Author: Richard J. HallockPublisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 102
Book Description
Migrations of Adult King Salmon Oncorhynchus Tshawytscha in the San Joaquin Delta
Author: Richard J. HallockPublisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 102
Book Description
The Needs of Chinook Salmon, Oncorhynchus Tshawytscha in the Sacramento-San Joaquin Estuary
Author: Delta Wetlands Project, San Joaquin County, Contra Costa County
Author: Ecological Studies of the Sacramento-San Joaquin Delta
Author: California. Department of Fish and GamePublisher:
ISBN:
Category : Delta Fish and Wildlife Protection Study
Languages : en
Pages : 100
Book Description
The Control of Fish Migration
Author: R.J.F. SmithPublisher: Springer Science & Business Media
ISBN: 3642823483
Category : Science
Languages : en
Pages : 258
Book Description
Fish migration is important and spectacular. Migratory fish gather energy in one portion of the environment and transport it to other areas, where it often becomes available to humans or to other elements in the ecosystem. Migration brings fish into situations that allow easy harvest as they concentrate along migration routes. Their journeys also make them vulnerable to human intereference at critical points along their route. Salmon, for example, may harvest plankton in the open ocean and transport that food energy to coastal and inland regions, where it is captured by fisheries or deposited in inland streams and utilized by the flora and fauna of the region. These salmon are able to complete journeys of thousands of kilometers from their natal streams to oceanic feeding grounds and back to the same home streams, an accomplishment that strains our credi bili ty . We now understand some of the timing and guiding stimuli used in these migrations, and mechanisms can be logically proposed, on the basis of the established abilities of fishes, to account for the unexplained portions of the migrations. There is no single factor guiding these fish. Instead, they are dependent on the presence in their environment of a great variety of appropriate orienting and timing stimuli. These stimuli are vulnerable to human interference. The more widespread and easily available the information on these requirements, the more readily fish can be protected from such interference.
Sport Fishery Abstracts
Author: The Ecology of the Sacramento-San Joaquin Delta
Author: Bruce HerboldPublisher:
ISBN:
Category : Ecology
Languages : en
Pages : 124
Book Description
Grant-in-aid for Fisheries Program Activities
Author: United States. National Marine Fisheries ServicePublisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 168
Book Description
Authorization for Incidental Take and Implementation of a Multiple Species Aquatic Habitat Conservation Plan and Candidate Conservation Agreement with Assurances
Author: Grant-in-aid for Fisheries Program Activities
Author: United States. National Marine Fisheries Service. Grant-in-aid StaffPublisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 168
Book Description