Corresponding author: Huw Griffiths (
Academic editor: P. Stoev
Information regarding the echinoids in this dataset is based on the Agassiz Trawl (AGT) and epibenthic sledge (EBS) samples collected during the British Antarctic Survey cruise JR275 on the RRS James Clark Ross in the austral summer 2012. A total of 56 (1 at the South Orkneys and 55 in the Eastern Weddell Sea) Agassiz Trawl and 18 (2 at the South Orkneys and 16 in the Eastern Weddell Sea) epibenthic sledge deployments were performed at depths ranging from ~280 to ~2060 m. This presents a unique collection for the Antarctic benthic biodiversity assessment of an important group of benthic invertebrates. In total 487 specimens belonging to six families, 15 genera, and 22 morphospecies were collected. The species richness per station varied between one and six. Total species richness represents 27% of the 82 echinoid species ever recorded in the Southern Ocean (
Saucède T, Griffiths H, Moreau C, Jackson JA, Sands C, Downey R, Reed A, Mackenzie M, Geissler P, Linse K (2015) East Weddell Sea echinoids from the JR275 expedition. ZooKeys 504: 1–10. doi:
Sample locations for JR275 echinoid records.
This dataset represents 48 AGT and 8 EBS deployments: consisting of a single deployment at the South Orkneys at 279m; 15 at depths of ~400m; four at ~500m; 21 at ~600m; two at ~700m and four deployments at each of ~1000m, ~1500m and ~2000m deep (Figure
Sampling stations containing echinoid samples from JR275. AGT = Agassiz Trawl, EBS = Epibenthic sledge.
Station ID | Gear type | Start lat | End lat | Start long | End long | Min depth | Max depth | Date |
---|---|---|---|---|---|---|---|---|
8 | AGT | -60.6774 | -60.6775 | -44.01327 | -44.0144 | 279.04 | 281.57 | 12/02/2012 |
20 | AGT | -77.359 | -77.3576 | -35.37029 | -35.3642 | 654.34 | 654.35 | 19/02/2012 |
21 | AGT | -77.3548 | -77.3529 | -35.35131 | -35.3423 | 648.18 | 652.8 | 19/02/2012 |
23 | EBS | -77.3569 | -77.3579 | -35.36059 | -35.365 | 649.74 | 655.86 | 19/02/2012 |
25 | AGT | -76.3295 | -76.327 | -32.90046 | -32.8956 | 778.81 | 781.73 | 20/02/2012 |
26 | AGT | -76.321 | -76.3197 | -32.88435 | -32.8819 | 780.3 | 789.24 | 20/02/2012 |
29 | AGT | -76.1991 | -76.1982 | -31.86015 | -31.8556 | 575.95 | 578.97 | 20/02/2012 |
30 | AGT | -76.1956 | -76.1947 | -31.84258 | -31.8383 | 575.99 | 578.94 | 20/02/2012 |
31 | AGT | -76.1919 | -76.191 | -31.82427 | -31.8197 | 564.11 | 573 | 20/02/2012 |
33 | AGT | -76.0231 | -76.0222 | -26.99542 | -26.9909 | 605.21 | 610 | 21/02/2012 |
34 | AGT | -76.0196 | -76.0187 | -26.97793 | -26.9735 | 608 | 613 | 21/02/2012 |
38 | AGT | -76.1697 | -76.1685 | -27.79567 | -27.799 | 544.89 | 561 | 21/02/2012 |
39 | AGT | -76.1694 | -76.1689 | -27.79659 | -27.798 | 549.28 | 555.26 | 21/02/2012 |
