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Monday, April 13, 2020 | History

2 edition of examination of some physical and biological impacts of dredging in estuaries found in the catalog.

examination of some physical and biological impacts of dredging in estuaries

Larry S. Slotta

examination of some physical and biological impacts of dredging in estuaries

interim progress report

by Larry S. Slotta

  • 335 Want to read
  • 22 Currently reading

Published by Oregon State University : available from National Technical Information Service, Springfield, Va. in Corvallis .
Written in English

    Subjects:
  • Estuarine ecology.,
  • Dredging (Biology) -- Environmental aspects.

  • Edition Notes

    Submitted to the Division of Environmental Systems and Resources (RANN), National Science Foundation, NSF RANN grant GI 34346.

    StatementL. S. Slotta, principal investigator ... [et al.].
    SeriesOregon State University interdisciplinary studies of the School of Engineering and Oceanography
    ContributionsNational Science Foundation (U.S.). Research Applied to National Needs Program.
    The Physical Object
    Pagination257 p. :
    Number of Pages257
    ID Numbers
    Open LibraryOL14129438M

    Ð All estuaries are embayments Ð But embayments without rivers " estuaries ¥ Fresh/salt water boundary af fects physical state and chemical reactions of pollutants 4. Fjord estuaries ¥ Like a salt wedge but some special traits Ð Carved by glacier: Deep, narrow, straight File Size: 5MB. This study investigates the impact of sand dredging activities on coastal ecosystem and community survival around Ibeshe area of the Lagos Lagoon, Nigeria. Surface water and bottom sediment samples were collected from locations partitioned into Dredged Area (DA) and Undredged Area (UA) in the lagoon for laboratory analyses. Questionnaires were administered Cited by: 1.


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examination of some physical and biological impacts of dredging in estuaries by Larry S. Slotta Download PDF EPUB FB2

This book is a must read for anyone on a marine based course or work within the world of Estuaries. Estuaries and Sediment Dynamics may not be the most interesting subject in the world but this book keeps the reader informed and interested throughout every by: Many estuaries worldwide are becoming more urbanised with heavier traffic in the waterways, requiring continuous channel deepening and larger ports, and increasing suspended sediment concentration (SSC).

An example of a heavily impacted estuary where SSC levels are rising is the Ems Estuary, located between the Netherlands and by: Associated physical alterations, such as dredging, damming, and bulkheading, change the natural flow of fresh water to estuaries, dramatically affecting water quality.

Toxic substances and excess nutrients contribute to fish diseases, algal blooms, and low dissolved oxygen and can pose a threat to the health of humans and estuarine wildlife. Estuaries are affected by the high and low tides, exposing sediments/mudflats, increasing it's biodiversity Humphrey the Whale Humphrey was a whale who went up various rivers and estuaries, eventually playing classical music from the desired direction turned him around.

An Examination of Some Physical and Biological Impacts of Dredging in Estuaries (Corvallis, Oregon: School of Oceanography, Oregon State University, ).

Google Scholar Cited by: 3. Estuaries are bodies of water and adjacent wetlands found in areas where rivers flow into much larger bodies of water. Most estuaries are formed when a river meets the sea, and the water in these estuaries is a mixture of freshwater and saltwater from the ocean.

biological balance. In the past decade, New Zealand researchers have unravelled part of the complex story of how estuaries handle sediments.

Three important physical features play a part: tides, waves and rivers. Tides Tidal currents provide the steady supply of energy that moves sediments into and out of estuaries. Most of New Zealand’s File Size: 1MB. impacts on estuaries are those associated with the construction of shoreline structures (e.g.

bulkheads, boat ramps, docks and piers), activities at marinas and harbours, and dredging to. Dredge and fill activities in estuaries have many environmental effects, most, although not all, of them deleterious.

These effects include reduced light penetration by increased turbidity; altered tidal exchange, mixing, and circulation; reduced nutrient outflow from marshes and swamps; increased saltwater intrusion; and creation of an environment highly susceptible Cited by: The impact of dredging works in coastal waters: a review of the sensitivity to disturbance and subsequent recovery of biological resources on the sea bed.

IMPACT OF DREDGING WORKS IN COASTAL WATERS 3 Figure 1 Simplified empirical carbon flow dia gram for the phytoplankton -based ecosystem of the shelf waters of the North Sea. Note that, of the g C m-2 yr 1 of sea surface produced by the phytoplankton, the yield to man through pelagic food webs and pelagic fish is estimated to be gCited by: UNESCO – EOLSS SAMPLE CHAPTERS FRESH SURFACE WATER - Vol.

