References

1. N.M. Scully, D.R.S. Lean (1994). The attenuation of ultraviolet radiation in temperate lakes. In: C.E. Williamson, H.E. Zagarese (Eds), The Impact of U V-B Radiation on Pelagic Freshwater Ecosystems (Arch. Hydrobiol., Beih. Ergebn. Limnol., 43,135-144). Stuttgart.

2. D.P. Morris, H.E. Zagarese, C.E. Williamson, E.G. Balseiro, B.R. Hargreaves, B. Modenutti, R.E. Moeller, C. Queimalinos (1995). The attenutation of solar UV radiation in lakes and the role of dissolved organic carbon. Limnol. Oceanogr., 40, 1381-1391.

3. N.D. Yan, W. Keller, N.M. Scully, D.R.S. Lean, P.J. Dillon (1996). Increased UV-B penetration in a lake owing to drought-induced acidification. Nature, 381,141-143.

4. I. Laurion, W.F. Vincent, D.R.S. Lean (1997). Underwater ultraviolet radiation: Development of spectral models for northern high latitude lakes. Photochem. Photo-biol., 65,107-114.

5. I. Laurion, M. Ventura, J. Catalan, R. Psenner, R. Sommaruga (2000). Attenuation of ultraviolet radiation in mountain lakes: Factors controlling the among- and within-lake variability. Limnol. Oceanogr., 45,1274-1288.

6. J.A.E. Gibson, W.F. Vincent, B. Nieke, R. Pienitz (2000). Control of biological exposure to UV radiation in the Arctic Ocean: Comparison of the roles of ozone and riverine dissolved organic matter. Arctic, 53, 372-382.

7. N.M. Scully, W.F. Vincent, D.R.S. Lean (2000). Exposure to ultraviolet radiation in aquatic ecosystems: estimates of mixing rate in Lake Ontario and the St. Lawrence River. Can. J. Fish. Aquat. Sci., 57,43-51.

8. D.P. Morris, B.R. Hargreaves (1997). The role of photochemical degradation of dissolved organic carbon in regulating the UV transparency of three lakes on the Pocono Plateau. Limnol. Oceanogr., 42, 239-249.

9. C.E. Williamson, R.S. Stemberger, D.P. Morris, T.M. Frost, S.G. Paulsen (1996). Ultraviolet radiation in North American lakes: Attenuation estimates from DOC measurements and implications for plankton communities. Limnol. Oceanogr., 41, 1024-1034.

10. C.E. Williamson, D.P. Morris, M.L. Pace, A.G. Olson (1999). Dissolved organic carbon and nutrients as regulators of lake ecosystems: Resurrection of a more integrated paradigm. Limnol. Oceanogr., 44, 795-803.

11. R.G. Zepp, T. Callaghan, D. Erickson (1995). Effects of increased solar ultraviolet-radiation on biogeochemical cycles. Ambio, 24,181-187.

12. R.G. Zika (1980). Marine organic photochemistry. In: E.K. Duursma, R. Dawson (Eds), Marine Organic Chemistry (pp. 299-325). Elsevier, Amsterdam.

13. O.C. Zafiriou, J. Joussotdubien, R.G. Zepp, R.G. Zika (1984). Photochemistry of natural waters. Environ. Sci. Technoi, 18, A358-A371.

14. R.G. Zepp (1988). Environmental photoprocesses involving natural organic matter. In: F.H. Frimmel, R.F. Christman (Eds), Humic Substances and their Role in the Environment (pp. 193-214). Wiley, Chichester.

15. F.H. Frimmel (1994). Photochemical aspects related to humic substances. Environ. Int., 20, 373-385.

16. W.L. Miller (1994). Recent advances in the photochemistry of natural dissolved organic matter. In: D. Crosby, G.R. Helz, R.G. Zepp (Eds), Aquatic and Surface Photochemistry (pp. 111-127). Lewis, Boca Raton.

17. E. Thurman (1985). Organic Geochemistry of Natural Waters. Martinus Nijhoff/Dr W. Junk, Dordrecht.

18. J.E. Bauer, P.M. Williams, E.R.M. Druffel (1992). C-14 Activity of dissolved organic-carbon fractions in the North-Central Pacific and Sargasso Sea. Nature, 357, 667-670.

