Natural and Post-Urbanization Signatures of Hypoxia in Two Basins of Puget Sound: Historical Reconstruction of Redox Sensitive Metals and Organic Matter Inputs

Aquatic Geochemistry

Volumn 17, Issue 4, 2011, Pages 645-670

  Brandenberger, Jill M ^a   Louchouarn, Patrick ^b   Crecelius, Eric A ^a  

^a PACIFIC NORTHWEST NATIONAL LABORATORY   (United States)

^b TEXAS A AND M UNIVERSITY   (United States)

Author keywords

Climatic cycles; Hypoxia; Organic matter; Paleoecological indicators; Redox sensitive metals; Sediment cores

Indexed keywords

BIOINDICATOR; BIOMARKER; CLIMATE OSCILLATION; HYPOXIA; ORGANIC MATTER; PALEOCLIMATE; PALEOECOLOGY; PALYNOLOGY; RECONSTRUCTION; REDOX POTENTIAL; SEDIMENT CORE; SEDIMENTARY BASIN; TWENTIETH CENTURY; URBANIZATION; WATERSHED;

HOOD CANAL; PUGET SOUND; UNITED STATES; WASHINGTON [UNITED STATES];

ALNUS; CONIFEROPHYTA;

EID: 80052269496     PISSN: 13806165     EISSN: 15731421     Source Type: Journal    
DOI: 10.1007/s10498-011-9129-0     Document Type: Article

References (126)