III - Dredging in Rivers and Estuaries - Rudolf van den Bosch ©Encyclopedia of Life Support Systems (EOLSS) 1. River Water and Uses Here, on earth, water is one of File Size: KB. Estuarine, Coastal and Shelf Science is an international multidisciplinary journal devoted to the analysis of saline water phenomena ranging from the outer edge of the continental shelf to the upper limits of the tidal zone.

The journal provides a unique forum, unifying the multidisciplinary. ENVIRONMENTAL ASPECTS OF DREDGING IN ESTUARIES. Salt marsh estuarine environments along the Intracoastal Waterway of the southeastern Atlantic coast were studied to determine the environmental effects of dredging in these areas.

The term “bucket dredge” can have different meanings. In Europe, a common type of bucket dredge is the bucket ladder (), which excavates the bottom by a chain of buckets that moves around a large pivoting ladder, all in the vertical al brought to the surface by the buckets is dumped on a chute and falls into hopper barges brought alongside.

Highlights Intensity, duration and frequency of sediment disturbance determine dredging impacts on corals. Sediment stress effects have been investigated in ∼10% of known reef-building coral species.

Tolerance limits of coral reefs to suspended sediment vary widely from mg L −1. Tolerance limits of corals to sedimentation vary widely from mg cm −2 day −1 Cited by: Estuaries is a comprehensive introductory text emphasizing the physical processes involved in the mixing of sea and river water and the transport of fine sediments within the complex estuarine topographic context.

The theoretical and mathematical formulation of these processes are treated at a fairly elementary level, and are used to develop a foundation for more extensive study.

Ecology of Estuaries I. Importance of Estuaries II. Physical Conditions III. Habitats IV. Biological Attributes & Interactions V. Threats to Estuaries I. Importance of Estuaries A. Productivity B. Nursery Areas C. Filtration D. Spawning Sites E. Migration Routes F.

Resting and Feeding Areas A. Productivity • high levels of nutrients. effects, pollution, habitat loss and alteration, future impacts INTRODUCTION Among the most important environments of the coastal zone are estuaries, which constitute transition zones or ecotones, where fresh water from land drainage mixes with seawater, creating some of the most biologically productive areas on by: ration is the primary forcing agent in some arid systems, and causes the develop-ment of longitudinal density gradients, inanalogy to temperate estuaries.

Most of this book deals with temperate estuaries, but low-inflow estuaries are discussed in detail in Chapter 9. Classification of estuaries on the basis of water balance File Size: KB. environments, has been identified as a region of high biological diversity and elevated production.

Results of studies conducted in the northern hemisphere indicate that the links between estuaries and the adjacent marine environment is critical to ecological functioning within the CTZ. This study assessed the influence of selected estuaries. Each estuary is unique with respect to physical, chemical, and biological characteristics, but estuaries share many common features.

For example, rivers provide a continuous input of sediment into the estuary. Turbidity is a measure of the amount of suspended particles, which includes fine sediments, in the water.

IMPACT ASSESSMENT GUIDE Summary The environmental assessment process provides a consistent approach to the assessment of changes and evaluation of impacts. This process is used to determine the impact of developments and the procedures for Environmental Impact Assessment (EIA) are now well established and applied internationally.

Estuarine and Coastal Marine Waters: Bioassessment and Biocriteria Technical Guidance George R. Gibson, Jr., Project Leader () USEPA Office of Water Office of Science & Technology Pennsylvania Avenue, NW Washington, DC Principal Authors: Michael L.

Bowman Principal Scientist Tetra Tech, Inc. Red Run Boulevard, Suite Owings. Executive Summary The Technical Guidance Manual for Performing Waste Load Allocations, Book III: Estuaries is the third in a series of manuals providing technical information and policy guidance for the preparation of waste load al- locations (WLAs) that are as technically sound as cur- rent state of the art permits.

Physical oceanography of estuaries (and associated coastal waters) Hardcover – January 1, by Charles B Officer (Author) › Visit Amazon's Charles B Officer Page.

Find all the books, read about the author, and more. See search results for this author. Are you an author. Author: Charles B Officer. Estuaries are also often ideal locations for ports, harbours and shipyards as they provide the necessary shelter for ships as well as access further inland along major rivers.