19. E.R.M. Druffel, P.M. Williams, J.E. Bauer, J.R. Ertel (1992). Cycling of dissolved and particulate organic-matter in the open ocean. J. Geophys. Res.-Oceans, 97, 15639-15659.

20. K.J. Meyers-Schulte, J.I. Hedges (1986). Molecular evidence for a terrestrial component of organic matter dissolved in ocean water. Nature, 321, 61-63.

21. J.I. Hedges, R.G. Keil, R. Benner (1997). What happens to terrestrial organic matter in the ocean?, Org. Geochem., 27, 195-212.

22. S. Opsahl, R. Benner (1997). Distribution and cycling of terrigenous dissolved organic matter in the ocean. Nature, 386,480-482.

23. R.F.C. Mantoura, E.M.S. Woodward (1983). Conservative behaviour of riverine dissolved organic carbon in the Severn Estuary: chemical and geochemical implications. Geochim. Cosmochim. Acta, 41,1293-1309.

24. R.M.W. Amon, R. Benner (1994). Rapid cycling of high molecular weight dissolved organic matter in the ocean. Nature, 369, 549-552.

25. C.S. Hopkinson, I. Buffam, J. Hobbie, J. Vallino, M. Perdue, B. Eversmeyer, F. Prahl, J. Covert, R. Hodson, M.A. Moran, E. Smith, J. Baross, B. Crump, S. Findlay, K. Foreman (1998). Terrestrial inputs of organic matter to coastal ecosystems: An intercomparison of chemical characteristics and bioavailability. Biogeochemistry, 43, 211-234.

26. R.M.W. Amon, R. Benner (1996). Photochemical and microbial consumption of dissolved organic carbon and dissolved oxygen in the Amazon River system. Geochim. Cosmochim. Acta, 60, 1783-1792.

27. D.J. Kieber, J. McDaniel, K. Mopper (1989). Photochemical source of biological substrates in sea water: Implications for carbon cycling. Nature, 341, 637-639.

28. R.J. Kieber, X.L. Zhou, K. Mopper (1990). Formation of carbonyl compounds from UV induced photodegradation of humic substances in natural waters: Fate of riverine carbon in the sea. Limnol. Oceanogr., 35, 1503-1515.

29. W.L. Miller, R.G. Zepp (1995). Photochemical production of dissolved inorganic carbon from terrestrial organic matter: Significance to the oceanic organic carbon cycle. Geophys. Res. Lett., 22, 417-420.

30. K. Mopper, X.L. Zhou, R.J. Kieber, D.J. Kieber, R.J. Sikorski, R.D. Jones (1991). Photochemical degradation of dissolved organic carbon and its impact on the oceanic carbon cycle. Nature, 353, 60-62.

31. S. Opsahl, R. Benner (1998). Photochemical reactivity of dissolved lignin in river and ocean waters. Limnol. Oceanogr., 43, 1297-1304.

32. W.L. Miller (1998). Effects of UV radiation on aquatic humus: Photochemical principles and experimental considerations. In: D.O. Hessen, L.J. Tranvik (Eds), Aquatic humic substances: Ecology and Biogeochemistry (pp. 125-141). Springer, Berlin.

33. M.J. Lindell, W. Graneli, L.J. Tranvik (1995). Enhanced bacterial growth in response to photochemical transformation of dissolved organic matter. Limnol. Oceanogr., 40, 195-199.

34. R.G. Wetzel, P.G. Hatcher, T.S. Bianchi (1995). Natural photolysis by ultraviolet irradiance of recalcitrant dissolved organic matter to simple substrates for rapid bacterial metabolism. Limnol. Oceanogr., 40,1369-1380.

35. M.A. Moran, R.G. Zepp (1997). Role of photoreactions in the formation of biologically labile compounds from dissolved organic matter. Limnol. Oceanogr., 42, 1307-1316.

36. N. Bano, M.A. Moran, R.E. Hodson (1998). Photochemical formation of labile organic matter from two components of dissolved organic carbon in a freshwater wetland. Aquat. Microb. Ecoi, 16, 95-102.

