Download or read book Trophic Dynamics of Flathead Catfish in the Missouri River Bordering Nebraska written by Dylan R. Turner and published by . This book was released on 2017 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the trophic dynamics of large, riverine ecosystems is complex and requires knowledge from several inputs and outputs of the ecosystem. Most riverine ecosystems have been altered in some way whether through damming, channelizing, or diverting water. The Missouri River is not immune to these anthropogenic alterations. The river has dams throughout its middle portion and is channelized from Sioux City, Iowa to its confluence with the Mississippi River. Flathead Catfish pylodictus olivarius are one of the most ecologically harmful introduced species but little research has looked at the influence native populations of Flathead Catfish have on native prey populations where river modification has occurred. I collected Flathead Catfish diet samples and analyzed potential and realized prey caloric content to answer questions on how this abundant, apex predator influences prey populations within their native range. Flathead Catfish had similar diets among three distinct seasons (spring, summer, fall), selected for three fish species (Common Carp, Flathead Catfish, and Shovelnose Sturgeon) and two macroinvertebrate taxa (Ephemeroptera and Plecoptera), and consumed prey resources in similar quantities to introduced populations. The caloric values for prey items varied but selected species did not have highest nor lowest values. Using our diet indices and consumption rates, I estimated that Flathead Catfish consumed on average 175.3 ± 2.1 kcals (dry weight) per individual per day, equivalent to around 220.9 kg of biomass consumed by the entire sample population daily. This research will help researchers better understand the trophic dynamics within the Missouri River ecosystem.
Download or read book Fish and Fish Food Organisms in Various Habitats of the Missouri River in South Dakota Nebraska and Iowa written by Larry W. Kallemeyn and published by . This book was released on 1977 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamics and Growth of Commercially Exploited Catfish Populations in the Lower Missouri River written by Daniel "V." Ragland and published by . This book was released on 1972 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology and Management of Channel Catfish Ictalurus Punctatus and Flathead Catfish Pylodictis Olivaris Populations in the Middle Missouri River NE written by Cameron Wesley Goble and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Management of Channel Catfish Ictalurus Punctatus in the Missouri River Nebraska written by Brandon L. Eder and published by . This book was released on 2014 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: The popularity of catfish Ictaluridae nationally as a sport fish is well documented and angling for catfish on the Missouri River in Nebraska (NMR) is especially popular. Catfish monitoring program by the Nebraska Game and Parks Commission (NGPC) began in 1974 and several short-term evaluations of Channel Catfish population dynamics have been performed. However, no long term analyses of population characteristics have been conducted since the early 1990s. The focus of this research was to summarize the status of Channel Catfish populations in the NMR and give recommendations for future management. I summarized population characteristics, modeled length limit regulations, and assessed the feasibility of a survey design aimed at gathering effort and catch data from setline anglers. Population characteristics varied among the four reaches studied. Channel Catfish in the upper unchannelized reach had relatively low mortality, moderate population densities and a long life span. The lower unchannelized reach had a population of small, slow growing Channel Catfish with high mortality rates. Population characteristics in the upper channelized reach were similar to those of the lower unchannelized reach except relative abundance was greater. The lower channelized reach had the highest mortality and the fastest growing, shortest lived fish in the study. Modeling revealed all reaches except the lower unchannelized reach could benefit from a 380-mm minimum length limit. In all cases, mean total length, mean weight, and yield would increase with a minimum length limit. A maximum length limit would likely not be effective for growing trophy sized fish in the upper unchannelized reach. Setlining is an unknown aspect of the Missouri River catfish fishery, and methods described in this study appear to be a feasible alternative to traditional creel surveys for estimating setline effort and catch.