1. Antoine D, Andre JM, Morel A (1996) Oceanic primary production. 2. Estimation of global scale from satellite (coastal zone colour scanner) chlorophyll. Global Biogeochem Cycles 10: 57-69.
2. Barnes C, Collias E (1958) Some considerations of oxygen utilization rates in Puget Sound. J Mar Res 17: 68-80.
3. Benner R, Louchouarn P, Amon R (2005) Terrigenous dissolved organic matter in the Arctic Ocean. Global Biogeochem Cycles 19: 1-11.
4. Berner RA (1980) Early diagenesis: a theoretical approach. Princeton University Press, Princeton, NJ.
5. Biondi F, Gershunov A, Cayan D (2001) North Pacific decadal climate variability since AD 1661. J Clim 14: 5-10.
6. Bloom NS, Crecelius EA (1987) Distribution of silver, mercury, lead, copper, and cadmium in central Puget Sound sediments. Mar Chem 21: 377-390.
7. Boesch DF (2002) Challenges and opportunities for science in reducing nutrient over-enrichment of coastal ecosystems. Estuaries 25: 886-900.
8. Brandenberger JM, Crecelius EA, Louchouarn P (2008a) Historical inputs and natural recovery rates of heavy metals and organic biomarkers in Puget Sound during the 20th century. Environ Sci Technol 42: 6786-6790.
9. Brandenberger JM, Crecelius EA, Louchouarn P, Cooper SR, McDougall K, Leopold E, Liu G (2008b) Reconstructing trends in hypoxia using multiple paleoecological indicators recorded in sediment cores from Puget Sound, WA. National Oceanic and Atmospheric Administration, Silver Springs, MD.
10. Brandes JA, Devol A (1995) Simultaneous nitrate and oxygen respiration in coastal sediments: evidence for discrete diagenesis. J Mar Res 53: 771-797.
11. Bratton JF, Colman SM, Seal RRI (2003) Eutrophication and carbon sources in Chesapeake Bay over the last 2700 yr: human impacts in context. Geochim Cosmochim Acta 67(18): 3385-3402.
12. Brock V (1999) Stable carbon and nitrogen isotopes and C/N ratios as indicators of sources of suspended particulate matter and biological production/degradation in a hypoxic and highly productive estuary: Hood Canal, Puget Sound, WA. University of Washington, Seattle, WA.
13. Bruland KW (1983) Trace elements in seawater. In: Riley JP, Chester R (eds) Chemical oceanography, vol 8, 2nd edn. Academic, London.
14. Calvert SE, Pedersen TF (1993) Geochemistry of recent oxic and anoxic marine sediments: implications for the geological record. Mar Geol 113(1-2): 67-88.
15. Cifuentes LA, Sharp JH, Fogel ML (1988) Stable carbon and nitrogen isotope biogeochemistry in the Delaware estuary. Limnol Oceanogr 33(5): 1102-1115.
16. Cloern JE (2001) Our evolving conceptual model of the coastal eutrophication problem. Mar Ecol-Prog Ser 210: 223-253.
17. Collias EE, Lincoln JH (1977) A study of the nutrients in the main basin of Puget Sound. Municipality of Metropolitan Seattle, Seattle, WA.
18. Collias EE, McGary N, Barnes CA (1974) Atlas of physical and chemical properties of Puget Sound and its approaches. University of Washington Press, Seattle, WA.
19. Colodner D, Boyle EA, Edmond JM, Thomson J (1992) Post-depositional mobility of platinum, iridium and rhenium in marine sediments. Nature 358: 402-404.
20. Conley DJ (1998) An interlaboratory comparison for the measurement of biogenic silica in sediments. Mar Chem 63: 39-48.
21. Cook ER, Buckley BM, D'Arrigo R, Peterson MJ (2000) Warm-season temperature since 1600 BC reconstructed from Tasmanian tree rings and their relationship to large-scale sea surface temperatures anomalies. Clim Dynam 16: 79-91.
22. Cooper SR (1995) Chesapeake Bay watershed historical land-use-impact on water-quality and diatom communities. Ecol Appl 5(3): 703-723.
23. Cooper SR, Brush GS (1991) Long-term history of Chesapeake Bay anoxia. Science 254(5034): 992-996.
24. Cooper SR, McGlothlin SK, Madritch M, Jones DL (2004) Paleoecological evidence of human impacts on the Neuse and Pamlico Estuaries of North Carolina, USA. Estuaries 27(4): 617-633.
