FATE OF PETROLEUM HYDROCARBONS IN MARINE ZOOPLANKTON

1975 ◽  
Vol 1975 (1) ◽  
pp. 549-553 ◽  
Author(s):  
Richard F. Lee
Keyword(s):  
British Columbia ◽  
Petroleum Hydrocarbons ◽  
The Arctic ◽  
Temperate Water ◽  
Marine Zooplankton ◽  
Polar Metabolites ◽  
Calanus Hyperboreus

ABSTRACT Several groups of zooplankton from the coasts of California, British Columbia, and in the Arctic, including copepods, euphausiids, amphipods, crab zoea, ctenophores, and jellyfish rapidly took up 3H-benzpyrene, 14C-benzpyrene, 3H-methylcholanthrene, and 14Cnaphthalene from seawater solution. These hydrocarbons were metabolized to various hydroxylated and more polar metabolites by crustaceans but not by ctenophores or jellyfish. Up to 22 × 0−4 µg of benzpyrene was ingested by the temperate water copepod Calanus plumchrus, and transfer of this copepod to fresh seawater resulted in the discharge of most benzpyrene with less than 1 × 10−5 µg remaining after 17 days. When depuration was continued beyond 17 days, no further hydrocarbon loss was observed. Calanus hyperboreus from the Arctic took up to 11 × 10−4 µg of 3H-benzpyrene and a 28-day depuration experiment still showed the presence of benzpyrene in the copepod although again less than 1 × 10−5 µg.

Reproduction of the Arctic copepod Calanus hyperboreus in the Greenland Sea-field and laboratory observations

Polar Biology ◽  
1996 ◽  
Vol 16 (3) ◽  
pp. 209-219 ◽  
Author(s):  
Hans-Jürgen Hirche ◽  
Barbara Niehoff
Keyword(s):  
The Arctic ◽  
Greenland Sea ◽  
Calanus Hyperboreus

Bacterial populations associated with the Arctic amphipod Boeckosimus affinis

1982 ◽  
Vol 28 (1) ◽  
pp. 92-99 ◽  
Author(s):  
R. M. Atlas ◽  
M. Busdosh ◽  
E. J. Krichevsky ◽  
T. Kaneko
Keyword(s):  
Electron Microscopy ◽  
Petroleum Hydrocarbons ◽  
The Arctic ◽  
Microbial Populations ◽  
Nutritional Requirements ◽  
Detailed Characterization ◽  
Bacterial Populations ◽  
Food Particles ◽  
Scanning Electron

Microbial populations associated with the amphipod Boeckosimus affinis were examined using scanning electron microscopy and by detailed characterization of viable isolates. Bacterial populations were observed on food particles in the midgut, on the anal plates, and on faecal matter, but no bacteria were observed on the outer surfaces or on the gut lining of the amphipod. The dominant bacterial populations associated with the amphipods were in the Vibrio–Beneckea group. Exposure to petroleum hydrocarbons resulted in a decreased dominance of the vibriolike bacterial populations associated with the amphipods. During captivity (without feeding) there were successional changes in the bacterial populations associated with the amphipods; the diversity of the bacterial community increased and the bacterial populations became less stringent in their physiological and nutritional requirements.

Oil and gas exploration in northern Canada

Polar Record ◽  
1961 ◽  
Vol 10 (67) ◽  
pp. 359-364
Author(s):  
A. T. Davidson
Keyword(s):  
British Columbia ◽  
Federal Government ◽  
Northwest Territories ◽  
Oil And Gas ◽  
The Arctic ◽  
Land Area ◽  
Northern Canada ◽  
Oil And Gas Exploration ◽  
The World ◽  
First Time

About 80 million acres on the mainland of the Northwest Territories and Yukon, and over 40 million acres on the Arctic islands, are under oil and gas exploration permit. Exploration permits were issued in the Arctic islands for the first time in June 1960, following promulgation in April of new Canada Oil and Gas Regulations for federal government lands. The issue of these permits extended the northern oil and gas search from the Alberta and British Columbia borders, in lat. 60° N., northward to the Arctic islands; in terms of land area this is one of the most widespread oil and gas searches in the world. The Arctic islands exploration also holds particular interest since it is the farthest north oil and gas exploration ever carried out.

New species of Tubificoides Lastockin (Oligochaeta; Tubificidae) from the Pacific Northeast and the Arctic

1983 ◽  
Vol 61 (6) ◽  
pp. 1270-1283 ◽  
Author(s):  
H. R. Baker
Keyword(s):  
British Columbia ◽  
New Species ◽  
The Arctic ◽  
The Pacific ◽  
Species Groups ◽  
Intertidal Habitats

Descriptions of six new species of marine or estuarine tubificid oligochaetes are given. Tubificoides kozloffi sp.nov., and Tubificoides brevicoleus sp.nov. are described from intertidal habitats of Washington and British Columbia. Tubificoides foliatus sp.nov., a species previously identified as belonging to the Tubificoides gabriellae complex, is described from California and British Columbia. Tubificoides cuspisetosus sp.nov., Tubificoides palacoleus sp.nov., and Tubificoides crenacoleus sp.nov. are described from the Arctic. A key to the species-groups of Tubificoides is given.

