Seagrass beds and coastal biogeochemistry

Seagrasses: Biology, Ecology and Conservation

Volumn , Issue , 2006, Pages 135-157

  Marbà, Núria ^a   Holmer, Marianne ^b   Gacia, Esperança ^c   Barron, Cristina ^a  

^a INSTITUTO MEDITERRÁNEO DE ESTUDIOS AVANZADOS   (Spain)

^b UNIVERSITY OF SOUTHERN DENMARK   (Denmark)

^c CENTRE D ESTUDIS AVANÇATS DE BLANES CEAB CSIC   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 84900177579     PISSN: None     EISSN: None     Source Type: Book    
DOI: 10.1007/978-1-4020-2983-7_6     Document Type: Chapter

References (149)

1. Agawin NSR and Duarte CM (2002) Evidence of direct particle trapping by a tropical seagrass meadow. Estuaries 25: 1205-1209
2. Alpine AE and Cloern JE (1992) Trophic interactions and direct physical effects control phytoplankton biomass and production in an estuary. Limnol Oceanogr 37: 946-955
3. Aristegui J, Duarte CM, Agustí S, Doval M, Alvarez-Salgado XA and Hansell DA (2002) Dissolved organic carbon support of respiration in the dark ocean. Science 298: 1967
4. Azzoni R, Giordani G, Bartoli M,Welsh DT andViaroli P (2001) Iron, sulphur and phosphorus cycling in the rhizosphere sediments of a eutrophic Ruppia cirrhosa meadow (Valle Smarlacca, Italy). J Sea Res 45: 15-26
5. Barber TR and Carlson PR Jr (1993) Effects of seagrass dieoff on benthic fluxes and porewater concentrations of-CO2, -H2S, and CH4 in Florida Bay sediments. In: Oremland RS (ed) Biogeochemistry of Global Change: Radioactively Active Trace Gases, pp 530-550. Chapman and Hall, New York
6. Barrón C, Duarte CM, Frankignoulle M and Vieira Borges A Organic carbon metabolism and carbonate dynamics in a Mediterranean seagrass (Posidonia oceanica) meadow. Limnol Oceanogr (submitted)
7. Barrón C, Marbà N, Terrados J, Kennedy H and Duarte CM (2004) Community metabolism and carbon budget along a gradient of seagrass (Cymodocea nodosa) colonization. Limnol Oceanogr 49: 1642-1651
8. Beer S and Rehnberg J (1997) The acquisition of inorganic carbon by the seagrass Zostera marina. Aquat Bot 56: 277-283
9. Benner R, Peele ER and Hodson RE (1986) Microbial utilization of dissolved organic matter from leaves of the red mangrove, Rhizophora mangle, in the Fresh Creek Estuary, Bahamas. Est Coast Shelf Sci 23: 607-619
10. Berner RA (1984) Sedimentary pyrite formation: An update. Geochimica Cosmochimica Acta 48: 605-615
11. Björk M, Weil A, Semesi S and Beer S (1997) Photosynthetic utilization of inorganic carbon by seagrasses from Zanzibar, East Africa. Mar Biol 129: 363-366
12. Blaabjerg V and Finster K (1998) Sulphate reduction associated with roots and rhizomes of the marine macrophyte Zostera marina. Aquat Microb Ecol 15: 311-314
13. Blaabjerg V, Mouritsen KM and Finster K (1998) Diel cycles of sulphate reduction rates in sediments of a Zostera marina bed (Denmark). Aquat Microb Ecol 15: 97-102
14. Blackburn TH, Nedwell DB and Wiebe WJ (1994) Active mineral cycling in a Jamaican seagrass sediment. Mar Ecol Prog Ser 110: 233-239
15. Borum J and Sand-Jensen K (1996) Is total primary productivity in shallow coastal waters stimulated by nitrogen loading? Oikos 76: 406-410
16. Boschker HTS, Wielemaker A, Schaub BEM and Holmer M (2000) Limited coupling of macrophyte production and bacterial carbon cycling in the sediments of Zostera meadows. Mar Ecol Prog Ser 203: 181-189
17. Bosence D (1989) Carbonate production in Florida Bay. Bull Mar Sci 44: 419-433
18. Boström C and Bonsdorff E (2000) Zoobenthic community establishment and habitat complexity-The importance of seagrass shoot-density, morphology and physical disturbance for faunal recruitment. Mar Ecol Prog Ser 205: 123-138
