Abstract
While the global increase in the use of nitrogen-based fertilizers has been well recognized, another change in fertilizer usage has simultaneously occurred: a shift toward urea-based products. Worldwide use of urea has increased more than 100-fold in the past 4 decades and now constitutes >50% of global nitrogenous fertilizer usage. Global urea usage extends beyond agricultural applications; urea is also used extensively in animal feeds and in manufacturing processes. This change has occurred to satisfy the world’s need for food and more efficient agriculture. Long thought to be retained in soils, new data are suggestive of significant overland transport of urea to sensitive coastal waters. Urea concentrations in coastal and estuarine waters can be substantially elevated and can represent a large fraction of the total dissolved organic nitrogen pool. Urea is used as a nitrogen substrate by many coastal phytoplankton and is increasingly found to be important in the nitrogenous nutrition of some harmful algal bloom (HAB) species. The global increase from 1970 to 2000 in documented incidences of paralytic shellfish poisoning, caused by several HAB species, is similar to the global increase in urea use over the same 3 decades. The trend toward global urea use is expected to continue, with the potential for increasing pollution of sensitive coastal waters around the world.
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References
D. Anderson P.M. Glibert J.M. Burkholder (2002) ArticleTitleHarmful algal blooms and eutrophication: Nutrient sources, composition, and consequences Estuaries 25 704–726
N.J. Antia A.F. Landymore (1975) ArticleTitleThe non-biological oxidative degradation of dissolved xanthopterin and 2,4,6-trihydroxypteridine by the pH or salt content of seawater Mar. Chem. 3 347–363 Occurrence Handle10.1016/0304-4203(75)90013-4
Armstrong M.D. and Kudela R. 2003. Nitrogenous preference of toxic Pseudo-nitzschia spp. from enrichment experiments conducted in iron replete and iron deplete regions in central California. Second Symposium on Harmful Algae in the US, Woods HoleMA Dec. 2003 (abstract only).
S. Ayala (2002) ArticleTitleNitrogen in crop production – tough to curb liability Curr. Sci. 82 1067–1068
I.A. Bekheet P.J. Syrett (1977) ArticleTitleUrea-degrading enzymes in algae Br. Phycol. J. 12 137–143
J.M. Beman K.R. Arrigo P.A. Matson (2005) ArticleTitleAgricultural runoff fuels large phytoplankton blooms in vulnerable areas of the ocean Nature 434 211–214
G.M. Berg P.M. Glibert M.W. Lomas M.A. Burford (1997) ArticleTitleOrganic nitrogen uptake and growth by the chrysophyte Aureococcus anophagefferens during a brown tide event Mar. Biol. 129 377–387 Occurrence Handle10.1007/s002270050178
G.M. Berg M. Balode I. Purina S. Bekere C. Bechemin S.Y. Maestrini (2003) ArticleTitlePlankton community composition in relation to availability and uptake of oxidized and reduced nitrogen Aq. Microb. Ecol. 30 263–274
T. Berman D.A. Bronk (2003) ArticleTitleDissolved organic nitrogen: a dynamic participant in aquatic ecosystems Aq. Microb. Ecol. 31 279–305
T. Berman S. Chava (1999) ArticleTitleAlgal growth on organic compounds as nitrogen sources J. Plank Res. 21 1423–1437
R.R. Bidigare (1983) Nitrogen excretion by marine zooplankton E.J. Carpenter D.G. Capone (Eds) Nitrogen in the Marine Environment Academic Press New York 385–409
C.E. Boyd Y. Musing (1992) Shrimp pond effluents: observations of the nature of the problem on commercial farms J. Wyban (Eds) Proceedings of the Special Session on Shrimp Farming World Aquaculture Society Baton Rouge, Louisiana