25. Cowie GL, Hedges JI (1992) The role of anoxia in organic-matter preservation in coastal sediments-relative stabilities of the major biochemicals under oxic and anoxic depositional conditions. Org Geochem 19(1-3): 229-234.
26. Crusius J, Thomson J (2000) Comparative behavior of authigenic Re, U, and Mo during reoxidation and subsequent long-term burial in marine sediments. Geochim Cosmochim Acta 64(13): 2233-2242.
27. Crusius J, Thomson J (2003) Mobility of authigenic rhenium, silver, and selenium during postdepositional oxidation in marine sediments. Geochim Cosmochim Acta 67(2): 265-273.
28. Crusius J, Calvert S, Pedersen T, Sage D (1996) Rhenium and molybdenum enrichments in sediments as indicators of oxic, suboxic and sulfidic conditions of deposition. Earth Planet Sci Lett 145: 65-78.
29. D'Arrigo R, Wiles G, Jacoby G, Villalba R (1999) North Pacific sea surface temperatures: past variations inferred from tree rings. Geophys Res Lett 26: 2757-2760.
30. Davis MB (1973) Pollen evidence of Changing land use around the Shores of Lake Washington. Northwest Sci 47(3): 133-148.
31. DeMaster DJ (1981) The supply and accumulation of silica in the marine environment. Geochim Cosmochim Acta 45: 1715-1732.
32. Eadie BJ, Mckee BA, Lansing MB, Robbins JA, Metz S, Trefry JH (1994) Records of nutrient-enhanced coastal ocean productivity in sediments from the Louisiana continental-shelf. Estuaries 17(4): 754-765.
33. Ebbesmeyer CC, Coomes CA, Cannon GA, Bretschneider DE (1989) Linkage of ocean fjord and dynamics at decadal period. In: Peterson DH, Aubrey DG (eds) Aspects of climate variability in the eastern Pacific and western Americas. American Geophysical Union, Washington, DC.
34. Emerson SR, Huested SS (1991) Ocean anoxia and the concentrations of molybdenum and vanadium in seawater. Mar Chem 34(3-4): 177-196.
35. Fogel ML, Cifuentes LA (1993) Isotope fractionation during primary production. In: Engel MH, Macko SA (eds) Organic geochemistry: principles and applications. Plenum Press, NY.
36. Glantz MH (1996) Currents of change: El Niño's impact on climate and society. Cambridge University Press, Cambridge, MA.
37. Gobeil C, Silverberg N, Sundby B, Cossa D (1987) Cadmium diagenesis in Laurentian through sediments. Geochim Cosmochim Acta 51: 589-596.
38. Goñi MA, Hedges JI (1992) Potential applications of cutin-derived CuO reaction products for discriminating vascular plant sources in natural environments. Geochim Cosmochim Acta 54: 3073-3081.
39. Goñi MA, Hedges JI (1995) Sources and reactivities of marine-derived organic-matter in coastal sediments as determined by alkaline Cuo oxidation. Geochim Cosmochim Acta 59: 2965-2981.
40. Gordon ES, Goñi MA (2003) Sources and distribution of terrigenous organic matter delivered by the Atchafalaya River to sediments in the northern Gulf of Mexico. Geochim Cosmochim Acta 67(13): 2359-2375.
41. Harris D, Horwath WR, van Kessel C (2001) Acid fumigation of soils to remove carbonates prior to total organic carbon or carbon-13 isotopic analysis. Soil Sci Soc Am J 65(6): 1853-1856.
42. Heaton THE (1986) Isotopic studies of nitrogen pollution in the hydrosphere and atmosphere-a review. Chem Geol 59(1): 87-102.
43. Hedges JI, Ertel JR (1982) Characterization of lignin by gas capillary chromatography of cupric oxide oxidation products. Anal Chem 54: 174-178.
44. Hedges JI, Clark WA, Cowie GL (1988a) Fluxes and reactivities of organic-matter in a Coastal Marine Bay. Limnol Oceanogr 33(5): 1137-1152.
45. Hedges JI, Clark WA, Cowie GL (1988b) Organic-matter sources to the water column and surficial sediments of a Marine Bay. Limnol Oceanogr 33(5): 1116-1136.
46. Hedges JI, Cowie GL, Richey JE, Quay PD, Benner R, Strom M, Forsberg BR (1994) Origin and processing of organic matter in the Amazon River as indicated by carbohydrates and amino-acids. Limnol Oceanogr 39(4): 743-761.
