Significance of predation by protists in aquatic microbial food webs

Antonie van Leeuwenhoek, International Journal of General and Molecular Microbiology

Volumn 81, Issue 1-4, 2002, Pages 293-308

  Sherr, Evelyn B ^a   Sherr, Barry F ^a  

^a OREGON STATE UNIVERSITY   (United States)

Author keywords

Bacterivory; Herbivory; Microbial food webs; Pelagic ecosystems; Phagotrophy; Protists

Indexed keywords

IRON; TRACE METAL;

AQUATIC ECOSYSTEM; FOOD WEB; MICROBIAL ECOLOGY; PHAGOTROPHY; PREDATION; PROTIST;

AQUATIC ENVIRONMENT; ARTICLE; AUTOTROPHY; BACTERIUM; CILIATE; CONTROLLED STUDY; DINOFLAGELLATE; FEEDING BEHAVIOR; FLAGELLATE; FLOW CYTOMETRY; FOOD WEB; GENETIC ANALYSIS; GENETIC VARIABILITY; HERBIVORY; HETEROTROPHY; MEDICAL RESEARCH; MICROBIAL METABOLISM; MICROORGANISM; MIXOTROPHY; MOLECULAR GENETICS; MORTALITY; NONHUMAN; NUTRIENT; PELAGIC ZONE; PHAGOTROPHY; PHYTOPLANKTON; POPULATION GROWTH; PREDATION; PREDATOR PREY INTERACTION; PRIORITY JOURNAL; PROTISTA; ZOOPLANKTON;

ANIMALS; ECOSYSTEM; FEEDING BEHAVIOR; FOOD CHAIN; PREDATORY BEHAVIOR; PROTOZOA; WATER; WATER MICROBIOLOGY;

BACTERIA (MICROORGANISMS); CILIOPHORA; DINOPHYCEAE; MASTIGOPHORA (FLAGELLATES); PROTISTA; PROTOZOA;

EID: 0036422782     PISSN: 00036072     EISSN: None     Source Type: Journal    
DOI: 10.1023/A:1020591307260     Document Type: Article

References (208)

