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Effects of selected biotic and abiotic factors on growth and survival of young crayfish, Orconectes virilis (Hagen)
(1988)
The growth and survival of Orconectes virilis young was
studied in 50 x 50 x 50 cm lake enclosures during the summer
seasons of 1986 and 1987. The effects of density (12/m2, 40/m2,
160/m2), substrate (mud, sand, ...
Effect of body condition on reproductive performance and secondary sex ratios in ring-billed gulls (Larus delawarensis)
(1986)
Nesting Ring-billed Gulls (Larus delawarensis) were studied on
Granite Island, northern Lake Superior, during the breeding seasons of
1983 and 1984 to determine if there was a relationship between food
supply and the ...
Body condition of gray partridge (Perdix perdix) during fall and winter in Saskatchewan
(1983)
During August 1979 to March 1980, 118 Gray Partridge were
collected from a 207[superscript 2] km study area near Tugaske, Saskatchewan.
Temperature and snowpack information were monitored throughout
the study period. ...
Population dynamics of an exploited population of Orconectes virilis in Northwestern Ontario
(1987)
Exploitation of northern stocks of the crayfish Orconectes
virilis (Hagen) produced significant alterations in several
population parameters. High fishing efforts increased per capita
fecundity, young-of-year (YOY) ...
Ecology of northern pike, Esox lucius Linnaeus, in Savanne Lake, Ontario
(1980)
Important aspects of the life history and population dynamics
of the northern pike, Esox lucius, in Savanne Lake, Ontario
were studied during 1977 and 1978. Feeding relationships involving
northern pike and walleyes, ...
Use of a single epiphyte lichen species Hypogymnia physodes as an indicator of air quality in northern Ontario
(1988)
It has been determined that lichens are excellent indicators of regional
air quality, since they are long-lived and totally dependent on atmospheric
sources for nutrients. In the summer of 1987, samples of the ...
Initial effects of the exploitation of walleye, Stizostedion vitreum vitreum (Mitchill) on the boreal percid community of Henderson Lake, Northwestern Ontario
(1982)
The effect of large scale exploitation of walleye Stizostedion vitreum
vitreum on the boreal percid community of Henderson Lake, northwestern
Ontario, was studied from 1979 to 1981. Investigations centered on the two
major ...
Effects of an episodic removal scheme on a walleye, stizostedion vitreum vitreum, population
(1985)
A pulse fishing scheme, applied over a three year period (1980
to 1982), deliberately removed 3226 walleye from Henderson Lake,
Ontario, causing the stock to collapse. The objective of the removal
was not only to seek ...
Comparison of the yellow perch, Perca flavescens Mitchell, populations in Henderson Lake and Savanne Lake, Ontario
(1984)
Yellow perch (Perca flavescens) in Henderson Lake exhibit
stunted growth and poor condition at all ages. In addition, they have
lower fecundity, longer life span, slower maturation rate, and greater
survival compared ...
Behaviour and reproductive success of female-female pairs of Ring-billed gulls (Larus delawarenis), Granite Island
(1982)
Female-female pairs of Ring-billed Gulls were studied on
Granite Island, northern Lake Superior, during the breeding
seasons of 1979 and 1980. In 1979 the colony consisted of approximately
2400 pairs with 99 nests (4.1%) ...