47. Hedges JI, Keil RG, Benner R (1997) What happens to terrestrial organic matter in the ocean? Org Geochem 25(5/6): 195-212.
48. Henrichs SM (1992) Early diagenesis of organic-matter in marine-sediments-progress and perplexity. Mar Chem 39(1-3): 119-149.
49. Houel S, Louchouarn P, Lucotte M, Canuel R, Ghaleb B (2006) Translocation of soil organic matter following reservoir impoundment in boreal systems: implications for in situ productivity. Limnol Oceanogr 51(3): 1497-1513.
50. Johannessen SC, O'Brien MC, Denman KL, Macdonald DM (2005) Seasonal and spatial variations in the source and transport of sinking particles in the Strait of Georgia, British Columbia, Canada. Mar Geol 216: 59-77.
51. Keil RG, Tsamakis E, Giddings JC, Hedges JI (1998) Biochemical distributions (amino acids, neutral sugars, and lignin phenols) among size-classes of modern marine sediments from the Washington coast. Geochim Cosmochim Acta 62(8): 1347-1364.
52. Kemp WM, Boynton WR, Adolf JE, Boesch DF, Boicourt WC, Brush G, Cornwell JC, Fisher TR, Glibert PM, Hagy JD, Harding LW, Houde ED, Kimmel DG, Miller WD, Newell RIE, Roman MR, Smith EM, Stevenson JC (2005) Eutrophication of Chesapeake Bay: historical trends and ecological interactions. Mar Ecol-Prog Ser 303: 1-29.
53. Kögel-Knabner I, Hatcher PG, Zech W (1991) Chemical structure studies of forest soil humic acids: aromatic carbon fraction. Soil Sci Soc Am J 55: 241-247.
54. Koide M, Bruland KW, Goldberg ED (1973) Th-228/Th-232 and Pb-210 geochronologies in marine and lake sediments. Geochim Cosmochim Acta 37: 1171-1187.
55. Kuehl SA, Nittrouer CA, DeMaster DJ, Curtin TB (1985) A long, square-barrel gravity corer for sedimentological and geochemical investigations of fine-grained sediments. Mar Geol 62: 365-370.
56. Kuo L-J, Louchouarn P, Herbert BE (2008) Fate of CuO-derived lignin oxidation products during plant combustion: application to the evaluation of charcoal inputs to soil organic matter. Org Geochem 39: 1522-1536.
57. Kuo L-J, Louchouarn P, Herbert BE, Brandenberger JM, Wade TL, Crecelius EA (2011) Combustion-derived substances in deep basins of Puget Sound: historical inputs from fossil fuel and biomass combustion. Environ Pollut 159(4): 983-990.
58. Lansard B, Rabouille C, Denis L, Grenz C (2008) In situ oxygen uptake by coastal sediments under the influence of the Rhone River (NW Mediterranean Sea) Cont. Shelf Res 28: 1501-1510.
59. 210Pb measurements. National Oceanic and Atmospheric Administration, Silver Spring, MD.
60. Lavelle JW, Massoth GJ, Crecelius EA (1986) Accumulation rates of recent sediments in Puget Sound, Washington. Mar Geol 72: 59-70.
61. Lebel J, Silverberg N, Sundby G (1982) Gravity core shortening and pore water chemical gradients. Deep-Sea Res 29: 1365-1372.
62. Leopold EB, Nickmann R, Hedges JI, Ertel JR (1982) Pollen and lignin records of late quaternary vegetation, Lake Washington. Science 218: 1305-1307.
63. Louchouarn P, Lucotte M (1998) A historical reconstruction of organic and inorganic contamination events in the Saguenay/St-Lawrence system from preindustrial times to the present. Sci Total Environ 213: 139-150.
64. Louchouarn P, Lucotte M, Duchemin E, deVernal A (1997) Early diagenetic processes in recent sediments of the Gulf of St-Lawrence: phosphorus, carbon and iron burial rates. Mar Geol 139(1-4): 181-200.
65. Louchouarn P, Lucotte M, Farella N (1999) Historical and geographical variations of sources and transport of terrigenous organic matter within a large-scale coastal environment. Org Geochem 30(7): 675-699.
66. Louchouarn P, Opsahl S, Benner R (2000) Isolation and quantification of dissolved lignin from natural waters using solid-phase extraction (SPE) and GC/MS Selected Ion Monitoring (SIM). Anal Chem 13: 2780-2787.
