TY - JOUR
T1 - Process length variation of the cyst of the dinoflagellate Protoceratium reticulatum in the North Pacific and Baltic-Skagerrak region
T2 - Calibration as an annual density proxy and first evidence of pseudo-cryptic speciation
AU - Mertens, Kenneth Neil
AU - Bringué, Manuel
AU - van Nieuwenhove, Nicolas
AU - Takano, Yoshihito
AU - Pospelova, Vera
AU - Rochon, André
AU - de Vernal, Anne
AU - Radi, Taoufik
AU - Dale, Barrie
AU - Patterson, R. Timothy
AU - Weckström, Kaarina
AU - Andrén, Elinor
AU - Louwye, Stephen
AU - Matsuoka, Kazumi
PY - 2012/10
Y1 - 2012/10
N2 - 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: σ t annual=-0.8674×average process length+1029.3 (R2=0.84), with a standard error of 0.78kgm-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: σt annual=3.5457×average process length-993.28 ( 2=0.86), with a standard error of 3.09kg -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.
AB - 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: σ t annual=-0.8674×average process length+1029.3 (R2=0.84), with a standard error of 0.78kgm-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: σt annual=3.5457×average process length-993.28 ( 2=0.86), with a standard error of 3.09kg -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.
KW - Baltic-Skagerrak
KW - Effingham Inlet
KW - Sediment trap
KW - SSS
KW - SST
UR - http://www.scopus.com/inward/record.url?scp=84867332814&partnerID=8YFLogxK
U2 - 10.1002/jqs.2564
DO - 10.1002/jqs.2564
M3 - Article
VL - 27
SP - 734
EP - 744
JO - Journal of Quaternary Science
JF - Journal of Quaternary Science
SN - 0267-8179
IS - 7
ER -