TY - JOUR
TI - Coccolithophorids in Polar Waters: Calciarcus spp. Revisited
AU - Thomsen, Helge Abildhauge
AU - Østergaard, Jette Buch
TI - Coccolithophorids in Polar Waters: Calciarcus spp. Revisited
AB - The genus Calciarcus is revisited here with the purpose of providing, based on additional sampling from both polar regions, an update on species diversity and morphology that can serve as a reference for future work. The geographic realm of the genus is significantly widened and a case is built based on consistency in appearance in favour of adding Calciarcus spp. to the well-defined community of bipolar weakly calcified coccolithophorid genera. Despite the multitude of specimens available for analysis and the fact that the specimens examined distribute themselves within three clusters based on morphological features of coccolith superstructures, it has not been possible at this stage to define a robust framework for differentiation among species of Calciarcus. Circumstantial evidence exist linking species of Wigwamma with species of Calciarcus in haploid-diploid life cycles.
VL - 2014
IS - Volume 53, Issue 2
PY - 2014
SN - 0065-1583
C1 - 1689-0027
SP - 145
EP - 157
DO - 10.4467/16890027AP.14.014.1595 
UR - https://ejournals.eu/en/journal/acta-protozoologica/article/coccolithophorids-in-polar-waters-calciarcus-spp-revisited
KW - Coccolithophorid
KW - holococcolith
KW - Calciarcus
KW - polar regions
KW - electron microscopy