37. S. Bertilsson, L.J. Tranvik (1998). Photochemically produced carboxylic acids as substrates for freshwater bacterioplankton. Limnol. Oceanogr., 43, 885-895.

38. S. Bertilsson, L.J. Tranvik (2000). Photochemical transformation of dissolved organic matter in lakes. Limnol. Oceanogr., 45, 753-762.

39. J.T.O. Kirk (1994). Light and Photosynthesis in Aquatic Ecosystems. Cambridge University Press, Cambridge.

40. J.G. Calvert, J.N. Pitts (1966). Photochemistry, Wiley, New York.

41. P.G. Coble, S.A. Green, N.V. Blough, R.B. Gagosian (1990). Characterization of dissolved organic matter in the Black Sea by fluorescence spectroscopy. Nature, 348, 432-435.

42. R.F. Chen, J.L. Bada (1992). The fluorescence of dissolved organic matter in seawater. Mar. Chem., 37, 191-221.

43. A. Vodacek (1992). An explanation of the spectral variation in fresh water CDOM fluorescence. Limnol. Oceanogr., 37,1808-1813.

44. S.A. Green, N.V. Blough (1994). Optical absorption and fluorescence properties of chromophoric dissolved organic matter in natural waters. Limnol. Oceanogr., 39, 1903-1916.

45. F.E. Hoge, M.E. Williams, R.N. Swift, J.K. Yungel, A. Vodacek (1995). Satellite retrieval of the absorption coefficient of chromophoric dissolved organic matter in continental margins. J. Geophys. Res.-Oceans, 100, 24847-24854.

46. P.G. Coble (1996). Characterization of marine and terrestrial DOM in seawater using excitation emission matrix spectroscopy. 51, 325-346.

47. R. Del Vecchio, N.V. Blough (2002). On the nature of the constituents underlying the absorption spectra of humic substances and chromophoric dissolved organic matter (CDOM). Eos, 83, OS32R-10.

48. D. Repeta, S. John (2002). Chemical characterization of colored dissolved organic matter in seawater. Eos, 83, OS22J-04.

49. E.R. Stabenau, C.A. Moore, R.G. Zika (2002). Application of LC/MSn to the study of DOM mediated optical properties: South Florida Coastal Zone 2001, Eos, 83, OS22J-05.

50. P.G. Waterman, S. Mole (1994). Analysis of Phenolic Plant Metabolites. Blackwell Scientific, London.

51. R.B. Roy (1996). Review of the UV digestion procedures for the automated analysis of waste effluents. Am. Environ. Lab., 8, 27-29.

52. D.J. Kieber, K. Mopper (1987). Photochemical formation of glyoxylic and pyruvic acids in seawater. Mar. Chem., 21, 135-149.

53. Y. Chen, S.U. Khan, M. Schnitzer (1978). Ultraviolet irradiation of dilute fulvic acid solution. Soil Sci. Soc. Am. J., 42, 292-296.

54. C.J. Miles, P.L. Brezonik (1981). Oxygen-consumption in humic-colored waters by a photochemical ferrous-ferric catalytic cycle. Environ. Sci. Technol., 15,1089-1095.

55. B.M. Voelker, F.M.M. Morel, B. Sulzberger (1997). Iron redox cycling in surface waters: Effects of humic substances and light. Environ. Sci. Technol., 31,1004-1011.

56. H.Z. Gao, R.G. Zepp (1998). Factors influencing photoreactions of dissolved organic matter in a coastal river of the southeastern United States. Environ. Sci. Technol., 32, 2940-2946.

57. R.A. Larson, E.J. Weber (1994). Environmental photochemistry. In: Reaction Mechanisms in Environmental Chemistry (pp. 359-413). Lewis, Boca Raton.

58. P.L. Brezonik (1994). Chemical Kinetics and Process Dynamics in AquaticsSystems. Lewis, Boca Raton.

59. R.M.W. Amon, R. Benner (1996). Bacterial utilization of different size classes of dissolved organic matter. Limnol. Oceanogr., 41,41-51.

60. R. Benner, J.D. Pakulski, M. McCarthy, J.I. Hedges, P.G. Hatcher (1992). Bulk chemical characteristics of dissolved organic matter in the ocean. Science, 255, 1561-1564.

