Responses to Crude Oil Contamination by Cricotopus (Cricotopus) bicinctus and C. (C.) mackenziensis (Diptera: Chironomidae) in the Fort Simpson Area, Northwest Territories

1977 ◽  
Vol 34 (2) ◽  
pp. 254-261 ◽  
Author(s):  
David M. Rosenberg ◽  
Allen P. Wiens ◽  
Ole A. Sæther
Keyword(s):  
Crude Oil ◽  
Northwest Territories ◽  
Food Supply ◽  
Algal Biomass ◽  
Head Capsule ◽  
Common Species ◽  
Artificial Substrates ◽  
Oil Contamination ◽  
Field Exposure ◽  
Head Capsule Width

Cricotopus (Cricotopus) bicinctus (Meigen) and C. (C.) mackenziensis Oliver, two common species of Chironomidae in the Fort Simpson area, N.W.T., were examined for changes resulting from experimental field exposure to Norman Wells crude oil. Larvae of both species were always present in higher numbers on oiled than unoiled artificial substrates but numbers of C. bicinctus increased more quickly than C. mackenziensis in response to the oil. Cricotopus mackenziensis larvae occurred in higher numbers than C. bicinctus larvae on unoiled artificial substrates. Cricotopus bicinctus tended to dominate C. mackenziensis on oiled artificial substrates. Size of larvae, as measured by head capsule width, was unaffected by increased food supply during periods of maximum algal biomass on oiled artificial substrates. Larvae on oiled artificial substrates apparently produced part of another generation when compared to larvae on unoiled artificial substrates.

Community and Species Responses of Chironomidae (Diptera) to Contamination of Fresh Waters by Crude Oil and Petroleum Products, with Special Reference to the Trail River, Northwest Territories

1976 ◽  
Vol 33 (9) ◽  
pp. 1955-1963 ◽  
Author(s):  
D. M. Rosenberg ◽  
A. P. Wiens
Keyword(s):  
Literature Review ◽  
Crude Oil ◽  
Special Reference ◽  
Northwest Territories ◽  
Positive Response ◽  
Open Water ◽  
Petroleum Products ◽  
Freshwater Ecosystems ◽  
Artificial Substrates ◽  
Oil Contamination

On oiled and unoiled artificial substrates in the Trail River, Northwest Territories, communities of Chironomidae were different during open-water periods but were similar over the winter. Greater numbers of species and individuals of Orthocladiinae occurred on the oiled than on the unoiled artificial substrates. The reverse was true for Tanypodinae and Chironominae. Ten species of Chironomidae showed a positive response to the presence of oil, 9 species showed a negative response, and 10 species were apparently unaffected. Based on the results of this study and a literature review, 11 species of Chironomidae showing either positive or negative responses to contamination by oil or petroleum products were evaluated for their potential to indicate oil contamination of freshwater ecosystems. Three criteria were used: taxonomic soundness, wide zoogeographic distribution, and numbers in the community. We predict that Nilotanypus fimbriatus (Walk.), Cricotopus bicinctus (Meig.), and C. varipes Coq., individually or as an assemblage, would fulfill this role.

Development of a plant microbiome bioremediation system for crude oil contamination

2021 ◽  
Vol 9 (4) ◽  
pp. 105401
Author(s):  
Maimona Saeed ◽  
Noshin Ilyas ◽  
Muhammad Arshad ◽  
Muhammad Sheeraz ◽  
Iftikhar Ahmed ◽  
...  
Keyword(s):  
Crude Oil ◽  
Oil Contamination ◽  
Crude Oil Contamination ◽  
Plant Microbiome

scholarly journals Comparison of plant growth and remediation potential of pyrochar and thermal desorption for crude oil-contaminated soils

