- Email: [email protected]
Geochemistry of C25 and C30 biogenic alkenes in sediments of the Narragansett Bay estuary
916
C ('hemicat Oceanography
83:6690 Requejo, A.G. and J.G. Quinn, 1983. Geochemistry of Czs and Ca0 biogenic alkenes in sediments of the Narragansett Bay estuary. Geochim. cosmoehim. Acta, 47(6):1075-1090. The suite of alkenes detected differs both quantitatively and qualitatively from those previously reported in other estuarine and coastal regions. A comparison of alkene concentrations with 6~3C of the bulk sedimentary organic matter has shown that the geographic variations of some alkenes reflect the distribution of marine organic matter, suggesting a marine source. The distributions of other alkenes are not similarly correlated; concentrations of the C~ diene are relatively constant and exhibit no dependence on the origin of organic matter in these sediments, implying in-situ production throughout the estuary. Battelle New England Mar. Res. Lab., 397 Washington St., Duxbury, Mass. 02332, USA. 83:6691 Uematsu, Mitsuo and Shizuo Tsunogai, 1983. Recycling of manganese in the coastal sea, Funka Bay, Japan. Mar. Chem., 13(1):1-14, Concentrations of Mn, Fe and A1 were determined for both filtered and settled particulates at I, 40, and 80 m depths over a 1~/) year period. Mn seasonal fluxes across the sediment-water interface, rate of accumulation in sediments, and bottom water residence time were estimated. Most Mn apparently is actively recycled and flushed to the open sea rather than being permanently incorporated into the sediments. Grad. Sch. of Oceanogr., Univ. of Rhode Island, Kingston, R.I. 02881, USA. (mjj) 83:6692 Volkman, J.K., Robert Alexander, R.I. Kagi and Jtirgen RullkOtter, 1983. GC-MS characterisation of C27 and C2s triterpanes in [North Sea] sediments and petroleum. Geochim. cosmochim. Acta, 47(6): 1033-1040. Alexander: Sch. of Appl. Chem, Western Australia Inst. of Tech., Hayman Rd., South Bentley, WA 6102, Australia. 83:6693 Wolaver, T.G. and Joseph Zieman, 1983. Effect of water column, sediment and time over the tidal cycle on the chemical composition of tidal water in a mesohaline marsh. Mar. Ecol.-Prog. Ser., 12(2): 123-130. Frequent sampling during a tidal cycle coupled with experimental work showed ammonium and orthophosphate subject to tight internal cycling between sediment substrate and water column. Nitrate and nitrite processes depended on water volume to
OLR i1983i ~Oii2~
sediment surface ratio, DON and DOP processes on marsh location and season, and particulate N and P processes on flood vs. ebb tide. Belle W. Baruch lnst. for Mar. Biol. and Coastal Res., Univ. ot So, Carolina, P.O. Box 1630, Georgetown, S.C. 29440, USA. (mwf)
C210. Pollution
(see also B 3 5 ~ A t m o s p h e r i c pollution, Ci 10-Radioactivity, radiois~topes, E 3 0 0 - E f f e c t s of p o l l u t i o n , i ' 2 5 0 W a s t e disposal)
83:6694 Corredor, J.E., Julio Morell and Astrid M6ndez, 1983. Pelagic petroleum pollution off the southwest coast of Puerto Rico. Mar. Pollut Bull.. 14(51:166-168. Estimates of floating tar ball abundance, rnomtored weekly since November 1980, agree well with previously published data for the area. Dissolved dispersed hydrocarbon concentrations are close t~, but below those in the Mediterranean Sea, and considerably lower than those in more polluted areas. Tar ball abundance is related closely to the intensity of southerly winds. Hydrocarbon ct)ncentrations are highest during the fall and coincidenl with the highest surface water temperatures. Uni~. of Puerto Rico, Dept. of Mar. Sci., Mayaguez, Puerto Rico. 83:6695 Georges, C. and B.L. Oostdam, 1983. The characteristics and dynamics of tar pollution on the beaches of Trinidad and Tobago. Mar, Polluz. Bull., 14(5):170-178. Inst. of mar. Affam,,. P.O, Box 3160, Carenage, Trinidad, West Indies 83:6696 Gundlach, E.R., P.D. Boehm, Michel Marchand. R.M. Atlas, D.M. Ward and D.A. Wolfe, 1983. The fate of Amoco Cadiz oil. Science. 221(46(161: 122-129. In March of 1978, the wreck of the Amoco ~adtz caused the largest tanker oil spill in history (223,000 tons) to date. Extensive data on the physicalchemical fate of the spilled oil during the next 3 yr are synthesized in this article, and a brief overview of the literature on the biological impacts is presented; 3 symposia dedicated to this spill are noted. It is concluded that 13.5% of the spilled oil was rapidly mixed into the water column, 8% was deposited m subtidal sediments, 28% washed into the intertidal zone, 30% evaporated and 4.5~ was microbially