61. R. Benner, B. Biddanda, B. Black, M. McCarthy (1997). Abundance, size distribution, and stable carbon and nitrogen isotopic compositions of marine organic matter isolated by tangential-flow ultrafiltration. Mar. Chem., 57, 243-263.

62. L. Guo, P.H. Santschi, L.A. Cifuentes, S.E. Trumbore, J. Southon (1996). Cycling of high-molecular-weight dissolved organic matter in the Middle Atlantic Bight as revealed by carbon isotopic (-13C and -14C) signatures. Limnol. Oceanogr., 41, 1242-1252.

63. P.H. Santschi, L. Guo, M. Baskaran, S. Trumbore, J. Southon, T.S. Bianchi, B. Honeyman, L.A. Cifuentes (1995). Isotopic evidence for the contemporary origin of high-molecular weight organic matter in oceanic environments. Geochim. Cosmochim. Acta, 59,625-631.

64. A. Nissenbaum, I.R. Kaplan (1972). Chemical and isotopic evidence for the in situ origin of marine humic substances. Limnol. Oceanogr., 17, 570-582.

65. M.A. Wilson, P.F. Barron, A.H. Gillam (1981). The structure of freshwater humic substances as revealed by 13C-NMR spectroscopy. Geochim. Cosmochim. Acta, 45, 1743-1750.

66. G.R. Harvey, D.A. Boran, L.A. Chesal, J.M. Tokar (1983). The structure of marine fulvic and humic acids. Mar. Chem., 12,119-132.

67. M.A. Wilson, A.H. Gillam, P. Collin (1983). Analysis of the structure of dissolved marine humic substances and their phytoplanktonic precursors by 'H and 13C nuclear magnetic resonance. Chem. Geol, 40,187-201.

68. J.R. Ertel, J.I. Hedges, E.M. Perdue (1984). Lignin signature of aquatic humic substances. Science, 223, 485-487.

69. J.R. Ertel, J.I. Hedges, A.H. Devol, J.E. Richey, M.D.G. Ribeiro (1986). Dissolved humic substances of the Amazon River system. Limnol. Oceanogr., 31, 739-754.

70. K.A. Thorn (1987). Structural characteristics of the IHSS Suwannee River fulvic and humic acids determined by solution state C-13 NMR spectroscopy. Adv. Humic Substances Res., 175-183.

71. W. Michaelis, H.H. Richnow, A. Jenisch (1989). Structural studies of marine and riverine humic matter by chemical degradation. Sci. Total Environ., 81-82, 41-50.

72. L. Wassenaar, R. Aravena, P. Fritz (1989). The geochemistry and evolution of natural organic solutes in groundwater, Radiocarbon, 31, 865-876.

73. J.A. Amador, P.J. Milne, C.A. Moore, R.G. Zika (1990). Extraction of chromophoric humic substances from seawater. Mar. Chem., 29, 1-17.

74. R. Francois (1990). Marine sedimentary humic substances - structure, genesis, and properties. Rev. Aquat. Sci., 3,41-80.

75. J. Baron, D. McKnight, A.S. Denning (1991). Sources of dissolved and particulate organic material in Loch Vale watershed, Rocky Mountain National Park, Colorado, USA. Biogeochemistry, 15, 89-110.

76. J.I. Hedges, P.G. Hatcher, J.R. Ertel, K.J. Meyersschulte (1992). A comparison of dissolved humic substances from seawater with Amazon River counterparts by 13C-NMR Spectrometry. Geochim. Cosmochim. Acta, 56,1753-1757.

77. M. McCarthy, J. Hedges, R. Benner (1996). Major biochemical composition of dissolved high molecular weight organic matter in seawater. Mar. Chem., 55,281-297.

78. A. Afcharian, Y. Levi, L. Kiene, P. Scribe (1997). Fractionation of dissolved organic matter from surface waters using macroporous resins. Water Res., 31, 2989-2996.