Estuaries and coastal zones are however also amongst the most dynamic and complex ecosystems in the world. They are made up of a wide range of different habitats, which existFile Size: 3MB. from the juxtaposition of the framework, the more detailed examination of the major groups of estuarine and coastal physical ecosystem engineers, and the analysis of their management.

Making Sense of the Diversity: A Framework for Physical Ecosystem Engineering of Estuaries and Coasts Framework Seagrass meadows trap sediments. Advisers to the Nation on Science, Engineering, and Medicine.

The National Academy of Sciences is a private, nonprofit, self-perpetuating society of distinguished scholars engaged in scientific and engineering research, dedicated to the furtherance of science and technology and to their use for the general welfare.

Upon the authority of the charter granted to it by the. One of the most common reasons for identifying change within estuaries is as a basis for assessing the impacts on a wide range of interests. These may be physical, biological or anthropogenic. This chapter: Provides a brief introduction to the process of environmental impacts assessment and outlines a suitable procedure.

A new University of Central Florida study will examine how rising sea level could harm estuaries and coastal communities along the Florida Panhandle and Alabama and Mississippi coasts. Consisting of almost subject entries in an easy-to-use format, this volume covers the physical, chemical, and biological characteristics of estuaries.

In total more than authors from around the world have contributed to the encyclopedia on such diverse subjects as biotic communities, essential habitats, food webs, fisheries, hydrology. Consisting of almost subject entries in an easy-to-use format, this volume covers the physical, chemical, and biological characteristics of estuaries.

In total more than authors from around the world have contributed to the encyclopedia on such diverse subjects as biotic communities, essential habitats, food webs, fisheries, hydrology. Estuaries: Where Rivers Meet. the Sea. Origins and Types of Estuaries Physical Characteristics of Estuaries Estuaries as Ecosystems Human Impact on Estuarine Communities THEME.

Patterns. By studying the structure of estuaries, scientists have classified four main types of estuaries, as well as four main estuarine File Size: 4MB. Estuaries that are formed when folding and faulting create basins that fill with water are _____ estuaries.

(a) erosional dredging of the river to accommodate boat traffic (c) hydroelectric dams The biological response level that is impacted for the longest time period by pollutants in the marine environment is the _____.

Life in an Estuary: Estuaries support a wide variety of animals and plants. Estuaries are one of the most plentiful ecosystems in the world and has a great biodiversity.

To give an example of how the ecosystem flows, here's a sample food chain with al 5 trophic levels. People love water sports and visit estuaries to boat, fish, swim, and just enjoy their beauty. As a result, the economy of many coastal areas is based primarily on the natural beauty and bounty of their estuaries.

Estuaries often have ports serving shipping, transportation, and industry. Healthy estuaries support profitable, commercial fisheries. Estuary Presentation 1. The Estuary By Matthew Ullman S 2.

Global Distribution 3. Specific Biome Location and RequirementsS According to the definition of an estuary, this habitat must be at the tidal mouth where the river system and the oceanic system meet.

The impacts of dredging become a critical issue when sediments are the storage facility for industrial and agricultural chemicals.

Tiered sampling and various sampling methodologies are as stated previously in the stream section. Current status of research. Estuaries have recently obtained national recognition.

The Encyclopedia of Estuaries, part of Springer's Encyclopedia of Earth Sciences Series, provides a single, state-of-the-art, comprehensive reference volume on estuaries for research scientists, educators, students, and ting of almost subject entries in an easy-to-use format, this volume covers the physical, chemical, and biological characteristics of Pages:.

Florida’s estuaries. Here are some ideas. Tr ash —Paper, garbage, and other forms of trash w ash up on our shorelines at an alarming rate.

This debris has a disastrous effect upon marine life, and ev ery year thousands of animals are killed as a result. Y ou can do your part to p revFile Size: KB.Sediment Dynamics of Chinese Muddy Coasts and Estuaries: Physics, Biology and Their Interactions provides a forum for the latest research addressing the physics, sedimentary processes, biology, chemistry and ecological processes associated with these rapidly changing estuarine and coastal environments.

The book explores the challenges and opportunities for .The Importance of Estuaries. Some of the world's most productive and diverse ecosystems are located within estuaries and host a wide range of organisms.

In fact, many species of commercially important fish and shellfish spend part of their life cycle within estuaries before reaching maturity.