the observations. Aerosol Optical Depth (AOD) retrieved from two satellite instruments (MISR and MODIS) for 2000–2006 are analyzed with GEOS-Chem to estimate an annual growth in Chinese sulfur emissions of 6.2% and 9.6%, respectively. Analysis of aircraft sulfate measurements from the NASA DC-8 over the central Pacific, the NSF C-130 over the east Pacific and the Cessna over British Columbia indicates most Asian sulfate over the ocean is in the lower free troposphere (800–600 hPa), with a decrease in pressure toward land due to orographic effects. We calculate that 56% of the measured sulfate between 500–900 hPa over British Columbia is due to East Asian sources. We find evidence of a 72–85% increase in the relative contribution of East Asian sulfate to the total burden in spring off the northwest coast of the United States since 1985. Campaign-average simulations indicate anthropogenic East Asian sulfur emissions increase mean springtime sulfate in Western Canada at the surface by 0.31 μg/m3 (~30%) and account for 50% of the overall regional sulfate burden between 1 and 5 km. Mean measured daily surface sulfate concentrations taken in the Vancouver area increase by 0.32 μg/m3 per 10% increase in the simulated fraction of Asian sulfate, and suggest current East Asian emissions episodically degrade local air quality by more than 1.5 μg/m3.

Japewia Subaurifera, A New Lichen Genus and Species From North-West Europe and Western North America

1990 ◽  
Vol 22 (3) ◽  
pp. 205-212 ◽  
Author(s):  
T. Tønsberg
Keyword(s):  
British Columbia ◽  
North America ◽  
Western North America ◽  
Coniferous Trees ◽  
North West

AbstractThe genus Japewia Tønsb. is introduced to accommodate three species including J. subaurifera Muhr & Tønsb. sp. nov. based on material from Norway, Sweden, Finland, Scotland, Canada (British Columbia) and U.S.A. (Washington). This species is closely related to Lecidea tornoensis Nyl. but is distinguished in being sorediate and by the production of lobaric acid (accessory) and acetone-soluble pigments. It grows on bark of deciduous and coniferous trees. Lecidea carrollii Coppins & P. James and L. tornoensis Nyl. are transferred to Japewia.

The Lower Jurassic phosphorites of southeastern British Columbia and terrane accretion to western North America

1989 ◽  
Vol 26 (8) ◽  
pp. 1612-1616 ◽  
Author(s):  
T. P. Poulton ◽  
J. D. Aitken
Keyword(s):  
British Columbia ◽  
North America ◽  
Oceanic Crust ◽  
West Coast ◽  
Cold Water ◽  
Lower Jurassic ◽  
Depositional Model ◽  
Western North America ◽  
The West ◽  
Terrane Accretion

Sinemurian phosphorites in southeastern British Columbia and southwestern Alberta conform with the "West Coast type" phosphorite depositional model. The model indicates that they were deposited on or near the Early Jurassic western cratonic margin, next to a sea or trough from which cold water upwelled. This suggests that the allochthonous terrane Quesnellia lay well offshore in Sinemurian time. The sea separating Quesnellia from North America was partly floored by oceanic crust ("Eastern Terrane") and partly by a thick sequence of rifted, continental terrace wedge rocks comprising the Purcell Supergroup and overlying Paleozoic sequence. This sequence must have been depressed sufficiently that access of upwelling deep currents to the phosphorite depositional area was not impeded.

Summary of Coastal Geologic Evidence for past Great Earthquakes at the Cascadia Subduction Zone

1995 ◽  
Vol 11 (1) ◽  
pp. 1-18 ◽  
Author(s):  
Brian F. Atwater ◽  
Alan R. Nelson ◽  
John J. Clague ◽  
Gary A. Carver ◽  
David K. Yamaguchi ◽  
...  
Keyword(s):  
British Columbia ◽  
North America ◽  
Subduction Zone ◽  
Forest Soils ◽  
Pacific Coast ◽  
Cascadia Subduction Zone ◽  
Level Change ◽  
The Past ◽  
The Pacific ◽  
Juan De Fuca

Earthquakes in the past few thousand years have left signs of land-level change, tsunamis, and shaking along the Pacific coast at the Cascadia subduction zone. Sudden lowering of land accounts for many of the buried marsh and forest soils at estuaries between southern British Columbia and northern California. Sand layers on some of these soils imply that tsunamis were triggered by some of the events that lowered the land. Liquefaction features show that inland shaking accompanied sudden coastal subsidence at the Washington-Oregon border about 300 years ago. The combined evidence for subsidence, tsunamis, and shaking shows that earthquakes of magnitude 8 or larger have occurred on the boundary between the overriding North America plate and the downgoing Juan de Fuca and Gorda plates. Intervals between the earthquakes are poorly known because of uncertainties about the number and ages of the earthquakes. Current estimates for individual intervals at specific coastal sites range from a few centuries to about one thousand years.

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