79. L.D. Guo, P.H. Santschi (1997). Composition and cycling of colloids in marine environments. Rev. Geophys., 35,17-40.

80. D.M. McKnight, R. Harnish, R.L. Wershaw, J.S. Baron, S. Schiff (1997). Chemical characteristics of particulate, colloidal, and dissolved organic material in Loch Yale Watershed, Rocky Mountain National Park. Biogeochemistry, 36, 99-124.

81. J. Peuravuori, K. Pihlaja (1997). Pyrolysis electron impact mass spectrometry in studying aquatic humic substances. Anal. Chim. Acta, 350, 241-247.

82. J. Peuravuori, K. Pihlaja (1997). Isolation and characterization of natural organic matter from lake water: Comparison of isolation with solid adsorption and tangential membrane filtration. Environ. Int., 23,441-451.

83. J. Peuravuori, K. Pihlaja, N. Valimaki (1997). Isolation and characterization of natural organic matter from lake water: Two different adsorption chromatographic methods. Environ. Int., 23,453-464.

84. F.H. Frimmel (1998). Characterization of natural organic matter as major constituents in aquatic systems. J. Cont. Hydrol., 35, 201-216.

85. J. Peuravuori, K. Pihlaja (1998). Multimethod characterization of lake aquatic humic matter isolated with sorbing solid and tangential membrane filtration. Anal. Chim. Acta, 364,203-221.

86. J. Peuravuori, N. Paaso, K. Pihlaja (1999). Characterization of lake-aquatic humic matter isolated with two different sorbing solid techniques: pyrolysis electron impact mass spectrometry. Anal. Chim. Acta, 391, 331-344.

87. O. Kracht, G. Gleixner (2000). Isotope analysis of pyrolysis products from Sphagnum peat and dissolved organic matter from bog water. Org. Geochem., 31,645-654.

88. T. Lehtonen, J. Peuravuori, K. Pihlaja (2000). Characterisation of lake-aquatic humic matter isolated with two different sorbing solid techniques: tetramethylammonium hydroxide treatment and pyrolysis-gas chromatography/mass spectrometry. Anal. Chim. Acta, 424,91-103.

89. P. Louchouarn, S. Opsahl, R. Benner (2000). Isolation and quantification of dissolved lignin from natural waters using solid-phase extraction and GC/MS. Anal. Chem., 72, 2780-2787.

90. G.R. Aiken, D.M. McKnight, K.A. Thorn, E.M. Thurman (1992). Isolation of hy-drophilic organic-acids from water using nonionic macroporous resins. Org. Geochem., 18, 567-573.

91. V.I. Esteves, N.M.A. Cordeiro, A.C. Duarte (1995). Variation on the adsorption efficiency of humic substances from estuarine waters using XAD resins. Mar. Chem., 51, 61-66.

92. K. Hautala, J. Peuravuori, K. Pihlaja (2000). Measurement of aquatic humus content by spectroscopic analyses. Water Res., 34, 246-258.

93. V. Roubeuf, S. Mounier, J.Y. Benaim (2000). Solid phase extraction applied to natural waters: efficiency and selectivity. Org. Geochem., 31,127-131.

94. R. Benner, J.I. Hedges (1993). A test of the accuracy of fresh water DOC measurements by high-temperature catalytic oxidation and UV-promoted persulfate oxidation. Mar. Chem., 41,161-165.

95. D.J. Strome, M.C. Miller (1978). Photolytic changes in dissolved humic substances. Verh. Int. Verein. Limnol., 20, 1248-1254.

96. A. Geller (1983). Degradability of dissolved organic lake water compounds in cultures of natural bacterial communities. Arch. Hydrobiol, 99,60-79.

97. S.A. Visser (1984). Seasonal changes in the concentration and color of humic substances in some aquatic environments. Freshwater Biol., 14, 79-87.

98. A. Geller (1986). Comparison of mechanisms enhancing biodegradability of refractory lake water constituents. Limnol. Oceanogr., 31, 755-764.

99. V. Ittekkot, B. Haake (1990). The terrestrial link in the removal of organic carbon in the sea. In: V. Ittekkot (Ed.), Facets of Modern Biogeochemistry (pp. 318-325). Springer-Verlag, New York.

100. J.A. Amador, M. Alexander, R.G. Zika (1991). Degradation of aromatic compounds bound to humic acid by the combined action of sunlight and microorganisms. Environ. Toxicol. Chem., 10, 475-482.

