CERATOZETIDAE (ACARI: ORIBATIDA) OF ARBOREAL HABITATS

2000 ◽  
Vol 132 (2) ◽  
pp. 153-182 ◽  
Author(s):  
Valerie M. Behan-Pelletier
Keyword(s):  
North America ◽  
Montane Forest ◽  
Oribatid Mites ◽  
Western Canada ◽  
Temperate Rainforest ◽  
Tabular Format

AbstractSix species of oribatid mites (Acari: Ceratozetidae) in six genera were recorded from a variety of arboreal habitats in western Canada, including the canopy of temperate rainforest, montane forest, and the leaves of shrubs. Four of these species are new to science and are described: Sphaerozetes winchesterisp.nov., on the basis of adults; and Dentizetes ledensissp.nov., Melanozetes crossleyisp.nov., and Neogymnobates marilynaesp.nov., on the basis of adults and immatures. Jugatala tuberosa Ewing is redescribed from both adults and immatures, a new observation being that adults have seven pairs of notogastral porose areas. The placement of the genus Jugatala Ewing in Ceratozetidae is confirmed. Latilamellobates baloghi (Mahunka) is newly recorded from North America, and the taxonomy of the genus is discussed. The major differences among these six species are presented in tabular format.

Mycobatidae (Acari: Oribatida) of Pacific Northwest canopy habitats

2001 ◽  
Vol 133 (6) ◽  
pp. 755-775 ◽  
Author(s):  
Valerie M. Behan-Pelletier ◽  
Barbara Eamer ◽  
Marilyn Clayton
Keyword(s):  
New Species ◽  
North America ◽  
Pacific Northwest ◽  
Montane Forest ◽  
Oribatid Mites ◽  
Temperate Rainforest ◽  
The Pacific ◽  
Three New Species

AbstractThree new species of oribatid mites in two genera of Mycobatidae are recorded from canopy habitats of coniferous temperate rainforest and montane forest in the Pacific Northwest of North America. These species, Mycobates acuspidatussp.nov., M. corticeussp.nov., and Zachvatkinibates epiphytossp.nov., are described on the basis of adults and immatures. The previous key for adult Mycobates species of America north of Mexico is modified to include these new species, and a key for adults is given for the three species of Zachvatkinibates now known from North America.

The Caragana Aphid, Acyrthosiphon caraganae (Cholod.) in Western Canada, and its Separation from the Pea Aphid

1962 ◽  
Vol 94 (10) ◽  
pp. 1075-1077 ◽  
Author(s):  
A. G. Robinson ◽  
G. A. Bradley
Keyword(s):  
British Columbia ◽  
North America ◽  
Chemical Control ◽  
Pea Aphid ◽  
Annual Reports ◽  
Western Canada ◽  
Forest Insect ◽  
Disease Survey ◽  
Caragana Arborescens

Except for occasional references in the Annual Reports of the Forest Insect and Disease Survey of infestations of an aphid on caragana (Caragana arborescens Lam.) in Western Canada and a note on chemical control (Bradley, 1952), there is no published record known to the authors of the occurrence of the caragana aphid, Acyrthosiphon caraganae (Cholod.), in North America. MacNay (1953) summarized reports that severe infesrations of aphids, “probably mainly the caragana aphid”, occurred on caragana in 1952 in the East Kootenays of British Columbia, and at several places in Alberta and Saskatchewan. At some localities 100 per cent defoliation was reported.

Bioclimatic assessment of abiotic factors affecting relative abundance and distribution of wheat stem sawfly (Hymenoptera: Cephidae) in western Canada

2018 ◽  
Vol 151 (1) ◽  
pp. 16-33
Author(s):  
Owen Olfert ◽  
Ross M. Weiss ◽  
Haley Catton ◽  
Héctor Cárcamo ◽  
Scott Meers
Keyword(s):  
North America ◽  
Geographic Distribution ◽  
Relative Abundance ◽  
General Circulation ◽  
General Circulation Models ◽  
Simulation Software ◽  
Economic Losses ◽  
Western Canada ◽  
Wheat Stem Sawfly ◽  
Ecoclimatic Index

