Author: Publisher:
ISBN:
Category : Marine fishes
Languages : en
Pages : 304
Book Description
Atlas of Abundance and Distribution Patterns of Ichthyoplankton from the Northeast Pacific Ocean and Bering Sea Ecosystems Based on Research Conducted by the Alaska Fisheries Science Center (1972-1996)
Author: Long-term Ecological Change in the Northern Gulf of Alaska
Author: R.B. SpiesPublisher: Elsevier
ISBN: 0080469426
Category : Nature
Languages : en
Pages : 609
Book Description
This comprehensive text is a major synthesis on ecological change in the Gulf of Alaska. It encompasses the structural and annual changes, forces of change, long-ecological changes in the atmosphere and ocean, plankton, fish, birds and mammals, and the effects of the 1989 Exxon Valdez Oil Spill. With 5 major sections, Long-term Ecological Change in the Northern Gulf of Alaska first describes the physical features, the atmosphere and physical oceanography, the annual production cycle, the forage base for higher animals and trophic transfer, and the adaptations for survival in this changing environment for 9 portal species. Then, the major forces of change are introduced: climate, geophysics, fisheries and harvesting, species interactions, disease and contaminants. Next, the long-term records of change in physical factors and biological populations are presented, as well as the potential reasons for the biological changes. Following is the history of the Exxon Valdez oil spill and its long-term effects. And, finally, the emergent properties of the ecosystem are discussed and an attempt is made to weigh the importance of the major forcing factors in terms of their temporal and spatial scales of influence.* Examines important data on long-term change in the ecosystem and the forcing factors that are responsible for it * Provides an account of the 1989 Exxon Valdez oil spill with emphasis on the long-term effects * Describes the effects of climate change, geophysical change, species interactions, harvesting, disease, the 1989 oil spill, and marine contaminants on key populations of marine organisms
Gulf of Alaska Navy Training Activities
Author: Fishery Bulletin
Author: Guide to the Identification of Larval and Early Juvenile Pricklebacks (Perciformes: Zoarcoidei: Stichaeidae) in the Northeastern Pacific Ocean and Bering Sea
Author: Ann C. MataresePublisher:
ISBN:
Category : Stichaeidae
Languages : en
Pages : 104
Book Description
Larval Development and Identification of the Genus Triglops (Scorpaeniformes: Cottidae)
Author: Deborah M. BloodPublisher:
ISBN:
Category : Cottidae
Languages : en
Pages : 56
Book Description
Prior to Pietsch's (1993) revision of the genus Triglops, identification of their larvae was difficult; six species cooccur in the eastern North Pacific Ocean and Bering Sea and three co-occur in the western North Atlantic Ocean. We examined larvae from collections of the Alaska Fisheries Science Center and Atlantic Reference Centre and used updated meristic data, pigment patterns, and morphological characters to identify larvae of Triglops forficatus, T. macellus, T. murrayi, T. nybelini, T. pingeli, and T. scepticus; larvae of T. metopias, T. dorothy, T. jordani, and T. xenostethus have yet to be identified and are thus not included in this paper. Larval Triglops are characterized by a high myomere count (42-54), heavy dorsolateral pigmentation on the gut, and a pointed snout. Among species co-occurring in the eastern North Pacific Ocean, T. forficatus, T. macellus, and T. pingeli larvae are distinguished from each other by meristic counts and presence or absence of a series of postanal ventral melanophores. Triglops scepticus is differentiated from other eastern North Pacific Ocean larvae by having 0-3 postanal ventral melanophores, a large eye, and a large body depth. Among species co-occurring in the western North Atlantic Ocean, T. murrayi and T. pingeli larvae are distinguished from each other by meristic counts (vertebrae, dorsal-fin rays, and anal-fin rays once formed), number of postanal ventral melanophores, and first appearance and size of head spines. Triglops nybelini is distinguished from T. murrayi and T. pingeli by a large eye, pigment on the lateral line and dorsal midline in flexion larvae, and a greater number of dorsal-fin rays and pectoral-fin rays once formed.
Resource Inventory of Marine and Estuarine Fishes of the West Coast and Alaska
Author: California Cooperative Oceanic Fisheries Investigations, Progress Report
Author: California Cooperative Oceanic Fisheries Investigations (Program)Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 228
Book Description
Spawning, Egg Development, and Early Life History Dynamics of Arrowtooth Flounder (Atheresthes Stomias) in the Gulf of Alaska
Author: Deborah M. BloodPublisher:
ISBN:
Category : Arrowtooth flounder
Languages : en
Pages : 44
Book Description
Capelin -- what are They Good For? Biology, Management, and the Ecological Role of Capelin
Author: International Council for the Exploration of the SeaPublisher:
ISBN:
Category : Capelin
Languages : en
Pages : 292
Book Description