REDISTRIBUTION AND GROWTH OF THE CASPIAN TERN POPULATION IN THE PACIFIC COAST REGION OF NORTH AMERICA, 1981–2000

The Condor ◽  
10.1650/7508 ◽  
2004 ◽  
Vol 106 (4) ◽  
pp. 777 ◽  
Author(s):  
Robert M. Suryan ◽  
David P. Craig ◽  
Daniel D. Roby ◽  
Nathan D. Chelgren ◽  
Ken Collis ◽  
...  
Keyword(s):  
North America ◽  
Pacific Coast ◽  
The Pacific ◽  
Caspian Tern ◽  
Coast Region

New Zealand exports: Pseudosphaeroma Chilton, 1909 (Isopoda: Sphaeromatidae), a Southern Hemisphere genus introduced to the Pacific coast of North America

Zootaxa ◽  
2008 ◽  
Vol 1908 (1) ◽  
pp. 51-56 ◽  
Author(s):  
NIEL L. BRUCE ◽  
REGINA WETZER
Keyword(s):  
New Zealand ◽  
North America ◽  
Southern Hemisphere ◽  
San Francisco ◽  
Coastal Waters ◽  
Pacific Coast ◽  
First Record ◽  
The Pacific ◽  
First Time ◽  
Coast Region

Collections made along the coast of California have revealed the presence of a species of Pseudosphaeroma Chilton, 1909, a genus common in New Zealand coastal waters. The genus is entirely Southern Hemisphere in distribution, and this record reports the introduction of a species of Pseudosphaeroma into the San Francisco and Central Coast region of California, the first reported occurrence of the genus as an invasive taxon, and the first record of the genus from the Northern Hemisphere. The genus is also recorded for the first time from the Galapagos and Argentina.

Late Pleistocene stratigraphy of south-central British Columbia

1978 ◽  
Vol 15 (6) ◽  
pp. 971-980 ◽  
Author(s):  
Robert J. Fulton ◽  
Geoffrey W. Smith
Keyword(s):  
British Columbia ◽  
North America ◽  
Great Lakes ◽  
Late Pleistocene ◽  
Pacific Coast ◽  
Coastal Regions ◽  
South Central ◽  
The Pacific ◽  
Valley Area ◽  
Coast Region

The late Pleistocene deposits of south-central British Columbia record two major glacial and two major nonglacial periods of deposition. The oldest recognized Pleistocene deposits, called Westwold Sediments, were deposited during a nonglacial interval more than 60 000 years ago. Little information is available on the climate of this period, but permafrost may have been present at one time during final stages of deposition of Westwold Sediments. The latter part of this nonglacial period is probably correlative with the early Wisconsin Substage of the Great Lakes – St. Lawrence Valley area. However, deposition of the Westwold Sediments may have begun during the Sangamon Interglacial.Okanagan Centre Drift is the name applied to sediments deposited during the glaciation that followed deposition of Westwold Sediments. Okanagan Centre Drift is known to be older than 43 800 years BP and probably is older than 51 000. It is considered to correlate with an early Wisconsin glacial period.Bessette Sediments were deposited during the last major nonglacial period, which in south-central British Columbia persisted from at least 43 800 years BP (possibly more than 51 000) to about 19 000 years BP. This episode corresponds to Olympia Interglaciation of the Pacific Coast region and the mid-Wisconsin Substage of the Great Lakes – St. Lawrence Valley area. During parts of Olympia Interglaciation the climate was probably as warm as the present-day climate in the interior of British Columbia. Information from coastal regions indicates that there may have been periods of cooler and moister climate.Kamloops Lake Drift was deposited during the last major glaciation of south-central British Columbia. Ice occupied lowland areas from approximately 19 000 to 10 000 years BP. This period corresponds approximately to the Fraser Glaciation of the Pacific Coast region and the late Wisconsin Substage of central and eastern parts of North America.

THE BEES OF ALBERTA.—I

1936 ◽  
Vol 68 (12) ◽  
pp. 274-277 ◽  
Author(s):  
T. D. A. Cockerell
Keyword(s):  
North America ◽  
Pacific Coast ◽  
University Of Alberta ◽  
The Pacific ◽  
The University ◽  
Coast Region

It is proposed to offer a series of papers, based primarily on the material collected by Professor E. H. Strickland of the University of Alberta at Edmonton.Chelynia nitida (Cresson). This genus of parasitic bees has over twenty species in North America, the majority from the Pacific Coast region. There are two closely allied species described from females, black with cream-coloured abdominal bands. For some years I have had in my collection a male from Tolland, Colorado, July 1915, at flowers of Frasera, collected by L. A. Kenoyer, determined by me as C. nitida (Cress). I now receive a very similar but distinct male from Professor E. H. Strickland, collected by O. Peck at Beaverlodge, Alberta, July 6, 1931. I conclude that this must be the genuine C. nitida, and the Tolland one the undescribed male of the related C. idahoensis Swenk.

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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