M.A. Burford P.M. Glibert (1999) ArticleTitleShort-term nitrogen uptake and regeneration in early and late growth-phase shrimp ponds Aquaculture Res. 30 215–227 Occurrence Handle10.1046/j.1365-2109.1999.00314.x
E.J. Carpenter C.C. Remsen S.W. Watson (1972) ArticleTitleUtilization of urea by some marine phytoplankters Limnol. Oceanogr. 17 265–269
K. Celik I.E. Ersoy F. Savran (2003) ArticleTitleFeeding of urea treated wheat straw in Saanen goat male kids Pakistan J. Nutrition 2 258–261
T.D. Chadwick P.A. Wright (1999) ArticleTitleNitrogen excretion and expression of urea cycle enzymes in the Atlantic cod (Gadus morhua L.): a comparison of early life stages with adults J. Exper. Biol. 19 2653–2662
F.H. Chang J.M. Bradford-Grieve W.F. Vincent P.H. Woods (1995) ArticleTitleNitrogen uptake by summer size-fractionated phytoplankton assemblages in the Westland, New Zealand, upwelling system New Zealand J. Mar. Freshwater Res. 29 147–161
B.C. Cho F. Azam (1995) ArticleTitleUrea decomposition by bacteria in the Southern California Bight and its implications for the mesopelagic nitrogen cycle Mar. Ecol. Prog. Ser. 122 21–26
B.C. Cho M.G. Park J.H. Shim F. Azam (1996) ArticleTitleSignificance of bacteria in urea dynamics in coastal surface waters Mar. Ecol. Prog. Ser. 142 19–26
Cochlan W.P., Herndon J., Ladizinsky N.C. and Kudela R.M. 2005. Nitrogen uptake by the toxigenic diatom Pseudo-nitzschia australis. GEOHAB Open Science Meeting on HABs and Eutrophication, Baltimore, MD March 2005 (abstract only).
W.P. Cochlan J. Wikner (1993) Nitrogen uptake by size-fractionated microorganisms in the Gulf of Bothnia, Sweden The Oceanography Society Meeting Seattle, WA
J.E. Cohen (2003) ArticleTitleHuman population: the next half century Science 302 1172–1175 Occurrence Handle10.1126/science.1088665
Y. Collos C. Gagne M. Laabir A. Vaquer (2004) ArticleTitleNitrogenous nutrition of Alexandrium catenella (Dinophyceae) in cultures and in Thau Lagoon, Southern France J. Phycol. 40 96–103
K.M. Constant W.F. Sheldrick (1992) World Nitrogen Survey World Bank Technical paper 174 Washington, District of Columbia
E.D.S Corner B.S. Newell (1967) ArticleTitleOn the nutrition and metabolism of zooplankton. 4. The forms of nitrogen excreted by Calanus J. Mar. Biol. Assoc. U.K. 47 113–120
S.K. DeDatta A.C.F. Trevitt J.R. Freney W.N. Obcemea J.G. Real J.R. Simpson (1989) ArticleTitleMeasuring nitrogen losses from lowland rice using bulk aerodynamic and nitrogen-15 balance methods Soil Sci. Soc. Amer. J. 53 1275–1281
E.P. Dunigan R.A. Phelan C.L. Mondart (1976) ArticleTitleSurface runoff losses of fertilizer elements J. Envir. Quality 5 339–342
S.T. Dyhrman D.M. Anderson (2003) ArticleTitleUrease activity in cultures and field populations of the toxic dinoflagellate Alexandrium Limnol. Oceanogr. 48 647–655
Fable S., Kamakate F. and Venkatesh S. 2002. Selective Catalytic Reduction Urea Infrastructure Study. National Renewable Energy Laboratory Report NREL/SR-540–32689.
C. Fan P.M. Glibert J.M. Burkholder (2003) ArticleTitleCharacterization of the nitrogen uptake kinetics of Prorocentrum minimum in natural blooms and laboratory cultures Harmful Algae 2 283–299 Occurrence Handle10.1016/S1568-9883(03)00047-7
InstitutionalAuthorNameFAO (2001) FAOSTAT Database Collections (http://www.apps.fao.org) Food and Agriculture Organization of the United Nations Rome, Italy
Flogel M. 1998. Backgrounder on Sulfonyl Urea Herbicides. Vermont Public Interest Research Group.(http://www.vpig.org).