101. M.A. Moran, R.E. Hodson (1994). Support of bacterioplankton production by dissolved humic substances from three marine environments. Mar. Ecol. Prog. Ser., 110,241-247.

102. M. Lindell, H. Edling (1996). Influence of light on bacterioplankton in a tropical lake. Hydrobiologia, 323, 67-73.

103. M.J. Lindell, H.W. Graneli, L.J. Tranvik (1996). Effects of sunlight on bacterial growth in lakes of different humic content. Aquat. Microb. Ecol., 11, 135-141.

104. W.L. Miller, M.A. Moran (1997). Interaction of photochemical and microbial processes in the degradation of refractory dissolved organic matter from a coastal marine environment. Limnol. Oceanogr., 42,1317-1324.

105. R. Benner, B. Biddanda (1998). Photochemical transformations of surface and deep marine dissolved organic matter: Effects on bacterial growth. Limnol. Oceanogr., 43, 1373-1378.

106. I. Reche, M.L. Pace, J.J. Cole (1998). Interactions of photobleaching and inorganic nutrients in determining bacterial growth on colored dissolved organic carbon. Microb. Ecol., 36, 270-280.

107. S. Bertilsson, R. Stepanauskas, R. Cuadros-Hansson, W. Graneli, J. Wikner, L. Tranvik (1999). Photochemically induced changes in bioavailable carbon and nitrogen pools in a boreal watershed. Aquat. Microb. Ecol., 19, 47-56.

108. M.A. Moran, W.M. Sheldon, J.E. Sheldon (1999). Biodégradation of riverine dissolved organic carbon in five estuaries of the southeastern United States. Estuaries, 22, 55-64.

109. I. Obernosterer, B. Reitner, G.J. Herndl (1999). Contrasting effects of solar radiation on dissolved organic matter and its bioavailability to marine bacterioplankton. Limnol. Oceanogr., 44,1645-1654.

110. P.A. Raymond, J.E. Bauer (2000). Bacterial consumption of DOC during transport through a temperate estuary. Aquat. Microb. Ecoli 22,1-12.

111. T.N. Wiegner, S.P. Seitzinger (2001). Photochemical and microbial degradation of external dissolved organic matter inputs to rivers. Aquat. Microb. Ecol, 24, 27-40.

112. K. Mopper, W.L. Stahovec (1986). Sources and sinks of low molecular weight organic carbonyl compounds in seawater. Mar. Chem., 19, 305-321.

113. J.-F. Rontani (1991). Identification by GC/MS of acidic compounds produced during the photosenitized oxidation of normal and isoprenoid alkanes in seawater. Int. J. Environ. Anal Chem., 45,1-9.

114. N. Corin, P. Backlund, M. Kulovaara (1996). Degradation products formed during UV-irradiation of humic waters. Chemosphere, 33, 245-255.

115. C.L. Osburn, D.P. Morris, K.A. Thorn, R.E. Moeller (2001). Chemical and optical changes in freshwater dissolved organic matter exposed to solar radiation. Biogeochemistry., 54, 251-178.

116. M. Kulovaara, N. Corin, P. Backlund, J. Tervo (1996). Impact of UV254-radiation on aquatic humic substances. Chemosphere, 33, 783-790.

117. R.L. Valentine, R.G. Zepp (1993). Formation of carbon monoxide from the photodegradation of terrestrial dissolved organic carbon in natural waters. Environ. Sci. Technol., 27,409-412.

118. K. Salonen, A. Vahatalo (1994). Photochemical mineralization of dissolved organic matter in Lake Skjervatjern. Environ. Int., 20, 307-312.

119. W. Graneli, M. Lindell, L. Tranvik (1996). Photo-oxidative production of dissolved inorganic carbon in lakes of different humic content. Limnol. Oceanogr., 41,698-706.

120. W. Graneli, M. Lindell, B.M. De Faria, F.D. Esteves (1998). Photoproduction of dissolved inorganic carbon in temperate and tropical lakes - dependence on wavelength band and dissolved organic carbon concentration. Biogeochemistry., 43, 175-195.

