DOI: 10.5061/dryad.s3013
title: Data from: Deep-sea benthic ostracodes from multiple core and epibenthic sledge samples in Icelandic waters

description: Deep-sea benthic Ostracoda (Crustacea) in Icelandic waters are poorly
 known. Here we report deep-sea ostracode assemblages from the multiple
 core (MUC) and the epibenthic sledge (EBS) samples collected from
 Icelandic waters by the first cruise of the IceAGE (Icelandic Marine
 Animals: Genetics and Ecology) project. Samples from shelf-edge and
 lower-bathyal working areas are examined. The results show (1) distinct
 MUC and EBS faunas due to the large difference in mesh size of MUC and
 EBS; and (2) distinct shelf-edge and lower-bathyal ostracode faunas. Such
 remarkable faunal turnover from shelf to bathyal depths is similar to the
 faunal turnovers reported from depth transects in the adjacent regions of
 the western North Atlantic Ocean, the Greenland Sea, and the North Sea,
 but, at the same time, there are certain differences in the faunal
 composition between the Icelandic waters and these adjacent regions. In
 addition, we illustrate many Icelandic deep-sea ostracode species with
 high-resolution scanning electron microscopy and composite all-in-focus
 stereomicroscopic images for the first time. These results provide
 important basic information on deep-sea ostracode research and
 biogeography of this important region connecting North Atlantic proper and
 Nordic Seas.
description: High-resolution Fig.
 3Fig.
 3 Scanning electron microscopy (1, 3, 5) and composite stereomicroscope
 (2, 4, 6) images of ostracode species from the MUC sample. 1–2,
 Argilloecia acuminata Müller, 1894, 1004 MUC, 0.0–0.5 cm depth, adult LV.
 3–4, Argilloecia cf. conoidea Sars, 1923, 1004 MUC, 0.0–0.5 cm depth,
 adult LV. 5–6, Parakrithe sp., 1004 MUC, 0.0–0.5 cm depth, adult male RV.
 Scale bar represents 1 mm. All lateral views. LV: left valve. RV: right
 valve.Yasuhara_Fig3.pdfHigh-resolution Fig. 4Fig. 4 Scanning electron microscopy (1, 3, 5, 7) and composite stereomicroscope (2, 4, 6, 8) images of ostracode species from the MUC samples. 1–4, Krithe ayressi Coles, Whatley and Moguilevsky, 1994. 1–2, 959 MUC, 0.0–1.0 cm depth, adult male? LV. 3–4, 1004 MUC, 0.5–1.0 cm depth, adult female? RV. 5–6, Krithe dolichodeira van den Bold, 1946, 959 MUC, 0.0–1.0 cm depth, adult female LV. 7–8, Krithe minima Coles, Whatley and Moguilevsky, 1994, 1004 MUC, 0.5–1.0 cm depth, adult female RV. Scale bar represents 1 mm. All lateral views.Yasuhara_Fig4.pdfHigh-resolution Fig. 5Fig. 5 Scanning electron microscopy (1, 3, 5, 7, 9) and composite stereomicroscope (2, 4, 6, 8, 10) images of ostracode species from the MUC samples. 1–2, Pseudocythere caudata Sars, 1866, 1115 MUC, 0.5–1.0 cm depth, adult female? LV. 3–4, Eucythere sp., 1035 MUC, 0.0–0.5 cm depth, adult RV. 5–6, Eucytherura delineata Whatley and Eynon, 1996, 1127 MUC, 0.0–0.5 cm depth, adult Male LV. 7–8, Muellerina abyssicola (Sars, 1866), 1127 MUC, 0.0–0.5 cm depth, adult female LV. 9–10, Thaerocythere crenulata (Sars, 1866), 1127 MUC, 0.0–0.5 cm depth, adult male? LV. Scale bars represent 1 mm. All lateral views.Yasuhara_Fig5.pdfHigh-resolution Fig. 6Fig. 6 Scanning electron microscopy (1, 3, 5, 7, 9) and composite stereomicroscope (2, 4, 6, 8, 10) images of ostracode species from the MUC samples. 1–2, Cytheropteron higashikawai Ishizaki, 1981, 1127 MUC, 0.0–0.5 cm depth, adult LV. 3–4, Cytheropteron carolinae s.l. Whatley and Coles, 1987, 1115 MUC, 0.5–1.0 cm depth, adult RV. 5–6, Cytheropteron perlaria Hao, 1988, 1127 MUC, 0.5–1.0 cm depth, adult female? LV. 7–8, Cytheropteron sp., 1127 MUC, 0.0–0.5 cm depth, adult LV. 9–10, Cytheropteron inflatum s.l. Brady, 1868, 1004 MUC, 0.0–0.5 cm depth, adult LV. Scale bars represent 1 mm. All lateral views.Yasuhara_Fig6.pdfHigh-resolution Fig. 7Fig. 7 Scanning electron microscopy (1, 3, 5, 7, 9, 11) and composite stereomicroscope (2, 4, 6, 8, 10, 12) images of ostracode species from the MUC samples. 1–2, Ambocythere sp., 959 MUC, 0.0–1.0 cm depth, adult female LV. 3–4, Buntonia textilis Bonaduce, Ciampo and Masoli, 1976, 1004 MUC, 0.0–0.5 cm depth, adult RV. 5–6, Echinocythereis echinata (Sars, 1866), 1004 MUC, 0.5–1.0 cm depth, adult RV. 7–8, Henryhowella asperrima (Reuss, 1850), 1175 MUC, 0.5–1.0 cm depth, adult Male LV. 9–10, Pennyella sp., 987 MUC, 0.5–1.0 cm depth, adult RV. 11–12, Pterygocythereis mucronata (Sars, 1866), 1035 MUC, 0.0–0.5 cm depth, adult LV. Scale bars represent 1 mm. All lateral views.Yasuhara_Fig7.pdfHigh-resolution Fig. 8Fig. 8 Scanning electron microscopy images of ostracode species from the EBS samples. 1, Cytherella robusta s.l. Colalongo and Pasini, 1980, 963 EBS, supranet, adult female? RV. 2, Macrocypris sp., 1032 EBS, supranet, adult LV. 3, Bradleya mesembrina Mazzini, 2005, 963 EBS, supranet, adult female? LV. 4, Legitimocythere acanthoderma (Brady, 1880), 963 EBS, supranet, adult male? LV. Scale bars represent 1 mm. All lateral views.Yasuhara_Fig8.pdf