40 | EBS | -76.1669 | -76.1657 | -27.8038 | -27.8073 | 533.05 | 550.82 | 21/02/2012 |
42 | AGT | -75.7612 | -75.7621 | -30.43723 | -30.4413 | 429.41 | 433.85 | 22/02/2012 |
43 | AGT | -75.7645 | -75.765 | -30.45297 | -30.4547 | 427.94 | 430 | 22/02/2012 |
44 | AGT | -75.767 | -75.7674 | -30.46317 | -30.4648 | 429.39 | 436.8 | 22/02/2012 |
47 | AGT | -75.7406 | -75.7418 | -31.23803 | -31.2413 | 578.94 | 584.88 | 22/02/2012 |
48 | AGT | -75.7451 | -75.7462 | -31.25064 | -31.2538 | 584.83 | 590.75 | 22/02/2012 |
49 | AGT | -75.7496 | -75.7508 | -31.2636 | -31.2668 | 583.36 | 584.94 | 22/02/2012 |
50 | EBS | -75.7433 | -75.7459 | -31.24615 | -31.2535 | 583.34 | 590.45 | 22/02/2012 |
52 | AGT | -75.2434 | -75.2447 | -30.24534 | -30.2472 | 418.73 | 419.21 | 23/02/2012 |
53 | AGT | -75.2478 | -75.2491 | -30.25152 | -30.2533 | 417.39 | 417.78 | 23/02/2012 |
54 | AGT | -75.2526 | -75.2539 | -30.25835 | -30.2602 | 418.7 | 419.11 | 23/02/2012 |
55 | AGT | -75.2567 | -75.258 | -30.26436 | -30.2662 | 418.38 | 418.61 | 23/02/2012 |
58 | AGT | -75.2631 | -75.2638 | -31.12627 | -31.131 | 604.29 | 607.13 | 23/02/2012 |
59 | AGT | -75.2658 | -75.2665 | -31.14481 | -31.1504 | 607.1 | 610.24 | 23/02/2012 |
60 | AGT | -75.2686 | -75.2692 | -31.16355 | -31.168 | 614.3 | 616.52 | 23/02/2012 |
63 | AGT | -75.0852 | -75.0866 | -32.21766 | -32.2177 | 609.48 | 612.28 | 24/02/2012 |
68 | AGT | -75.1767 | -75.1781 | -31.8702 | -31.869 | 655.78 | 676.11 | 24/02/2012 |
69 | AGT | -75.1754 | -75.1768 | -31.87114 | -31.87 | 654.87 | 657.46 | 24/02/2012 |
70 | AGT | -75.1743 | -75.1757 | -31.87206 | -31.8708 | 654.65 | 691.31 | 24/02/2012 |
75 | AGT | -74.37 | -74.3718 | -28.10797 | -28.1 | 2052.26 | 2053.91 | 26/02/2012 |
76 | AGT | -74.3797 | -74.3817 | -28.06634 | -28.059 | 2056.14 | 2058.19 | 26/02/2012 |
77 | AGT | -74.3886 | -74.3904 | -28.1561 | -28.1482 | 2006.54 | 2011.16 | 26/02/2012 |
78 | EBS | -74.4047 | -74.4065 | -28.08486 | -28.0769 | 2019.49 | 2026.16 | 26/02/2012 |
80 | AGT | -74.5202 | -74.5175 | -28.75306 | -28.7512 | 1537.72 | 1545.99 | 28/02/2012 |
81 | AGT | -74.5084 | -74.5057 | -28.74527 | -28.7436 | 1558.28 | 1570.08 | 28/02/2012 |
82 | AGT | -74.4962 | -74.4931 | -28.73726 | -28.7352 | 1580.27 | 1595.46 | 28/02/2012 |
83 | EBS | -74.4853 | -74.4846 | -28.77472 | -28.7847 | 1577.88 | 1588.23 | 28/02/2012 |
85 | AGT | -74.6741 | -74.675 | -29.42462 | -29.4344 | 586.74 | 604.49 | 29/02/2012 |
86 | AGT | -74.6769 | -74.6766 | -29.45447 | -29.4507 | 573.42 | 580.99 | 29/02/2012 |
88 | AGT | -74.6747 | -74.6745 | -29.43061 | -29.4284 | 592.71 | 602.27 | 29/02/2012 |
89 | EBS | -74.6716 | -74.6706 | -29.39886 | -29.3883 | 639.32 | 657.44 | 29/02/2012 |
91 | AGT | -74.7067 | -74.7054 | -29.50822 | -29.5066 | 401.67 | 410 | 29/02/2012 |