67. Louchouarn P, Amon R, Duan S, Pondell C, Seward SM, White N (2010) Analysis of lignin-derived phenols in standard reference materials and dissolved organic matter by gas chromatography/tandem mass spectrometry. Mar Chem 118: 85-97.
68. Macdonald RW, Pedersen TF (1991) Geochemistry of sediments of the Western Canadian Continental-Shelf. Cont Shelf Res 11(8-10): 717-735.
69. Macdonald RW, Macdonald DM, Obrien MC, Gobeil C (1991) Accumulation of Heavy-Metals (Pb, Zn, Cu, Cd), Carbon and Nitrogen in Sediments from Strait of Georgia, BC, Canada. Mar Chem 34(1-2): 109-135.
70. Macdonald RW, Johannessen SC, Gobeil C, Wright C, Burd B, van Roodselaar A, Pedersen TF (2008) Sediment redox tracers in Strait of Georgia sediments-Can they inform us of the loadings of organic carbon from municipal wastewater? Mar Environ Res 66: S87-S100.
71. Mackas DL, Harrison PJ (1997) Nitrogenous nutrient sources and sinks in the Juan de Fuca Straight/Strait of Georgia/Puget Sound estuarine system: assessing the potential for eutrophication. Estuar Coast Shelf Sci 44: 1-21.
72. Macko SA, Ostrom NE (1994) Pollution studies using stable isotopes. In: Lajtha K, Michener RH (eds) Stable isotopes in ecology and environmental science. Blackwell Publishing, London.
73. Macko SA, Engel MH, Parker PL (1993) Early diagenesis of organic matter in sediments: assessment of mechanisms and preservation by the use of isotopic molecular approaches. Organic geochemistry: Principles and applications. Plenum Press, NY.
74. Mantua NJ, Hare SR, Zhang Y, Wallace JM, Francis RC (1997) A Pacific interdecadal climate oscillation with impacts on salmon production. B Am Meteorol Soc 78: 1069-1079.
75. Mariotti A, Lancelot C, Billen G (1984) Natural isotopic composition of nitrogen as a tracer of origin for suspended organic-matter in the Scheldt estuary. Geochim Cosmochim Acta 48(3): 549-555.
76. McKay JL, Pedersen TF, Mucci A (2007) Sedimentary redox conditions in continental margin sediments (N. E. Pacific)-influence on the accumulation of redox-sensitive trace metals. Chem Geol 238: 180-196.
77. Mestas-Nuñez AM, Miller AJ (2006) Interdecadal variability and climate change in the eastern tropical Pacific: a review. Prog Oceanogr 69: 267-284.
78. Meyers PA (1994) Preservation of elemental and isotopic source identification of sedimentary organic matter. Chem Geol 114(3-4): 289-302.
79. Meyers PA (1997) Organic geochemical proxies of paleoceanographic, paleolimnologic, and paleoclimatic processes. Org Geochem 27(5-6): 213-250.
80. Meyers PA (2003) Applications of organic geochemistry to paleolimnological reconstructions: a summary of examples from the Laurentian Great Lakes. Org Geochem 34: 21-289.
81. Moore SK, Mantua NJ, Newton JA, Kawase M, Warner MJ, Kellog JP (2008a) A descriptive analysis of temporal and spatial patterns of variability in Puget Sound oceanographic properties. Estuar Coast Shelf Sci 80: 545-554.
82. Moore SK, Mantua NJ, Kellogg JP, Newton JA (2008b) Local and large-scale climate forcing of Puget Sound oceanographic properties on seasonal to interdecadal timescales. Limnol Oceanogr 53(5): 1746-1758.
83. Moore JK, Mantua NJ, Hickey BM, Trainer VL (2010) The relative influences of El Nino-Southern Oscillation and Pacific Decadal Oscillation on paralytic shellfish toxin accumulation in Pacific northwest shellfish. Limnol Oceanogr 55: 2262-2274.
84. Morford J, Emerson S (1999) The geochemistry of redox sensitive trace metals in sediments. Geochim Cosmochim Acta 63: 1735-1750.
85. Morford JL, Russell AD, Emerson S (2001) Trace metal evidence for changes in the redox environment associated with the transition from terrigenous clay to diatomaceous sediment, Saanich Inlet, BC. Mar Geol 174: 355-369.