AbstractWheat stem sawfly, Cephus cinctus Norton (Hymenoptera: Cephidae), indigenous to North America, quickly adapted from host native grasses to wheat crops (Triticum Linnaeus (Poaceae)) with expansion of agriculture on the Great Plains of North America. Bioclimatic simulation tools, such as Climex, predict the potential geographic distribution and establishment of insects in ecosystems, based on climate. The ecoclimatic index, a measure of ecological suitability, integrates potential population growth with stresses to produce estimates of relative abundance. This simulation software was used to develop a bioclimate model for C. cinctus in western Canada. Results fostered a better understanding of how C. cinctus responded to selected climate variables. Two general circulation models were then applied to assess the response of C. cinctus populations to future climate. Relative to current climate, predicted changes in C. cinctus distribution and relative abundance were greatest for 2030, with a small further increase for 2070. Across the Prairies and Boreal Plains Ecozones, changes in ecoclimatic index were greater than in geographic distribution. Both general circulation models indicated most of this area would be categorised as very favourable. This suggests that the potential for pest populations could expand into areas that do not currently experience economic losses associated with C. cinctus.

An Early Cretaceous (Berriasian) fossil-bearing locality from the Rocky Mountains of Alberta, yielding the oldest dinosaur skeletal remains from western Canada

2020 ◽  
Vol 57 (4) ◽  
pp. 542-552 ◽  
Author(s):  
Ramon S. Nagesan ◽  
James A. Campbell ◽  
Jason D. Pardo ◽  
Kendra I. Lennie ◽  
Matthew J. Vavrek ◽  
...  
Keyword(s):  
North America ◽  
Early Cretaceous ◽  
Depositional Environment ◽  
Upper Cretaceous ◽  
Upper Jurassic ◽  
High Energy ◽  
Western Canada ◽  
Western North America ◽  
Terrestrial Vertebrate ◽  
Overlying Strata

Western North America preserves iconic dinosaur faunas from the Upper Jurassic and Upper Cretaceous, but this record is interrupted by an approximately 20 Myr gap with essentially no terrestrial vertebrate fossil localities. This poorly sampled interval is nonetheless important because it is thought to include a possible mass extinction, the origin of orogenic controls on dinosaur spatial distribution, and the origin of important Upper Cretaceous dinosaur taxa. Therefore, dinosaur-bearing rocks from this interval are of particular interest to vertebrate palaeontologists. In this study, we report on one such locality from Highwood Pass, Alberta. This locality has yielded a multitaxic assemblage, with the most diagnostic material identified so far including ankylosaurian osteoderms and a turtle plastron element. The fossil horizon lies within the upper part of the Pocaterra Creek Member of the Cadomin Formation (Blairmore Group). The fossils are assigned as Berriasian (earliest Cretaceous) in age, based on previous palynomorph analyses of the Pocaterra Creek Member and underlying and overlying strata. The fossils lie within numerous cross-bedded sandstone beds separated by pebble lenses. These sediments are indicative of a relatively high-energy depositional environment, and the distribution of these fossils over multiple beds indicates that they accumulated over multiple events, possibly flash floods. The fossils exhibit a range of surface weathering, having intact to heavily weathered cortices. The presence of definitive dinosaur material from near the Jurassic–Cretaceous boundary of Alberta establishes the oldest record of dinosaur body fossils in western Canada and provides a unique opportunity to study the Early Cretaceous dinosaur faunas of western North America.

Notes on Polychaeta from the East Coast of Vancouver Island and from Adjacent Waters, with a Description of a New Species of Aricidea

1956 ◽  
Vol 13 (4) ◽  
pp. 541-546 ◽  
Author(s):  
E. Berkeley ◽  
C. Berkeley
Keyword(s):  
New Species ◽  
North America ◽  
East Coast ◽  
Vancouver Island ◽  
Western Canada ◽  
Western North America ◽  
A New Species

Records are given of two species and a variety new to western Canada and notes on three other species already known from the region. A new species, Aricidea lopezi, and four species new to western North America, are described from the neighbourhood of Friday Harbour, Washington.

