Effect of Low Dissolved Oxygen on Aquatic Life Stages of the Caddisfly Clistoronia magnifica (Limnephilidae)

1996 ◽  
Vol 31 (4) ◽  
pp. 453-458
Author(s):  
A. V. Nebecker ◽  
S. T. Onjukka ◽  
D. G. Stevens ◽  
G. A. Chapman
Keyword(s):  
Dissolved Oxygen ◽  
Life Stages ◽  
Aquatic Life ◽  
Low Dissolved Oxygen

Effect of low dissolved oxygen on aquatic life stages of the caddisfly Clistoronia magnifica (Limnephilidae)

1996 ◽  
Vol 31 (4) ◽  
pp. 453-458 ◽  
Author(s):  
A. V. Nebeker ◽  
S. T. Onjukka ◽  
D. G. Stevens ◽  
G. A. Chapman
Keyword(s):  
Dissolved Oxygen ◽  
Life Stages ◽  
Aquatic Life ◽  
Low Dissolved Oxygen

Simultaneous Nutrient Removal Through Low Dissolved Oxygen Operation: Application, Pitfalls and Design

2017 ◽  
Vol 2017 (13) ◽  
pp. 1308-1313
Author(s):  
Jose Jimenez ◽  
David Stensel ◽  
Glen Daigger
Keyword(s):  
Dissolved Oxygen ◽  
Nutrient Removal ◽  
Low Dissolved Oxygen ◽  
Simultaneous Nutrient Removal

Understanding Simultaneous Nutrient Removal through Low Dissolved Oxygen Operation

2018 ◽  
Vol 2018 (5) ◽  
pp. 296-303
Author(s):  
Jose Jimenez ◽  
Pusker Regmi ◽  
Mark Miller
Keyword(s):  
Dissolved Oxygen ◽  
Nutrient Removal ◽  
Low Dissolved Oxygen ◽  
Simultaneous Nutrient Removal

A study of water quality in an urban river and potential improvement using a prototype instream aerator

1989 ◽  
Vol 16 (3) ◽  
pp. 308-316 ◽  
Author(s):  
C. A. Town ◽  
D. S. Mavinic ◽  
B. Moore
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Data Base ◽  
Chlorophyll A ◽  
Late Summer ◽  
Urban River ◽  
Agricultural Activity ◽  
Fish Kills ◽  
Low Dissolved Oxygen ◽  
Oxygen Levels

Urban encroachment and intensive agricultural activity within the Serpentine–Nicomekl watershed (near Vancouver, B.C.) have caused a series of fish (salmon) kills on the Serpentine River since 1980. Low dissolved oxygen was responsible for these kills. This field project investigated some of the dynamic chemical and biological relationships within the river, as well as the use of an instream aerator as a temporary, in situ, water quality improvement measure. Weekly sampling for a 6-month period during the latter half of 1985 established a solid data base for deriving and interpreting meaningful interrelationships. A strong correlation between chlorophyll a and dissolved oxygen levels before the algae die-off supported the hypothesis that algae blooms dying in the fall could create a serious oxygen demand. Because of these environmental conditions, the river is unable to sustain healthy dissolved oxygen levels during this period. As such, a prototype, 460 m artificial aeration line was designed, installed, and monitored to evaluate its potential for alleviating low dissolved oxygen conditions and improving overall water quality during the critical fall period.The instream aerator ran continuously for over 2 months, starting in September 1985. Despite better-than-expected weather conditions (i.e., cool, wet weather) and relatively high dissolved oxygen levels during the fall of 1985, the data base appeared to support the use of this prototype aeration unit as a means of "upgrading" a stretch of an urban river subject to periodic, low dissolved oxygen levels. As a result, a 2-year follow-up study and river monitoring was initiated. In both 1986 and 1987, late summer and early fall river conditions resulted in the potential for serious salmon kills, due to higher-than-normal river temperatures and very low dissolved oxygen. In both instances, the instream aerator prevented such fish kills in a key stretch of the river. Expansion of the system to include other critical stretches of the Serpentine and other urban river systems, near Vancouver, is being considered. Key words: algae, aerator, chlorophyll a, eutrophic, fish kills, instream aeration, river improvement, urban river.

Minimal Dissolved Oxygen Requirements of Aquatic Life with Emphasis on Canadian Species: a Review

1975 ◽  
Vol 32 (12) ◽  
pp. 2295-2332 ◽  
Author(s):  
John C. Davis
Keyword(s):  
Dissolved Oxygen ◽  
Water Body ◽  
Physical Factors ◽  
Seasonal Temperature ◽  
Low Oxygen ◽  
Aquatic Life ◽  
Invertebrate Species ◽  
Oxygen Regime ◽  
Response Thresholds ◽  
Oxygen Requirements

This article reviews the sensitivity, responses, response thresholds, and minimum oxygen requirements of marine and freshwater organisms with strong emphasis on Canadian species. The analysis attempts to define low dissolved oxygen thresholds which produce some physiological, behavioral, or other response in different species.Oxygen availability is discussed with reference to seasonal, geographical, or spatial variation in dissolved oxygen. Factors affecting availability of dissolved oxygen include atmospheric exchange, mixing of water masses, upwelling, respiration, photosynthesis, ice cover, and physical factors such as temperature and salinity. Dissolved oxygen terminology is summarized and tables are included for both fresh and saltwater O2 solubility at different temperatures.Incipient O2 response thresholds are used in a statistical analysis to develop oxygen criteria for safeguarding various groups of freshwater and marine fish. These include mixed freshwater fish populations including or excluding salmonids, freshwater salmonid populations, salmonid larvae or mature salmonid eggs, marine anadromous and nonanadromous species. Criteria are based on threshold oxygen levels which influence fish behavior, blood O2 saturation, metabolic rate, swimming ability, viability and normal development of eggs and larvae, growth, circulatory dynamics, ventilation, gaseous exchange, and sensitivity to toxic stresses. The criteria provide three levels of protection for each fish group and are expressed as percentage oxygen saturation for a range of seasonal temperature maxima.Oxygen tolerances and responses of aquatic invertebrates to low oxygen are reviewed for freshwater and marine species according to habitat. No invertebrate criteria are proposed owing to the capacity for many invertebrate species to adopt anaerobic metabolism during low O2 stress. It is suggested that the criteria proposed for fish species will provide a reasonable safeguard to most invertebrate species. It appears likely, however, that a change in oxygen regime to one of increased O2 scarcity will probably influence invertebrate community structure.It is suggested that criteria for protection of aquatic life be implemented by groups of experienced individuals. The group should consider the natural oxygen regime for a specific water body and its natural variability, the aquatic life therein and its value, importance, relative O2 sensitivity, and the possibility of interactions with toxicants and other factors that may compound the stress produced by low O2 on aquatic life. Each water body and its aquatic life should be considered as a unique situation and criteria application should not encompass diverse areas, habitats, or biological associations as if they were identical.

Effects of Low Dissolved Oxygen Events on the Macrobenthos of the Lower Chesapeake Bay

Estuaries ◽  
1992 ◽  
Vol 15 (3) ◽  
pp. 384 ◽  
Author(s):  
Daniel M. Dauer ◽  
Anthony J. Rodi ◽  
J. Ananda Ranasinghe
Keyword(s):  
Dissolved Oxygen ◽  
Chesapeake Bay ◽  
Low Dissolved Oxygen
Sign in / Sign up

Export Citation Format

Share Document