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Air pollution
1998
Wark, Kenneth | Warner, Cecil Francis | Davis, Wayne T.
Agricultural pesticide residues in oysters and water from two Chesapeake Bay tributaries
1998
Lehotay, S.J. | Harman-Fetcho, J.A. | McConnell, L.L.
Little is known of the impact of agricultural activity on oysters in Chesapeake Bay tributaries. As a preliminary assessment of pesticide residues in oyster tissues, this study monitored more than 60 pesticides in oysters and overlying water in two tributaries of the Chesapeake Bay. Paired water and oyster samples were collected throughout 1997 from the Patuxent and Choptank Rivers which discharge into opposite shores of the Chesapeake Bay in Maryland. In water, herbicides such as atrazine, simazine, cyanazine, and metolachlor were present throughout the year with individual water concentrations peaking as high as 430 ng/1 in the late spring and summer and subsiding in the fall. These herbicides were not detected in the oysters even when concentrations were highest in the water. Another herbicide, trifluralin, was detected throughout the year at concentrations of less than 0.6 ng/1 and 0.4 ng/g (wet weight) in water and oyster samples, respectively. Several insecticides, such as endosulfans I and II, endosulfan sulfate, chlorpyrifos, α- and γ-HCH, p,p'-DDE, o,p'-DDT, trans-nonachlor, and trans-chlordane were also measured in both oysters and water at low concentrations.
Show more [+] Less [-]Fluoride loading of a lepidopteran larva (Pieris brassicae) fed on treated diets
1998
Port, G.R. | Davies, M.T. | Davison, A.W. (Department of Agricultural and Environmental Science, The University, Newcastle upon Tyne NE1 7RU (United Kingdom))
Nitrate leaching in dairy farming: economic effects of environmental restrictions
1998
Groeneveld, R. | Bouwman, A.F. | Kruitwagen, S. | Ierland, E.C. van (Department of Economics and Management, Environmental Economics Group, Wageningen Agricultural University, P.O. Box 8130, 6700 EW, Wageningen (Netherlands))
The nitrogen reduction programme in the Federal Republic of Germany
1998
Eichler, F. | Schulz, D. (Federal Environmental Agency, Bismarckplatz 1, D-14 193 Berlin (Germany))
Further studies of the air-pasture transfer of polychlorinated biphenyls
1998
Thomas, G.O. | Smith, K.E.C. | Sweetman, A.J. | Jones, K.C. (Environmental Science Department, Institute of Environmental and Natural Sciences, Lancaster University, Lancaster LA1 4YQ (United Kingdom))
Plant uptake of radionuclides in lysimeter experiments
1998
Gerzabek, M.H. | Strebl, F. | Temmel, B. (Austrian Research Centre Seibersdorf, Division of Life Sciences, A-2444 Seibersdorf (Austria))
Germination and seedling development of switchgrass and smooth bromegrass exposed to 2,4,6-trinitrotoluene
1998
Peterson, M.M. | Horst, G.L. | Shea, P.J. | Comfort, S.D. (Horticulture Department, University of Nebraska-Lincoln, Lincoln, NE 68583-0724 (USA))
Fate of airborne polychlorinated dibenzo-p-dioxins and dibenzofurans in an agricultural ecosystem
1998
Welsch-Pausch, K. | McLachlan, M.S. (Ecological Chemistry and Geochemistry, University of Bayreuth, 95440 Bayreuth (Germany))
Wet deposition of ammonium and atmospheric distribution of ammonia and particulate ammonium in Japan
1998
Murano, K. | Mukai, H. | Hatakeyama, S. | Oishi, O. | Utsunomiya, A. | Shimohara, T. (National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-0053 (Japan))