Download or read book Annual Report written by Iowa Cooperative Fish and Wildlife Research Unit and published by . This book was released on 1996 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Freshwater Fishes of North America written by Melvin L. Warren, Jr. and published by Johns Hopkins University Press. This book was released on 2020-07-14 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt: H. Wilson
Download or read book Methods in Stream Ecology written by F. Richard Hauer and published by Academic Press. This book was released on 2011-04-27 with total page 894 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods in Stream Ecology, Second Edition, provides a complete series of field and laboratory protocols in stream ecology that are ideal for teaching or conducting research. This updated edition reflects recent advances in the technology associated with ecological assessment of streams, including remote sensing. In addition, the relationship between stream flow and alluviation has been added, and a new chapter on riparian zones is also included. The book features exercises in each chapter; detailed instructions, illustrations, formulae, and data sheets for in-field research for students; and taxanomic keys to common stream invertebrates and algae. With a student-friendly price, this book is key for all students and researchers in stream and freshwater ecology, freshwater biology, marine ecology, and river ecology. This text is also supportive as a supplementary text for courses in watershed ecology/science, hydrology, fluvial geomorphology, and landscape ecology. - Exercises in each chapter - Detailed instructions, illustrations, formulae, and data sheets for in-field research for students - Taxanomic keys to common stream invertebrates and algae - Link from Chapter 22: FISH COMMUNITY COMPOSITION to an interactive program for assessing and modeling fish numbers
Download or read book Toxicological Profile for Chlordane written by and published by . This book was released on 1994 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Planar PCB Hazards to Fish Wildlife and Invertebrates written by Ronald Eisler and published by . This book was released on 1996 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fish and Fisheries Management in Lakes and Reservoirs written by and published by . This book was released on 1993 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Suspended Solids and Sediment of Reproduction and Early Life of Warmwater Fishes written by Corvallis Environmental Research Laboratory and published by . This book was released on 1979 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book DDT written by United States. Environmental Protection Agency and published by . This book was released on 1975 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biology and Control of Aquatic Plants written by Lyn A. Gettys and published by . This book was released on 2009 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biology and Control of Aquatic Plants: A Best Management Practices Handbook is the fourth edition of a handbook produced by the not for profit Aquatic Ecosystem Restoration Foundation (AERF). The mission of the AERF is to support research and development which provides strategies and techniques for the environmentally and scientifically sound management, conservation and restoration of aquatic ecosystems. One way the Foundation accomplishes this mission is by producing this handbook to provide information to the public regarding the benefits of aquatic ecosystem conservation and aquatic plant management. The first, second and third editions of this handbook became some of the most widely consulted references in the aquatic plant management community. This fourth edition has been specifically designed with water resource managers, water management associations, homeowners and customers and operators of aquatic plant management companies and districts in mind. Our goal in preparing this handbook is to provide basic, scientifically sound information to assist decision-makers with their water management questions.
Download or read book Inland Fisheries Management in North America written by Christopher C. Kohler and published by . This book was released on 1999 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The book covers fishery assessments, habitat and community manipulations, and common practices for managing stream, river, lake, and anadromous fisheries. Chapters on history; ecosystem management; management processes; communications with the public; introduced, undesirable, and endangered species; and the legal and regulatory frameworks provide the context for modern fisheries management." From fisheries.org.
Download or read book Managing the Impacts of Carp written by John Koehn and published by . This book was released on 2000 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive view of the history of carp in Australia, their biology, the damage they cause and community attitudes to these problems and their solutions. Key strategies for successful carp management are recommended and illustrated by case studies.
Download or read book Ecology and Conservation of Great Plains Vertebrates written by Fritz L. Knopf and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: The frontier images of America embrace endless horizons, majestic herds of native ungulates, and romanticized life-styles of nomadie peoples. The images were mere reflections of vertebrates living in harmony in an ecosystem driven by the unpre dictable local and regional effects of drought, frre, and grazing. Those effects, often referred to as ecological "disturbanees," are rather the driving forces on which species depended to create the spatial and temporal heterogeneity that favored ecological prerequisites for survival. Alandscape viewed by European descendants as monotony interrupted only by extremes in weather and commonly referred to as the "Great American Desert," this country was to be rushed through and cursed, a barrier that hindered access to the deep soils of the Oregon country, the rich minerals of California and Colorado, and the religious freedom sought in Utah. Those who stayed (for lack of resources or stamina) spent a century trying to moderate the ecological dynamics of Great Plains prairies by suppressing fires, planting trees and exotic grasses, poisoning rodents, diverting waters, and homogenizing the dynamies of grazing with endless fences-all creating bound an otherwise boundless vista. aries in Historically, travelers and settlers referred to the area of tallgrasses along the western edge of the deciduous forest and extending midway across Kansas as the "True Prairie. " The grasses thlnned and became shorter to the west, an area known then as the Great Plains.