19. Brun FG, Vergara JJ, Navarro G, Hernández I and Perez-Llorens JL (2003) Effect of shading by ulva rigida canopies on growth and carbon balance of the seagrass Zostera noltii. Mar Ecol Prog Ser 265: 85-96
20. BrylinskyM(1977) Release of dissolved organic matter by some marine macrophytes. Mar Biol 39: 213-220
21. Burdige DJ and Zimmerman RC (2002) Impact of sea grass density on carbonate dissolution in Bahamian sediments. Limnol Oceanogr 47: 1751-1763
22. Buss LWand Jakson JBC (1981) Planktonic food availability and suspension-feeder abundance: Evidence of in situ depletion. J Exp Mar Biol Ecol 49: 151-161
23. Buzzelli CP,Wetzel RL andMeyersMB(1999)Alinked physical and biological framework to assess biogeochemical dynamics in a shallowestuarine system. Est Coast Shelf Sci 49: 829-851
24. Caffrey JM and Kemp WM (1990) Nitrogen cycling in sediments with estuarine populations of Potamogeton perfoliatus and Zostera marina. Mar Ecol Prog Ser 66: 147-160
25. CanalsM and Ballesteros E (1997) Production of carbonate particles by phytobenthic communities on the Mallorca-Menorca shelf, northwestern Mediterranean Sea. Deep-Sea Res II 44: 611-629
26. Canfield DE, Thamdrup B and Hansen JW (1993) The anaerobic degradation of organic-matter in Danish coastal sedimentsiron reduction, manganese reduction, and sulfate reduction. Geochimica et Cosmochimica Acta 57: 3867-3883
27. Carlson PR Jr, Yarbro LA and Barber TR (1994) Relationship of sediment sulfide to mortality of Thalassia Testudinum in Florida Bay. Bull Mar Sci 54: 733-746
28. Cebrian J, Marbà N and Duarte CM (1994) Estimating leaf age of the seagrass Posidonia oceanica (L.) Delile using the plastochrone interval index. Aquat Bot 49: 59-65
29. Cebrián J, Pedersen MF, Kroeger KD and Valiela I (2000) Fate of production of the seagrass Cymodocea nodosa in different stages of meadowformation. Mar Ecol Prog Ser 204: 119-130
30. Chambers RM, Fourqurean JW, Macko SA and Hoppenot R (2001) Biogeochemical effects of iron availability on primary producers in a shallow marine carbonate environment. Limnol Oceanogr 46: 1278-1286
31. Christensen KK, Jensen HS, Andersen FO, Wigand C and HolmerM(1998) Interferences between root plaque formation and phosphorus availability for isoetids in sediments of oligotrophic lakes. Biogeochemistry 43: 107-128
32. Connell EL, Colmer TD and Walker DI (1999) Radial oxygen loss from intact roots of Halophila ovealis as a function of distance behind the root tip and shoot illumination. Aquat Bot 63: 219-228
33. Danovaro R (1996) Detritus-Bacteria-Meiofauna interactions in a seagrass bed (Posidonia oceanica) of theNWMediterranian. Mar Biol 127: 1-13
34. Danovaro R and Fabiano M (1995) Seasonal and inter-annual variation of bacteria in a seagrass bed of the Mediterranean Sea: Relationship with labile organic compounds and other environmental factors. Aquat Microb Ecol 9: 17-26
35. D'Avanzo C, Kremer JN and Wainright SC (1996) Ecosystem production and respiration in response to eutrophication in shallow temperate estuaries. Mar Ecol Prog Ser 141: 263-274
36. Delgado O, Ruiz J, Pérez M, Romero J and Ballesteros E (1999) Effects of fish farming on seagrass (Posidonia oceanica) in a Mediterranean bay: Seagrass decline after organic loading cessation. Oceanologia Acta 22: 109-117
37. Donnelly AP and Herbert RA (1999) Bacterial interactions in the rhizosphere of seagrass communities in shallow coastal lagoons. J Appl Microbiol Symp Suppl 85: 151S-160S