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Noshin Ilyas ◽  
Uzma Shoukat ◽  
Maimona Saeed ◽  
Nosheen Akhtar ◽  
Humaira Yasmin ◽  
...  
Keyword(s):  
Plant Growth ◽  
Crude Oil ◽  
Thermal Desorption ◽  
Soil Analysis ◽  
Soluble Sugars ◽  
Oil Contamination ◽  
Slow Pyrolysis ◽  
Combined Application ◽  
Crude Oil Contamination ◽  
Germination And Growth

AbstractCrude oil contamination is a serious environmental threat for soil and plants growing in it. This study provides the first experimental evidence for comparison of the efficacy of pyrochar (slow pyrolysis biochar), thermal desorption and their combined application for degradation of crude oil contaminated soil (0%, 10%, and 20%), and growth of lettuce under glasshouse conditions. Pyrochar was produced by pyrolysis of sawdust at 350 °C, whereas thermal desorption was done by soil pyrolysis at 500 °C. Soil incubations were done for 120 days. The results of soil analysis showed that the crude oil degradation efficiency for the combined application was highest (40%), whereas pyrochar and thermal desorption was 25% and 19.6%, respectively. The maximum degradation products of crude oil were manifested by the detection of low molecular weight hydrocarbons (ranged between 173 and 422) in the soil with combined application treatment using Gas Chromatography-Mass Spectrometry (GC–MS) analysis. Crude oil contamination significantly reduced the germination and growth of the lettuce plants. Similarly, the combined application also improved plant growth by an increase of 24% in germination percentage, 35.5% in seedling vigor index, and 27% in promptness index under 20% crude oil contamination. Remediation caused a significant increase in fresh and dry biomass (40%), leaf area (30%), total chlorophyll (21%), water potential (23.6%), osmotic potential (27%), and membrane stability index (40%). Moreover, there was an increase in the contents of proline (32%), total amino acids (29%), soluble sugars (37%), proteins (27%), and antioxidant enzymes such as superoxide dismutase (19%), catalase (33%) and peroxidase (38%). This study confirmed the efficacy of pyrochar (slow pyrolysis biochar), thermal desorption, and their combined application for crude oil decontamination of soil at laboratory scale and also in improving soil usability by improved germination and growth of lettuce.

Marine tube-dwelling diatoms of eastern Canada: descriptions, checklist, and illustrated key

1984 ◽  
Vol 62 (4) ◽  
pp. 778-794 ◽  
Author(s):  
Christopher S. Lobban
Keyword(s):  
New Species ◽  
Northwest Territories ◽  
Common Species ◽  
Bay Of Fundy ◽  
Eastern Canada ◽  
Lawrence Estuary ◽  
The Common ◽  
Living Material ◽  
St Lawrence Estuary ◽  
A New Species

From a study of living materials and specimens in several regional herbaria, a list has been drawn up of all the common and several of the rarer tube-dwelling diatoms of eastern Canada. Descriptions, illustrations of living material and acid-cleaned valves, and a key to the species are provided. Most specimens were from the Atlantic Provinces and the St. Lawrence estuary, but a few were from the Northwest Territories. By far the most common species is Berkeleya rutilans. Other species occurring commonly in the Quoddy Region of the Bay of Fundy, and sporadically in space and time elsewhere, arc Navicula delognei (two forms), Nav. pseudocomoides, Nav. smithii, Haslea crucigera, and a new species, Nav.rusticensis. Navicula ramosissima and Nav. mollis in eastern Canada are usually found as scattered cohabitants in tubes of other species. Nitzschia tubicola and Nz. fontifuga also occur sporadically as cohabitants.

News & Notes: Bioremediation of Crude Oil Contamination with Acinetobacter sp. A3

1997 ◽  
Vol 35 (3) ◽  
pp. 191-193 ◽  
Author(s):  
K.G. Hanson ◽  
Anuranjini Nigam ◽  
Madhavi Kapadia ◽  
Anjana J. Desai
Keyword(s):  
Crude Oil ◽  
Oil Contamination ◽  
Crude Oil Contamination ◽  
Acinetobacter Sp
Sign in / Sign up

Export Citation Format

Share Document