Download or read book Linking Reservoir Characteristics to Striped Bass Population Dynamics written by Stephen Wayne Parker and published by . This book was released on 2019 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Linking Estuarine Water Quality and Impacts on Living Resources written by Charles C. Coutant and published by . This book was released on 1987 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study on the Population Dynamics of Striped Bass Morone Saxatilis Walbaum in the San Francisco Bay Estuary written by Prichar Sommani and published by . This book was released on 1972 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Potential Effects of Maternal Contribution on Egg and Larva Population Dynamics of Striped Bass written by and published by . This book was released on 1991 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have used a bioenergetically-driven, individual-based model (IBM) of striped bass as a framework for synthesizing available information on population biology and quantifying, in a relative sense, factors that potentially affect year class success. The IBM has been configured to simulate environmental conditions experienced by several striped bass populations; i.e., in the Potomac River, MD; in Hudson River, NY; in the Santee-Cooper River System, SC, and; in the San Joaquin-Sacramento River System CA. These sites represent extremes in the geographic distribution and thus, environmental variability of striped bass spawning. At each location, data describing the physio-chemical and biological characteristics of the spawning population and nursery area are being collected and synthesized by means of a prioritized, directed field sampling program that is organized by the individual-based recruitment model. Here, we employ the striped bass IBM configured for the Potomac River, MD from spawning into the larval period to evaluate the potential for maternal contribution to affect larva survival and growth. Model simulations in which the size distribution and spawning day of females are altered indicate that larva survival is enhanced (3.3-fold increase) when a high fraction of females in the spawning population are large. Larva stage duration also is less ({bar X} = 18.4 d and 22.2 d) when large and small females, respectively, are mothers in simulations. Although inconclusive, these preliminary results for Potomac River striped bass suggest that the effects of female size, timing of spawning nad maternal contribution on recruitment dynamics potentially are important and illustrate our approach to the study of recruitment in striped bass. We hope to use the model, field collections and management alternatives that vary from site to site, in an iterative manner for some time to come. 54 refs., 4 figs., 1 tab.

Download or read book Are Marine Migrations of Striped Bass Genetically Pre determined written by Wesley S. Patrick and published by . This book was released on 2010 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Striped bass, Morone saxatilis, is one of the most thoroughly studied anadromous fish species in the United States, with records governing the management of the species dating back to the late 1600s. However, management of this species has been difficult because of the species' anadromous behavior that takes it between fresh and marine waters, crossing numerous geopolitical boundaries. In the 20th century, the fishery experienced two dramatic declines in abundance. Studying the fishery after the declines resulted in major advancements in scientific understanding and management for this species, and striped bass is now an example of a successfully rebuilt fishery, key questions about population dynamics and migration patterns still persist. These unanswered questions reduce confidence in managing the species as a whole, and instead encouraging precautionary measures applied to small geographic areas, such as a natal river. This dissertation begins with a thorough review of the history of striped bass, including the key scientific findings and management measures instrumental in its recent recovery. Chapter 2 explores how scientists have approached the major challenge in striped bass management: defining the management unit so allocations can be made fairly and sustainably. The array of genetic techniques that have been employed, their limitations, and the populations studied with those techniques, is reviewed. Among the studies reviewed is one suggesting North Carolina striped bass migration may be genetically linked; this suggestion forms the basis for this dissertation's hypothesis. Answering this question can help resource managers better understand population dynamics, genetic interplay, and migration patterns - important for creating effective management and fair allocation between states. Chapter 3 explores the biotic and abiotic factors that can influence the results of an otolith microchemistry analysis, and Chapter 4 contains the discussion of the findings about the 112 striped bass examined. With biases accounted for, this dissertation concludes that marine migration was not linked to the genes examined. However, an interesting post-hoc observation can be made: though the behavior was not found to be genetically linked, striped bass in the first year of life proved to be residents, stagers, or sprinters, with different growth rates associated with these behaviors.

