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Metazooplankton distribution across the Southern Indian Ocean with emphasis on the role of Larvaceans

By Cornelia Jaspers, Torkel Gissel Nielsen, Jacob Carstensen, Russell R. Hopcroft and Eva Friis Møller


The abundance and depth distribution of metazoans >20 μm were investigated at seven stations across the Southern Indian Ocean (SIO), October–November 2006. Copepod nauplii, copepodites and larvaceans dominated the metazooplankton community. Copepodites were most abundant within Agulhas Current and Southern Ocean waters, decreasing toward subtropical/tropical areas, whereas larvaceans showed the inverse pattern. The fraction <200 μm contained the majority of the zooplankton enumerated, including 81, 23 and 93% of the larvacean, copepodite and nauplii abundances, respectively. The relative abundance of larvaceans compared with copepodites increased from 7 to 44% from South Africa towards Australia. Peak copepodite biomass was observed off South Africa, while larvacean biomass was <1% of the copepodite biomass there, increasing to 6% in tropical waters. Both copepodite and nauplii biomass were positively correlated to total Chl a (P < 0.0001), larvacean biomass was only significantly related to temperature (P = 0.0213). Despite their low biomass, larvacean production was estimated to exceed the copepod production up to five times. It appears that the abundance and role of larvaceans in the SIO has been severely underestimated in previous studies; thus future investigations into the fate of organic matter will remain incomplete if this group is not adequately considered