1. Archer SD, Leakey RJG, Burkill PH, Sleigh MA & Appleby CJ (1996a) Microbial ecology of sea ice at a coastal Antarctic site: community composition, biomass and temporal change. Mar. Ecol. Prog. Ser. 135: 179-195.
2. Archer SD, Leakey RJG, Burkill PH & Sleigh MA (1996b) Microbial dynamics in coastal waters of east Antarctica: herbivory by heterotrophic dinoflagellates. Mar. Ecol. Prog. Ser. 139: 239-255.
3. Archer, SD, Verity PG & Stefels J (2000) Impact of microzooplankton on the progression and fate of the spring bloom in fjords of northern Norway. Aquat. Microb. Ecol. 22: 27-41.
4. Arenovski AL, Lim EL & Caron DA (1995) Mixotrophic nanoplankton in oligotrophic surface waters of the Sargasso Sea may employ phagotrophy to obtain major nutrients. J. Plankton Res. 17: 801-820.
5. Azam F, Fenchel T, Field JG, Meyer-Reil RA & Thingstad F (1983) The ecological role of water column microbes in the sea. Mar. Ecol. Prog. Ser. 10: 257-263.
6. Barbeau K, Moffett JW, Caron DA, Croot PL & Erdner DL (1996) Role of protozoan grazing in relieving iron limitation of phytoplankton. Nature 380: 61-64.
7. Barbeau K, Kujawinski EB & Moffett JW (2001) Remineralization and recycling of iron, thorium and organic carbon by heterotrophic marine protists in culture. Aquat. Microb. Ecol. 24: 69-81.
8. Beja O, Aravind L, Koonin EV, Suzuki MT, Hadd A, Nguyen LP, Jovanovich S, Gates CM, Feldman RA, Spudlich JL, Spudlich EN & DeLong EF (2000) Bacterial rhodopsin: evidence for a new type of phototrophy in the sea. Science 289: 1902-1906.
9. Beja O, Spudlich EN, Spudlich JL, Leclerc M & DeLong EF (2001) Proteorhodopsin phototrophy in the ocean. Nature 411: 786-789.
10. Bernard C, Simpson AGB & Patterson DJ (2000) Some free-living flagellates (Protista) from anoxic habitats. Ophelia 52: 113-114.
11. Baretta-Bekker JG, Baretta JW & Rasmussen EK (1995) The microbial food web in the European Regional Seas Ecosystem Model. Neth. J. Sea Res. 33: 363-395.
12. Blanchot J, Andre J-M, Navarette C, Neveus J & Radenac M-H (2001) Picophytoplankton in the equatorial Pacific: vertical distributions in the warm pool and in the high nutrient low chlorophyll conditions. Deep-Sea Res. 48: 297-314.
13. Bockstahler KR & Coats DW (1993) Grazing of the mixotrophic dinoflagellate Gymnodinium sanguineum on ciliate populations of Chesapeake Bay. Mar. Biol. 116: 477-487.
14. Boenigk J (2000) Feeding mechanisms and the significance of food selection in heterotrophic nanoflagellates. University of Cologne (Germany), 133 pp.
15. Boyd PW & Harrison PJ (1999) Canadian JGOFS in the NE Subarctic Pacific. Deep Sea Res. Part II. Top. Stud. Oceanogr. 46(11-12).
16. Boyd PW, Whitney FA, Harrison PJ & Wong CS (1995) The NE subarctic Pacific in winter: ii. Biological rate processes. Mar. Ecol. Prog. Ser. 128: 11-24.
17. Brandt SM & Sleigh MA (2000) The quantitative occurrence of different taxa of heterotrophic flagellates in Southhampton Water, U.K. Estuar. Coast. Shelf Sci. 51: 91-102.
18. Buck KR, Nielsen TG, Hansen BW, Gastrup-Hansen D & Thomsen HA (1998) Infiltration phyto- and protozooplankton assemblages in the annual sea ice of Disko Island, West Greenland, spring 1996. Polar Biol. 20: 377-381.
19. Buck KR, Barry JP & Simpson AGB (2000) Monterey Bay cold seep biota: Euglenozoa with chemoautrophic bacterial epibionts. Eur. J. Protistol. 36: 117-126.
20. Burkill PH (Ed) (1999) ARABESQUE: UK JGOFS Process Study in the Arabian Sea. Deep Sea Res. Part II. Top. Stud. Oceanogr. 46(3-4).
21. Burkill PH, Edwards ES & Sleigh MA (1995) Microzooplankton and their role in controlling phytoplankton growth in the marginal ice zone of the Bellingshausen Sea. Deep-Sea Res. 42: 1277-1290.
22. Calbet A (2001) Mesozooplankton grazing effect on primary production: a global comparative analysis in marine ecosystems. Limnol. Oceanogr. 46: 1824-1830.
23. Calbet A & Landry MR (1999) Mesozooplankton influences on the microbial food web: direct and indirect trophic interactions in the oligotrophic open ocean. Limnol. Oceanogr. 44: 1370-1380.
24. Campbell L, Nolla HA & Vaulot D (1994) The importance of Prochlorococcus to community structure in the central North Pacific Ocean. Limnol. Oceanogr. 39: 954-961.
25. Capriulo GM (1990) Feeding-related ecology of marine protozoa. In Capriulo GM (Ed) Ecology of Marine Protozoa (pp 186-259). Oxford University Press, New York.
26. Caron DA (2000) Symbiosis and mixotrophy among pelagic microorganisms. In Kirchman DL (Ed) Microbial Ecology of the Oceans (pp 495-523). Wiley-Liss, New York.
27. Caron DA & Goldman JC (1990) Protozoan nutrient regeneration. In Capriulo GM (Ed) Ecology of Marine Protozoa (pp 283-306). Oxford University Press, New York.
28. Caron DA, Lim EL, Kunze H, Cosper EM & Anderson DM (1989) Trophic interactions between nano- and microzooplankton and the 'brown tide'. In Cosper EM, Bricelj VM & Carpenter EJ (Eds) Novel Phytoplankton Blooms (pp 265-294). Springer, Berlin.
29. Caron DA, Lim EL, Dennett MR, Gast RJ & DeLong EF (1999) Molecular phylogenetic analysis of the heterotrophic chrysophyte genus Paraphysomonas (Chrysophyceae), and the design of rRNA targeted oligonucleotide probes for two species. J. Phycol. 35: 824-837.