38. Duarte CM (1990) Seagrass nutrient content. Mar Ecol Prog Ser 67: 201-207
39. Duarte CM (1995) Submerged aquatic vegetation in relation to different nutrient regimes. Ophelia 41: 87-112
40. Duarte CM and Agustí S (1998) The CO2 balance of unproductive aquatic ecosystems. Science 281: 234-236
41. Duarte CM, Agustí S, Cole JJ and del Giorgio PA (1999) Is the oligotrophic ocean heterotrophic? Science 284: 1735b.
42. Duarte CM and Chiscano CL (1999) Seagrass biomass and production: A reassessment. Aquat Bot 65: 159-174
43. Duarte CM, Merino M, Agawin NSR, Uri J, FortesMD, Gallegos ME, MarbàNand HemmingaMA(1998) Root production and belowground seagrass biomass. Mar Ecol Prog Ser 171: 97-108
44. Duarte CM, Merino M and Gallegos M (1995) Evidence of iron deficiency in seagrasses growing above carbonate sediments. Limnol Oceanogr 40: 1153-1158
45. Duggins DO, Eckman JE and Sewell AT (1990) Ecology of understory kelp environments. 2. Effects of kelps on recruitment of benthic invertebrates. J Exp Mar Biol Ecol 143: 27-45
46. Eldridge PM and Morse JW (2000) A diagenetic model for sediment-seagrass interactions. Mar Chem 70: 89-103
47. Enriquez S, Marbà M, Duarte CM, van Tussenbroek BI and Reyes-Zavala G (2001) Effects of Thalassia testudinum on sediment redox. Mar Ecol Prog Ser 219: 149-158
48. Erftemeijer PLA and Middelburg JJ (1993) Sediment-nutrient interactions in tropical seagrass beds:Acomparison between a terrigenous and a carbonate sedimentary environment in South Sulawesi (Indonesia). Mar Ecol Prog Ser 102: 187-198
49. ErskineJMandKochMS(2000) Sulfide effects on Thalassia testudinum carbon balance and adenylate energy charge. Aquat Bot 67: 275-285
50. Fabiano M, Danovaro R and Fraschetti S (1995) A 3-year time-series of elemental and biochemical-composition of organic-matter in subtidal sandy sediments of the ligurian sea (Northwestern Mediterranean). Continental Shelf Res 15: 1453-1469
51. Fenchel T, KingGM and BlackburnTH(1998) Bacterial Biogeochemistry. The Ecophysiology of Mineral Cycling. Academic Press, San Diego, California
52. Findlay S, Carlough L, Crocker MT, Gill HK, Meyer JL and Smith PJ (1986) Bacterial growth on macrophyte leachate and fate of bacterial production. Limnol Oceanogr 31: 1335-1341
53. Fourquerean JW and Zieman JC (2002) Nutrient content of the seagrass Thalassia testudinum reveals regional patterns of relative availability of nitrogen and phosphorus in the Florida Keys USA. Biogeochemistry 61: 229-245
54. Frankignoulle M, Bouquegneau JM, Ernst E, Biondo R, RigoM and Bay D (1984) Contribution de l'activité de l'herbier de posidonies au metabolisme global de la Baie de Calvi. Premiers resultats. In: Boudouresque CF, Jeudy de Grissac A and Olivier J (eds) International Workshop Posidonia oceanica Beds, pp 277-282. GIS Posidonie publ.