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    1. (2005). A comparison of appendicularian seasonal cycles in four distinct European Coastal environments. In
    2. (2005). A review of appendicularians as prey of invertebrate and fish predators. In
    3. (1990). Abundance and biomass of herbivorous zooplankton off Kingston, Jamaica, with estimates of their annual production.
    4. (1998). Appendicularia distribution and zoogeography.
    5. (1973). Appendicularia from the Indian Ocean, the Red Sea and the Persian Gulf.
    6. (1985). Bioenergetics of the planktonic copepod Acartia tonsa—relation between feeding, egg-production and respiration, and composition of specific dynamic action.
    7. (1986). Biological production at marine ergoclines.
    8. (1996). Biological removal of fine-grained lithogenic particles from a large river plume.
    9. (1998). Blooms of tunicates Oikopleura spp. and Dolioletta gegenbauri in the Seto Inland Sea, Japan, during summer.
    10. (1986). Chemical composition and energy content. In
    11. (2005). Clearance rates and effi-ciencies of Oikopleura fusiformis on the natural prey assemblage of a subtropical coastal ecosystem. In
    12. (2007). Community structure and grazing impact of mesozooplankton during late spring/early summer 2004/2005 in the vicinity of the Crozet Islands (Southern Ocean). Deep-Sea Res.
    13. (1931). Die Appendicularian der Deutschen Tiefsee-Expedition. Wissenschaftliche Ergebnisse der Deutschen Tiefsee-Expedition auf dem Dampfer
    14. (1926). Die Appendicularien der deutschen Su ¨dpolar-Expedition 1901–1903.
    15. (1914). Die Appendicularien der Valdivia-Expedition.
    16. (2003). Do calanoid copepods suppress appendicularians in the coastal ocean?
    17. (1994). Egg-production, growth and development of the cyclopoid copepod Oithona similis.
    18. (2004). Epipelagic mesozooplankton distribution and abundance over the Mascarene Plateau and Basin,
    19. (1998). Feeding and Metabolism of Appendicularia.
    20. (1964). Feeding of plaice+sandeel larvae in southern North Sea.
    21. (1992). Filtration of colloidal melanin from sea-water by planktonic tunicates.
    22. (2003). Food limitation and growth in temperate epipelagic appendicularians (Tunicata).
    23. (1988). Food Size Spectra, Ingestion and Growth of the Copepod Acartia tonsa during development—implications for determination of copepod production.
    24. (2003). Fronts and mesoscale variability in the southern Indian Ocean as inferred from the TOPEX/POSEIDON and ERS-2 altimetry data.
    25. (2005). Giant larvacean houses: rapid carbon transport to the deep sea floor.
    26. (2005). Grazing of two common appendicularians on the natural prey assemblage of a tropical coastal ecosystem.
    27. (1997). Gross growth efficiencies of protozoan and metazoan zooplankton and their dependence on food concentration, predator–prey weight ratio, and taxonomic group.
    28. (1998). Heterotrophic protozoa and small metazoa: feeding rates and prey-consumer interactions.
    29. (2001). Is Oithona the most important copepod in the world’s oceans?
    30. (1987). Measurements of chlorophyll-A from phytoplankton using ethanol as extraction solvent.
    31. (2005). Mesozooplankton dynamics in nearshore waters of the Great Barrier Reef.
    32. (2007). Molecular quantification of differential ingestion and particle trapping rates by the appendicularian Oikopleura dioica as a function of prey size and shape.
    33. (1996). Organism life cycles, predation, and the structure of marine pelagic ecosystems.
    34. (1978). Pelagic ecosystem structure—heterotrophic compartments of plankton and their relationship to plankton size fractions—comment.
    35. (2001). Pelagic tunicates: why gelatinous?
    36. (2007). Physical and biological processes at the subtropical convergence in the south-west Indian Ocean.
    37. (2004). Plankton community structure and carbon cycling in a coastal upwelling system. I. Bacteria, microprotozoans and phytoplankton in the diet of copepods and appendicularians.
    38. (2006). Plankton community structure and variability in the Scotia Sea: austral summer
    39. (2001). Plankton composition and cycling of carbon during the rainy season in a tropical coastal ecosystem,
    40. (1998). Population regulation and role of mesozooplankton in shaping marine pelagic food webs.
    41. (2004). Predation by calanoid copepods on the appendicularian Oikopleura dioica.
    42. (1962). Predator–prey size relationship for plaice larvae feeding on Oikopleura.
    43. (1997). Production of Oikopleura dioica (Appendicularia) following a picoplankton ‘bloom’ in a eutrophic coastal area.
    44. (1999). Production of Oikopleura longicauda (Tunicata: Appendicularia) in Toyama bay,
    45. (1998). Production of tropical copepods in Kingston Harbour, Jamaica: the importance of small species.
    46. (1998). Production of tropical larvaceans in Kingston Harbour, Jamaica: are we ignoring an important secondary producer?
    47. (2008). Productivity and grazing impact of Oikopleura dioica (Tunicata, Appendicularia) in Tokyo Bay.
    48. (1998). Response of phytoplankton community structure and taxon-specific growth rates to seasonally varying physical forcing in the Sargasso Sea off Bermuda.
    49. (1992). Retention efficiency of submicrometer particles by the pharyngeal filter of the pelagic tunicate Oikopleura vanhoeffeni.
    50. (2005). Seasonal distribution, diversity and biochemical composition of Appendicularians in Norwegian Fjords. In
    51. (1995). Seasonal-variations in abundance, size composition, biomass and production-rate of Oikopleura dioica (Fol)
    52. (2006). Sedimentation following the spring bloom in Disko Bay, West Greenland, with special emphasis on the role of copepods.
    53. (2001). Size paradigms in copepod communities: a re-examination.
    54. (1990). Size-weight relationships and biomass of tropical neritic copepods off
    55. (1995). Spatial heterogeneity, biomass and size structure of plankton of the Indian-Ocean—some general trends.
    56. (2003). Summer copepod production in subtropical waters adjacent to Australia’s North West Cape.
    57. (2008). Summer planktonic copepod communities of Australia’s North West Cape (Indian Ocean) during the 1997-99 El Nino/La Nina.
    58. (1989). The carbon and chlorophyll content of phytoplankton from various nutrient regimes.
    59. (1981). The impact of appendicularian grazing on natural food concentrations in situ.
    60. (1963). The Indian Ocean standard net.
    61. (1998). The role of appendicularians in marine food webs.
    62. (1994). The size ratio between planktonic predators and their prey.
    63. (2004). Trophodynamic function of copepods, appendicularians and protozooplankton in the late summer zooplankton community in the Skagerrak.
    64. (2005). Trophodynamics of selected mesozooplankton in the west-Indian sector of the Polar Frontal Zone, Southern Ocean.
    65. (1969). Upwelling and Fish Production. Food and Agriculture organization of the United Nations,
    66. (2004). Variability in plankton community structure, metabolism, and vertical carbon fluxes along an upwelling filament (Cape Juby,
    67. (2003). Vertical distribution of subtropical epiplanktonic copepods.
    68. (1997). Zooplankton grazing and growth: Scaling within the 2-2,000-mu m body size range.
    69. (1998). Zooplankton growth rates: the influence of female size and resources on egg production of tropical marine copepods.
    70. (1998). Zooplankton growth rates: the larvaceans Appendicularia, Fritillaria and Oikopleura in tropical waters.
    71. (1995). Zooplankton growth-rates— extraordinary production by the larvacean Oikopleura dioica in tropical waters.
    72. (2006). Zooplankton response to storm runoff in a tropical estuary: bottom-up and top-down controls.
    73. (1979). Zooplankton Sampling Monogr. on Oceanographic Methodology. UNESCO-Press,
    74. (1973). Zooplankton studies in the Indian Ocean.

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