M.J. Furnas (1983) ArticleTitleNitrogen dynamics in lower Narragansett Bay, Rhode Island. 1. Uptake by size-fractionated phytoplankton populations J. Plank. Res. 5 657–676
J.N. Galloway J.D. Aber J.W. Erisman S.P. Seitzinger R.W. Howarth E.B. Cowling B.J. Cosby (2003) ArticleTitleThe nitrogen cascade BioScience 53 IssueID4 341–356
J.N. Galloway E.B. Cowling (2002) ArticleTitleNitrogen and the world Ambio 31 64–71
J.N. Galloway W.H. Schlesinger I.I.H. Levy A. Michaels J.L. Schnoor (1995) ArticleTitleNitrogen fixation: anthropogenic enhancement – environmental response Global Biogeochem. Cycles 9 235–252 Occurrence Handle10.1029/95GB00158
GEOHAB 2001. Global ecology and oceanography of harmful algal blooms. In: Glibert P. and Pitcher G. (eds), Science Plan. SCOR, Baltimore, Maryland and IOC, Paris, France, pp. 86.
P.M. Glibert J. Alexander T.M. Trice B. Michael R.E. Magnien L. Lane D. Oldach H. Bowers (2004a) Chronic urea nitrogen loading: a correlate of Pfiesteria spp. in the Chesapeake and Coastal Bays of Maryland K.A. Steidinger J.H. Landsberg C.R. Tomas G.A. Vargo (Eds) Harmful Algae 2002, Proceedings of the Xth International Conference on Harmful Algae Florida Fish and Wildlife Conservation Commission and Intergovernmental Ocenaogrpahic Commission of UNESCO USA 48–55
P.M. Glibert D.M. Anderson P. Gentien E. Graneli K.G. Sellner (2005c) ArticleTitleThe global, complex phenomena of harmful algal blooms Oceanography 18 IssueID2 130–141
P.M. Glibert C. Garside J. Fuhrman M.R. Roman (1991) ArticleTitleTime- and size-dependent coupling of organic and inorganic nitrogen uptake and NH +4 regeneration in the plume of the Chesapeake Bay, and its regulation by large heterotrophs Limnol. Oceanogr. 36 895–909
P.M. Glibert C.A. Heil D. Hollander M. Revilla A. Hoare J. Alexander S. Murasko (2004b) ArticleTitleEvidence for dissolved organic nitrogen and phosphorus uptake during a cyanobacterial bloom in Florida Bay Mar. Ecol. Prog. Ser. 280 73–83
Glibert P.M., Heil C.A., O’Neil J.M. and O’Donohue M.J.H. In press. Nitrogen, phosphorus, silica and carbon in Moreton bay, Queensland, Australia: Differential limitation of biomass and production. Estuaries. (still in press).