C ('hemicat Oceanography
83:6690 Requejo, A.G. and J.G. Quinn, 1983. Geochemistry of Czs and Ca0 biogenic alkenes in sediments of the Narragansett Bay estuary. Geochim. cosmoehim. Acta, 47(6):1075-1090. The suite of alkenes detected differs both quantitatively and qualitatively from those previously reported in other estuarine and coastal regions. A comparison of alkene concentrations with 6~3C of the bulk sedimentary organic matter has shown that the geographic variations of some alkenes reflect the distribution of marine organic matter, suggesting a marine source. The distributions of other alkenes are not similarly correlated; concentrations of the C~ diene are relatively constant and exhibit no dependence on the origin of organic matter in these sediments, implying in-situ production throughout the estuary. Battelle New England Mar. Res. Lab., 397 Washington St., Duxbury, Mass. 02332, USA. 83:6691 Uematsu, Mitsuo and Shizuo Tsunogai, 1983. Recycling of manganese in the coastal sea, Funka Bay, Japan. Mar. Chem., 13(1):1-14, Concentrations of Mn, Fe and A1 were determined for both filtered and settled particulates at I, 40, and 80 m depths over a 1~/) year period. Mn seasonal fluxes across the sediment-water interface, rate of accumulation in sediments, and bottom water residence time were estimated. Most Mn apparently is actively recycled and flushed to the open sea rather than being permanently incorporated into the sediments. Grad. Sch. of Oceanogr., Univ. of Rhode Island, Kingston, R.I. 02881, USA. (mjj) 83:6692 Volkman, J.K., Robert Alexander, R.I. Kagi and Jtirgen RullkOtter, 1983. GC-MS characterisation of C27 and C2s triterpanes in [North Sea] sediments and petroleum. Geochim. cosmochim. Acta, 47(6): 1033-1040. Alexander: Sch. of Appl. Chem, Western Australia Inst. of Tech., Hayman Rd., South Bentley, WA 6102, Australia. 83:6693 Wolaver, T.G. and Joseph Zieman, 1983. Effect of water column, sediment and time over the tidal cycle on the chemical composition of tidal water in a mesohaline marsh. Mar. Ecol.-Prog. Ser., 12(2): 123-130. Frequent sampling during a tidal cycle coupled with experimental work showed ammonium and orthophosphate subject to tight internal cycling between sediment substrate and water column. Nitrate and nitrite processes depended on water volume to
OLR i1983i ~Oii2~
sediment surface ratio, DON and DOP processes on marsh location and season, and particulate N and P processes on flood vs. ebb tide. Belle W. Baruch lnst. for Mar. Biol. and Coastal Res., Univ. ot So, Carolina, P.O. Box 1630, Georgetown, S.C. 29440, USA. (mwf)
C210. Pollution
(see also B 3 5 ~ A t m o s p h e r i c pollution, Ci 10-Radioactivity, radiois~topes, E 3 0 0 - E f f e c t s of p o l l u t i o n , i ' 2 5 0 W a s t e disposal)
83:6694 Corredor, J.E., Julio Morell and Astrid M6ndez, 1983. Pelagic petroleum pollution off the southwest coast of Puerto Rico. Mar. Pollut Bull.. 14(51:166-168. Estimates of floating tar ball abundance, rnomtored weekly since November 1980, agree well with previously published data for the area. Dissolved dispersed hydrocarbon concentrations are close t~, but below those in the Mediterranean Sea, and considerably lower than those in more polluted areas. Tar ball abundance is related closely to the intensity of southerly winds. Hydrocarbon ct)ncentrations are highest during the fall and coincidenl with the highest surface water temperatures. Uni~. of Puerto Rico, Dept. of Mar. Sci., Mayaguez, Puerto Rico. 83:6695 Georges, C. and B.L. Oostdam, 1983. The characteristics and dynamics of tar pollution on the beaches of Trinidad and Tobago. Mar, Polluz. Bull., 14(5):170-178. Inst. of mar. Affam,,. P.O, Box 3160, Carenage, Trinidad, West Indies 83:6696 Gundlach, E.R., P.D. Boehm, Michel Marchand. R.M. Atlas, D.M. Ward and D.A. Wolfe, 1983. The fate of Amoco Cadiz oil. Science. 221(46(161: 122-129. In March of 1978, the wreck of the Amoco ~adtz caused the largest tanker oil spill in history (223,000 tons) to date. Extensive data on the physicalchemical fate of the spilled oil during the next 3 yr are synthesized in this article, and a brief overview of the literature on the biological impacts is presented; 3 symposia dedicated to this spill are noted. It is concluded that 13.5% of the spilled oil was rapidly mixed into the water column, 8% was deposited m subtidal sediments, 28% washed into the intertidal zone, 30% evaporated and 4.5~ was microbially