Download or read book A Study of Settlement and Competition Between Age 0 and Age 1 Greenland Cod Gadus Ogac and Atlantic Cod Gadus Morhua Through 13C and 34S Isotopic Analysis written by Michelle Prochotsky and published by . This book was released on 2006 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interactions of Predators Habitat and Conspecifics on the Coastal Distribution of Age 0 Juvenile Cod Gadus Spp in Newfoundland written by Benjamin Jeffrey Laurel and published by . This book was released on 2003 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatial Distribution of Ages 0 and 1 Atlantic Cod Gadus Morhua Off the Eastern Massachusetts Coast written by Arnold B. Howe and published by . This book was released on 2002 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatial Risk written by Evelyn MacRobert and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The early life history stages of fish experience greater mortality rates than older conspecifics, primarily as a result of predation. Determining which habitats pose the highest predation "risk" can help in understanding habitat use by juvenile cod. In two field experiments, I examined spatial and temporal segregation of age-0 Atlantic (Gadus morhua) and Greenland (Gadus macrocephalus ogac) cod from piscivorous fishes. In Chapter 2, I used underwater video footage to construct a habitat map and locate age-0 Atlantic and Greenland cod in Newman Sound, Bonavista Bay, Newfoundland. Age-0 cod significantly associated with uniform eelgrass habitat, as opposed to less use of kelp or bare substrates, with all individuals observed within 1 m of eelgrass patches. In Chapter 3, I tested seasonal and diel habitat associations of 37 individuals of four known piscivorous fish species - age-1+ Atlantic and Greenland cod, cunner (Tautogolabrus adspersus), and shorthorn sculpin (Myoxocephalus scorpius) - using passive acoustic telemetry. Habitat use differed significantly among species. Season significantly affected habitat use for Greenland cod, cunner, and sculpin, whereas diel period significantly influenced habitat use for cunner. Greenland cod and cunner preferred eelgrass in the spring, then transitioned to deeper water habitats (kelp, sparse vegetation, and bare substrates) during summer and fall. Overall, piscivores primarily occupied shallow habitats in spring, and transitioned to deeper water habitats during summer and fall, outside the eelgrass beds frequented by age-0 cod. My thesis demonstrates spatial and temporal segregation of age-0 cod into nursery eelgrass habitat, apart from their predators.
Download or read book Dispersal and Home Range of Age 1 Greenland Cod Gadus Ogac in Newman Sound Newfoundland written by Melanie B. Shapiera and published by . This book was released on 2013 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Density of Juvenile Atlantic Cod Gadus Morhua and Greenland Cod G Ogac with Spatial Expansion and Recovery of Eelgrass Zostera Marina written by Margaret Warren and published by . This book was released on 2007 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dispersal and Home Range of Age 1 Greenland Cod Gadus Ogac in Newman Sound Newfoundland written by Melanie B. Shapiera and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natural Mortality and Movement of Juvenile Cod Gadus Spp Inhabiting Eelgrass Zostera Marina in Coastal Newfoundland Waters written by G. Lee Sheppard and published by . This book was released on 2005 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Managed Annihilation written by Dean Bavington and published by UBC Press. This book was released on 2011-01-01 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Newfoundland and Labrador cod fishery was once the most successful commercial fishery in the world. When it collapsed in 1992, many pointed to failures in management, such as uncontrolled harvesting, as likely culprits. Managed Annihilation makes the case that the idea of natural resource management itself was the problem. The collapse occurred when the fisheries were state-managed and still, two decades later, there is no recovery in sight. Although the collapse raised doubts among policy-makers about their ability to understand and control nature, their ultimate goal of control through management has not wavered and has been transferred from wild fish to fishermen and farmed cod.
Download or read book Atlantic Cod written by George A. Rose and published by John Wiley & Sons. This book was released on 2019-02-26 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive handbook, covering all aspects of the Atlantic cod including the biology, ecology, life histories, behaviour, commercial exploitation and conservation Not only is Atlantic cod one of the most valuable food fish in the world’s oceans, it is an important component of North Atlantic ecosystems and has been subject to much research into its biology, ecology and exploitation. After hundreds of years of exploitation, overfishing in the last half of the 20th Century caused many stocks to collapse, most famously the Northern cod stock off Newfoundland and Labrador, Canada. Since then, most cod stocks have been better researched and managed, but remain in a variety of states, from fully recovered to continued decline. This book, written by world experts, describes that research and management, and the importance of cod and its fisheries on North Atlantic cultures and economies, with impacts well beyond the range of the species. Atlantic Cod: Bio-Ecology of the Fish offers insightful chapter coverage of cod nomenclature, taxonomy, phylogeny and morphology; physiology and ecophysiology; reproduction and spawning behavior; early life history and pre-recruitment processes; migrations, movements and stock identity; feeding, growth and energetics; the place of cod in the ecosystem; the exploitation of cod through history and present day commercial fisheries and precautionary management for sustainable fisheries; impacts of climate change on cod biology and ecology; and the future of the species and its fisheries. Discusses the major commercial importance of Atlantic cod through history Provides a comprehensive treatment of the bio-ecology of the most researched and highly exploited fully marine species Examines how the decline (and recovery) of cod stocks is of great political and scientific interest An essential purchase for marine fisheries scientists Atlantic Cod: Bio-Ecology of the Fish is a vital book for all fisheries scientists, managers and fish biologists.
Download or read book Age Determination Methods for Northwest Atlantic Species Atlantic Cod Gadus Morhua written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Northeast Fisheries Science Center presents the section of "Age Determination Methods for Northwest Atlantic Species," on Atlantic cod, Gadus morhua, by J. Penttila. A major problem in age determination of cod is distinguishing between the settling check and the first annulus. Migration pattern indicate movement toward the south and west in winter and early spring and towards the north and east in late spring and summer.
Download or read book Spawning and Life History Information for North Atlantic Cod Stocks written by K. M. Brander and published by . This book was released on 2005 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relative Strength of the 2001 and 2002 Year classes from Nearshore Surveys of Demersal Age 0 and 1 Atlantic Cod Gadus Morhua in NAFO Division 3KL and in Newman Sound Bonavista Bay written by Robert S. Gregory and published by . This book was released on 2004 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biology and Ecology of Atlantic Cod written by Nataliia Kulatska and published by CRC Press. This book was released on 2024-10-31 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlantic cod is an important fish species in human history and continues to be a major influence on North Atlantic fisheries management, as stock collapses and recoveries impact coastal communities and shelf sea food webs. This book provides an overview of Atlantic cod biology and ecology, focussing on regional differences in life-history and stock dynamics that affect productivity and the challenges faced by management. By comparing the success of management approaches and the local influence of changing climate and food webs, the book highlights the different pressures facing stocks and identifies knowledge gaps across the species’ range.
Download or read book Between patch Movement Behaviour of Juvenile Atlantic Cod gadus Morhua written by Mary R. Ryan and published by . This book was released on 2009 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Susceptibility of Marked Age 0 Atlantic Cod Gadus Morhua to Predation During Mark recapture Studies written by Adam E. Ogilvie and published by . This book was released on 2000 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Niche Partitioning in Sympatric Greenland Cod Gadus Ogac and Atlantic Cod Gadus Morhua in Coastal Newfoundland written by David Craig Knickle and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
