Interstitial Water Quality of Lake Trout Spawning Habitat

Sly, P. G.

doi:10.1016/s0380-1330(88)71560-9

Cited by 54 publications

(42 citation statements)

References 10 publications

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“…Lake trout spawn in the fall over clean rocky substrate and the eggs over-winter in interstitial spaces in the reef (Martin & Olver, 1980). Salmonid eggs can be killed by burial in sediment or from hypoxic conditions resulting from decomposition of organic matter in sediment (Sly, 1988;Ventling-schwank & Livingstone, 1994;Casselman, 1995;Manny et al, 1995). The distribution of lake trout and other salmonids is limited by oxygen availability (Ryan & Marshall, 1994) and hypoxia has been implicated as a major factor responsible for recruitment failure of lake trout and other salmonids in other lakes undergoing eutrophication (Tanner, 1952;Casselman, 1995;Cornelius et al, 1995;Manny et al, 1995;Noakes & Curry, 1995;Evans et al, 1996).…”

Section: Discussionmentioning

confidence: 99%

Effects of a Whole-lake, Experimental Fertilization on Lake Trout in a Small Oligotrophic Arctic Lake

et al. 2005

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We tested whether increased phosphorus and nitrogen concentrations would affect a lake trout (Salvelinus namaycush) population in a small oligotrophic lake with a benthically dominated food web. From 1990 to 1994, nitrogen and phosphorus were added to Lake N1 (4.4 ha) at the arctic Long-Term Ecological Research site in Alaska. We used mark/recapture methods to determine the lake trout population size, size structure, recruitment, and individual growth from 1987 to 1999. Data were also collected on water chemistry and food availability. Fertilization resulted in increased pelagic primary productivity, chlorophyll a, turbidity, snail density, and hypoxia in summer and winter. Lake trout density was not affected by the manipulation however growth and average size increased. Recruitment was high initially, but declined throughout the fertilization. These results suggest that lake trout were affected through increased food availability and changes to the physical characteristics of the lake. During fertilization, hypoxia near the sediments may have killed over-wintering embryos and decreased habitat availability. Although lake trout responded strongly to increased nutrients, loss of recruitment might jeopardize lake trout persistence if arctic lakes undergo eutrophication.

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Section: Discussionmentioning

confidence: 99%

Effects of a Whole-lake, Experimental Fertilization on Lake Trout in a Small Oligotrophic Arctic Lake

et al. 2005

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“…These methods have included active gears such as suction samplers and trawls (Stauffer 1981), and numerous passive sampling gears including egg pails (Stauffer 1981), egg trays (Sly 1988), egg bags (Horns et al 1989), egg traps (Marsden et al 1991: Perkins andKrueger 1994a), egg nets (Perkins and Krueger 1994b), egg funnels (J. Fitzsimons, unpublished data), and fry traps (Stauffer 1981). The use and limitations of these different methods has received considerable review (Stauffer 1981;Fitzsimons 1994a;Kelso et al 1995;Schreiner et al 1995).…”

Section: A Review Of Lake Trout Spawning At Man-made Structures and Nmentioning

confidence: 99%

The significance of man-made structures for lake trout spawning in the Great Lakes: are they a viable alternative to natural reefs?

Fitzsimons¹

1996

Can. J. Fish. Aquat. Sci.

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High lake trout (Salvelinus namaycush) egg abundance reported at some man-made structures, including artificial reefs in Lakes Michigan and Ontario, indicates that construction of artificial reefs may be one means of enhancing reproduction for this species in the Great Lakes. A review of spawning at man-made and natural spawning areas indicated consistently higher abundance of eggs, fry, and young-of-the-year lake trout associated with man-made structures. Hence, artificial reefs could make a significant contribution to restoration of lake trout stocks in the Great Lakes. It was not clear, however, why some man-made structures were used by lake trout and some were not. It is recommended, therefore, that construction of artificial reefs be approached on an experimental basis and that reef construction be part of an overall strategy to increase availability of spawning habitat. Also included in this strategy is stocking lake trout closer to areas of natural spawning substrate and resolving potential resource user conflicts. Studies should also be conducted to evaluate how life stage at stocking (e.g., egg, fry, yearling) affects subsequent use of spawning habitat and to determine if genetic factors are involved.

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“…Degradation of organic matter can cause severe dissolved oxygen depletion and this could have been fatal to developing eggs during the fall and over winter. Sly (1988) reported that degradation of Cludophora and milfoil was a serious threat to lake trout spawning shoals in the Kingston basin.…”

Section: Fish Populationsmentioning

confidence: 99%

“…comm.) which might influence physiological development, degradation of spawning habitat, and embryo mortality (Eshenroder et al, 1984;Sly, 1988). Exposure studies have demonstrated that embryo and larval fish stages are most sensitive to the effects of contaminants.…”

Section: Benthic Jishmentioning

confidence: 99%

The effects of land use and cultural development on the Lake Ontario ecosystem since 1750

Sly¹

1991

Hydrobiologia

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Lake Ontario is the lowest in the chain of live Great Lakes which form part of the boundary between Canada and the United States. Although European exploration began as early as 1615, it was not until the mid-18th Century that permanent settlement began in the Great Lakes basin. Construction of the Erie Canal which links Buffalo with New York via the Hudson River, and its branch to Oswego, strengthened ties between settlements around the lower Great Lakes (lakes Erie and Ontario) and rapidly growing populations along the Atlantic seaboard. The coming of railroads greatly expanded these ties, and provided a direct link between Canadian settlements and the port of Montreal. Over the past 200 years, successive waves of immigrants entered the region, particularly from Europe.Cultural development has resulted in a wide range of environmental impacts throughout the Great Lakes basin. Impacts have been particularly severe in Lake Ontario. Major changes in water quality and the structure of biological communities have resulted from forest clearance, agricultural expansion, intensive fishing, industrial and urban development, and lake level control. Introductions of exotic species, inputs of nutrient and toxic contaminants, and the effects of climatic variation and modification of microclimates have all interacted such that it is often impossible to establish singular cause and effect.

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Interstitial Water Quality of Lake Trout Spawning Habitat

Cited by 54 publications

References 10 publications

Effects of a Whole-lake, Experimental Fertilization on Lake Trout in a Small Oligotrophic Arctic Lake

Effects of a Whole-lake, Experimental Fertilization on Lake Trout in a Small Oligotrophic Arctic Lake

The significance of man-made structures for lake trout spawning in the Great Lakes: are they a viable alternative to natural reefs?

The effects of land use and cultural development on the Lake Ontario ecosystem since 1750

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