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Zooplankton Growth, Respiration and Grazing on the Australian Margins of the Tropical Indian and Pacific Oceans.
McKinnon, A David; Doyle, Jason; Duggan, Samantha; Logan, Murray; Lønborg, Christian; Brinkman, Richard.
Afiliación
  • McKinnon AD; Australian Institute of Marine Science, P.M.B. No. 3, Townsville M.C. 4810, Queensland, Australia; The Western Australian Marine Science Institution, Perth, Western Australia, Australia; School of Marine and Tropical Biology, James Cook University, Townsville 4810, Queensland, Australia.
  • Doyle J; Australian Institute of Marine Science, P.M.B. No. 3, Townsville M.C. 4810, Queensland, Australia.
  • Duggan S; Australian Institute of Marine Science, P.M.B. No. 3, Townsville M.C. 4810, Queensland, Australia.
  • Logan M; Australian Institute of Marine Science, P.M.B. No. 3, Townsville M.C. 4810, Queensland, Australia.
  • Lønborg C; Australian Institute of Marine Science, P.M.B. No. 3, Townsville M.C. 4810, Queensland, Australia.
  • Brinkman R; Australian Institute of Marine Science, P.M.B. No. 3, Townsville M.C. 4810, Queensland, Australia; The Western Australian Marine Science Institution, Perth, Western Australia, Australia.
PLoS One ; 10(10): e0140012, 2015.
Article en En | MEDLINE | ID: mdl-26469275
The specific activity of aminoacyl-tRNA synthetases (spAARS), an index of growth rate, and of the electron transport system (spETS), an index of respiration, was measured in three size fractions (73-150 µm, >150 µm and >350 µm) of zooplankton during five cruises to tropical coastal waters of the Kimberley coast (North West Australia) and four cruises to waters of the Great Barrier Reef (GBR; North East Australia). The N-specific biomass of plankton was 3-4-fold higher in the Kimberley than on the GBR in all 3 size classes: Kimberley 1.27, 3.63, 1.94 mg m-3; GBR 0.36, 0.88 and 0.58 mg m-3 in the 73-150 µm, >150 µm and >350 µm size classes, respectively. Similarly, spAARS activity in the Kimberley was greater than that of the GBR: 88.4, 132.2, and 147.6 nmol PPi hr-1 mg protein -1 in the Kimberley compared with 71.7, 82.0 and 83.8 nmol PPi hr-1 mg protein -1 in the GBR, for the 73-150 µm, >150 µm and >350 µm size classes, respectively. Specific ETS activity showed similar differences in scale between the two coasts: 184.6, 148.8 and 92.2 µL O2 hr-1 mg protein-1 in the Kimberley, against 86.5, 88.3 and 71.3 µL O2 hr-1 mg protein-1 in the GBR. On the basis of these measurements, we calculated that >150 µm zooplankton grazing accounted for 7% of primary production in the Kimberley and 8% in GBR waters. Area-specific respiration by >73 µm zooplankton was 7-fold higher in the Kimberley than on the GBR and production by >150 µm zooplankton was of the order of 278 mg C m-2 d-1 in the Kimberley and 42 mg C m-2 d-1 on the GBR. We hypothesize that the much stronger physical forcing on the North West shelf is the principal driver of higher rates in the west than in the east of the continent.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Zooplancton / Herbivoria / Aminoacil-ARNt Sintetasas Límite: Animals País/Región como asunto: Oceania Idioma: En Revista: PLoS One Asunto de la revista: CIENCIA / MEDICINA Año: 2015 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Zooplancton / Herbivoria / Aminoacil-ARNt Sintetasas Límite: Animals País/Región como asunto: Oceania Idioma: En Revista: PLoS One Asunto de la revista: CIENCIA / MEDICINA Año: 2015 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Estados Unidos