55. Frankovich TA and Zieman JC (1994) Total epiphyte and epiphytic carbonate production on Thalassia testudinum across Florida bay. Bull Mar Sci 54: 679-695
56. Gacia E and DuarteCM(2001) Sediment retention by a Mediterranean Posidonia oceanica meadow: The balance between deposition and resuspension. Est Coast Shelf Sci 52: 505-514
57. Gacia E, Duarte CM, Marbà N, Terrados J, Kennedy H, Fortes MD and Nguyen Huang T (2003) Sediment deposition and production in SE-Asia seagrass meadows. Est Coast Shelf Sci 56: 1-11
58. Gacia E, DuarteCM and Middelburg JJ (2002) Carbon and nutrient deposition in a Mediterranean seagrass (Posidonia oceanica) meadow. Limnol Oceanogr 47: 23-32
59. Gacia E, Granata TC and Duarte CM (1999) An approach to the measurement of particle flux and sediment retention within seagrass (Posidonia oceanica) meadows. Aquat Bot 65: 255-269
60. Gacia E,Kennedy H, Duarte CM, Marbà N, Terrados J, Papadimitriou S and Fortes MD The light compensation point for the community metabolism of a highly productive Philippine seagrass meadow. J Exp Mar Biol Ecol (submitted)
61. Greve TM, Borum J and PedersenO(2003) Meristematic oxygen variability in eelgrass (Zostera marina). Limnol Oceanogr. 48: 210-216
62. Gribsholt B, Kostka JE and Kristensen E (2003) Impact of fiddler crabs and plant roots on sediment biogeochemistry in a Georgia salt marsh. Mar Ecol Prog Ser 259: 237-251
63. Hansen JW, Udy JW, DennisonWCand Lomstein BA (2000) Effect of the seagrass Zostera capricorni on sediment microbial processes. Mar Ecol Prog Ser 199: 83-96
64. Heijs FML (1984) Annual biomass and production of epiphytes in three monospeciphic seagrass communities of Thalassia hemprichii (Ehrenb.) Ashers. Aquat Bot 20: 195-218
65. Heijs SK, Azzoni R, Giordani G, Jonkers HM, Nizzoli D, Viaroli P and Gemerden vanH(2000) Sulfide-induced release of phosphate from sediments of coastal lagoons and the possible relation to the disappearance of Ruppia sp. Aquat Microb Ecol 23: 85-95
66. Hemminga M and Duarte CM (2000) Seagrass Ecology. Cambridge University Press, Cambridge 298 pp
67. Hemminga MA, Harrison PG and van Lent F (1991) The balance of nutrient losses and gains in seagrass meadows. Mar Ecol Prog Ser 71: 85-96
68. Hemminga MA, Slim FJ, Kazungu J, Ganssen GM, Nieuwenhuize J and Kruyt NM (1994) Carbon outwelling from a mangrove forest with adjacent seagrass beds and coral reefs (Gazy Bay, Kenya). Mar Ecol Prog Ser 106: 291-301
69. Hemminga MA and Nieuwenhuize J (1990) Seagrass wrackinduced dune formation on a tropical coast (Banc d'Arguin, Mauritania). Est Coast Shelf Sci 31: 499-502
70. Herzka SZ and Dunton KH (1997) Seasonal photosynthetic patterns of the seagrass Thalassia testudinum in the western Gulf of Mexico. Mar Ecol Prog Ser 152: 103-117
71. Holmer M, Andersen F, Holmboe N, Kristensen E and Thongtham N (1999) Transformation and exchange processes in the Bangrong mangrove forest-seagrass bed system, Thailand. Seasonal and spatial variations in benthic metabolism and sulfur biogeochemistry. Aquat Microb Ecol 20: 203-212
72. Holmer M, Andersen F, Nielsen SL and Henricus TSB (2001) The importance of mineralization based on sulfate reduction for nutrient regeneration in tropical seagrass sediments. Aquat Bot 71: 1-17
73. HolmerM and Bondgaard EJ (2001) Photosynthetic and growth response of eelgrass to low oxygen and high sulfide concentrations during hypoxic events. Aquat Bot 70: 29-38