30. Caron DA, Dennett MR, Lonsdale DJ, Moran DM & Shalapyonok L (2000) Microzooplankton herbivory in the Ross Sea, Antarctica. Deep-Sea Res. Part II 47: 3249-3272.
31. Chase Z & Price NM (1997) Metabolic consequences of iron deficiency in heterotrophic marine protozoa. Limnol. Oceanogr. 42: 1673-1684.
32. Cole JJ, Findlay S & Pace ML (1988) Bacterial production in fresh and salt water ecosystems: a cross system overview. Mar. Ecol. Prog. Ser. 43: 1-10.
33. Christaki U, Van Wambeke F & Dolan JR (1999) Nanoflagellates (mixotrophs, heterotrophs, and autotrophs) in the oligotrophic eastern Mediterranean: standing stocks, bacterivory and relationships with bacterial production. Mar. Ecol. Prog. Ser. 181: 297-307.
34. del Giorgio PA, Gasol JM, Mura P, Vaque D & Duarte CM (1996) Protozoan control of the proportion of metabolically active bacteria in coastal marine plankton. Limnol. Oceanogr. 41: 1169-1179.
35. Diez B, Pedrós-Alió C & Massana R (2001a) Study of genetic diversity of eukaryotic picoplankton in different oceanic regions by small-subunit rRNA gene cloning and sequencing. Appl. Environ. Microbiol. 67: 2932-2941.
36. Diez B, Pedrós-Alió C, Marsh TL & Massana R (2001b) Application of denaturing gradient gel electrophoresis (DGGE) to study the diversity of marine picoeukaryotic assemblages and comparison of DGGE with other molecular techniques. Appl. Environ. Microbiol. 67: 2942-2951.
37. Dolan JR (1997) Phosphorus and ammonia excretion by planktonic protists. Mar. Geol. 139: 109-122.
38. Dolan JR, Gallegos CL & Miogis A (2000) Dilution effects on microzooplankton in dilution grazing experiments. Mar. Ecol. Prog. Ser. 200: 127-139.
39. Ducklow HW (1983) Production and the fate of bacteria in the oceans. Bioscience 33: 494-501.
40. Ducklow H (2000) Bacterial production and biomass in the oceans. In Kirchman DL (Ed) Microbial Ecology of the Oceans (pp 85-120). Wiley-Liss, New York.
41. Ducklow H, Purdie DA, Williams PJleB & Davies JM (1986) Bacterioplankton: a sink for carbon in a coastal marine plankton community. Science 232: 865-867.
42. Dupuy C, Le Gall S, Hartmann HJ & Beret M (1999) Retention of ciliates and flagellates by the oyster Crassostrea gigas in Frech Atlantic coastal ponds: protists as a trophic link between bacterioplankton and benthic suspension-feeders. Mar. Ecol. Prog. Ser. 177: 165-175.
43. Dyer BD & Obar RA (1994) Tracing the History of Eukaryotic Cells. Columbia University Press, New York, 259 pp.
44. Epstein SS (1997) Microbial food webs in marine sediments. I. Trophic interactions and grazing rates in two tidal flat communities. Microb. Ecol. 34: 188-198.
45. Fahnenstiel GL, McCormick MJ, Lang GA, Redalje DG, Lohrenz SE, Markowitz M, Wagoner B & Carrick HJ (1995) Taxon-specific growth and loss rates for dominant phytoplankton populations from the northern Gulf of Mexico. Mar. Ecol. Prog. Ser. 117: 229-239.
46. Fenchel T (1984) Suspended marine bacteria as a food source. In Fasham MJ (Ed), Energy and Materials in Marine Ecosystems, (pp 301-315). Plenum, New York.
47. Fenchel T (1987) Ecology of Protozoa: The Biology of Free-living Phagotrophic Protists. Science Tech./Springer, Berlin, 197 pp.
48. Fenchel T & Blackburn N (1999) Motile chemosensory behavior of phagotrophic protists: mechanisms for and efficiency in congregating at food patches. Protist 150: 325-336.
49. Ferrier-Pages C, Karner M & Rassoulzadegan F (1998) Release of dissolved amino acids by flagellates and ciliates grazing on bacteria. Oceanol. Acta 21: 485-494.
50. Fessenden L & Cowles TJ (1994) Copepod predation on phagotrophic ciliates in Oregon coastal waters. Mar. Ecol. Prog. Ser. 107: 103-111.
51. Finlay, B (2001) Protozoa. In: Encyclopedia of Biodiversity, Volume 4. (pp 901-915). Academic Press, New York.
52. Froneman PW & Balarin MG (1998) Structure and grazing impact of the protozooplankton community in the waters surrounding the Prince Edward Islands (Southern Ocean). Polar Biol. 20: 198-205.
53. Froneman P & Perissinotto R (1996) Microzooplankton grazing in the Southern Ocean: Implications for the carbon cycle. P.S.Z.N. I: Mar. Ecol. 17: 99-115.
54. Fukuda R, Ogawa H, Nagata T & Koike I (1998). Direct determination of carbon and nitrogen contents of natural bacterial assemblages in marine environments. Appl. Envir. Microbiol. 64: 3352-3358.
55. Gallegos CL (1989) Microzooplankton grazing on phytoplankton in the Rhode River, Maryland: nonlinear feeding kinetics. Mar. Ecol. Prog. Ser. 57: 23-33.
56. Gaul W, Antia AN & Koeve W (1999) Microzooplankton grazing and nitrogen supply of phytoplankton growth in the temperate and subtropical northeast Atlantic. Mar. Ecol. Prog. Ser. 189: 93-104.
57. Gifford DJ (1988) Impact of grazing by microzooplankton in the Northwest Arm of Halifax Harbour, Nova Scotia. Mar. Ecol. Prog. Ser. 47: 249-258.
58. Gooday AJ & Lambshead PDJ (1989) Influence of seasonally deposited phytodetritus on benthic foraminiferal populations in the bathyal northeast Atlantic: the species response. Mar. Ecol. Prog. Ser. 58: 53-67.
59. Gonzalez J & Suttle CA (1993) Grazing by marine nanoflagellates on viruses and virus-sized particles: ingestion and digestion. Mar. Ecol. Prog. Ser. 94: 1-10.