121. A.V. Vahatalo, K. Salonen, M. Salkinoja-Salonen, A. Hatakka (1999). Photochemical mineralization of synthetic lignin in lake water indicates enhanced turnover of aromatic organic matter under solar radiation. Biodégradation, 10, 415-420.

122. M.A. Moran, W.M. Sheldon, R.G. Zepp (2000). Carbon loss and optical property changes during long-term photochemical and biological degradation of estuarine dissolved organic matter. Limnol. Oceanogr., 45,1254-1264.

123. A.V. Vahatalo, M. Salkinoja-Salonen, P. Taalas, K. Salonen (2000). Spectrum of the quantum yield for photochemical mineralization of dissolved organic carbon in a humic lake. Limnol. Oceanogr., 45, 664-676.

124. B. Allard, H. Boren, C. Pettersson, G. Zhang (1994). Degradation of humic substances by UV irradiation. Environ. Int., 20, 97-101.

125. I. Reche, M.L. Pace, J.J. Cole (1999). Relationship of trophic and chemical conditions to photobleaching of dissolved organic matter in lake ecosystems. Biogeochemistry., 44, 259-280.

126. R.A. Bourbonniere, W.L. Miller, R.G. Zepp (1997). Distribution, flux, and photochemical production of carbon monoxide in a boreal beaver impoundment. J. Geophys. Res.-Atmos., 102 , 29321-29329.

127. D.A. Francko, R.T. Heath (1982). UV-sensitive complex phosphorous: Association with dissolved humic material and iron in a bog lake. Limnol. Oceanogr., 27, 564-569.

128. K.L. Bushaw-Newton, M.A. Moran (1999). Photochemical formation of biologically available nitrogen from dissolved humic substances in coastal marine systems. Aquat. Microb. Ecol., 18, 285-292.

129. R.J. Kieber, A. Li, P.J. Seaton (1999). Production of nitrite from the photodegradation of dissolved organic matter in natural waters. Environ. Sci. Technol, 33, 993-998.

130. S.A. Opsahl, R.G. Zepp (2001). Photochemically-induced alteration of stable carbon isotope ratios (<513C) in terrigenous dissolved organic carbon. Geophys. Res. Lett., 28, 2417-2421.

131. E. Zanardi-Lamardo, C.D. Clark, R.G. Zika (2001). Frit inlet frit outlet flow field-flow fractionation: methodology for colored dissolved organic material in natural waters. Anal Chim. Acta, 443,171-181.

132. C.L. Osburn, H.E. Zagarese, D.P. Morris, B.R. Hargreaves, W. Cravero (2001). Calculation of spectral weighting functions for the solar photobleaching of chromo-phoric dissolved organic matter in temperate lakes. Limnol Oceanogr., 46, 1455-1467.

133. P.G. Coble, C.E. Del Castillo, B. Avril (1998). Distribution and optical properties of CDOM in the Arabian Sea during the 1995 Southwest Monsoon, 45, 2195-2223.

134. C.E. Del Castillo, P.G. Coble, J.M. Morell, J.M. Lopez, J.E. Corredor (1999). Analysis of the optical properties of the Orinoco River plume by absorption and fluorescence spectroscopy. Mar. Chem., 66, 35-51.

135. C.E. Del Castillo, F. Gilbes, P.G. Coble, F.E. Muller-Karger (2000). On the dispersal of riverine colored dissolved organic matter over the West Florida Shelf. Limnol. Oceanogr., 45,1425-1432.

136. P. Backlund (1992). Degradation of aquatic humic material by ultraviolet light. Chemosphere, 25,1869-1878.

137. H. DeHaan (1993). Solar UV light penetration and photodegradation of humic substances in peaty lake water. Limnol. Oceanogr., 38,1072-1076.

138. S. Bertilsson, S. Bergh (1999). Photochemical reactivity of XAD-4 and XAD-8 adsorbable dissolved organic compounds from humic waters. Chemosphere, 39, 2289-2300.

139. I. Reche, M.L. Pace, J.J. Cole (2000). Modeled effects of dissolved organic carbon and solar spectra on photobleaching in lake ecosystems. Ecosystems, 3, 419-432.