74. Holmer M, Duarte CM, Boschker HTS and Barrón C (2004) Carbon cycling and bacterial carbon sources in pristine and impacted Mediterranean seagrass sediments. Aquat Microb Ecol 36: 227-237
75. Holmer M, Duarte CM and Marbà N (2005) Sulfur cycling and seagrass (Posidonia oceanica) status in carbonate sediments. Biogeochemistry 66: 223-239
76. Holmer M, Duarte CM and Marbà N (2005) Iron additions improve seagrass growth on impacted carbonate sediments. Ecosystems (in press)
77. Holmer M and Laursen L (2002) Effect of shading of Zostera marina (eelgrass) on sulfur cycling in sediments with contrasting organic matter and sulfide pools. J Exp Mar Biol Ecol 270: 25-37
78. Holmer M and Nielsen SL (1997) Sediment sulfur dynamics related to biomass-density patterns in Zostera marina (eelgrass) beds. Mar Ecol Prog Ser 146: 163-171
79. Iizumi H, Hattori A and McRoy CP (1980) Nitrate and nitrite in interstil waters of eelgrass beds in relation to rhizosphere. J exp mar Biol Ecol 47: 191-201
80. InversO, Romero J and PerezM(1997) Effects of pH on seagrass photosynthesis: A laboratory and field assessment. Aquat Bot 59: 185-194
81. Invers O, Zimmerman RC, Alberte RS, Perez M and Romero J (2001) Inorganic carbon sources for seagrass photosynthesis: An experimental evaluation of bicarbonate use in species inhabiting temperate waters. J Exp Mar Biol Ecol 265: 203-217
82. Isaksen MF and Finster K (1996) Sulphate reduction in the root zone of the seagrass Zostera noltii on the intertidal flats of a coastal lagoon (Arcachon, France). Mar Ecol Prog Ser 137: 187-194
83. James PL and Larkum AWD (1996) Photosynthetic Ci acquisition of Posidonia australis. Aquat Bot 55: 149-157
84. Jensen S and Bell S (2001) Seagrass growth and patch dynamics: Cross-scale morphological plasticity. Plant Ecol 155: 201-217
85. Jensen SL, McGlathery KJ, Marino R and Howarth RW (1998) Forms and availability of sediment phosphorus in carbonate sand of Bermuda seagrass beds. Limnol Oceanogr 43: 799-810
86. Jensen HS, Mortensen PB, Andersen FO, Rasmussen E and Jensen A (1995) P hosphorus cycling in a coastal marine sediment, Aarhus Bay, Denmark. Limnol Oceanogr 40: 908-917
87. Jones BW, Cifuentes LA and Kaldy JE (2003) Stable carbon isotope evidence for coupling between sedimentary bacteria and seagrasses in a sub-tropical lagoon. Mar Ecol Prog Ser 255: 15-25
88. Jones CG, Lawton JH and Shachak M (1997) Positive and negative effects of organisms as physical ecosystem engineers. Ecology 78: 1946-1957
89. Jørgensen BB (1982) Mineralization of organic matter in the sea bed-The role of sulphate reduction. Nature 296: 643-645
90. Kamp-Nielsen L, Vermaat JE,Wesseling I, Borum J and Geertz-Hansen O (2002) Sediment properties along gradients of siltation in South-East Asia. Est Coast Shelf Sci 54: 127-137
91. Kemp WM, Twilley RR, Stevenson JC, Boynton WR and Means JC (1983) The decline of submerged vascular plants in upper Chesapeake Bay: Summary of results concerning possible causes. Mar Technol Soc J 17: 78-89
92. Kennedy H, Gacia E,Kennedy P, Papadimitriou S and DuarteCM (2004) Organic carbon sources to SE Asian coastal sediments. Est Coast Shelf Sci 60: 59-68
93. Kirkman H and Kendrick GA(1997) Ecological significance and commercial harvesting of drifting and beach-cast macro-algae and seagrasses in Australia: A review. J Appl Phycol 9: 311-326
94. Küsel K, Pinkart HC, Drake HL and Devereux R (1999) Acetogenic and sulfate-reducing bacteria inhabiting the rhizoplane and deep cortex cells of the sea grass Halodule wrightii. Appl Environ Microbiol 65: 5117-5123
95. Land LS (1970) Carbonate mud: Production by epibiont growth on Thalassia testudium. J Sediment Petrol 40: 1361-1363
96. Lee K and Dunton KH (2000) Diurnal changes in pore water sulfide concentrations in the seagrass Thalassia testudinum beds: The effects of seagrasses on sulfide dynamics. J Exp Mar Biol Ecol 255: 201-214
97. Lemmens JWTJ, Clapin G, Lavery P and Cary J 1996 Filtering capacity of seagrass meadows and other habitats of Cockburn Sound, Western Australia. Mar Ecol Prog Ser 143: 187-200
98. Marbà N and Duarte CM (2001) Growth and sediment space occupation by seagrass (Cymodocea nodosa) roots. Mar Ecol Prog Ser 224: 291-298
99. MateoMA,Romero J, Pérez M, LittlerMM and LittlerDS(1997) Dynamics of millenary organic deposits resulting from growth of the Mediterranean seagrass Posidonia oceanica. Est Coast Shelf Sci 44: 103-110
100. McGlathery KJ, Risgaard-PetersenNand Christensen PB (1998) Temporal and spatial variation in nitrogen fixation the eelgrass Zostera marina. Mar Ecol Prog Ser 168: 245-258
101. McGlathery KJ, Berg P and Marino R (2001) Using porewater profiles to assess nutrient availability in seagrass-vegetated carbonate sediments. Biogeochemistry 56: 239-263
102. Moriarty DJW, Iverson RL and Pollard PC (1986) Exudation of organic carbon by the seagrass Halodule wrightii Aschers and its effects on bacterial growth in the sediment. J Exper Mar Biol Ecol 96: 115-126
103. Moriarty DJW and O'Donohue MJ (1993) Nitrogen-fixation in seagrass communities during summer in the Gulf of Carpentaria, Australia. Australian J Mar Freshwater Res 44: 117-125
104. Morse JW, Zullig JJ, Bernstein LD, Millero FJ, Milne P, Mucci A and Choppin GR (1985) Chemistry of calcium carbonate shallow water sediments in the Bahamas. Am J Sci 285: 147-285
105. Nelsen JE and Ginsburg RN (1986) Calcium carbonate production by epibionts on Thalassia in Florida Bay. J Sediment Petrol 56: 622-628
106. Nielsen LB, Finster K, Welsh DT, Donelly A, Herbert RA, Wit R and Lomstein BA (2001) Sulphate reduction and nitrogen fixation rates associated with roots, rhizomes and sediments from Zostera noltii and Spartina maritima meadows. Environ Microbiol 3: 63-71
107. Odonohue MJ, Moriarty DJW and Macrae IC (1991) A comparison of methods for determining rates of acetylene-reduction (nitrogen-fixation) by heterotrophic bacteria in seagrass sediment. J Microbiol Methods 13: 171-183
108. Ottosen LDM, Risgaard-Petersen N and Nielsen LP (1999) Direct and indirect measurements of nitrification and denitrification in the rhizosphere of aquatic macrophytes Aquat Microb Ecol 19: 81-91
109. Oviatt CA, Rudnick DT, Keller AA, Sampow PA and Almquist GT (1986) A comparison of system (O2 and CO2) and 14C measurements of metabolism in estuarine mesocosms. Mar Ecol Prog Ser 28: 57-67
110. Patriquin DG (1972) Carbonate mud production by epibionts on Thalassia: An estimate based on leaf growth rate data. J Sediment Petrol 42: 687-689
111. Pedersen AU, Berntsen J and Lomstein BA (1999) The effect of eelgrass decomposition on sediment carbon and nitrogen cycling: A controlled laboratory experiment. Limnol Oceanogr 44: 1978-1992
112. Pedersen MF and Borum J (1992) Nitrogen dynamics of eelgrass Zostera marina during a late summer period of high growth and low nutrient availability. Mar Ecol Prog Ser 80: 65-73
113. Pedersen MF, Duarte CM and Cebrián J (1997) Rates of changes in organic matter and nutrient stocks during seagrass Cymodocea nodosa colonization and stand development. Mar Ecol Prog Ser 159: 29-36
114. Pedersen O, Borum J, DuarteCM and FortesMD(1998) Oxygen dynamics in the rhizosphere of Cycomocea rotundata. Mar Ecol Prog Ser 169: 283-288
115. Penhale PA and Smith WOJ (1977) Excretion of dissolved organic carbon by eelgrass. Limnol Oceanogr 22: 400-407
116. Perez M, Mateo MA, Alcoverro T and Romero J (2001) Variability in detritus stocks in beds of the seagrass Cymodocea nodosa. Bot Mar 44: 523-531
117. Peterson BJ and Heck KL Jr (2001) Positive interactions between suspension-feeding bivalves and seagrass-A facultative mutualism. Mar Ecol Prog Ser 213: 143-155
118. Peterson CH, Summerson HC and Duncan PB (1984) The influence of seagrass cover on population structure and individual growth rate of a suspension-feeding bivalve, Mercenaria mercenaria. J Mar Res 42: 123-138
119. Pollard PC and Moriarty DJW (1991) Organic carbon decomposition, primary and bacterial productivity, and sulphate reduction, in tropical seagrass beds of the Gulf of Carpentaria, Australia. Mar Ecol Prog Ser 69: 149-159
120. Roberts DG and Moriarty DJW (1987) Lacunal gas discharge as a measure of productivity in the seagrasses Zostera capricorni, Cymodocea serrulata and Syringodium isoetifolium. Aquat Bot 28: 143-160
121. Robertson ML, Mills AL and Zieman JC (1982) Microbial synthesis of detritus-like particulates from dissolved organic carbon released by tropical seagrasses. Mar Ecol prog ser 7: 279-285
122. Romero J. (1986) Estudio ecológico de las fanerógamas marinas de la costa catalana: Producción primaria de Posidonia oceanica en las islas Medas. PhD thesis, University of Barcelona
123. Romero J. (1988) Epífitos de las hojas de Posidonia oceanica: Variaciones estacionales y batimétricas de biomasa en la pradera de las islas Medes (Girona). Oecologia Aquatica 9: 19-25
124. Romero J, Pergent G, Pergent-Martini C, Mateo MA and Regnier C (1992) The detritic compartment in a Posidonia oceanica meadow: Litter features, decomposition rates and mineral stocks. Mar Ecol 13: 69-83
125. Risgaard-Petersen N and Ottosen LDM (2000) Nitrogen cycling in two temperate Zostera marina beds: Seasonal variation. Mar Ecol Prog Ser 198: 93-107
126. Rysgaard S, Risgaard-Petersen N and Sloth NP (1996) Nitrification, denitrification and nitrate ammonification in sediments of two coastal lagoons on Southern France. Hydrobiologia 329: 133-141
127. Rysgaard S, Thamdrup B, Risgaard-Petersen N, Fossing H, Berg P, Christensen PB and Dalsgaard T (1998) Seasonal carbon and nutrient mineralization in a high-Arctic coastal marine sediment, Young Sound, Northeast Greenland. Mar Ecol Prog Ser 175: 261-276
128. Schimel J and Bennett J (2004) Nitrogen mineralization: Challenges of a changing paradigm. Ecology 85: 591-602
129. ShiehWYand Yang JT (1997) Denitrification in the rhizosphere of the two seagrasses Thalassia hemprichii (Ehrenb.) Aschers and Halodule uninervis (Forsk.) Aschers. J Exp Mar Biol Ecol 218: 229-241
130. Shum KT and Sundby B (1996) Organic matter processing in continental shelf sediments-The subtidal pump revisited. Mar Chem 53: 81-87
131. Smith WOJ and Penhale PA (1980) The heterotrophic uptake of dissolved organic carbon by eelgrass (Zostera mariana L.) and its epiphytes. J Exp Mar Biol Ecol 48: 233-242