60. Gonzalez J, Sherr EB & Sherr BF (1990) Size-selective grazing on bacteria by natural assemblages of estuarine flagellates and ciliates. Appl. Environ. Microbiol. 56: 583-589.
61. Gonzalez J, Sherr EB & Sherr BF (1993a) Differential feeding by marine flagellates on growing vs starving bacteria, and on motile vs non-motile bacteria. Mar. Ecol. Prog. Ser. 102: 257-267.
62. Gonzalez J, Sherr BF & Sherr EB (1993b) Digestive enzyme activity as a quantitative measure of protistan grazing: the acid lysozyme assay for bacterivory. Mar. Ecol. Prog. Ser. 100: 197-206.
63. Gude H (1989) The role of grazing on bacteria in plankton succession, In: Sommer U (Ed) Plankton Ecology: Succession in Plankton Communities (pp 337-364). Brock/Springer, Berlin.
64. Guillou L, Moon-van der Staay SY, Claustre H, Partensky F & Vaulot D (1999a) Diversity and abundance of Bolidophyceae (Heterokonta) in two oceanic regions. Appl. Environ. Microbiol. 65: 4528-4536.
65. Guillou L, Chretiennot-Dinet M-J, Boulben S, Moon-van der Staay SY & Vaulot D (1999b) Symbiomonas scintillans gen. et sp. nov. and Picophagus flagellatus gen. et sp. nov. (Heterokonta): two new heterotrophic flagellates of picoplanktonic size. Protist 150: 383-398.
66. Hahn MW & Hofle MG (2001) Grazing of protozoa and its effect on populations of aquatic bacteria. FEMS Microbiol. Ecol. 35: 113-121.
67. Hall JA, Barrett DP & James MR (1993) The importance of phytoflagellate, heterotrophic flagellate and ciliate grazing on bacteria and picophytoplankton sized prey in a coastal marine environment. J. Plankton Res. 15: 1075-1086.
68. Hammer A, Gruttner C & Schumann R (1999) The effect of electrostatic charge of food particles on capture efficiency by Oxyrrhis marina Dujardin (dinoflagellate). Protist 150: 375-382.
69. Hansen PJ (1991) Quantitative importance and trophic role of heterotrophic dinoflagellates in a coastal pelagic food web. Mar. Ecol. Prog. Ser. 73: 253-261.
70. Hansen PJ (1998) Phagotrophic mechanisms and prey selection in mixotrophic flagellates. In: Anderson DM, Cembella AD & Hallegraeff GM (Eds) Physiological Ecology of Harmful Algal Blooms (pp 525-537). Springer, Berlin.
71. Havskum H & Hansen AS (1997) Importance of pigmented and colourless nano-sized protists as grazers on nanoplankton in a phosphate-depleted Norwegian fjord and in enclosures. Mar. Ecol. Prog. Ser. 12: 139-151.
72. Honedeveld BJM, Bak RPM & van Duyl FC (1992) Bacterivory by heterotrophic nanoflagellates in marine sediments measured by uptake of fluorescently labeled bacteria. Mar. Ecol. Prog. Ser. 89: 63-71.
73. Hwang S-J & Heath RT (1997) Bacterial productivity and protistan bacterivory in coastal and offshore communities of Lake Erie. Can. J. Fish. Aquat. Sci. 54: 788-799.
74. Jacobson DM & Anderson OR (1996) Widespread phagocytosis of ciliates and other protists by marine mixotrophic and heterotrophic thecate dinoflagellates. J. Phycol. 32: 279-285.
75. James MR & Hall JR (1998) Microzooplankton in different water masses associated with the Subtropical Convergence round the South Island, New Zealand. Deep-Sea Res. 45: 1689-1707.
76. Jeong HJ (1994) Predation by the heterotrophic dinoflagellate Protoperidinium cf divergens on copepod eggs and early naupliar stages. Mar. Ecol. Prog. Ser. 114: 203-208.
77. Jeong HJ (1999) The ecological roles of heterotrophic dinoflagellates in marine planktonic community. J. Eukaryotic Microbiol. 46: 390-396.
78. Jeong HJ & Latz MI (1994) Growth and grazing rates of the heterotrophic dinoflagellate, Protoperidinium, on red tide dinoflagellates. Mar. Ecol. Prog. Ser 106: 173-185.
79. Jeong HJ, Shim JH, Lee CW, Kim JS & Koh SM (1999a) Growth and grazing rates of the marine planktonic ciliate Strombidinopsis sp. on red-tide and toxic dinoflagellates. J. Eukaryotic Microbiol. 46: 69-76.
80. Jeong HJ, Shim JH, Kim JS, Park JY, Lee CW & Lee Y (1999b): Feeding by the mixotrophic thecate dinoflagellate Fragilidium cf. mexicanum on red-tide and toxic dinoflagellates. Mar. Ecol. Prog. Ser. 176: 263-277.
81. Jones HJ, Leadbeater BC & Green JC (1993) Mixotrophy in marine species of Chrysochromulina (Prymnesiophyceae) - ingestion and digestion of a small green flagellate. J. Mar. Biol. Assoc. UK 73: 283-296.
82. Jumars PA, Penry DL, Baross JA, Perry MJ & Frost BW (1989) Closing the microbial loop: dissolved carbon pathway to heterotrophic bacteria from incomplete ingestion, digestion and absorption in animals. Deep-Sea Res. 36: 483-495.
83. Jurgens K, Wickham SA, Rothhaupt KO & Santer B (1996) Feeding rates of macro- and microzooplankton on heterotrophic nanoflagellates. Limnol. Oceanogr. 41: 1833-1839.
84. Jurgens K, Pernthaler J, Schalla S & Amann R (1999) Morphological and compositional changes in a planktonic bacterial community in response to enhanced protozoan grazing. Appl. Environ. Microbiol. 65: 1241-1250.
85. Jurgens K & Gude H (1994) The potential importance of grazing resistant bacteria in planktonic systems. Mar. Ecol. Prog. Ser. 112: 169-188.
86. Jurgens K & Simek K (2000) Functional response and particle size selection of Halteria cf. grandinella, a common freshwater oligotrichous ciliates. Aquat. Microb. Ecol. 22: 57-68.
87. Kamiyama T (1994) The impact of grazing by microzooplankton in northern Hiroshima Bay, the Seto Inland Sea, Japan. Mar. Biol. 119: 77-88.
