TY - JOUR
T1 - Process length variation in cysts of a dinoflagellate, Lingulodinium machaerophorum, in surface sediments
T2 - Investigating its potential as salinity proxy
AU - Mertens, Kenneth N.
AU - Ribeiro, Sofia
AU - Bouimetarhan, Ilham
AU - Caner, Hulya
AU - Combourieu Nebout, Nathalie
AU - Dale, Barrie
AU - De Vernal, Anne
AU - Ellegaard, Marianne
AU - Filipova, Mariana
AU - Godhe, Anna
AU - Goubert, Evelyne
AU - Grøsfjeld, Kari
AU - Holzwarth, Ulrike
AU - Kotthoff, Ulrich
AU - Leroy, Suzanne A.G.
AU - Londeix, Laurent
AU - Marret, Fabienne
AU - Matsuoka, Kazumi
AU - Mudie, Peta J.
AU - Naudts, Lieven
AU - Peña-Manjarrez, José Luis
AU - Persson, Agneta
AU - Popescu, Speranta Maria
AU - Pospelova, Vera
AU - Sangiorgi, Francesca
AU - van der Meer, Marcel T.J.
AU - Vink, Annemiek
AU - Zonneveld, Karin A.F.
AU - Vercauteren, Dries
AU - Vlassenbroeck, Jelle
AU - Louwye, Stephen
PY - 2009/1/10
Y1 - 2009/1/10
N2 - A biometrical analysis of the dinoflagellate cyst Lingulodinium machaerophorum [Deflandre, G., Cookson, I.C., 1955. Fossil microplankton from Australia late Mesozoic and Tertiary sediments. Australian journal of Marine and Freshwater Research 6: 242-313.] Wall, 1967 in 144 globally distributed surface sediment samples revealed that the average process length is related to summer salinity and temperature at a water depth of 30 m by the equation (salinity/temperature) = (0.078*average process length + 0.534) with R2 = 0.69. This relationship can be used to reconstruct palaeosalinities, albeit with caution. The particular ecological window can be associated with known distributions of the corresponding motile stage Lingulodinium polyedrum (Stein) Dodge, 1989. Confocal laser microscopy showed that the average process length is positively related to the average distance between process bases (R2 = 0.78), and negatively related to the number of processes (R2 = 0.65). These results document the existence of two end members in cyst formation: one with many short, densely distributed processes and one with a few, long, widely spaced processes, which can be respectively related to low and high salinity/temperature ratios. Obstruction during formation of the cysts causes anomalous distributions of the processes. From a biological perspective, processes function to facilitate sinking of the cysts through clustering.
AB - A biometrical analysis of the dinoflagellate cyst Lingulodinium machaerophorum [Deflandre, G., Cookson, I.C., 1955. Fossil microplankton from Australia late Mesozoic and Tertiary sediments. Australian journal of Marine and Freshwater Research 6: 242-313.] Wall, 1967 in 144 globally distributed surface sediment samples revealed that the average process length is related to summer salinity and temperature at a water depth of 30 m by the equation (salinity/temperature) = (0.078*average process length + 0.534) with R2 = 0.69. This relationship can be used to reconstruct palaeosalinities, albeit with caution. The particular ecological window can be associated with known distributions of the corresponding motile stage Lingulodinium polyedrum (Stein) Dodge, 1989. Confocal laser microscopy showed that the average process length is positively related to the average distance between process bases (R2 = 0.78), and negatively related to the number of processes (R2 = 0.65). These results document the existence of two end members in cyst formation: one with many short, densely distributed processes and one with a few, long, widely spaced processes, which can be respectively related to low and high salinity/temperature ratios. Obstruction during formation of the cysts causes anomalous distributions of the processes. From a biological perspective, processes function to facilitate sinking of the cysts through clustering.
KW - Biometry
KW - Dinoflagellate cysts
KW - Lingulodinium machaerophorum
KW - Lingulodinium polyedrum
KW - Palaeosalinity
KW - Processes
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U2 - 10.1016/j.marmicro.2008.10.004
DO - 10.1016/j.marmicro.2008.10.004
M3 - Article
AN - SCOPUS:58149466194
SN - 0377-8398
VL - 70
SP - 54
EP - 69
JO - Marine Micropaleontology
JF - Marine Micropaleontology
IS - 1-2
ER -