Download or read book Aspects of the Population Dynamics of Striped Bass Morone Saxatilis Spawning in Maryland Tributaries of the Chesapeake Bay written by Lawrence C. Kohlenstein and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Population Dynamics of White Bass and Striped Bass X White Bass Hybrids in Lake Carl Blackwell Oklahoma written by Maurice Ibechema Muoneke and published by . This book was released on 1987 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Population and Trophic Dynamics of Striped Bass and Blueback Herring in the Connecticut River written by Justin P Davis and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Case studies of the ramifications of predator management for prey population dynamics can play a valuable role in developing ecosystem fisheries management. My dissertation focuses on the predator-prey interaction between Striped Bass (Morone saxatilis), an abundant predatory finfish, and an imperiled prey population of anadromous Blueback Herring (Alosa aestivalis). Annual returns of Blueback Herring to the Holyoke Dam on the Connecticut River in southern New England collapsed during the 1980-2000s, coincident with Striped Bass recovery. I studied the abundance and demography of both species in the Connecticut River during 2005-08, measured predation levels, and surveyed the in-river recreational Striped Bass fishery. Herring in 2005-08 were on average younger, smaller, and less likely to be repeat spawners than during the 1960s. These findings suggest elevated mortality operating on adult herring, consistent with other contemporary studies of river herring runs. I estimated that approximately 125,000 Striped Bass were present in the upper 64 km of the river stretch below the Holyoke Dam in spring 2008, and that this predator contingent was capable of consuming 200,000-800,000 adult herring annually. I also estimated that increased in-river recreational Striped Bass harvests might reduce annual predatory losses by 4-10%. I constructed a stage-structured model of the Blueback Herring population spawning above the Holyoke Dam, and used it to a) assess whether Striped Bass predation could explain the collapse of the herring run to the Holyoke Dam, and b) whether reductions in adult herring mortality effected through increased Striped Bass harvest could substantially improve recovery prospects. Model simulations suggested that Striped Bass predation made a substantial contribution to the collapse of the Holyoke herring run: over 50% of model simulations predicted a run crash, and metrics of population resilience and reproductive potential were greatly reduced in the presence of Striped Bass predation. Increased in-river harvests of Striped Bass offer potential to conserve Blueback Herring under some scenarios; however, the requisite harvest levels appear improbable given the observed intensity of the fishery. This study will inform future efforts to conserve river herring and manage Striped Bass populations, and illustrates the trade-offs inherent to ecosystem-based management.

Download or read book Federal Aid in Fish and Wildlife Restoration written by and published by . This book was released on 1973 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Neuse River Striped Bass Monitoring Programs Population Dynamics and Recovery Strategies written by Kyle T. Rachels and published by . This book was released on 2015 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kerr Reservoir Striped Bass Population Study written by David K. Whitehurst and published by . This book was released on 1982 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hybrid Striped Bass Population Characteristics and Community Impacts in Farm Ponds written by Jason Wesley Neal and published by . This book was released on 1996 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Habitat Heterogeneity Concentrates Predators in the Seascape written by Cristina G. Kennedy and published by . This book was released on 2013 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: Predators are key components of aquatic ecosystems and innovative approaches to understanding their spatial distribution are imperative for research, effective management, and conservation. Discontinuities, created by abrupt changes between two unlike entities, are irregularly-distributed, intermediate-scale features that can have a disproportionate effect on organismal distribution within the seascape. Here I use the discontinuity concept to relate the distribution of a predator, striped bass (Morone saxatilis), to physical features within Plum Island Estuary (PIE), MA. I mapped the distribution of 50 acoustically-tagged striped bass during four monthly surveys at 40 sites to evaluate if heterogeneity in physical features concentrated predators. All striped bass survived tagging, were coastal migrants, displayed seasonal residency within PIE, and moved freely throughout the estuary. However, these highly mobile predators were not evenly distributed. Specifically, striped bass were clustered in the middle region of PIE in response to sandbar area, intermediate bottom unevenness, channel networks, and, to a lesser extent, confluences and drop-offs. The highest predator counts occurred at sites with the greatest additive habitat complexity. I measured 23 geomorphic metrics at 40 sites within the seascape to characterize the spatial patterns of confluences, drop-offs, bathymetry and land features. Then, I mapped integrated measurements of multimetric physical features to reveal distinct spatial trends in physical complexity of the estuary. By expanding the discontinuity concept and combining irregularly-distributed, intermediate-scale physical features with smaller-scale, traditional fish habitat methodologies, I revealed consistent and ecologically-meaningful patterns within a north temperate estuarine seascape.

Download or read book Striped Bass Research Study written by Jack L. Harper and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Population Parameters of Striped Bass X White Bass Hybrids in a Turbid Oklahoma Reservoir written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Federal Aid in Fish and Wildlife Restoration Annual Report on Dingell Johnson and Pittman Robertson Programs written by United States. Bureau of Sport Fisheries and Wildlife and published by . This book was released on 1970 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1990 with total page 1162 pages. Available in PDF, EPUB and Kindle. Book excerpt: