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  • Articles  (10)
  • Chemical analysis
  • Chemistry
  • Marine pollution
  • United States
  • Alexandria: National Institute of Oceanography and Fisheries  (5)
  • Woods Hole Oceanographic Institution  (5)
  • 2005-2009  (10)
  • 1
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    Geochemical and environmental studies of recent marine sediments and some hard corals of Wadi El-Gemal area of the Red Sea, Egypt (2006)
    Alexandria: National Institute of Oceanography and Fisheries
    Details
    Publication Date: 2021-05-19
    Description: This Journal is published by National Institute of Oceanography and Fishereies, Alexandria, Egypt
    Description: The distribution of (Fe, Mn, Zn, Cu, Pb, Ni, Co and Cd) concentrations were determined in surface marine sediments and coral reefs at Wadi El-Gemal in the Red Sea area. There were significant differences in concentrations of heavy metals in the marine sediments relative to the coral reefs. Some heavy metal concentrations in sediments and coral reefs in the study area are high compared to that in the impact areas of the Egyptian Red Sea coast. The results indicate that the high concentrations of heavy metals in marine sediments and coral reefs are particularly affected by the high contribution of terrigenous materials through the stream of Wadi El-Gemal. Generally, heavy metals concentration in the sediments decreased with increasing distance from the shoreline with the exception of Pb, which increased with increasing distance from the shoreline. On the other hand, Pb concentration in coral reefs is high compared to that in some sediment samples at Wadi El- Gemal area. The grain size, carbonate, organic matter, phosphorus and heavy metals distribution reflect marked changes in lithology, biological activities in the sea and land geology of the study area. Carbonate content mainly of biogenic origin varies from 5.7 –69.5% of the sediments. Organic matter contents of the sediments (1.7 to 6.5%) and phosphorus content (110 to 5097ppm) usually reflect significant terrigenous influences. On the other hand, heavy metals show an increasing tendency in the mud fraction of Wadi El-Gemal area. The present work reflects how much the marine sediments and coral reefs are influenced by natural impacts from this wadi. The collected data will be useful in management and suitable development of the area, beside being helpful as database in the future.
    Description: NIOF
    Description: Published
    Keywords: Hard corals ; Wadi El-Gemal ; Natural impacts ; Heavy metals ; Environment ; Marine ecology ; Environments ; Marine ecology ; Marine pollution ; Sediments ; Coral reefs
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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  • 2
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    Physico-chemical characteristics of abu za'baal ponds, Egypt (2006)
    Alexandria: National Institute of Oceanography and Fisheries
    Details
    Publication Date: 2021-05-19
    Description: NIOF, Alexandria, Egypt
    Description: The present study deals with the physical and chemical characteristics of the water of Abu Za'baal Ponds. Determination of physical parameters (air and water temperatures, transparency, electrical conductivity, salinity, total solids, total dissolved solids and total suspended solids) and chemical parameters (pH, DO, BOD, COD, HCO3 -, CO3 --, Cl- , SO4 --,Ca2+, Mg2+, Na+, K+, NO2-, NO3-, NH3, PO4--, TP and SiO2-) were carried out to identify the nature and quality of the water of Abu Za'baal Ponds. The present results reveal that the values of most physical and chemical parameters were higher than those of freshwater, lower than those of saline water and in the same range of the brackishwater. Thus, the water of Abu Za'baal Ponds can be classified as brackishwater.
    Description: National Institute of Oceanography and Fisheries- Alexandria, Egypt
    Description: Published
    Keywords: Abu Za'baal Ponds ; Chemical composition ; Coastal waters ; Environmental conditions ; Chemical analysis ; Chemical composition ; Coastal waters ; Environmental conditions ; Environmental effects
    Repository Name: AquaDocs
    Type: Journal Contribution , Non-Refereed , Article
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  • 3
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    Polycyclic aromatic hydrocarbons and aromatic plasticiser materials in the sea water of alexandria coastal area (2006)
    Alexandria: National Institute of Oceanography and Fisheries
    Details
    Publication Date: 2021-05-19
    Description: This journal is published by NIOF, Alexandria, Egypt
    Description: Polycyclic aromatic hydrocarbons (PAHs), the real contaminants of petroleum, were detected in the surface seawater of Alexandria coastal area in winter and spring seasons of 1995. Their order of predominance, particularly for the individual components were principally due to the processes of input, transport and fluxes. Variation of PAHs was not following seasonal changes but it was slightly affected by partial dissolution of the lowerboiling aromatic hydrocarbons. The most abundant component of aromatic hydrocarbons was pyrene (PAH),112ngI-1 followed by naphthalene(56ngI-1) and its alkylated derivatives (dicyclic), then phenanthrene(14ngI-1) and its methylated derivatives (tricyclic). The potential fish carcinogenic PAH, dibenz [a & c] anthracene was found in extremely trace levels. Most aromatic hydrocarbons present in seawater were arised from combustion of various petroleum and non-petroleum products, while few aromatics were found as a result of petroleum pollution. PAHs were also detected in rain water(25ngI-1). Plasticiser mate rials (phthalates) were determined everywhere at considerable levels in the coastal area of Alexandria; which is the first district in Egypt for producing and recycling polyethylene, plastics and nylons.
    Description: NIOF
    Description: Published
    Description: Polycyclic aromatic hydrocarbons, Sources, Seasonal changes, Natural variation, Plasticizer materials, Rain water
    Keywords: Marine environment ; Environment ; Chemical analysis ; Environments ; Marine environment ; Marine pollution ; Oil pollution
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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  • 4
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    Distribution and relationships of heavy metals in the giant clam (Tridacna maxima) and associated sediments from different sites in the Egyptian Red Sea Coast (2006)
    Alexandria: National Institute of Oceanography and Fisheries
    Details
    Publication Date: 2021-05-19
    Description: This journal is published by National Institute of Oceanography and Fisheries, Alexandria, Egypt
    Description: The giant clam (Tridacna maxima) and sediments have been collected from clean and contaminated coastal sites of the Egyptian Red Sea. Selected samples of the giant clam shells and the associated surface sediments were analyzed for Fe, Mn, Zn, Cu, Pb, Ni and Cd. Significant spatial differences in metal concentrations in Tridacna maxima and sediments were identified. Copper and lead are greatly enriched in the giant clam shells, which is related to their physiological function. Cd content is higher in Tridacna maxima than in sediments, because of the easy substitution between Cd and Ca. The levels of most metals in the giant clam shells and sediments were higher in the anthropogenic sites than in the uncontaminated sites. Generally, metal variations reflect natural conditions and human activity. Moreover, there are no clear relationships between concentrations of heavy metals in the giant clam shells and those in sediments.
    Description: NIOF, Alexandria, Egypt
    Description: Published
    Keywords: Bioaccumulation ; Heavy metals ; Giant clam ; Tridacna ; Red Sea ; Absorption ; Accumulation ; Chemical analysis ; Clam culture
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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  • 5
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    Ecological and fisheries development of Lake Manzalah (Egypt): hydrography and chemistry of Lake Manzalah (2006)
    Alexandria: National Institute of Oceanography and Fisheries
    Details
    Publication Date: 2021-05-19
    Description: This journal is published by the NIOF, Egypt
    Description: Lake Manzalah; the largest delta Lake in Egypt represents a dynamic system that has been undergoing continuous and pronounced changes since long times. In the last year’s this Lake faced drastic problems that retarded its environmental and fisheries development; the most serious one is the discharge of waste water. It is attempted in the present study to investigate the chemical characters of Lake Manzalah water during 2001-2002. Water temperature ranged from an average of 12.35oC in January and 29.14oC in July. Dissolved Oxygen, pH and total dissolved solids were found in ranges optimum for the living of marine and freshwater fish species. The average concentrations of nutrients lied in the following ranges: 1.24 to 4.89 μmol PO4 -3 l-1 , 5.08 to 28.73 μmol SiO4 -2 l-1 and 1.81 to 17.7 μ_mol NO3-1 l-1 The concentrations of phosphorus and nitrogen compounds were found to be relatively higher at the southern regions of the Lake near to the outlets of the drains.