P.M. Glibert R. Magnien M.W. Lomas J. Alexander C. Fan E. Haramoto T.M. Trice T.M. Kana (2001) ArticleTitleHarmful algal blooms in the Chesapeake and Coastal Bays of Maryland, USA: Comparison of 1997, 1998, and 1999 events Estuaries 24 875–883
P.M. Glibert S. Seitzinger C.A. Heil J.A. Burkholder M.W. Parrow L.A. Codispoti V. Kelly (2005b) ArticleTitleThe role of eutrophication in the global proliferation of harmful algal blooms: new perspectives and approaches Oceanography 18 IssueID2 196–207
P.M. Glibert T.M. Trice B. Michael L. Lane (2005a) ArticleTitleUrea in the tributaries of the Chesapeake and Coastal Bays of Maryland Water Air Soil Poll. 160 229–243 Occurrence Handle10.1007/s11270-005-2546-1
C.J. Gobler M.J. Renaghan N.J. Buck (2002) ArticleTitleImpacts of nutrients and grazing mortality on the abundance of Aureococcus anophagefferens during a New York brown tide bloom Limnol. Oceanogr. 47 129–141
R.M. Gordillo M.L. Cabrera (1997) ArticleTitleMineralizable nitrogen in broiler litter: I Effect of selected litter chemical characteristics J. Envir. Quality 26 1672–1679
B. Gu K. Haven C. Schelske B. Rosen (1997) ArticleTitleUptake of dissolved nitrogen by phytoplankton in a eutrophic subtropical lake J. Plank. Res. 19 759–770
G.M. Hallegraeff (1993) ArticleTitleA review of harmful algal blooms and their apparent global increase Phycologia 32 79–99
Hamdi A. and Ashkar S. 1999. The growing capability of AFA member companies to meet global fertilizer demand. IFA Regional Conference for Asia and the Pacific, Kuala Lumpur, Malaysia14–17 November 1999.
D.A. Hansell J.J. Goering (1989) ArticleTitleA method for estimating uptake and production rates for urea in seawater using [14C] and [15N] urea Can. J. Fish. Aq. Sci. 46 198–202
Hardlin B. 1998. Managing manure nitrogen to curb odors. Agricul Res. October 1998, p. 22.
W.G. Harrison E.J.H. Head R.J. Conover A.R. Longhurst D.D. Sameoto (1985) ArticleTitleThe distribution and metabolism of urea in the eastern Canadian Arctic Deep-Sea Res. 32 23–42 Occurrence Handle10.1016/0198-0149(85)90015-9
W.A. Harvey J. Caperon (1976) ArticleTitleThe rate of utilization of ureaammoniumand nitrate by natural populations of marine phytoplankton in a eutrophic environment Pacific Sci. 30 329–340
R. Howarth D. Anderson J. Cloern C. Elfring C. Hopkinson B. Lapointe T. Malone N. Marcus K. McGlathery A. Sharpley D. Walker (2000) ArticleTitleNutrient pollution of coastal rivers, bays, and seas Issues in Ecology 7 1–15
R.W. Howarth A. Sharpley D. Walker (2002) ArticleTitleSources of nutrient pollution to coastal waters in the United States: Implications for achieving coastal water quality goals Estuaries 25 656–676
International Raw Materials, Ltd. 2000. Nitrogen in the Nineties. Granular urea market report1 January 2000.
Jackson M.D., Venkatesh S. and Fable S. 2001. Supplying urea for the on-road vehicle market. 7th Diesel Engine Emissions Reduction (DEER) Workshop, Fuels and lubricants section, August 9, 2001 (http://www.osti.gov/fcvt/deer2001/jackson.pdf).
Jones C. 1997. Reserve seeks solution to icy air travel problems. Air Force News, (http://www.af/mil/news/Nov1997/n19971125_971499.html).
T.M. Kana M.W. Lomas H.L. MacIntyre J.C. Cornwell C.J. Gobler (2004) ArticleTitleStimulation of the brown tide organismAureococcus anophagefferensby selective nutrient additions to in situ mesocosms Harmful Algae 3 377–388 Occurrence Handle10.1016/j.hal.2004.06.008
Z.G. Kaufman J.S. Lively E.J. Carpenter (1983) ArticleTitleUptake of nitrogenous nutrients by phytoplankton in a barrier island estuary: Great South Bay, New York Estuar. Coast. Shelf Sc. 17 483–493
B.R. Khakural A.K. Alva (1995) ArticleTitleHydrolysis of urea in two sandy soils under citrus production as influenced by rate and depth of placement Comm. Soil Sci. Plant Anal. 26 2143–2146
Kiss S. and Simihalan M. 2001. Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Kluwer.
S.A. Kokkinakis P. Wheeler (1998) ArticleTitleUptake of ammonium and urea in the northeast Pacific: comparison between netplankton and nanoplankton Mar. Ecol. -Prog. Ser. 43 113–124
S. Kristiansen (1983) ArticleTitleUrea as a nitrogen source for phytoplankton in the Oslofjord Mar. Biol. 74 17–24 Occurrence Handle10.1007/BF00394270
Kudela R.M., Armstrong M., Cochlan W.P. and Herndon J. 2005. A role for anthropogenically derived nitrogen in the formation of harmful algal blooms along the US west coast. GEOHAB Open Science Meeting on HABs and Eutrophication, Baltimore, MD, March 2005 (abstract only).
R.M. Kudela W.P. Cochlan (2000) ArticleTitleNitrogen and carbon uptake kinetics and the influence of irradiance for a red tide bloom off southern California Aq. Microb. Ecol. 21 31–47
L. Landesman (1994) ArticleTitleNegative impacts of coastal tropical aquaculture developments World Aquaculture 25 12–17
S.C.Y. Leong A. Murata Y. Nagashima S. Taguchi (2004) ArticleTitleVariability in toxicity of the dinoflagellate Alexandrium tamarense in response to different nitrogen sources and concentrations Toxicon 43 407–415 Occurrence Handle10.1016/j.toxicon.2004.01.015
A.J. Lewitus J.M. Burkholder H.B. Glasgow SuffixJr P.M. Glibert B.M. Willis K.C. Hayes (1999) ArticleTitleMixotrophy and nitrogen uptake by Pfiesteria piscicida (Dinophyceae) J. Phycol. 35 1430–1437
S. L’Helguen G. Slawyk P.L. Corre (2005) ArticleTitleSeasonal patterns of urea regeneration by size-fractionated microheterotrophs in well-mixed temperate coastal waters J. Plank. Res. 27 263–270
H.G. Livingston W.J.A. Payne M.T. Friend (1962) ArticleTitleUrea excretion in ruminants Nature 194 1057
M.W. Lomas P.M. Glibert G.M. Berg M. Burford (1996) ArticleTitleCharacterization of nitrogen uptake by natural populations of Aureococcus anophagefferens (Chrysophyceae) as a function of incubation duration, substrate concentration, light and temperature J. Phycol. 32 907–916 Occurrence Handle10.1111/j.0022-3646.1996.00907.x
M.W. Lomas T.M. Trice P.M. Glibert D.A. Bronk J.J. McCarthy (2002) ArticleTitleTemporal and spatial dynamics of urea uptake and regeneration rates, and concentrations in Chesapeake Bay Estuaries 25 469–482
B.A. Lomstein T.H. Blackburn K. Henriksen (1989) ArticleTitleAspects of nitrogen and carbon cycling in the northern Bering Shelf sediment. 1. The significance of urea turnover in the mineralization of NH +4 Mar. Ecol. Prog. Ser. 57 237–247
B.A. Lund T.H. Blackburn (1989) ArticleTitleUrea turnover in a coastal marine sediment measured by a 14C-urea short-term incubation J. Microb. Methods 9 297–308
Maritime Safety Authority of New Zealand 2003. Safe Seas Clean Seas, vol. 7, August 2003.
Marking S. 1995. No need to sweat urea losses anymore; urease inhibitor delays nitrogen volatilization. Soybean Digest, Nov. 1995.
Matthews E. and Hammond A. 1999. Critical Consumption Trends and Implications: Degrading Earth’s Ecosystems. World Resources Institute special publication.