88. Kamiyama T, Itakura S & Nagasaki K (2000) Changes in microbial loop components: effects of a harmful algal bloom formation and its decay. Aquat. Microb. Ecol. 21: 21-30.
89. Karpov SA, Kersanach R & Williams DM (1998) Ultrastructure and 18sRNA gene sequences of a small heterotrophic flagellate Siluania monomastiga gen. et sp. nov. (Bicosoecida). Eur. J. Protistol. 34: 415-425.
90. Kemp PF (1988) Bacterivory by benthic ciliates: significance as a carbon resource and impact on sediment bacteria. Mar. Ecol. Prog. Ser. 36: 151-161.
91. Klaas C (1997) Microprotozooplankton distribution and grazing impact in the open waters of the Antarctic Circumpolar Current. Deep-Sea Res. II 44: 375-393.
92. Klein-Breteler WCM, Schogt N, Baas M, Schouten S & Kraay GW (1999) Trophic upgrading of food quality by protozoans enhancing copepod growth: role of essential lipids. Mar. Biol. 135: 191-198.
93. Kleppel GS (1993) On the diets of calanoid copepods. Mar. Ecol. Prog. Ser. 99: 183-195.
94. Koeve W & Ducklow H (Eds) (2001) JGOFS Research in the North Atlantic Ocean: a decade of research, synthesis and modeling. Deep Sea Res. Part II: Top. Stud. Oceanogr. 48(10).
95. Kolaczyk A & Wiackowski K (1997) Induced defence in the ciliate Euplotes octocarinatus is reduced when alternative prey are available to the predator. Acta Protozool. 36: 57-61.
96. Kolber ZS, VanDover CL, Niederman RA & Falkowski PG (2000) Bacterial photosynthesis in surface waters of the open ocean. Nature 407: 177-179.
97. Koshikawa H, Harada S, Watanabe M, Sato K & Akehata K (1996) Relative contribution of bacterial and photosynthetic production to metazooplankton as carbon sources. J. Plankton Res. 18: 2269-2281.
98. Landry MR (1993). Estimating rates of growth and grazing mortality of phytoplankton by the dilution method. In Kemp PF, Sherr BF, Sherr EB & Cole JJ (Eds), Handbook of Methods in Aquatic Microbial Ecology (pp 715-722). Lewis Publishers, Boca Raton, FL.
99. Landry MR, Brown SL, Campbell L, Constantinou J & Liu H (1998) Spatial patterns in phytoplankton growth and microzooplankton grazing in the Arabian Sea during monsoon forcing. Deep-Sea Res. II 45: 2353-2368.
100. Landry MR, Constantinou J, Latasa M, Brown SL, Bidigare RR & Ondrusek ME (2000) Biological response to iron fertilization in the eastern equatorial Pacific (IronEx II). III. Dynamics of phytoplankton growth and microzooplankton grazing. Mar. Ecol. Prog. Ser. 201: 73-83.
101. Latasa M, Landry MR, Schluter L & Bidigare RR (1997) Pigment-specific growth and grazing rates of phytoplankton in the central equatorial Pacific. Limnol. Oceanogr. 42: 289-298.
102. Lavrentyev PJ, WS Gardner & JR Johnson (1997) Cascading trophic effects on aquatic nitrification: experimental evidence and potential implications. Aquat. Microb. Ecol. 13: 161-175.
103. Laybourn-Parry J, Mell EM & Roberts EC (2000) Protozoan growth rates in Antarctic lakes. Polar Biol. 23: 445-451.
104. Lee WJ & Patterson DJ (1998) Diversity and geographic distribution of free-living heterotrophic flagellates - analysis by PRIMER. Protist 149: 229-244.
105. Legendre L & Le Fevre, J (1995) Microbial food webs and the export of biogenic carbon in oceans. Aquat. Microb. Ecol. 9: 69-77.
106. Legendre L & Rassoulzadegan F (1996) Food-web mediated export of biogenic carbon in oceans: hydrodynamic control. Mar. Ecol. Prog. Ser. 145: 179-193.
107. Lessard EJ & Murrell MC (1998) Microzooplankton herbivory and phytoplankton growth in the northwestern Sargasso Sea. Aquat. Microb. Ecol. 16: 176-188.
108. Li WKW (1998) Annual average abundance of heterotrophic bacteria and Synechococcus in surface ocean waters. Limnol. Oceanogr. 43: 1746-1753.
109. Lim EL, Caron DA & Dennett MR (1999) The ecology of Paraphysomonas imperforata based on studies employing oligonucleotide probe identification in coastal water samples and enrichment culture. Limnol. Oceanogr. 44: 37-51.
110. Liu H & Buskey EJ (1999) The exopolymer secretions (EPS) layer surrounding Aureoumbra lagunensis cells affects growth, grazing and behavior of protozoa. Limnol. Oceanogr. 45: 1187-1191.
111. Loret P, Le Gall S, Dupuy C, Blanchot J, Pastoureaud A, Delasalle B, Caisey X & Jonquieres G (2000) Heterotrophic protists as a trophic link between picocyanobacteria and the pearl oyster Pinctada margaritifera in the Takapoto lagoon (Tuamotu Archipelago, French Polynesia). Aquat. Microb. Ecol. 22: 215-226.
112. Maranger R, Bird DF & Price NM (1998) Iron acquisition by photosynthetic marine phytoplankton from ingested bacteria. Nature 396: 248-251.
113. Menden-Deuer S & Lessard EJ (2000) Carbon to volume relationships for dinoflagellates, diatoms, and other protist plankton. Limnol. Oceanogr. 45: 569-579.
114. Miller CB, Frost BW, Wheeler PA, Landry MR, Welschmeyer NA & Powell TM (1991) Ecological dynamics in the subarctic Pacific, a possibly iron-limited ecosystem. Limnol. Oceanogr. 36: 1600-1615.
115. Moloney CL (1992) Simulation studies of trophic flows and nutrient cycles in Benguela upwelling foodwebs. In: Payne AIL, Brink KH, Mann KH & Hilborn R (Eds) Benguela Trophic Functioning. South Africa J. Mar. Sci. 12: 457-476.