    Description: NIOF
    Description: Published
    Keywords: Hydrography ; Water ; Chemistry ; Chemical composition ; Water content ; Environment ; Chemical composition ; Environments ; Water content ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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  • 6
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    Estimated annual economic impacts from harmful algal blooms (HABs) in the United States (2005)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-25
    Description: Blooms of toxic or harmful microalgae, commonly called "red tides," represent a significant and expanding threat to human health and fisheries resources throughout the United States and the world. Ecological, aesthetic, and public health impacts include: mass mortalities of wild and farmed fish and shellfish, human intoxication and death from the consumption of contaminated shellfish or fish, alterations of marine food webs through adverse effects on larvae and other life history stages of commercial fish species, the noxious smell and appearance of algae accumulated in nearshore waters or deposited on beaches, and mass mortalities of marine mammals, seabirds, and other animals. In this report, we provide an estimate of the economic impacts of HABs in the United States from events where such impacts were measurable with a fair degree of confidence during the interval 1987-92. The total economic impact averaged $49 million per year, with public health impacts representing the largest component (45 percent). Commercial fisheries impacts were the next largest (37 percent of the total), while recreation/tourism accounted for 13 percent, and monitoring/management impacts 4 percent. These estimates are highly conservative, as many economic costs or impacts from HABs could not be estimated.
    Description: Funding was provided by the National Oceanic and Atmospheric Administration under Grants No. NA46RG0470 and NA90AA-D-SG480, the National Science Foundation under Grant No. OCE-9321244, and the Johnson Endowment of the Marine Policy Center.
    Keywords: Harmful algal blooms ; HABs ; Red tides ; Economic impacts ; Brown tides ; United States
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 7
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    Toward an effective protocol on land-based marine pollution in the wider Caribbean Region (2006)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-25
    Description: This study was undertaken to advance the basis for discussions among Contracting Parties to the Cartagena Convention concerning a protocol on land-based marine pollution (LBMP) in the Wider Caribbean Region (WCR). The study has four principal objectives: (1) a review and summary of LBMP problems to determine common problems and priority areas; (2) a survey of broadly defined environmental infrastructure to help identify national commitments and national capacities to prevent, reduce, or control LBMP; (3) a survey and analysis of subregional differences in commitment or interest in regional control of LBMP; and (4) a comparison of program approaches from other regions, providing lessons from which an effective program for the Caribbean might be designed. The study argues that the environmental, economic, and institutional diversity of the region as a whole suggests (1) an incremental approach to international resolution of LBMP problems, one that builds upon successful arangements among states that have appropriate incentives for solving real transboundary pollution problems; and (2) a subregional approach to the control of localized but widely occurring pollution problems, in which the "umbrella" function of a regional protocol would concentrate on the need to ensure uniform access to all clearinghouse products and on the internal allocation of financial and technical assistance to individual states and subregions.
    Description: Funding provided by the United States Environmental Protection Agency, Office of International Activities under Co-operative Agreement No. CX82IS40-01-0.
    Keywords: Marine pollution ; International protocols ; UNP Regional Seas Programme
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 8
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    Developing a national marine electronics agenda : proceedings of the Marine Instrumentation Panel meeting, September 12-14, 1989 (2006)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Thirteen short papers address aspects of competitiveness in the marine electronics instrumentation industry. Topics include activity and status of government initiatives in Japan and Europe to promote this industry; and the possible role of federal-state collaboration in the U.S. Papers address technology transfer between research institutions and the commercial sector; the role of "strategic alliances" in this process; and the "dual-use" concept in effective technology development and commercialization. Other papers address electronic technology applications in speific marine areas, such as the use and implications of the COMSAT mobile satellite communication infrastructure; electronic charts and safety of tanker operations; and instrumentation applications in aquaculture and environmental monitoring.
    Description: Funding was provided by the National Oceanic and Atmospheric Administration through a grant to the Massachusetts Centers of Excellence Corporation, grant No. NA87-AA-D-M00037.
    Keywords: Marine electronics ; Marine instruments ; Competitiveness ; Commercialization ; Marine economics ; State economic initiatives ; Technology transfer ; R&D ; Japan ; Europe ; United States ; Massachusetts ; Hawaii ; Aquaculture ; Tanker safety
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 9
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    Report to the Towns of Brookhaven and Islip, N.Y. on the hydrography of Great South Bay and Moriches Bay (2008)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference No. 52-26, series later renamed WHOI-.
    Description: During the summer of 1950, The Woods Hole Oceanographic Institution conducted a study of the waters of Great South Bay for the Town of Islip, New York, with a view to seeking the cause of the decline of the oyster industry, which has deteriorated steadily during the past twenty years. The report of these studies was submitted in January 1951. The survey revealed two conditions which in combination appeared to be unfavorable to the oyster industry. One unfavorable condition was the local change in circulation occasioned by the opening of Moriches Inlet in 1931, which had increased the salinity of Bellport Bay, creating a condition which might well be detrimental to the production of seed oysters. Aside from this, it was concluded that little change had taken place in the salinity and tidal exchange of the central and western part of the bay during the past twenty years. The second unfavorable condition was the pollution of Great South Bay by wastes from the duck farms located along the Carmans River and the tributaries of Moriches Bay. Chemical studies indicated that the bay water is unusually rich in the products of decomposing organic matter. These materials appeared to arise from the mouth of the Carmans River and the tributaries of Moriches Bay, from which they are carried westward across Great South Bay. They provide nutriment for the growth of an unusually dense population of microscopic plants. Evidence existed that oysters do not feed properly on water containing such large concentrations of plant cells, and available statistics showed a clear correlation over a period of years between the condition of bay oysters and the numbers of plant cells in the water. Finally, the decline in oyster production has been closely paralleled by the growth of the duck industry, which increased fourfold during the period. In the report on the survey of 1950, it was pointed out that a number of questions had been revealed which were not anticipated when the field work was in progress and that these questions merited additional study. One of these related to the behavior of uric acid, the peculiar form in which birds secrete nitrogenous wastes, which promised to provide unambiguous evidence on whether the duck farms are the source of pollution. Another was the more detailed study of the circulation of Moriches Bay and its connection with Great South Bay through Narrow Bay, since this appeared to be the principal avenue of the pollution of Great South Bay. Finally, more detailed information was desired concerning the actual quantities of pollutants arising from the duck farms and of the alterations of its components by biological and other action upon introduction into the bay water. Before these additional studies could be undertaken, the problem acquired a new aspect be cause of the spontaneous closure of Moriches Inlet which occurred on May 15, 1951. While this terminated any possibility of increasing knowledge of the circulation between the bays as it previously existed, it afforded an opportunity to observe the effect of the opening on the condition of the bay waters. This information was of prime importance in view of the proposal to reopen and stabilize Moriches Inlet. Field parties visited the region on three occasions during the sumer. On July 12-14, 1951, a survey was made of the entire system of bays lying between the western extremity of Great South Bay and the Shintecock Canal. Between July 27 and August 5, studies were made of the chemical conditions in Moriches Bay and its approaches, and a detailed examination was carried out on the immediate conditions associated with the duck farms along the Terrell River. On September 24-29, an attempt was made to measure the exchange of water and associated pollutants between Moriches Bay and Great South Bay, and through the Quantuck Canal. On this occasion continuous observations were made at Smith Point and Beach Lane Bridge for a period of fifty hours, including four complete tidal cycles.
    Description: The work conducted in 1951 was supported jointly by the appropriations made by the Towns of Brookhaven and Islip at the initiative of the Long Island Fishermen's Association.
    Keywords: Oceanography ; Marine pollution
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 10
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    Data file : continental margin program : Atlantic coast of the United States: vol. 1: sample collection data; supplement 1 (2008)
    Woods Hole Oceanographic Institution
    Details
    Publication Date: 2022-05-26
    Description: Originally issued as Reference No. 67-21
    Description: This supplement to Volume I of the Data File, Continental Margin, Atlantic Coast of the United States (Woods Hole Oceanographic Institution Ref. No. 66-8) consists of three parts: 1. Errata for Volume I, 2. New station and sample data added to the file, and 3. Miscellaneous tables of information pertaining to the file. The user is referred to Volume I for explanation of the headings and abbreviations used and for a discussion of the structure of the file.
    Description: Submitted to the U.S. Geological Survey under Contract No. 14-08-0001-8358.
    Keywords: Continental margins ; Oceanography ; United States
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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