132. Smith RD, Pregnall AM and Alberte RS (1988) Effects of anaerobiosis on root metabolism of Zostera marina (eelgrass): Implications for survival in reducing sediments. Mar Biol 98: 131-141
133. Swarz AM, Björk M, Buluda T, Mtolera M and Beer S (2000) Photosynthetic utilisation of carbon and light by two tropical seagrass species as measured in situ. Mar Biol 137: 755-761
134. Terrados J, Duarte CM, Kamp-Nielsen L, Agawin NSR, Gacia E, Lacap D, Fortes MD, Borum J, Lubanski M and Greve T (1999) Are seagrass growth and survival constrained by the reducing conditions of the sediment? Aquat Bot 65: 175-197
135. Thamdrup B (2000) Bacterial manganese and iron reduction in aquatic sediments. In: Schink B (ed) Advances in Microbial Ecology, pp 41-84. Kluwer Academic/Plenum Publishers, New York
136. Thode-Andersen A and Jørgensen BB (1989) Sulfate reduction and the formation of 35S-labeled FeS, FeS2 and S0 in coastal marine sediments. Limnol Oceanogr 34: 793-806
137. Udy JW, Dennison WC, Long WJL and McKenzie LJ (1999) R esponses of seagrass to nutrients in the great barrier reef, Australia. Mar Ecol Prog Ser 185: 257-271
138. Velimirov B (1986) DOC dynamics in a Mediterranean seagrass system. Mar Ecol prog ser 28: 21-41
139. Vichkovitten T and Holmer M (2004) Contribution of plant carbohydrates to sedimentary carbon mineralization. Org Geochem 35: 1053-1066
140. Walker DI and Woelkerling WJ (1988) Quantitative study of sediment contribution by epiphytic coralline red algae in seagrass meadows in Shark Bay,Western Australia. Mar Ecol Prog Ser 43: 71-77
141. Welsh DT (2000) Nitrogen fixation in sea grass meadows: Regulation, plant-bacteria interactions and significance to primary productivity. Ecol Lett 3: 58-71
142. Welsh DT, Bartoli M, Nizzoli D, Castaldelli G, Riou SA and Viaroli P (2000) Denitrification, nitrogen fixation, community primary productivity and inorganic-N and oxygen fluxes in an intertidal Zostera noltii meadow. Mar Ecol Prog Ser 208: 65-77
143. Welsh DT, Wellsbury P, Bourguès S, Wit R and Herbert RA (1996) Relationship between porewaterorganic carbon content, sulphate reduction and nitrogen fixation (acetylene reduction) in the rhizosphere of Zostera noltii. Hydroboilogia 329: 175-183
144. Wetzel RG and Pénale PA (1979) Transport of carbon and excretion of dissolved organic carbon by leaves and roots/rhizomes in seagrasses and their epiphytes. Aquat Bot 6: 149-158
145. Wit R, Stal LJ, Lomstein BA, Herbert RA, Gemerden H, Viaroli P, Cecherelli V, Rodríguez-Valera F, Bartoli M, Giordani G, Azzoni R, Schaub B, Welsh DT, Donelly A, Cifuentes A, Antón J, Finster K, Nielsen LB, Pedersen AU, Neubauer AT, Colangelo MA and Heijs SK (2001) ROBUST: The role of buffering capacities in stabilising coastal lagoon ecosystems. Continental Shelf Res 21: 2021-2041
146. Ziegler S and Benner R (1998) Ecosystem metabolism in a subtropical, seagrass-dominated lagoon. Mar Ecol Prog Ser 173: 1-12
147. Ziegler S and BennerR(1999a) Dissolved organic carbon cycling in a subtropical seagrass-dominated lagoon. Mar Ecol Prog Ser 180: 149-160
148. Ziegler S and Benner R (1999b) Nutrient cycling in the water column of a subtropical seagrass meadow. Mar Ecol Prog Ser 188: 51-62
149. Zieman JC and Wetzel RG (1980) Productivity in seagrasses: Methods and rates. In: Handbook of Seagrass Biology: An Ecosystem Perspective, ISBN 0-8240-7025-9