116. Montagnes DJS & Weiss T (2000) Fluctuating temperatures affect growth and production rates of planktonic ciliates. Aquat. Microb. Ecol. 21: 97-102.
117. Moon-van der Staay SY, De Wachter R & Vaulot D (2001) Oceanic 18S rDNA sequences from picoplankton reveal new eukaryotic lineages. Nature 409: 607-610.
118. Murray JW (Ed) (1995 & 1996) A U.S. JGOFS Process Study in the Equatorial Pacific. Deep Sea Res. Part II: Top. Stud. Oceanogr. 42(2-3) & 43(4-6).
119. Murrell MC & Hollibaugh JT (1998) Microzooplankton grazing in northern San Francisco Bay measured by the dilution method. Aquat. Microb. Ecol. 15: 53-63.
120. Murzov SA & Caron DA (1996) Sporadic high abundances of naked amoebae in the Black Sea plankton. Aquat. Microb. Ecol. 11: 161-169.
121. Nagata T (2000) Production mechanisms of dissolved organic matter. In Kirchman DL (Ed) Microbial Ecology of the Oceans (pp 121-151). Wiley-Liss, New York.
122. Nagata T & Kirchman DL (1990) Release of dissolved free and combined amino acids by bacterivorous marine flagellates. Limnol. Oceanogr. 36: 433-443.
123. Neuer S & Cowles TJ (1994) Protist herbivory in the Oregon upwelling system. Mar. Ecol. Prog. Ser. 113: 147-163.
124. Nodwell LM & Price NM (2001) Direct use of inorganic colloidal iron by marine mixotrophic phytoplankton. Limnol. Oceanogr. 46: 765-777.
125. Nygaard K & Tobiesen A (1993) Bacterivory in algae - a survival strategy during nutrient limitation. Limnol. Oceanogr. 38: 273-279.
126. Pace ML (1988) Bacterial mortality and the fate of bacterial production. Hydrobiologia 159: 41-49.
127. Pace ML, McManus GB & Findlay SEG (1990) Planktonic community structure determines the fate of bacterial production in a temperate lake. Limnol. Oceanogr. 35: 795-808.
128. Palmisano AC & Garrison DL (1993) Microorganisms in Antarctic sea ice. Antarctic Microbiol. 1: 67-218.
129. Partensky P, Hess WR & Vaulot D (1999) Prochlorococcus, a marine photosynthetic prokaryote of global significance. Microbiol. Mol. Biol. Rev. 63: 106-127.
130. Pedros-Alio C, Calderon-Paz JI, MacLean MH, Medina G, Marrase C, Gasol JM & Guixa-Boixereu N (2000) The microbial food web along salinity gradients. FEMS Microbiol. Ecol. 32: 143-155.
131. Perez MT, Dolan JR & Fukai E (1997) Planktonic oligotrich ciliates in the NW Mediterranean: growth rates and consumption by copepods. Mar. Ecol. Prog. Ser. 155: 89-101.
132. Pomeroy LR (1974) The ocean's food web: a changing paradigm. BioScience 24: 499-504.
133. Posch T, Simek K, Vrba J, Pernthaler J, Nedoma J, Sattler B, Sonntag B & Psenner R (1999) Predator-induced changes of bacterial size-structure and productivity studies on an experimental microbial community. Aquat. Microb. Ecol. 18: 235-246.
134. Putland J (2000) Microzooplankton herbivory and bacterivory in Newfoundland coastal waters during spring, summer and winter. J. Plankton Res. 22: 253-277.
135. Rasmussen LD, Hansen LH & Soerensen SJ (2001) Genetic diversity of kinetoplastide (protozoa) in natural environments revealed by denaturing gradient gel eletrophoresis. ISME-9 Abstract Mo.089, Amsterdam, August 2001.
136. Reckermann M (1997) Trophic interactions between picophytoplankton and micro- and nanozooplankton in the western Arabian Sea during the NE monsoon 1993. Aquat. Microb. Ecol. 12: 263-273.
137. Rice J, Sleigh MA, Burkill PH, Tarran GA, O'Conner CD & Zubkov M (1997) Flow cytometric analysis of characteristics of hybridization of species-specific fluorescent oligonucleotide probes to rRNA of marine nanoflagellates. Appl. Environ. Microbiol. 63: 938-944.
138. Rivkin RB & 18 others (1996) Vertical flux of biogenic carbon in the ocean: is there food web control? Science 272: 1163-1166.
139. Ruiz A, Franco K & Villate F. (1998) Microzooplankton grazing in the Estuary of Mundaka, Spain, and its impact on phytoplankton distribution along the salinity gradient. Aquat. Microb. Ecol. 14: 281-288.
140. Sakka A, Legendre, Gosselin M & Delesalle B (2000) Structure of the oligotrophic planktonic food web under low grazing of heterotrophic bacteria: Takapoto Atoll, French Polynesia. Mar. Ecol. Prog. Ser. 197: 1-17.
141. Sandberg J, Elmgren R & Wulff F (2000) Carbon flows in Baltic Sea food webs - a re-evaluation using a mass balance approach. J. Mar. Syst. 25: 249-260.
142. Sanders RW, Caron DA & Berninger UG (1992) Relationship between bacteria and heterotrophic nanoplankton in marine and fresh waters: an inter-ecosystem comparison. Mar. Ecol. Prog. Ser. 86: 1-14.
143. Sanders RW, Berninger UG, Lim EL, Kemp PF & Caron DA (2000) Heterotrophic and mixotrophic nanoplankton predation on picoplankton in the Sargasso Sea and on Georges Bank. Mar. Ecol. Prog. Ser. 192: 103-118.
144. Sautour B, Artigas LF, Delmas D, Herbland A & Laborde P (2000) Grazing impact of micro- and mesozooplankton during a spring situation in coastal waters off the Gironde estuary. J. Plankton Res. 22: 531-552.
145. Scott FJ, Davidson AT & Marchant HJ (2001) Grazing by the Antarctic sea ice ciliate Pseudocohnilembus. Polar Biol. 24: 127-131.
146. Sherr BF & Sherr EB (1991) Proportional distribution of total numbers, biovolume, and bacterivory among size classes of 2-20 (m nonpigmented marine flagellates. Mar. Microb. Food Webs 5: 227-237.
147. Sherr EB & Sherr BF (1992). Trophic roles of pelagic protists: phagotrophic flagellates as herbivores. Arch. Hydrobiol. Beih. 37: 165-172.
