Author: Kevin Paul Kenow
Publisher:
ISBN:
Category :
Languages : en
Pages : 208
Book Description
Development of a Water Management Model for Maximum Redhead Use of Subimpoundments on Horicon National Wildlife Refuge
Resource Publication
Diseases of Domestic Rabbits
Author: Edward L. Vail
Publisher:
ISBN:
Category : Natural resources
Languages : en
Pages : 32
Book Description
Publisher:
ISBN:
Category : Natural resources
Languages : en
Pages : 32
Book Description
Evaluation of Three Types of Fish Rearing Ponds
Author: Roger E. Burrows
Publisher:
ISBN:
Category : Fish ponds
Languages : en
Pages : 32
Book Description
Of the ponds studied, no one type could be considered superior under all conditions of fish-cultural operations. The Foster-Lucas pond, however, was definitely inferior to either the circular or raceway type.
Publisher:
ISBN:
Category : Fish ponds
Languages : en
Pages : 32
Book Description
Of the ponds studied, no one type could be considered superior under all conditions of fish-cultural operations. The Foster-Lucas pond, however, was definitely inferior to either the circular or raceway type.
A Survey of Former Shad Streams in Maine
Author: Clyde C. Taylor
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 38
Book Description
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 38
Book Description
Atlas of the Spawning and Nursery Areas of Great Lakes Fishes: Spawning and nursery areas of Great Lakes fishes, a summary by geographic area
Author: U.S. Fish and Wildlife Service. Office of Biological Services
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 170
Book Description
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 170
Book Description
Classification of Wetlands of the United States
Author: United States. Fish and Wildlife Service. Wetlands Classification Committee
Publisher:
ISBN:
Category : Wetlands
Languages : en
Pages : 20
Book Description
Publisher:
ISBN:
Category : Wetlands
Languages : en
Pages : 20
Book Description
Ecology of Daphnia in Bull Shoals Reservoir
Author: Richard L. Applegate
Publisher:
ISBN:
Category : Cladocera
Languages : en
Pages : 36
Book Description
Life histories of Daphnia galeata mendotae, D. retrocurva, D. parvula, D. ambigua, and D. schoedleri are compared with year class strength and food of threadfin shad in Bull Shoals Reservoir from 1965 to 1967. Maximum population density of daphnids was in April, May, and June. Populations declined to insignificant densities throughout the rest of the year. Declines coincided with the inclusion of Daphnia in the diets of threadfin shad smaller than 14 mm. Declines in the summer of 1967 coincided with both young shad predation and high Leptodora kindtii density. Population changes associated with declining year class strength of threadfin shad were an increase of the large D. schoedleri and Leptodora kindtii from nondetectable or trace densities to relatively large populations, and increase from nondetectable densities of daphnids in the summer to detectable densities, and a twofold to threefold increase in the summer standing crops of Bosmina longirostris.
Publisher:
ISBN:
Category : Cladocera
Languages : en
Pages : 36
Book Description
Life histories of Daphnia galeata mendotae, D. retrocurva, D. parvula, D. ambigua, and D. schoedleri are compared with year class strength and food of threadfin shad in Bull Shoals Reservoir from 1965 to 1967. Maximum population density of daphnids was in April, May, and June. Populations declined to insignificant densities throughout the rest of the year. Declines coincided with the inclusion of Daphnia in the diets of threadfin shad smaller than 14 mm. Declines in the summer of 1967 coincided with both young shad predation and high Leptodora kindtii density. Population changes associated with declining year class strength of threadfin shad were an increase of the large D. schoedleri and Leptodora kindtii from nondetectable or trace densities to relatively large populations, and increase from nondetectable densities of daphnids in the summer to detectable densities, and a twofold to threefold increase in the summer standing crops of Bosmina longirostris.
Abstracts of Publications
Author: National Science Foundation (U.S.). Division of Intergovernmental Science & Public Technology
Publisher:
ISBN:
Category : Science and state
Languages : en
Pages : 224
Book Description
Summarizes the publications that have resulted from the activities that have been sponsored in State and local governments and in technologically-oriented institutions around the country in the Intergovernmental Science Program.
Publisher:
ISBN:
Category : Science and state
Languages : en
Pages : 224
Book Description
Summarizes the publications that have resulted from the activities that have been sponsored in State and local governments and in technologically-oriented institutions around the country in the Intergovernmental Science Program.
Wildlife Research Report
Author:
Publisher:
ISBN:
Category : Wildlife conservation
Languages : en
Pages : 52
Book Description
Publisher:
ISBN:
Category : Wildlife conservation
Languages : en
Pages : 52
Book Description