Comparison of terminal and intercalary Eucampia valves from northern Kerguelen Leg 119 sites with those of mud-line sediments from Prydz Bay (Table 1) ...

• Main Author: Fryxell, Greta A
• Format: Dataset
• Language: English
• Published: PANGAEA 1991
• Subjects: Event label; Sample code/label; Number; Eucampia antarctica var. antarctica; Eucampia antarctica var. recta; Drilling/drill rig; DSDP/ODP/IODP sample designation; Leg119; Joides Resolution; Ocean Drilling Program ODP; Antarc*; Antarctic; Antarctica; E. Antarctica; Prydz Bay; Weddell Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.758184; https://doi.pangaea.de/10.1594/PANGAEA.758184

On ODP Leg 119, specimens collected of Eucampia antarctica (Castracane) Mangin var. antarctica exhibited morphological and distribution patterns that contrasted with those of Eucampia antarctica var. recta (Mangin) G. Fryxell et Prasad. E. antarctica var. antarctica was found over the northern Kerguelen Plateau, north of the summer Antarctic Convergence Zone, in the subpolar plankton and in the sediments. E. antarctica var. recta was found close to the continent in Prydz Bay. It was also collected near and under the ice in the northern Weddell Sea on a National Science Foundation Division of Polar Programs project (1983-1988).A key feature for distinguishing the two varieties in the field is the growth habit, with curvature in broad girdle view of the nominate, subpolar variety in both the winter stage and the more lightly silicified summer stage. A low ratio of terminal to intercalary valves results from the repeated division of the original doublets into chains of considerable length of the winter stage. ... : Supplement to: Fryxell, Greta A (1991): Comparison of winter and summer growth stages of the diatom Eucampia antarctica from the Kerguelen Plateau and South of the Antarctic Convergence Zone. In: Barron, J; Larsen, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 119, 675-685 ...