140. R.F. Whitehead, S. de Mora, S. Demers, M. Gosselin, P. Monfort, B. Mostajir (2000). Interactions of ultraviolet-B radiation, mixing, and biological activity on photo-bleaching of natural chromophoric dissolved organic matter: A mesocosm study. Limnol Oceanogr., 45, 278-291.

141. R.D. Rundel (1983). Action spectra and estimation of biologically effective UV radiation. Physiol. Plant., 58, 360-366.

142. J.J. Cullen, P.J. Neale (1997). Biological weighting functions for describing the effects of ultraviolet radiation in aquatic ecosystems. In: D.-P. Hader (Ed.), The Effects of Ozone Depletion on Aquatic Ecosystems (pp. 97-117). R. G. Landes.

143. C.L. Osburn, R.B. Coffin, T.J. Boyd (2002). Observed variation in the photoreactiv-ity of CDOM from freshwater, estuarine, and marine sources in the Chesapeake Bay. Eos, 83, OS31B-09.

144. G.R. Harvey, D.A. Boran, S.R. Piotrowicz, C.P. Weisel (1984). Synthesis of marine humic substances from unsaturated lipids. Nature, 309,244-246.

145. L.J. Tranvik (1993). Microbial transformation of labile dissolved organic matter into humic-like matter in seawater, 12,177-183.

146. N.O.G. Jorgensen, L. Tranvik, H. Edling, W. Graneli, M. Lindell (1998). Effects of sunlight on occurrence and bacterial turnover of specific carbon and nitrogen compounds in lake water. Fems Microbiol. Ecol., 25, 217-227.

147. L. Tranvik, S. Kokalj (1998). Decreased biodegradability of algal DOC due to interactive effects of UV radiation and humic matter. Aquat. Microb. Ecol., 14, 301-307.

148. A.M. Anesio, C.M.T. Denward, L.J. Tranvik, W. Graneli (1999). Decreased bacterial growth on vascular plant detritus due to photochemical modification. Aquat. Microb. Ecol, 17,159-165.

149. R.J. Kieber, L.H. Hydro, P.J. Seaton (1997). Photooxidation of triglycerides and fatty acids in seawater: Implication toward the formation of marine humic substances. Limnol. Oceanogr., 42,1454-1462.

150. R.J. Chrost, M.A. Faust (1999). Consequences of solar radiation on bacterial secondary production and growth rates in subtropical coastal water (Atlantic Coral Reef off Belize, Central America). Aquat. Microb. Ecol, 20, 39-48.

151. S. Ziegler, R. Benner (2000). Effects of solar radiation on dissolved organic matter cycling in a subtropical seagrass meadow. Limnol Oceanogr., 45, 257-266.

152. M.J. Lindell, H. Graneli, S. Bertilsson (2000). Seasonal photoreactivity of dissolved organic matter from lakes with contrasting humic content. Can. J. Fisheries Aquat. Sci., 57, 875-885.

153. S.C. Johannessen, W.L. Miller (2001). Quantum yield for the photochemical production of dissolved inorganic carbon in seawater. Mar. Chem., 76, 271-283.

154. R.G. Zepp, T.V. Callaghan, D.J. Erickson (1998). Effects of enhanced solar ultraviolet radiation on biogeochemical cycles. J. Photochem. Photobiol. B-Biol., 46, 69-82.

155. L.A. Molot, P.J. Dillon (1997). Photolytic regulation of dissolved organic carbon in northern lakes. Global Biogeochem. Cycles, 11, 357-365.

156. I. Reche, E. Pulido-Villena, J.M. Conde-Porcuna, P. Carrillo (2001). Photoreactivity of dissolved organic matter from high-mountain lakes of Sierra Nevada, Spain. Arct. Antarct. Alpine Res., 33, 426-434.

157. C. Gunning, L.A. Molot, P.J. Dillon (2001). Enhanced photo-oxidation of dissolved organic carbon in acidic fresh waters. Biogeochem., 52, 339-354.

158. C.L. Osburn (2000). Photochemical Changes in the Dissolved Organic Matter of Temperate Lakes: Implications for Organic Carbon Cycling and Lake Transparency (100 pp.). Lehigh University, Bethleham, PA.

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