M. Maurer P. Schwegler T.A. Larsen (2003) ArticleTitleNutrients in urine: energetic aspects of removal and recovery Water Sci. Technol. 48 37–46
P. Mayzaud (1973) ArticleTitleRespiration and nitrogen excretion of zooplankton. II. Studies of the metabolic characteristics of starved animals Mar. Biol. 21 19–28 Occurrence Handle10.1007/BF00351188
J.J. McCarthy (1972) ArticleTitleThe uptake of urea by natural populations of marine phytoplankton Limnol. Oceanogr. 17 738–748
J.J. McCarthy D. Kamykowski (1972) ArticleTitleUrea and other nitrogenous nutrients in La Jolla Bay during February, Marchand April 1970 Fish. Bull. 70 1261–1274
J.J. McCarthy W.R. Taylor J.L. Taft (1977) ArticleTitleNitrogenous nutrition of the plankton in the Chesapeake Bay. I. Nutrient availability and phytoplankton preferences Limnol. Oceanogr. 22 996–1011
Meisinger J.J. and Randall G.W. 1991. Estimating nitrogen budgets for soil–crop systems. In: Follett R.F. (eds), Managing Nitrogen for Groundwater Quality and Farm Profitability. Proceedings of the Symposium of the American Society of Agronomy, 80th Annual Meeting, Nov. 30, 1988, Anaheim, CA. Soil Science Society of America, Madison, Wisconsin, pp. 85–124.
C.A. Miller P.M. Glibert (1998) ArticleTitleNitrogen excretion by the calanoid copepod Acartia tonsa: results of mesocosm experiments J. Plank. Res. 20 1767–1780
O. Mitamura Y. Saijo (1980) ArticleTitleIn situ measurement of the urea decomposition rate and its turnover rate in the Pacific Ocean Mar. Biol. 58 147–152 Occurrence Handle10.1007/BF00396126
P.G. Moe J.V. Mannering C.B. Johnson (1968) ArticleTitleA comparison of nitrogen losses from urea and ammonium nitrate in surface runoff water Soil Sci. 105 428–433
M.R. Mulholland K. Ohki D.G. Capone (1999) ArticleTitleNitrogen utilization and metabolism relative to patterns of N2 fixation in cultures of Trichodesmium NIBB1967 J. Phycol. 35 977–988 Occurrence Handle10.1046/j.1529-8817.1999.3550977.x
Naylor R., Falcon W.P. and Puente-Gonzonez A. 2001. Policy reforms and Mexican agriculture: Views from the Yaqui Valley. CIMMYT Economics Program Paper no. 01–01, CIMMYT, Mexico City, Mexico, D.F., 200.
S.W. Nixon (1995) ArticleTitleCoastal marine eutrophication: a definition, social causes, and future concerns Ophelia 41 199–219
Noi V.V., Cuong P.K., Tuyen D.V. and Cuong V.C. 2001. Use of urea treated rice straw as one of the fibre components in the finishing diets of cattle. Proceedings – Workshop on Improved Utilization of by-products for Animal Feeding in Vietnam( http://www.vcn.vnn.vn/sp_pape/spec_5_4_2001_19.htm).
N. Nosengo (2003) ArticleTitleFertilized to death Nature 425 894–895
Nuwanyakpa M. and Butterworth M. 1986. Effect of ureamolasses, molasses–ureanuog cake and legume hay on the intake and digestibility of teff straw by highland sheep. In: Little D.A. and Said A.N. (eds), Utilization of Agricultural By-products as Livestock Feeds in Africa. Proceedings of a Workshop, September 1986.
L. Oliveira N.J. Antia (1986) ArticleTitleSome observations on the urea-degrading enzyme of the diatom Cyclotella crypticathe role of nickel in its production J. Plank. Res. 8 235–242
Overdahl C.J., Rehm Q.W. and Meredith H.L. 1991. Fertilizer Urea. University of Minnesota Extension service pub # FO-00636-GO.
J.H. Paul (1983) Uptake of organic nutrients E.J. Carpenter D.G. Capone (Eds) Nitrogen in the Marine Environment Academic Press New York 275–308
O. Prakash A.K. Alva S. Paramasivam (1999) ArticleTitleUse of urease inhibitor N-(n-butyl)-thiophosphoric triamide decreased nitrogen leaching from urea in a fine sandy soil Water Air Soil Poll. 116 587–595 Occurrence Handle10.1023/A:1005116911788
R.C. Prince R.R. Lessard J.R. Clark (2003) ArticleTitleBioremediation of oil spills Oil and Gas Science and Technology – Rev. IFP. 58 463–468
Prud’homme M. 2002. Summary report: Global fertilizer supply and trade 2002–2003. 28th IFA Enlarged Council Meeting, Cairo, Egypt, Dec. 2002.
