Response of lake trout (Salvelinus namaycush) and brook trout (S. fontinalis) to surface water acidification in Ontario

Beggs, G. L.; Gunn, John M.

doi:10.1007/bf00303336

Cited by 43 publications

(8 citation statements)

References 12 publications

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“…Fromm, 1980;Muniz and Leivestad, 1980;Haines, 1981;Spry etal., 1981;Wood and McDonald, 1982;Howells, 1984;Brown and Sadler, 1989;McDonald et al, 1989;Wood, 1989), although most articles concentrate on postlarval stages. As recruitment failure, rather than the deaths of adult and large juvenile fish, is probably the main reason for the decline or disappearance of fisheries (Beamish, 1974;Rosseland et al, 1980;Beggs and Gunn, 1986;Brown et al, 1988;Tumpenny et al, 1988), it is surprising that the early life stages of fish have not before been the subject of review.…”

Section: Introductionmentioning

confidence: 99%

Freshwater acidification: effects on the early life stages of fish

Sayer¹,

Reader

Dalziel

1993

Rev Fish Biol Fisheries

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Section: Introductionmentioning

confidence: 99%

Freshwater acidification: effects on the early life stages of fish

Sayer¹,

Reader

Dalziel

1993

Rev Fish Biol Fisheries

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“…The response of pale chub population observed at GS 17.7 was matched well the recruitment failure, except for fecundity indicator (Table 4) compared with reference site (GS 26.6). The recruitment failure pattern was characterized by decreased recruitment that have been associated with three reasons; prolonged increases in egg mortality or recruitment failure 16 , deterioration of spawning or nursery habitat 38 , and stressor-induced spawning failures 39 . The Response of pale chub population at the downstream sites (GS 7.2 and GS 2.7) was also matched well the chronic recruitment failure, except for egg size indicator ( Table 4).…”

Section: Population Response Patternmentioning

confidence: 99%

Population response of pale chub (Zacco platypus) exposed to wastewater effluents in Gap Stream

Kim

Yeom

2009

Toxicol. Environ. Health. Sci.

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The effects of effluent from a municipal wastewater treatment plant (MWTP) on population level responses of the pale chub (Zacco platypus), as sentinel species, were evaluated at four sites of the Gap Stream (GS) in June 2007. At GS 7.2 and GS 2.7, downstream of the municipal wastewater outfall, the response patterns of the pale chub population in the age at maturation were not changed; mean age, fecundity, and condition factor were increased; age distribution was shifted to older; growth rate was increased/or not changed; and the egg size and population size were decreased compared with reference site (GS 26.6). These observed responses of the pale chub population matched well with the characteristics expected from a fish population experiencing chronic recruitment failure, except for the decreased egg size due to the elevation in nutrients and pollutants by treated sewage discharge. The observed response pattern at the downstream sites might be caused by the deterioration of the spawning or nursery habitat, or by the contaminant-induced chronic spawning failures. Thus, these results suggest that the effluent of the MWTP might impact on the fish population structure and health status of pale chub population.

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“…Baker et al . (1988) and Beggs & Gunn (1986) have indicated that pH is a reliable predictor of lake and brook trout presence, with a critical lower pH threshold of pH 5 .5-5 .3 for lake trout and 5 .0 for brook trout .…”

Section: Whirligig Lakementioning

confidence: 99%

Long-term trends in limnological characteristics in the Aurora trout lakes, Sudbury, Canada

Dixit

Smol

1996

Hydrobiologia

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Paleolimnological techniques were employed to document the limnological histories of the aurora trout lakes, located in the Sudbury region of Ontario . Two of these lakes are of special interest to fisheries managers, as they represent the only known native habitats of a rare strain of brook trout : the aurora trout. These lakes were limed as part of restoration efforts . Stratigraphic changes in diatom and chrysophyte assemblages from dated lake sediment cores indicate that all the lakes have been impacted by anthropogenic acidification, although the timing and the magnitude of acidification were different amongst the lakes . For example, Whirligig Lake was likely the most naturally acidic lake in the past, but it had further acidified since about 1960 . This lake was limed in 1989 and then again in 1993 . In Whitepine Lake, acidification started 1940 ; however, in the most recent sediments (1992), some recovery in lakewater acidity has occurred . In Little Whitepine Lake (a reference lake), acidification started earlier (-1920) and the lakewater pH continued to decline until about 1990 . This lake was limed in 1989 . The chrysophyte paleoindicators suggest a recent recovery in this lake . The successful re-introduction of aurora trout in Whirligig and Whitepine lakes is undoubtedly related to the improved water quality through liming but, based on our paleolimnological indicators, the lakes' limnological characteristics (e .g . pH and metal concentrations) are still different from those present before atmospheric deposition of strong acids from the Sudbury smelters .

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Response of lake trout (Salvelinus namaycush) and brook trout (S. fontinalis) to surface water acidification in Ontario

Cited by 43 publications

References 12 publications

Freshwater acidification: effects on the early life stages of fish

Freshwater acidification: effects on the early life stages of fish

Population response of pale chub (Zacco platypus) exposed to wastewater effluents in Gap Stream

Long-term trends in limnological characteristics in the Aurora trout lakes, Sudbury, Canada

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