Download or read book Animal sediment Relationships of the Duplin River Georgia written by James D. Howard and published by . This book was released on 1972 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Hydrographic Properties of the Duplin River Georgia written by George H. Remmer and published by . This book was released on 1972 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Temporal and Spatial Variability of Transport and Mixing Mechanisms Using Heat and Salt in the Duplin River Georgia written by James Paul McKay and published by . This book was released on 2008 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the Duplin River, a shallow, sinuous, tidal creek which connects the salt marshes of Sapelo Island, on the central Georgia coast, with the waters of Doboy Sound and the coastal Atlantic Ocean, was conducted to quantify the physical processes which regulate the flux and zonation of heat and salt throughout the creek system. Three water masses are identified with differing temperature and salinity regimes. Hourly scale heat budgets are constructed for the upper (warmer) and lower (cooler) areas of the Duplin River showing the diminishing importance of tidal advection away from the mouth of the creek along with the concomitant increase in the importance of both direct atmospheric fluxes and of interactions with the marsh and side creeks. The heat budget is re-examined on daily averaged scales revealing the decreased importance of advective fluxes relative to direct atmospheric fluxes on this scale but the constant importance of marsh/creek interactions regardless of time scale or season. Tidally averaged along channel salt fluxes are calculated and a contrast is drawn between the lower and the upper Duplin. The main channel of the lower Duplin is bordered by creekless marsh, marsh hammocks and hard upland and salt fluxes are largely constrained to the main channel with salinity in the lower Duplin closely tracking observed salt fluxes. The upper Duplin is isolated from the lower Duplin by a sinuous channel and is subject to significant local fresh groundwater input. The upper Duplin acts as a reversing estuary on a fortnightly time scale. Salt fluxes are not constrained to the main channel but show a significant influence of the marsh. Vertical mixing is shown to be modulated on both M4 and fortnightly frequencies with turbulent stresses being generated near the bed and propagating into the water column on periods of max flood and ebb and being significantly greater on spring tide than on neap. Horizontal mixing is driven by tidal dispersion, which is modulated by the fortnightly spring/neap cycle. Net export of salt from the lower Duplin is shown to be due to residual advection modified by upstream tidal pumping which, in the absence of external forcing, exhibits a pulsating character with net export taking place for a short period on spring tide followed by a longer period of net import of salt. A box model is developed to explore subtidal inputs of groundwater and salt into the three water masses of the Duplin River. The results of this model are examined to draw insights into the magnitude and spatial distribution of these processes and their effect on the Duplin River water masses.

Download or read book Duplin River Estuarine Sanctuary written by and published by . This book was released on 1975 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Volume Transport Salinity Distribution and Net Circulation in the Duplin Estuary Georgia written by Björn Kjerfve and published by . This book was released on 1973 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Ecology of a Salt Marsh written by L. R. Pomeroy and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecologists have two long-standing ways to study large ecosystems such as lakes, forests, and salt-marsh estuaries. In the first, which G. E. Hutchinson has called the holological approach, the whole ecosystem is first studied as a "black box," and its components are investigated as needed. In the second, which Hutchinson has called the merological approach, the parts of the system are studied first, and an attempt is then made to build up the whole from them. For long-term studies, the holological approach has special advantages, since the general patterns and tentative hypotheses that are first worked out help direct attention to the components of the system which need to be studied in greater detail. In this approach, teams of investigators focus on major func tions and hypotheses and thereby coordinate their independent study efforts. Thus, although there have been waves, as it were, of investigators and graduate students working on different aspects of the Georgia salt-marsh estuaries (personnel at the Marine Institute on Sapelo Island changes every few years), the emphasis on the holo logical approach has resulted in a highly differentiated and well-coordinated long-term study. Very briefly, the history of the salt-marsh studies can be outlined as follows. First, the general patterns of food chains and other energy flows in the marshes and creeks were worked out, and the nature of imports and exports to and from the system and its subsystems were delimited.

Download or read book Taphonomy and Distribution of Shelled Molluscs Within the Duplin River and Doboy Sound Sapelo Island Georgia written by Stephen William Henderson and published by . This book was released on 1984 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proposed Estuarine Sanctuary Grant Award for Duplin River McIntosh County Georgia written by National Ocean Survey. Office of Coastal Zone Management and published by . This book was released on 1975* with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Atlantic Coast of the United States written by United States. Bureau of Light-Houses and published by . This book was released on 1933 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Light List written by and published by . This book was released on 1937 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Underground waters of the coastal plain of Georgia written by Lloyd William Stephenson and published by . This book was released on 1915 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Depths that Can be Carried Into the Harbors and Anchorages on the Atlantic and Gulf Coast of the United States written by United States. Bureau of Naval Personnel and published by . This book was released on 1893 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oyster Investigations in Georgia written by Paul Simon Galtsoff and published by . This book was released on 1930 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Complete List of Lights and Other Marine Aids Atlantic Coast of the United States written by and published by . This book was released on 1954 with total page 942 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Ecology of Seashores written by George A. Knox and published by CRC Press. This book was released on 2000-12-21 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Ecology of Seashores explores the complex shore environment. It covers the ways in which representative species have adapted to life in a constantly changing environment in terms of their interactions, the control of community structure, and how energy and materials are cycled in different ecosystems. Written by an eminent marine biologist,

Download or read book Light List Including Fog Signals Atlantic and Gulf Coasts of the United States written by United States. Bureau of Light-Houses and published by . This book was released on 1931 with total page 2084 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coastal Offshore Ecosystem Interactions written by Bengt-Owe Jansson and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: stable isotope ratios act as naturally-occurring tracers for organic matter, making possible, under certain conditions, the quantification of coastal-offshore exchanges. In general, organic matter has isotope ratios characteristic of its origin (e. g. plants with different modes of photosynthesis and different growth conditions, anthropogenic compounds). These ratios are maintained as the organic matter moves through the biosphere and geosphere. A mixture of organic matter from two sources has isotope ratios intermediate between those of the two sources, in proportion to the fraction of material from each source. Isotope ratios are one of the few methods which can trace organic matter as it moves through natural ecosystems. Ratios can be measured on both the total organic matter and on particular chemical fractions or compounds. When used on organisms, isotope ratios provide information of organic matter actually assimilated into body tissues, not just material ingested. As with all tools, this method has certain limitations which must be borne in mind when interpreting its results. Firstly, specific environmental conditions must be met. This generally means an ecosystem with a limited and known number of sources of organic matter having different isotope ratios. Two sources with different isotope ratios are ideal; additional sources with other isotope ratios complicate interpretation. Secondly, the difference in isotope ratios of the two sources should be large compared with analytical variability. Thirdly, the ratios within each source should vary as little as possible.