Oldest known Esox (Pisces: Esocidae), part of a new Paleocene teleost fauna from western Canada

1980 ◽  
Vol 17 (3) ◽  
pp. 307-312 ◽  
Author(s):  
Mark V. H. Wilson
Keyword(s):  
North America ◽  
Western Canada ◽  
Body Form

Paleocene freshwater teleostean fishes from the Paskapoo and Ravenscrag Formations of Alberta and Saskatchewan, dated as Tiffanian or about 62 Ma old, include pike (Esox) remains twice as old as any previously known. Esox tiemani sp. nov. is an elongate, narrow-snouted pike, indicating that this body form may be primitive for some Recent pike species, and casting doubt on hypotheses of geologically more recent dispersal of pike into North America from Eurasia.The pike remains occur in the Paskapoo Formation with a teleost fauna having Eocene affinities and including osteoglossids, hiodontids, gonorynchids, cyprinoids, percopsids, and asineopids, none of which has previously been recorded from the Paleocene of North America.

Additions to the Polychaete Fauna of Canada, with Comments on Some Older Records

1954 ◽  
Vol 11 (4) ◽  
pp. 454-471 ◽  
Author(s):  
E. Berkeley ◽  
C. Berkeley
Keyword(s):  
New Species ◽  
North America ◽  
Pacific Coast ◽  
Western Canada ◽  
New Genera ◽  
Eastern Canada ◽  
New Variety ◽  
The Pacific

Descriptions are given of the new genera Neopygospio (type N. laminifera, nov.) and Novobranchus (type N. pacificus, nov.); of the new species Nereis (Eunereis) wailesi, Spio butleri, Neopygospio laminifera, Novobranchus pacificus; and of the new variety pacificus of Distylia volutacornis (Montagu). All are from the Pacific coast of Canada. Synonymy is proposed of Lepidonotus caelorus Moore with L. squamatus (Linné), and of Goniada eximia Ehlers with Ophioglycera gigantea Verrill. In addition to the new species and variety, records of three species new to western Canada are presented, and notes on others. Thirteen species and a variety new to eastern Canada are recorded, one of them new to North America.

The biology of Canadian weeds. 128. Leucanthemum vulgare Lam.

2004 ◽  
Vol 84 (1) ◽  
pp. 343-363 ◽  
Author(s):  
David R. Clements ◽  
Dan E. Cole ◽  
Jane King ◽  
Alec McClay
Keyword(s):  
British Columbia ◽  
North America ◽  
Yukon Territory ◽  
Perennial Herb ◽  
Old Fields ◽  
Western Canada ◽  
Far North ◽  
Pasture Quality ◽  
Ray Florets ◽  
Noxious Weed

Leucanthemum vulgare Lam. (Asteraceae), known as ox-eye daisy, is a familiar perennial herb with white ray florets and yellow disc florets. It commonly inhabits roadside ver ges, pastures and old fields from Newfoundland to British Columbia, and also as far north as the Yukon Territory. Introduced from Europe, L. vulgare was well established in North America by 1800. The Canadian distribution of L. vulgare has expanded in many areas recently, particularly in western Canada. It can form dense populations that may reduce diversity of natural vegetation or pasture quality, and also serves as a host and reservoir for several species of polyphagous gall-forming Meloidogyne nematodes that feed on crops. It is considered a noxious weed under provincial legislation in Quebec, Manitoba, Alberta and British Columbia, as well as under the Canada Seeds Act. Control efforts are sometimes complicated by difficulties in distinguishing ox-eye daisy from some forms of the commercially available Shasta daisy ( L. × superbum).

scholarly journals Climate change implications in the northern coastal temperate rainforest of North America

2015 ◽  
Vol 130 (2) ◽  
pp. 155-170 ◽  
Author(s):  
Colin S. Shanley ◽  
Sanjay Pyare ◽  
Michael I. Goldstein ◽  
Paul B. Alaback ◽  
David M. Albert ◽  
...  
Keyword(s):  
Climate Change ◽  
North America ◽  
Temperate Rainforest
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