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Nature of phosphorus limitation in the ultraoligotrophic eastern Mediterranean
Thingstad, T.F.; Krom, M.D.; Mantoura, R.F.C.; Flaten, G.A.F.; Groom, S.; Herut, B.; Kress, N.; Law, C.S.; Pasternak, A.; Pitta, P.; Psarra, S.; Rassoulzadegan, F.; Tanaka, T.; Tselepides, A.; Wassmann, P.; Woodward, E.M.S.; Wexels Riser, Ch.; Zodiatis, G.; Zohary, T. (2005). Nature of phosphorus limitation in the ultraoligotrophic eastern Mediterranean. Science (Wash.) 309(5737): 1068-1071
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075, more
Peer reviewed article  

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Authors  Top 
  • Thingstad, T.F.
  • Krom, M.D.
  • Mantoura, R.F.C.
  • Flaten, G.A.F.
  • Groom, S., more
  • Herut, B.
  • Kress, N.
  • Law, C.S.
  • Pasternak, A.
  • Pitta, P., more
  • Psarra, S., more
  • Rassoulzadegan, F., more
  • Tanaka, T.
  • Tselepides, A., more
  • Wassmann, P.
  • Woodward, E.M.S.
  • Wexels Riser, Ch.
  • Zodiatis, G., more
  • Zohary, T.

    Phosphate addition to surface waters of the ultraoligotrophic, phosphorusstarved eastern Mediterranean in a Lagrangian experiment caused unexpected ecosystem responses. The system exhibited a decline in chlorophyll and an increase in bacterial production and copepod egg abundance. Although nitrogen and phosphorus colimitation hindered phytoplankton growth, phosphorous may have been transferred through the microbial food web to copepods via two, not mutually exclusive, pathways: (i) bypass of the phytoplankton compartment by phosphorus uptake in heterotrophic bacteria and (ii) tunnelling, whereby phosphate luxury consumption rapidly shifts the stoichiometric composition of copepod prey. Copepods may thus be coupled to lower trophic levels through interactions not usually considered.

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