Prud’homme M. 2003. Summary report: Global fertilizers and raw materials supply and supply/demand balances. 71st International Fertilizer Association Annual ConferencePhiladelphiaPA.May 2003, (http://www.fertilizer.org).
Prud’homme M. 2004. Global nitrogen fertilizer supply and demand outlook. The Third International Nitrogen Conference, Nanjing, China, October 2004 (abstract only).
Y. Qi Z. Zhang Y. Hong L. Songhui Z. Congju L. Yaqing (1993) Occurrence of red tides on the coasts of China T.J. Smayda Y. Shimizu (Eds) Toxic Phytoplankton Blooms in the Sea Elsevier AmsterdamNetherlands 43–46
Rabchevsky G.A. 1996. Nitrogen. U.S. Geological Survey – Minerals Information (http://minerals.usgs.gov/minerals/pubs/commodity/nitrogen/480495.pdf).
C. Remsen (1971) ArticleTitleThe distribution of urea in coastal and oceanic waters Limnol. Oceanogr. 16 732–740
Roy A.H. 2001. Fertilizer feeds the world. Fertilizer Industry Federation of Australia Inc. Conference28–29 May, 2001.
Salman A.D. 1996. The role of multi-nutrient blocks for sheep production in integrated cereal–livestock farming systems in Iraq. 2nd FAP Electronic ConferenceLivestock Feed Resources within Integrated Farming Systems, 9 September 1996–28 February 1997.
R. Sansoucy (1995) ArticleTitleNew developments in the manufacture and utilization of multinutrient blocks World Anim. Rev. 82 78–83
S.P. Seitzinger C. Kroeze A.F. Bouwman N. Caraco F. Dentener R.V. Styles (2002a) ArticleTitleGlobal patterns of dissolved inorganic and particulate nitrogen inputs to coastal systems: recent conditions and future projections Estuaries 25 640–655
S.P. Seitzinger R.W. Sanders R.V. Styles (2002b) ArticleTitleBioavailability of DON from natural and anthropogenic sources to estuarine plankton Limnol. Oeanogr. 47 353–366
Y. Shimizu N. Watanabe G. Wrensford (1993) Biosynthesis of brevetoxins and heterotrophic metabolism in Gymnodinium breve P. Lassus G. Arzul E. Erard-Le-Denn P. Gentien C. Marcaillou (Eds) Harmful Marine Algal Blooms Lavoisier Publishing Paris 351–357
A.P. Sierra Beltran R. Cortes Altamirano M.C. Cortes Lara (2005) ArticleTitleBlooms of Prorocentrum minimum (Pavillard) in Mexicopossible causes and consequences Harmful Algae. 4 507–518
T. Smayda (1990) Novel and nuisance phytoplankton blooms in the sea: evidence for a global epidemic E. Graneli B. Sundstrom L. Edler D.M. Anderson (Eds) Toxic Marine Phytoplankton Elsevier New York 29–40
V. Smil (2001) Enriching the Earth: Fritz HaberCarl Boschand the Transformation of World Food The MIT Press CambridgeUnited Kingdom
Soh K.G. 2001. Global supply and demand for urea. MITCO Marketing and Trading Forum 2001, Bangi, Malaysia, 27 August 2001.
Stefl B.A. and George K.F. 1992. Antifreezes and De-icing Fluids. Kirk-Othner Encyclopedia of Chemical Technology, John Wiley and Sons.
