Marine coastal systems

Kwint RLJ, Kramer KJM (1996) The annual cycle of the production and fate of DMS and DMSP in a marine coastal system. Mar Ecol Prog Ser 134 217-224 Laroche D, Vezina AF, Levasseur M, Gosselin M, Stefels J, Keller MD, Matrai PA, Kwint RLJ (1999) DMSP synthesis and exudation in phytoplankton a modeling approach. Mar Ecol Prog Ser 180 37 19 Lee PA, de Mora SJ (1999a) A review of dimethylsulfoxide in aquatic environments. Atmosphere-Ocean 37 439-456... 

Kwint RLJ, Kramer KJM (1996) Annual cycle of the production and fate of DMS and DMSP in a marine coastal system. Mar Ecol Prog Ser 134 217-224... 

Chemical sensing in the marine environment (U.S. Navy) Coastal Systems Station, Panama City, Florida... 

Deltares, Marine and Coastal Systems Wageningen UR, Alterra... 

Arctic marine/coastal/riverine systems disturbance and recovery of terrestrial ecosystems. 

Eutrophication Processes in Coastal Systems Origin and Succession of Plankton Blooms and Effects on Secondary Production in Gulf Coast Estuaries, Robert J. Livingston Handbook of Marine Mineral Deposits, David S. Cronan Handbook for Restoring Tidal Wetlands, Joy B. Zedler Intertidal Deposits River Mouths, Tidal Flats, and Coastal Lagoons, Doeke Eisma... 

In the Pleistocene-Holocene, the Black Sea underwent a series of intensive transgressions and regularities. At this stage, the topographic pattern inherited by recent marine-coastal features was formed, accompanied by the appearance of the shelf, marine terraces, and systems of underwater canyons on the continental slope. 

Phosphorus was traditionally considered not to be limiting on ecologically relevant timescales in the marine environment (Ryther and Dunstan, 1971) because N usually became limiting before P was depleted. Flowever, evidence is accumulating for P hmitation in several coastal systems and estuaries (Thingstad et al., 1998 Yin et al., 2000), the oligotrophic Adantic Ocean (Cotner et al., 1997 Sanudo-Wdhelmy et al., 2001 Wu et al., 2000), the North Pacific central gyre (Bjorkman et al., 2000), and in the eastern basin of the Mediterranean Sea (Krom et al., 1991, 1993). 

Characterization of the ecosystem of concern is often a most difficult process. In many cases involving restoration of damaged ecosystems, there may not be a functional ecosystem, and a surrogate must be used to understand the interactions and processes of the system. Often the delineation of the ecosystem is difficult. If the protection of a marine hatchery is considered the assessment endpoint, large areas of the coastal shelf, tidewater, and marine marsh systems have to be included in the process. Even many predominately terrestrial systems have aquatic components that play a major role in nutrient and toxicant input. Ecosystems are also not stagnant systems but under succession, and they respond to the heterogeneity of climatic inputs in ways that are difficult to predict. 

Determining the relative contributions of marine and terrestrial plant organic carbon to the pools of organic matter In coastal systems Is often difficult. In Georgia salt marsh estuaries, the major sources of organic matter are In situ phytoplankton produc-... 

A.A. Keller, P. Hargraves, H. Jeon, G. Klein-MacPhee, E. Klos, C. Oviatt, J. Zhang (1997). Effects of ultraviolet-B enhancement on marine trophic levels in a stratified coastal system. Mar. Biol, 130,277-287. 

In this paper, the capabilities for slick detection at low grazing angles are examined with the use of a standard marine radar system chosen to represent the typical performance of this low cost technology. The resolution and data quality achieved with this kind of instrument are briefly reviewed and compared with those of traditional satellite and airborne radar systems. Two examples of the successful detection in the coastal zone of controlled surfactant slicks with a marine radar system are presented to illustrate the potential for operational and research applications. Finally, the information contained in long-term radar monitoring of a specific area is explored. 

These results confirm that marine radar systems can provide useful and reliable NRCS measurements in complex areas such as the coastal zone. These cost effective instruments provide a robust and reliable tool for long-term monitoring of sensitive coastal areas. The long-term monitoring facility suggests that these data may also be useful to interpret larger scale snapshots obtained from satellite or airborne radars. 

G.R. Choppin (Florida State University) is investigating the synergistic reaction of actinide-TTA complexes with brown ether adducts in benzene solutions and interaction of plutonium and other transuranic elements with the components of marine sediments under different conditions. The interaction of plutonium-238 dioxide heat source with the marine environment is also under investigation by H.V. Weiss (Naval Coastal Systems Center). 

Figure 9.5. Synchronous fluorescence spectra with an offset of 65 nm of a freshwater sample (solid line) and marine water sample (dotted line). Locations of the a (humic-like), jS (marine humic-like), and 7 (tyrosine-like) peaks are identifled. The marine humic-like peak has been associated with recently created humic material due to algal activity and is commonly seen with a corresponding protein peak. The and a peaks are used to calculate the freshness index, which is considered an indicator of the degree of recently produced humic material in coastal systems. (From Parlanti et al. [2000], with minor adaptations.)...

Enormous amounts of waste dumped into water systems are degrading water quality and causing increased human health problems. In assessing this pollution, there are two distinct problem areas. The first, and worst, is in marine estuaries and associated coastal waters. As fewer and fewer alternatives remain for land disposal, wastes are finding their way more often into water. The second area consists of the oceans themselves, tiltliough it is believed tliat currently not much of a problem exists, because relatively little waste is dumped... 

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