86. Morford JL, Martin W, Kalnejais L, Francois R, Karle IM (2005) Geochemical cycling of U, Re and Mo in coastal sediments. Geochim Cosmochim Acta 69(10): A583-A583.
87. Morse JW, Rowe GT (1999) Benthic biogeochemistry beneath the Mississippi River plume. Estuaries 22: 206-214.
88. National Research Council (2000) Clean coastal waters: understanding and reducing the effects of nutrient pollution. National Academy Press, Washington, DC.
89. Nevissi AE, Shott GJ, Crecelius EA (1989) Comparison of two gravity coring devices for sedimentation rate measurements by 210Pb dating techniques. Hydrobiologia 179: 261-269.
90. Newton J, Bassin C, Devol A, Kawase M, Ruef W, Warner M, Hannafious D, Rose R (2007) Hypoxia in hood canal: an overview of status and contributing factors. In: 2007 Georgia Basin Puget Sound Research Conference, Vancouver, British Columbia.
91. Nozaki Y (1997) A fresh look at element distribution in the North Pacific Ocean. Eos Trans AGU 78: 221.
92. Nuwer JM, Keil RG (2005) Sedimentary organic matter geochemistry of Clayoquot Sound, Vancouver Island, British Columbia. Limnol Oceanogr 50(4): 1119-1128.
93. Otto A, Simpson MJ (2006) Evaluation of CuO oxidation parameters for determining the source and stage of lignin degradation in soil. Biogeochemistry 80(2): 121-142.
94. Paulson AJ, Curl HC, Feely RA (1993) The biogeochemistry of nutrients and trace metals in Hood Canal, a Puget Sound fjord. Mar Chem 43: 157-173.
95. Paulson AJ, Konrad CP, Frans LM, Noble M, Kendall C, Josberger EG, Huffman RL, Olsen TD (2006) Freshwater and saline loads of dissolved inorganic nitrogen to Hood Canal and Lynch Cove, Western Washington. U. S. Geological Survey Scientific Investigations Report, Reston, Virginia.
96. Pedersen TF, Waters RD, Macdonald RW (1989) On the natural enrichment of cadmium and molybdenum in the sediments of Ucluelet Inlet, British Columbia. Sci Total Environ 79: 125-139.
97. Pew Oceans Commission (2003) America's living oceans: charting a coarse for the sea change. A report on the nation. Recommendations for new ocean policy. Pew Oceans Commission, Washington, DC, pp 166.
98. Piper DZ, Isaacs CM (1995) Minor elements in Quaternary sediment from the Sea of Japan: a record of surface-water productivity and intermediate-water redox conditions. Geol Soc Am Bull 107(1): 54-67.
99. Pocklington R, MacGregor CD (1973) The determination of lignin in marine sediments and particulate form in seawater. Int J Environ Anal Chem 3: 81-93.
100. Prahl FG, Ertel JR, Goni MA, Sparrow MA, Eversmeyer B (1994) Terrestrial organic carbon contributions to sediments on the Washington margin. Geochim Cosmochim Acta 58: 3035-3048.
101. Rabalais NN, Turner RE, Sen Gupta BK, Boesch DF, Chapman P, Murrell MC (2007a) Hypoxia in the northern Gulf of Mexico: Does the science support the plan to reduce, mitigate, and control hypoxia? Estuar Coast 30(5): 753-772.
102. Rabalais NN, Turner RE, Sen Gupta BK, Platon E, Parsons ML (2007b) Sediments tell the history of eutrophication and hypoxia in the Northern Gulf of Mexico. Ecol Appl 17(5): S129-S143.
103. Rabouille C, Conley DJ et al (2008) Comparison of hypoxia among four river-dominated ocean margins: the Changjiang (Yangtze), Mississippi, Pearl, and Rhône Rivers. Cont Shelf Res 28: 1527-1537.
104. Rosenthal Y, Boyle EA, Labeyrie L, Oppo D (1995a) Glacial enrichments of authigenic Cd and U in subantarctic sediments: a climate control on the elements' Oceanic Budget? Paleoceanography 10(3): 395-413.
105. Rosenthal Y, Lam P, Boyle EA, Thomson J (1995b) Authigenic cadmium enrichments in suboxic sediments: precipitation and postdepositional mobility. Earth Planet Sci Lett 132(1-4): 99-111.
106. Russell AD, Morford JL (2001) The behavior of the redox-sensitive metals across a laminated-massive-laminated transition in Saanich Inlet, British Columbia. Mar Geol 174: 341-354.
