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Process length variation of the cyst of the dinoflagellate Protoceratium reticulatum in the North Pacific and Baltic-Skagerrak region:calibration as an annual density proxy and first evidence of pseudo-cryptic speciation
Mertens, K.N.; Bringue, M.; Van Nieuwenhove, N.; Takano, Y.; Pospelova, V.; Rochon, A.; De Vernal, A.; Radi, T.; Dale, B.; Patterson, R.T.; Andren, E.; Louwye, S.; Matsuoka, K. (2012). Process length variation of the cyst of the dinoflagellate Protoceratium reticulatum in the North Pacific and Baltic-Skagerrak region:calibration as an annual density proxy and first evidence of pseudo-cryptic speciation. J. Quaternary Sci. 27(7): 734-744. https://dx.doi.org/10.1002/jqs.2564
In: Journal of Quaternary Science. John Wiley & Sons: Harlow, Essex. ISSN 0267-8179; e-ISSN 1099-1417, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Geological time > Phanerozoic > Geological time > Cenozoic > Quaternary
    Dinoflagellata [WoRMS]
    ANE, Skagerrak [Marine Regions]; I, Pacific Basin [Marine Regions]
    Marien/Kust
Author keywords
    Baltic-Skagerrak; Effingham Inlet; sediment trap; SSS; SST
Auteurs  Top 
  • Mertens, K.N., meer
  • Bringue, M.
  • Van Nieuwenhove, N.
  • Takano, Y.
  • Pospelova, V.
  • Rochon, A.
  • De Vernal, A.
  • Radi, T.
  • Dale, B.
  • Patterson, R.T.
  • Andren, E.
  • Louwye, S., meer
  • Matsuoka, K.
Abstract
    Process length variation of cysts of the dinoflagellate Protoceratium reticulatum (Claparède et Lachmann) Bütschli in surface sediments from the North Pacific was investigated. The average process length showed a significant inverse relation to annual seawater density: st annual?=?-0.8674?×?average process length?+?1029.3 (R2?=?0.84), with a standard error of 0.78?kg?m-3. A sediment trap study from Effingham Inlet in British Columbia revealed the same relationship between average process length and local seawater density variations. In the Baltic–Skagerrak region, the average process length variation was related significantly to annual seawater density: st annual?=?3.5457?×?average process length?-?993.28 (R2?=?0.86), with a standard error of 3.09?kg?m-3. These calibrations cannot be reconciled, which accentuates the regional character of the calibrations. This can be related to variations in molecular data (small subunit, long subunit and internal transcribed spacer sequences), which show the presence of several genotypes and the occurrence of pseudo-cryptic speciation within this species.
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