92 | AGT | -74.7013 | -74.7009 | -29.50091 | -29.5002 | 427.17 | 428.55 | 29/02/2012 |
93 | AGT | -74.6982 | -74.6975 | -29.49652 | -29.4956 | 439.76 | 450.09 | 29/02/2012 |
94 | EBS | -74.6919 | -74.6893 | -29.48786 | -29.4842 | 476.94 | 494.03 | 29/02/2012 |
96 | AGT | -74.6252 | -74.6268 | -29.05155 | -29.0429 | 1018.91 | 1028.48 | 01/03/2012 |
97 | AGT | -74.6304 | -74.6319 | -29.0236 | -29.0151 | 985.75 | 1010.63 | 01/03/2012 |
99 | EBS | -74.6341 | -74.6357 | -29.00812 | -28.9996 | 958.98 | 986.19 | 01/03/2012 |
101 | AGT | -75.2427 | -75.2437 | -29.00356 | -29.0072 | 391.66 | 398.3 | 04/03/2012 |
102 | AGT | -75.246 | -75.2471 | -29.01541 | -29.019 | 392.77 | 396.83 | 04/03/2012 |
103 | AGT | -75.2495 | -75.2506 | -29.02708 | -29.0304 | 390.17 | 392.2 | 04/03/2012 |
106 | AGT | -75.2389 | -75.2397 | -27.84859 | -27.853 | 413.67 | 415.71 | 04/03/2012 |
108 | AGT | -75.244 | -75.2448 | -27.87707 | -27.8816 | 417.56 | 424.41 | 04/03/2012 |
The AGT had an inner mesh size of 1 cm and a mouth width of 2 m. The EBS consisted of an epi-(below) and a supra-(above) net. Each of these nets has a mesh size of 500µm and an opening of 100×33cm. The cod end of both nets is equipped with net-buckets containing a 300µm mesh window (
Presence only matrix of echinoid species from JR275.
Station Number | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Family | Genus | Species | 8 | 20 | 21 | 23 | 25 | 26 | 29 | 30 | 31 | 33 | 34 | 38 | 39 | 40 | 42 | 43 | 44 | 47 | 48 | 49 | 50 | 52 | 53 | 54 | 55 | 58 | 59 | 60 | 63 | 68 | 69 | 70 | 75 | 76 | 77 | 78 | 80 | 81 | 82 | 83 | 85 | 86 | 88 | 89 | 91 | 92 | 93 | 94 | 96 | 97 | 99 | 101 | 102 | 103 | 106 | 108 |
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This dataset presents species occurrences and species richness of the individual AGT and EBS deployments.
Agassiz trawl sampling in the Weddell Sea
Once on board, the samples were photographed as total catch and then hand-sorted into groups varying from Phylum to species level collections. Representatives of many taxa were photographed in detail. The wet‐mass (biomass) of the different taxa was assessed by using calibrated scales (with accuracy and resolution of 0.001 kg). Samples were fixed in 96% undenatured and precooled (at -20°C) ethanol (Linse 2008) and kept for a minimum of 48 hours in a -20°C freezer, with rotation of containers to ensure full preservation of material.
Epibenthic sledge sampling in the Weddell Sea
Once on the deck, the content of the samplers from the first deployment was immediately fixed in 96% undenatured and precooled (at -20°C) ethanol and kept for a minimum of 48 hours in a -20°C freezer.
The taxonomic identification was performed in the British Antarctic Survey laboratory using a stereomicroscope.