Anastrophyllum assimile and Marsupella revoluta, new to the interior of North America

1977 ◽  
Vol 55 (19) ◽  
pp. 2479-2484 ◽  
Author(s):  
Diana G. Horton
Keyword(s):  
British Columbia ◽  
North America ◽  
Northwest Territories ◽  
North American ◽  
Yukon Territory ◽  
The Arctic ◽  
Devon Island ◽  
New Localities ◽  
Central Eastern ◽  
Coastal British Columbia

Anastrophyllum assimile (Mitt.) Steph. and Marsupella revoluta (Nees) Lindb. are reported from the Keele Peak area, central-eastern Yukon Territory, Canada, and M. revoluta is also reported from Devon Island, Northwest Territories, Canada. These new localities extend a pattern of disjunct occurrences throughout the known range of both species, which further support the hypothesis of their relictual status. However, collections of A. assimile from coastal British Columbia and the Alexander Archipelago, Alaska, are indicative of strong oceanic affinities of North American populations of this species. Also, the arctic and alpine localities at which either A. assimile or M. revoluta might be expected to occur in the interior of Alaska and the Yukon are limited in number as both species invariably occur in association with siliceous substrates.

Determining the provenance of Triassic sedimentary rocks in northeastern British Columbia and western Alberta using detrital zircon geochronology, with implications for regional tectonics

2016 ◽  
Vol 53 (2) ◽  
pp. 140-155 ◽  
Author(s):  
M.L. Golding ◽  
J.K. Mortensen ◽  
F. Ferri ◽  
J.-P. Zonneveld ◽  
M.J. Orchard
Keyword(s):  
British Columbia ◽  
North America ◽  
Detrital Zircon ◽  
Age Distribution ◽  
Volcanic Rocks ◽  
Significant Proportion ◽  
Foreland Basin ◽  
Detrital Zircons ◽  
Passive Margin ◽  
The Arctic

Triassic rocks of the Western Canada Sedimentary Basin (WCSB) have previously been interpreted as being deposited on the passive margin of North America. Recent detrital zircon provenance studies on equivalent Triassic rocks in the Yukon have suggested that these rocks were in part derived from the pericratonic Yukon–Tanana terrane and were deposited in a foreland basin related to the Late Permian Klondike orogeny. Detrital zircons within a number of samples collected from Triassic sediments of the WCSB throughout northeastern British Columbia and western Alberta suggest that the bulk of the sediment was derived from recycled sediments of the miogeocline along western North America, with a smaller but significant proportion coming from the Innuitian orogenic wedge in the Arctic and from local plutonic and volcanic rocks. There is also evidence of sediment being derived from the Yukon–Tanana terrane, supporting the model of terrane accretion occurring prior to the Triassic. The age distribution of detrital zircons from the WCSB in British Columbia is similar to those of the Selwyn and Earn sub-basins in the Yukon and is in agreement with previous observations that sediment deposited along the margin of North America during the Triassic was derived from similar source areas. Together these findings support the model of deposition within a foreland basin, similar to the one inferred in the Yukon. Only a small proportion of zircon derived from the Yukon–Tanana terrane is present within Triassic strata in northeastern British Columbia, which may be due to post-Triassic erosion of the rocks containing these zircons.

scholarly journals Seven hundred years of human-driven and climate-influenced fire activity in a British Columbia coastal temperate rainforest

2016 ◽  
Vol 3 (10) ◽  
pp. 160608 ◽  
Author(s):  
Kira M. Hoffman ◽  
Daniel G. Gavin ◽  
Brian M. Starzomski
Keyword(s):  
British Columbia ◽  
Fire History ◽  
Southern Oscillation ◽  
The Arctic ◽  
Climate Indices ◽  
Late Nineteenth Century ◽  
Temperate Rainforest ◽  
Decadal Scale ◽  
Fire Activity ◽  
Temperate Rainforests

While wildland fire is globally most common at the savannah-grassland ecotone, there is little evidence of fire in coastal temperate rainforests. We reconstructed fire activity with a ca 700-year fire history derived from fire scars and stand establishment from 30 sites in a very wet (up to 4000 mm annual precipitation) temperate rainforest in coastal British Columbia, Canada. Drought and warmer temperatures in the year prior were positively associated with fire events though there was little coherence of climate indices on the years of fires. At the decadal scale, fires were more likely to occur after positive El Niño-Southern Oscillation and Pacific Decadal Oscillation phases and exhibited 30-year periods of synchrony with the negative phase of the Arctic Oscillation. Fire frequency was significantly inversely correlated with the distance from former Indigenous habitation sites and fires ceased following cultural disorganization caused by disease and other European impacts in the late nineteenth century. Indigenous people were likely to have been the primary ignition source in this and many coastal temperate rainforest settings. These data are directly relevant to contemporary forest management and discredit the myth of coastal temperate rainforests as pristine landscapes.

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