scholarly journals Regions and Sub-regions of Lake Trout in the Main Basin of Lake Huron

2019 ◽  
Keyword(s):  
Lake Trout ◽  
Lake Huron ◽  
Main Basin

Lake Trout Status in the Main Basin of Lake Huron, 1973–2010

2012 ◽  
Vol 32 (2) ◽  
pp. 402-412 ◽  
Author(s):  
Ji X. He ◽  
Mark P. Ebener ◽  
Stephen C. Riley ◽  
Adam Cottrill ◽  
Adam Kowalski ◽  
...  
Keyword(s):  
Lake Trout ◽  
Lake Huron ◽  
Main Basin

scholarly journals Using time-varying asymptotic length and body condition of top piscivores to indicate ecosystem regime shift in the main basin of Lake Huron: a Bayesian hierarchical modeling approach

2016 ◽  
Vol 73 (7) ◽  
pp. 1092-1103 ◽  
Author(s):  
Ji X. He ◽  
James R. Bence ◽  
Edward F. Roseman ◽  
David G. Fielder ◽  
Mark P. Ebener
Keyword(s):  
Body Mass ◽  
Body Condition ◽  
Chinook Salmon ◽  
Regime Shift ◽  
Lake Trout ◽  
Growth Potential ◽  
Lake Huron ◽  
Time Varying ◽  
Bayesian Hierarchical ◽  
Main Basin

We evaluated the ecosystem regime shift in the main basin of Lake Huron that was indicated by the 2003 collapse of alewives (Alosa pseudoharengus) and dramatic declines in Chinook salmon (Oncorhynchus tshawytscha) abundance thereafter. We found that the period of 1995–2002 should be considered as the early phase of the final regime shift. We developed two Bayesian hierarchical models to describe time-varying growth based on the von Bertalanffy growth function and the length–mass relationship. We used asymptotic length as an index of growth potential and predicted body mass at a given length as an index of body condition. Modeling fits to length and body mass at age of lake trout (Salvelinus namaycush), Chinook salmon, and walleye (Sander vitreus) were excellent. Based on posterior distributions, we evaluated the shifts in among-year geometric means of the growth potential and body condition. For a given top piscivore, one of the two indices responded to the regime shift much earlier than the 2003 collapse of alewives, the other corresponded to the 2003 changes, and which index provided the early signal differed among the three top piscivores.

Heritage strain and diet of wild young of year and yearling lake trout in the main basin of Lake Huron

2009 ◽  
Vol 35 (4) ◽  
pp. 620-626 ◽  
Author(s):  
Edward F. Roseman ◽  
Wendylee Stott ◽  
Timothy P. O'Brien ◽  
Stephen C. Riley ◽  
Jeffery S. Schaeffer
Keyword(s):  
Lake Trout ◽  
Lake Huron ◽  
Main Basin

Cross-basin comparison of mercury bioaccumulation in Lake Huron lake trout emphasizes ecological characteristics

2014 ◽  
Vol 34 (2) ◽  
pp. 355-359 ◽  
Author(s):  
Rachel A. Abma ◽  
Gordon Paterson ◽  
Anne McLeod ◽  
G. Doug Haffner
Keyword(s):  
Lake Trout ◽  
Lake Huron ◽  
Ecological Characteristics ◽  
Mercury Bioaccumulation

The Thermal Regime of South Bay, Manitoulin Island

1967 ◽  
Vol 24 (1) ◽  
pp. 101-125 ◽  
Author(s):  
A. M. McCombie
Keyword(s):  
Thermal Regime ◽  
Thermal Stratification ◽  
Yellow Perch ◽  
Lake Trout ◽  
Smallmouth Bass ◽  
Lake Huron ◽  
Vertical Temperature ◽  
Class Strength ◽  
Influence Of Temperature On ◽  
History Of

The thermal regime of South Bay is described from records collected from 1953 to 1962 with thermometers, thermographs, and bathythermographs, the last being cast at 11 stations along the bay and one in Lake Huron. Warming begins in April and thermal stratification is established in June. Shallow areas warm more rapidly than deep in the spring and cool more quickly in autumn. The boundary between the epilimnion and the thermocline becomes sharper as summer advances but the transition from thermocline to hypolimnion remains gradual. The average seasonal trend of surface temperatures is a sine function with a maximum of 66 F in mid August and a minimum of 34 F in late March, though values outside this range occur frequently. At 180 ft the maximum of 47 F is attained in November. At the lake and outermost bay stations there is a temperature slump in June and July which may be due to an upwelling in the lake. Evidence of an exchange of water between the lake and bay is seen in vertical temperature sections and water movements Variations in epilimnial temperatures are correlated with those of the air temperature, but variations in epilimnial and hypolimnial temperatures appear to be unrelated. Finally, literature describing the influence of temperature on the year class strength of smallmouth bass, the distribution of lake trout, the growth of yellow perch, and the life history of Pontoporeia in South Bay is reviewed.

Fecundity and Egg Size of a Brood Stock of Salvelinus fontinalis × S. namaycush Hybrids (Splake)

1974 ◽  
Vol 31 (2) ◽  
pp. 217-220 ◽  
Author(s):  
G. B. Ayles
Keyword(s):  
Egg Size ◽  
Lake Trout ◽  
Salvelinus Fontinalis ◽  
Lake Huron ◽  
Female Size ◽  
Brood Stock ◽  
Trout Population ◽  
Egg Diameter

Estimates of average egg diameter and average number of eggs per female from a brood stock of Salvelinus fontinalis × S. namaycush (splake) hybrids were 0.468 cm and 1169 eggs, respectively. Variation in egg size between females was attributable to variation in both size and age of the fish, whereas differences in fecundity were attributed only to differences in female size. At a given size a splake had more and larger eggs than have been reported for lake trout. The significance of the findings is discussed in relation to the reestablishment of a viable trout population in Lake Huron.

Genetic structure of lake whitefish, Coregonus clupeaformis, populations in the northern main basin of Lake Huron

2012 ◽  
Vol 63 ◽  
pp. 241-260
Author(s):  
W. Stott ◽  
M.P. Ebener ◽  
L. Mohr ◽  
J. Schaeffer ◽  
E.F. Roseman ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Lake Huron ◽  
Coregonus Clupeaformis ◽  
Lake Whitefish ◽  
Main Basin

In Situ Determination of the Annual Thermal Habitat Use by Lake Trout (Salvelinus namaycush) in Lake Huron

2003 ◽  
Vol 29 ◽  
pp. 347-361 ◽  
Author(s):  
Roger A. Bergstedt ◽  
Ray L. Argyle ◽  
James G. Seelye ◽  
Kim T. Scribner ◽  
Gary L. Curtis
Keyword(s):  
Habitat Use ◽  
Lake Trout ◽  
Salvelinus Namaycush ◽  
Lake Huron ◽  
Thermal Habitat

Lake Trout Spawning Habitat in the Six Fathom Bank-Yankee Reef Lake Trout Sanctuary, Lake Huron

1992 ◽  
Vol 18 (1) ◽  
pp. 70-90 ◽  
Author(s):  
Thomas A. Edsall ◽  
Charles L. Brown ◽  
Gregory W. Kennedy ◽  
Thomas P. Poe
Keyword(s):  
Lake Trout ◽  
Lake Huron ◽  
Spawning Habitat
Sign in / Sign up

Export Citation Format

Share Document