Author: George Alan Kelly
Publisher:
ISBN:
Category : Animal introduction
Languages : en
Pages : 16
Book Description
Significant changes have occurred in the distribution of trout in streams of Great Smoky Mountains National Park since 1900. By the mid-1970's the original range of the native brook trout had been reduced by about 70% and the species was relegated to suboptimal habitat in head water streams. Most of the stream sections lost by brook trout became the territory of the introduced rainbow trout, which in 1977 occupied about 80% of the Park waters. After 1950, brown trout introduced in State waters outside the Park established reproducing populations in some 50 miles of stream formerly occupied only by rainbow trout. If current trends continue, the recovery of brook trout in Park water may be difficult, if not impossible, and brown trout may occupy much of the territory now held by rainbow trout.
Changes in Distribution of Trout in Great Smoky Mountains National Park, 1900-1977
Author: George Alan Kelly
Publisher:
ISBN:
Category : Animal introduction
Languages : en
Pages : 16
Book Description
Significant changes have occurred in the distribution of trout in streams of Great Smoky Mountains National Park since 1900. By the mid-1970's the original range of the native brook trout had been reduced by about 70% and the species was relegated to suboptimal habitat in head water streams. Most of the stream sections lost by brook trout became the territory of the introduced rainbow trout, which in 1977 occupied about 80% of the Park waters. After 1950, brown trout introduced in State waters outside the Park established reproducing populations in some 50 miles of stream formerly occupied only by rainbow trout. If current trends continue, the recovery of brook trout in Park water may be difficult, if not impossible, and brown trout may occupy much of the territory now held by rainbow trout.
Publisher:
ISBN:
Category : Animal introduction
Languages : en
Pages : 16
Book Description
Significant changes have occurred in the distribution of trout in streams of Great Smoky Mountains National Park since 1900. By the mid-1970's the original range of the native brook trout had been reduced by about 70% and the species was relegated to suboptimal habitat in head water streams. Most of the stream sections lost by brook trout became the territory of the introduced rainbow trout, which in 1977 occupied about 80% of the Park waters. After 1950, brown trout introduced in State waters outside the Park established reproducing populations in some 50 miles of stream formerly occupied only by rainbow trout. If current trends continue, the recovery of brook trout in Park water may be difficult, if not impossible, and brown trout may occupy much of the territory now held by rainbow trout.
Changes in Distribution of Trout in Great Smoky Mountains National Park, 1900-1977
Author: U.S. Fish and Wildlife Service
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
Book Description
Recent Historical and Projected Regional Trends of Trout in the Southeastern United States
Author: Patricia A. Flebbe
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 24
Book Description
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 24
Book Description
Wild Trout VII
Monthly Catalog of United States Government Publications
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 566
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 566
Book Description
Monthly Catalogue, United States Public Documents
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 836
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 836
Book Description
Habitat Suitability Index Model for Brook Trout in Streams of the Southern Blue Ridge Province
Author: Christopher J. Schmitt
Publisher:
ISBN:
Category : Brook trout
Languages : en
Pages : 66
Book Description
Publisher:
ISBN:
Category : Brook trout
Languages : en
Pages : 66
Book Description
Technical Papers of the U.S. Fish and Wildlife Service
Fisheries and Wildlife Research
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 214
Book Description
Report on activities in the divisions of research.
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 214
Book Description
Report on activities in the divisions of research.
Proximate Composition and Caloric Content of Eight Lake Michigan Fishes
Author: Donald V. Rottiers
Publisher:
ISBN:
Category : Calorimeters
Languages : en
Pages : 16
Book Description
The proximate composition (percentage lipid, water, fat-free dry material, ash) and caloric content of eight species of Lake Michigan fish were measured: lake trout, coho salmon, lake whitefish, bloater, alewife, rainbow smelt, deepwater sculpin, and slimy sculpin. Except for alewives, proximate composition and caloric content did not differ significantly between males and females. Although the caloric content of all species varied directly with lipid content and inversely with water content, an increase in lipid content did not always coincide with a proportional increasein caloric content when other components of fish composition were essentially unchanged. This observation suggests that the energy content of fish estimated from the proximate composition by using universal conversion factors may not necessarily be accurate.
Publisher:
ISBN:
Category : Calorimeters
Languages : en
Pages : 16
Book Description
The proximate composition (percentage lipid, water, fat-free dry material, ash) and caloric content of eight species of Lake Michigan fish were measured: lake trout, coho salmon, lake whitefish, bloater, alewife, rainbow smelt, deepwater sculpin, and slimy sculpin. Except for alewives, proximate composition and caloric content did not differ significantly between males and females. Although the caloric content of all species varied directly with lipid content and inversely with water content, an increase in lipid content did not always coincide with a proportional increasein caloric content when other components of fish composition were essentially unchanged. This observation suggests that the energy content of fish estimated from the proximate composition by using universal conversion factors may not necessarily be accurate.