107. Sánchez-García L, Ramón de-Andrés J, Martín-Rubí A, Louchouarn P (2008) Diagenetic state and source signatures of humic and bulk terrigenous organic matter inputs to the inner continental shelf of the Gulf of Cádiz, (SW Spain): a biomarker study. Org Geochem 40: 184-194.
108. Sarkanen KV, Ludwig CH (1971) Lignins: occurrence, formation, structure and reactions. Wiley-Interscience, New York.
109. Simenstad CA, Wissmar RC (1985) Delta-C-13 evidence of the origins and fates of organic-carbon in estuarine and nearshore food webs. Mar Ecol-Prog Ser 22(2): 141-152.
110. Struck U, Emeis KC, Voss M, Christiansen C, Kunzendorf H (2000) Records of southern and central Baltic Sea eutrophication in delta C-13 and delta N-15 of sedimentary organic matter. Mar Geol 164(3-4): 157-171.
111. Sundby B, Martinez P, Gobeil C (2004) Comparative geochemistry of cadmium, rhenium, uranium, and molybdenum in continental margin sediments. Geochim Cosmochim Acta 68(11): 2485-2493.
112. Swanson JR (1980) Carbon isotope analysis of carbonaceous compounds in Puget Sound and Lake Washington. Ph. D. Dissertation, University of Washington, Seattle, WA.
113. Tareq SM, Tanaka N, Ohta K (2004) Biomarker signature in tropical wetland: lignin phenol vegetation index (LPVI) and its implications for reconstructing the paleoenvironment. Sci Total Environ 324(1-3): 91-103.
114. Tareq SM, Handa N, Tanoue E (2006) A lignin phenol proxy record of mid Holocene paleovegetation changes at Lake DaBuSu, northeast China. J Geochem Explor 88(1-3): 445-449.
115. Tesi T, Miserocchi S, Goñi MA, Langone L (2007) Source, transport and fate of terrestrial organic carbon on the western Mediterranean Sea, Gulf of Lions, France. Mar Chem 105: 101-117.
116. Thom RM, Parkwell TL, Niyogi DK, Shreffler DK (1994) Effects of graveling on the primary productivity, respiration and nutrient flux of two estuarine tidal flats. Mar Biol 118: 329-341.
117. Tribovillard N, Algeo T, Lyons T, Riboulleau A (2006) Trace metals as paleoredox and paleoproductivity proxies: an update. Chem Geol 232: 12-32.
118. Turekian KK, Wedepohl KH (1961) Distribution of the elements in some major units of the earth's crust. Geol Soc Am Bull 72: 175-192.
119. Turner RE, Rabalais NN, Fry B, Atilla N, Milan CS, Lee JM, Normandeau C, Oswald TA, Swenson EM, Tomasko DA (2006a) Paleo-indicators and water quality change in the Charlotte Harbor estuary (Florida). Limnol Oceanogr 51(1): 518-533.
120. Turner RE, Rabalais NN, Justic D (2006b) Predicting summer hypoxia in the northern Gulf of Mexico: Riverine N, P, and Si loading. Mar Pollut Bull 52(2): 139-148.
121. Wada E, Minagawa M, Mizutani H, Tsuji T, Imaizumi R, Karasawa K (1987) Biogeochemical studies on the transport of organic-matter along the Otsuchi River Watershed, Japan. Estuar Coast Shelf Sci 25(3): 321-336.
122. Walsh EM, Ingalls AE, Keil RG (2008) Sources and transport of terrestrial organic matter in Vancouver Island fjords and the Vancouver-Washington Margin: a multiproxy approach using delta δ13Corg, lignin phenols, and the ether lipid BIT index. Limnol Oceanogr 53(3): 1054-1063.
123. Yang YL, Elderfield H, Pedersen TF, Ivanovich M (1995) Geochemical record of the Panama basin during the last glacial maximum carbon event shows that the glacial ocean was not suboxic. Geology 23(12): 1115-1118.
124. Zhang H, Li S (2010) Effects of physical and biochemical processes on the dissolved oxygen budget for Pearl River Estuary during summer. J Mar System 79: 65-88.
125. Zimmerman AR, Canuel EA (2000) A geochemical record of eutrophication and anoxia in Chesapeake Bay sediments: anthropogenic influence on organic matter composition. Mar Chem 69(1-2): 117-137.
126. Zimmerman AR, Canuel EA (2002) Sediment geochemical records of eutrophication in the mesohaline Chesapeake Bay. Limnol Oceanogr 47(4): 1084-1093.