R. Stepanauskas N.O.G. Jorgensen O.R. Eigaard A. Zvikas L.J. Tranvik L. Leonardson (2002) ArticleTitleSummer inputs of riverine nutrients to the Baltic Sea: bioavailability and eutrophication relevance Ecol. Monogr. 72 579–597
M.S. Therkildsen G.M. King Baa Lund (1996) ArticleTitleUrea production and turnover following the addition of AMP, CMP, RNA and a protein mixture to a marine sediment Aq. Microb. Ecol. 10 173–179
W.H. Thomas (1968) Nutrient requirements and utilization: algae P.L. Altman D.S. Dittmer (Eds) Metabolism Federation of American Societies for Experimental Biology Bethesda, MD 210–228
M.H. Timperley R.J. Vigor-Brown M. Kawashima M. Ishigami (1985) ArticleTitleOrganic nitrogen compounds in atmospheric precipitation: their chemistry and availability to phytoplankton Ca. J. Fish. Aquat. Sci. 42 1171–1177
S.P. Tiwari V.B. Singh V.R. Mehra (1990) ArticleTitleUrea molasses mineral blocks as a feed supplement effect on growth and nutrient utilization in buffalo calves Anim. Feed Sci. Technol. 29 333–338 Occurrence Handle10.1016/0377-8401(90)90039-B
Tomas C. 2005. Nitrogen preference of the fish-killing flagellate Chattonella cf. verruculosa. GEOHAB Open Science Meeting on HABs and Eutrophication, Baltimore MD, March 2005 (abstract only).
V.L. Trainer B.-T.L. Eberhart J.C. Wekell N.G. Adams L. Hanson F. Cox J. Dowell (2003) ArticleTitleParalytic shellfish toxins in Puget Sound Washington State J. Shellfish Res. 22 213–223
US Environmental Protection Agency 1986. Quality Criteria for Water1986. Report No. EPA 440/5–86–001, U.S. EPAOffice of Water Regulation and Standards, Washington, District of ColumbiaMay 1, 1986.
D.E. Varela P.J. Harrison (1999) ArticleTitleSeasonal variability in nitrogenous nutrition of phytoplankton assemblages in the northeast subarctic Pacific Ocean Deep-Sea Res. II 46 2505–2538 Occurrence Handle10.1016/S0967-0645(99)00074-0
P. Wali V. Kumar J.P. SDingh (2003) ArticleTitleEffect of soil type exchangeable sodium percentage water contentand organic amendments on urea hydrolysis in some tropical Indian soils Aust. J. Soil Res. 41 1171–1176 Occurrence Handle10.1071/SR01090
P.J. Walsh M.J. Heitz C.E. Campbell G. Cooper M. Medina Y. Wang G. Goss V. Vincek C. Wood C. Smith (2000) ArticleTitleMolecular characterization of a urea transporter in the gill of the Gulf Toadfish (Opsanus beta) J. Exper. Biol. 203 2357–2364
C.M. Wood K.M. Gilmour S.F. Perry P. Part P.J. Walsh (1998) ArticleTitlePulsatile urea excretion in gulf toadfish (Opsanus beta): evidence for activation of a specific facilitated diffusion transport system J. Exper. Biol. 201 805–817
P.A. Wright A. Felskie P.M. Anderson (1995) ArticleTitleInduction of ornithine-urea cycle enzymes and nitrogen metabolism and excretion in rainbow trout (Oncorhynchus mykiss) during early life stages J. Exper. Biol. 198 127–135
J. Zhang (1994) ArticleTitleAtmospheric wet depositions of nutrient elements: correlations with harmful biological blooms in the Northwest Pacific coastal zones Ambio 23 464–468
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Glibert, P.M., Harrison, J., Heil, C. et al. Escalating Worldwide use of Urea – A Global Change Contributing to Coastal Eutrophication. Biogeochemistry 77, 441–463 (2006). https://doi.org/10.1007/s10533-005-3070-5
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DOI: https://doi.org/10.1007/s10533-005-3070-5