148. Sherr EB & Sherr BF (1994) Bacterivory and herbivory: key roles of phagotrophic protists in pelagic food webs. Microb. Ecol. 28: 223-235.
149. Sherr EB & Sherr BF (2002) Phagotrophy in aquatic microbial food webs. In: Newell S (Ed) Manual of Environmental Microbiology II (pp 409-418). ASM Press, Washington, DC.
150. Sherr BF & Sherr EB (2000) Marine microbes: an overview. In: Kirchman D (Ed) Microbial Ecology of the Oceans (pp 13-46). Wiley-Liss, New York.
151. Sherr BF, Sherr EB & Albright LJ (1987) Bacteria: link or sink? Science 235: 88-89.
152. Sherr BF, Sherr EB & Pedros-Alio C (1989) Simultaneous measurement of rates of bacterioplankton production and protozoan bacterivory in estuarine water. Mar. Ecol. Prog. Ser. 54: 209-219.
153. Sherr EB, Sherr BF, Hadas O & Berman T (1991a) High abundance of pico-plankton-ingesting ciliates during late fall in Lake Kinneret, Israel. J. Plankton Res. 13: 789-812.
154. Sherr EB, Sherr BF & McDaniel J (1991b) Clearance rates of <6 μm fluorescently labeled algae (FLA) by estuarine protozoa: potential grazing impact of flagellates and ciliates. Mar. Ecol. Prog. Ser. 69: 81-92.
155. Sherr BF, Sherr EB & McDaniel J (1992) Effect of protistan grazing on the frequency of dividing cells (FDC) in bacterioplankton assemblages. Appl. Environ. Microbiol. 58: 2381-2385.
156. Sherr EB, Caron DA & Sherr BF (1993) Staining of heterotrophic protists for visualization via epifluorescence microscopy. In: Kemp P, Sherr B, Sherr E & Cole J (Eds) Current Methods in Aquatic Microbial Ecology (pp 213-228). Lewis, New York.
157. Sherr EB, Sherr BF & Fessenden L (1997) Heterotrophic protists in the central Arctic Ocean. Deep-Sea Res. II 44: 1665-1682.
158. Sieburth JMcN (1981) Protozoan bacterivory in pelagic marine waters. In: Hobbie JE & Williams PleB (Eds) Heterotrophic Activity in the Sea, NATO Conference Series IV, Vol. 15, (pp 405-444).
159. Sieburth JMcN & Davis PG (1982) The role of heterotrophic nanoplankton in the grazing and nurturing of planktonic bacteria in the Sargasso and Caribbean Seas. Ann. Inst. Oceanogr. Paris 58: 285-296.
160. Simek K & Straskrabova K (1992) Bacterioplankton production and protozoan bacterivory in a mesotrophic reservoir. J. Plankton Res. 14: 773-788.
161. Simek K, Armengol J, Comerma M, Garcia JC, Chrzanowski TH, Kojecka P, Macek M, Nedoma J & Straskrabova V (1999) Impacts of protistan grazing on bacterial dynamics and composition in reservoirs of different trophy. In: Tundisi JG & Straskraba M (Eds) Theoretical Reservoir Ecology and its Applications (pp 267-282). Backhuys Publishers.
162. Simon M, Bunte C, Schulz M, Weiss M & Wunsch C (1998) Bacterioplankton dynamics in Lake Constance (Bodensee): Substrate utilization, growth control, and long-term trends. Arch. Hydrobiol. Spec. Iss. Adv. Limnol. 53: 195-221.
163. Sleigh MA & Zubkov MV (1998) Methods of estimating bacterivory by protozoa. Eur. J. Protistol.
164. Smetacek V (1981) The annual cycle of protozooplankton in Kiel Bight. Mar. Biol. 63: 1-11.
165. Solic M & Krstulovic N (1994) Role of predation in controlling bacterial and heterotrophic nanoflagellate standing stocks in the coastal Adriatic Sea: seasonal patterns. Mar. Ecol. Prog. Ser. 114: 219-235.
166. Stelfox-Widdicombe CE, Edwards ES, Burkill PH & Sleigh MA (2000) Microzooplankton grazing activity in the temperate and sub-tropical NE Atlantic: summer 1996. Mar. Ecol. Prog. Ser. 208: 1-12.
167. Stoecker DK & Capuzzo JM (1990) Predation on protozoa: its importance to zooplankton. J. Plankton Res. 12: 891-908.
168. Stone L & Berman T (1993) Positive feedback in aquatic ecosystems: the case of the microbial loop. Bull. Math. Biol. 55: 919-936.
169. Straile D (1997) Gross growth efficiencies of protozoan and metazoan zooplankton and their dependence on food concentration, predator-prey weight ratio, and taxonomic group. Limnol. Oceanogr. 42: 1375-1385.
170. Strom SL (1991) Growth and grazing rates of the herbivorous dinoflagellate Gymnodinium sp from the open subarctic Pacific Ocean. Mar. Ecol. Prog. Ser. 78(2): 103-113.
171. Strom SL (2000) Bacterivory: interactions between bacteria and their grazers. In: Kirchman DL (Ed) Microbial Ecology of the Oceans (pp 351-386). Wiley-Liss, New York.
172. Strom SL & Morello TA (1998) Comparative growth rates and yields of ciliates and heterotrophic dinoflagellates. J. Plankton Res. 20: 831-846.
173. Strom SL & Strom MW (1996) Microplankton growth, grazing, and community structure in the northern Gulf of Mexico. Mar. Ecol. Prog. Ser. 130: 229-240.
174. Strom SL, Postel JR & Booth BC (1993) Abundance, variability, and potential grazing impact of planktonic ciliates in the open subarctic Pacific Ocean. Prog. Oceanogr. 32: 185-203.
175. Strom SL, Benner R, Zeigler S & Dagg MJ (1997) Planktonic grazers are a potentially important source of marine dissolved organic carbon. Limnol. Oceanogr. 36: 50-63.
176. Strom SL, Miller CB & Frost BW (2000) What sets lower limits to phytoplankton stocks in high-nitrate, low-chlorophyll regions of the open ocean? Mar. Ecol. Prog. Ser. 193: 19-31.
