... maximum. Stream NO
3
-
increased and ANC decreased during
fall, coinciding with increased flow and decreased plant activity. Nitrate concentrations
increased and ANC values decreased during winter, ... 1982). Although Al is abundant in nature,
it is relatively insoluble in the neutral pH range and thus unavailable biologically. Acid-
neutralizing capacity largely controls pH and the b...
... 8,000 years ago. Lake Agassiz was impounded between
the retreating ice margins and the Manitoba Escarpment — the present-day remnants
including Lakes Manitoba, Winnipeg, Dauphin, and Winnipegosis. ... banksiana) and red pine (Pinus
resinosa); poorly drained sites are characterized by black and white spruce, balsam fir,
tamarack (Larix laracina), eastern red cedar (Juniperus virginiana),...
... Superior basin, and finally eastward into Lake Barlow-Ojib
-
way (Mandrak and Crossman, 1992). Lake Barlow-Ojibway extended across northeastern
Ontario and northwestern Quebec, and drained into the ... variants have been
identified in Shield lake trout populations, including black fins (e.g., Redstone Lake) and
pale or dark background coloration (e.g., Lost Dog Lake and Ca...
... propose stocking all available hatchery-reared lake trout allocated to a lake in a
given year into one selected locality that has an abundance of spawning habitat, leaving
other areas of the lake unstocked. ... obstacles faced by lake trout in the Great Lakes.
Approximately 330 million yearling and fingerling lake trout were released into the Great
Lakes from 1950 to 2...
... spawning areas in the littoral zones of Lake aux Sables using a tarp
(Benoît and Legault, 2002) led lake trout to abandon these areas and reproduce in the
artificial deep-water spawning areas ... occurring after lake trout spawning. Draw-
downs occurred before lake spawning on 39 lakes and during spawning on 14 lakes (some
lakes had drawdowns occurring at more than one time)...
... 1-m increase in transparency would result in an increase in Z
10
of
ca. 1 m. Following a 2-m increase in transparency, optimal habitat volumes in the same
lakes would be reduced by between 8 and ... experimental clearcut logging on thermal
stratification, dissolved oxygen, and lake trout (Salvelinus namaycush) habitat volume in three
small boreal forest lakes, Canadian Jou...
... maximum and (b) mean depths between 1892 lake trout lakes and 436
other non lake trout lakes with available data.
Lake Trout lakes Non -Lake Trout Lakes
Maximum Depth (m)
0-1 0
1 0-2 0
2 0-3 0
3 0-4 0
4 0-5 0
5 0-6 0
6 0-7 0
7 0-8 0
8 0-9 0
9 0-1 00
10 0-1 10
50
40
30
20
10
0
Percent ... distributions in 293 lake trout lakes and 927 lakes with...
... Molot, L .A. , 2003, Predicting optimal habitat boundaries for lake trout
(Salvelinus namaycush Walbaum) in Canadian Shield lakes, Canadian Journal of Fisheries and
Aquatic Sciences (in press).
Dillon, ... organisms, leading Gorham (1996) to declare that lakes are under a
“three-pronged attack” (Figure 8.7).
In summary, DOC can have many important effects on lake trout habitat...
... pollutants may be increasing
Hg concentrations in lake trout in small Boreal lakes. Experimental lake acidification was
observed to increase Hg in fish (Wiener et al., 1990) and Hg in fish in lakes ... mercury dynamics in Lake
Ontario lake trout (Salvelinus namaycush), Canadian Journal of Fisheries and Aquatic Sciences 49:
108 6 109 6.
Cabana, G. and Rasmussen, J.B.,...
... open-water lake trout fisheries
occurred on Algonquin Park lakes in the late 1940s and early 1950s. Martin (1954) found
that in lakes where lake trout mature at a young age (5 years) and a small ... Anglers with tags have the choice of releasing a fish or keeping and tagging it and
applying it to their seasonal or annual quota.
An individual tag-and-quota system for lake...