177. Strom SL, Brainard MA, Holms JL & Olson MB (2001) Phytoplankton blooms are strongly impacted by microzooplankton grazing in coastal North Pacific waters. Mar. Biol. 138: 355-368.
178. Suzuki MT (1999) Effect of protistan bacterivory on coastal bacterioplankton diversity. Aquat. Microb. Ecol. 20: 261-272.
179. Swanberg NR & Caron DA (1991) Patterns of sarcodine feeding in epipelagic oceanic plankton. J. Plankton Res. 13: 287-312.
180. Tamigneaux E, Mingelbier M, Klein B & Legendre L (1997) Grazing by protists and seasonal changes in the size structure of protozooplankton and phytoplankton in a temperate nearshore environment (western Gulf of St. Lawrence, Canada). Mar. Ecol. Prog. Ser. 146: 231-247.
181. Tett P & Wilson H (2000) From biogeochemical to ecological models of marine microplankton. J. Mar. Syst. 25: 431-446.
182. Thingstad TF, Hagstrom A & Rassoulzadegan F (1997) Accumulation of degradable DOC in surface waters: is it caused by a malfunctioning microbial loop? Limnol. Oceanogr. 42: 398-404.
183. Thingstad TF, Perez M, Pelegri S, Dolan J & Rassoulzadegan F (1999)
184. Tong SM, Nygaard K, Bernard C, Vors N & Patterson DJ (1998) Heterotrophic flagellates from the water column in Port Jackson, Sydney, Australia. Eur. J. Protistology 34: 162-194.
185. Tranvik LJ, Sherr EB & Sherr BF (1993) Uptake and utilization of 'colloidal DOM' by heterotrophic flagellates in seawater. Mar. Ecol. Prog. Ser. 92: 301-309.
186. Turley CM & Carstens M (1991) Pressure tolerance of oceanic flagellates: implications for remineralization of organic matter. Deep-Sea Res. 38: 403-413.
187. Van Hannen EJ, Veninga M, Bloem J, Gons HJ & Laanbroek HJ (1999) Genetic changes in bacterial community structure associated with protistan grazers. Arch. Hydrobiol. 145: 25-38.
188. Vaque D, Gasol JM & Marrase C (1994) Grazing rates on bacteria: the significance of methodology and ecological factors. Mar. Ecol. Prog. Ser. 109: 263-274.
189. Verity PG (1991a) Feeding in planktonic protozoans: evidence for non-random acquisition of prey. Mar. Microb. Food Webs 5: 69-76.
190. Verity PG (1991b) Measurement and simulation of prey uptake by marine planktonic ciliates fed plastidic and aplastidic nanoplankton. Limnol. Oceanogr. 36: 729-750.
191. Verity PG & Paffenhofer G-A (1996) On asssessment of prey ingestion by copepods. J. Plankton Res. 18: 1767-1779.
192. Verity PG & Vernet M (1992) Microzooplankton grazing, pigments, and composition of plankton communities during late spring in two Norwegian fjords. Sarsia 77: 263-274.
193. Verity PG, Stoecker DK, Sieracki ME & Nelson JR (1993) Grazing, growth, and mortality of microzooplankton during the 1989 North Atlantic spring bloom at 470N, 180W. Deep-Sea Res. 40: 1793-1814.
194. Verity PG, Stoecker DK, Sieracki ME & Nelson JR (1996) Microzooplankton grazing of primary production at 140OW in the equatorial Pacific. Deep-Sea Res. 43: 1227-1255.
195. Vickerman K (1998) Revolution among the Protozoa. In: Coombs GH, Vickerman K, Sleigh MA & Warren A (Eds) Evolutionary Relationships among Protozoa (pp 1-24). Kluwer Academic Publishers, London.
196. Vors N (1992a) Heterotrophic amoeba, flagellates and heliozoa from the Tvarminne area, Gulf of Finland, in 1988-1990. Ophelia 36: 1-109.
197. Vors N (1992b) Ultrastructure and autecology of the marine, heterotrophic flagellates Leucocryptos marina (Braarud) Butcher 1967 (Katablepharidaceae/Kathabelpharidae) with a discussion of the genera Leucocryptos and Katablepharis/Kathabelpharis. Eur. J. Protistol. 28: 369-389.
198. Waterhouse TY & Welschmeyer (1995) Taxon-specific analysis of microzooplankton grazing rates and phytoplankton growth rates. Limnol. Oceanogr. 40: 827-834.
199. Wallberg P, Johnson PR & Johnstone R (1999) Abundance, biomass and growth rates of pelagic microorganisms in a tropical coastal ecosystem. Aquat. Microb. Ecol. 18: 175-185.
200. Weisse T (1997) Growth and production of heterotrophic nanoflagellates in a meso-eutrophic lake. J. Plankton Res. 19: 703-723.
201. Weisse T (this volume) The significance of inter- and intraspecific variation in bacterivorous and herbivorous protists. Antonie van Leeuwenhoek, submitted.
202. Weisse T & Muller H (1998) Planktonic protozoa and the microbial food web in Lake Constance. Arch. Hydrobiol. Spec. Iss. Adv. Limnol. 53: 223-254.
203. Welschmeyer N, Goericke R, Strom S & Peterson W (1991) Phytoplankton growth and herbivory in the subarctic Pacific: A chemotaxonomic analysis. Limnol. Oceanogr. 36: 1631-1649.
204. Wicklow BJ (1997) Signal-induced defensive phenotypic changes in ciliated protists: morphological and ecological implications for predator and prey. J. Eukaryotic Microbiol. 44: 176-188.
205. Wolfe GV (2000) The chemical defense ecology of marine unicellular plankton: constraints, mechanisms, and impacts. Biol. Bull. 198: 225-244.
206. Wolfe GV, Steinke M & Kirst GO (1997) Grazing activated chemical defense in a unicellular marine alga. Nature 387: 894-897.
207. Zubkov MV, Sleigh MA & Burkill PH (1998) Measurement of bacterivory by protists in open ocean waters. FEMS Microb. Ecol. 27: 85-102.
208. Zubkov MV, Sleigh MA & Burkill PH (2000) Assaying picoplankton by flow cytometry of underway samples collected along a meridional transect across the Atlantic Ocean. Aquat. Microb. Ecol. 21: 13-20.