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62 results for “NE Pacific”
Sedimentation Event Sensor images (26 October 2015–18 June 2015, 3900 m deep at Station M, NE Pacific)
<p>Images taken by the Sedimentation Event Sensor (26 October 2015–18 June 2015, 3900 m deep at Station M, NE Pacific) . See <a href="https://doi.org/10.1016/j.dsr2.2020.104763">https://doi.org/10.1016/j.dsr2.2020.104763</a> for details</p> <p> </p> <p>Huffard, C. L., Durkin, C. A., Wilson, S. E., McGill, P. R., Henthorn, R., & Smith Jr, K. L. (2020). Temporally-resolved mechanisms of deep-ocean particle flux and impact on the seafloor carbon cycle in the northeast Pacific. <em>Deep Sea Research Part II: Topical Studies in Oceanography</em>, <em>173</em>, 104763.</p>
Abyssal NE Pacific Seafloor Megafauna Dataset
<p>Benthic megafauna invertebrate (animals > 10 mm) observations from seabed imagery data collected across the Clarion Clipperton Zone, in the NE Pacific abyss: 53512 specimens classified in 400+ morphotypes (13 Phyla) based on the APSMA catalogue (see <a href="https://zenodo.org/record/7765164">https://zenodo.org/record/7765164</a>).</p> <p>Dataset used to develop (please cite as): Simon-Lledó, et al. (2023). Carbonate compensation depth drives abyssal biogeography in the northeast Pacific. <em>Nature Ecology & Evolution</em>; doi:10.1038/s41559-023-02122-9</p>
Station M time series study (NE Pacific) CTD data (cruises 2006-2022, surface to 4000 m depth)
<p>These datasets are from sensors mounted on remotely operated vehicle deployments (ROVs Tiburon and Doc Ricketts) to Station M (approx 4000 m) in the NE Pacific. Collection dates were from 2006 to 2022 as the ROV operated from the surface to the abyssal seafloor.</p> <p>The CTD was a Seabird SBE 21, Oxygen came from a pair of Seabird SBE 43s, Beam transmission from a Wetlabs C-Star, 25cm path, 720nm(red) </p> <div>21 and 43s were calibrated annually at Seabird, and the 43s were corrected a couple of times a year with bottle titration. </div> <div> </div> <div>Units:</div> <div> <table> <tbody> <tr> <td>depth (meters)</td> </tr> <tr> <td>heading (degrees)</td> </tr> <tr> <td>temperature (degrees C)</td> </tr> <tr> <td>salinity (unitless)</td> </tr> <tr> <td>oxygen (ml/l)</td> </tr> </tbody> </table> </div>
Habitat heterogeneity over multiple scales supports dense and diverse megafaunal communities on a NE Pacific ridge
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FIGURE 7. Spiophanes uschakowi Zachs, 1933 in Spiophanes norrisi sp. nov. (Polychaeta: Spionidae) — a new species from the NE Pacific coast, separated from the Spiophanes bombyx complex based on both morphological and genetic studies
FIGURE 7. Spiophanes uschakowi Zachs, 1933: A. Anterior end, dorsal view. B. Chaetiger 5–12, lateral view; arrow indicates simple vertical opening of glandular organ in chaetiger 11. C. Neuropodial hooks with reduced hood from chaetiger 19. — All Syntype, RAS 1/25826. Scale: A, B 0.5 mm; C 10 µm.
FIGURE 8 in Spiophanes norrisi sp. nov. (Polychaeta: Spionidae) — a new species from the NE Pacific coast, separated from the Spiophanes bombyx complex based on both morphological and genetic studies
FIGURE 8. First presence of neuropodial hooks in relation to body width on chaetiger 4 in both Spiophanes bombyx and S. norrisi sp. nov.
FIGURE 5 in Spiophanes norrisi sp. nov. (Polychaeta: Spionidae) — a new species from the NE Pacific coast, separated from the Spiophanes bombyx complex based on both morphological and genetic studies
FIGURE 5. Spiophanes norrisi sp. nov.: A. Anterior end, dorsal view; methyl green stained nuchal and dorsal ciliated organs. B. Anterior end, lateral view; methyl green stained openings of glandular organs on chaetigers 5, 7, and 8; arrow indicates simple vertical opening of glandular organ in chaetiger 14. C–F. Parapodium from chaetiger 2, 5, 11, and 19, all anterior view. G. Neuropodial hooks with reduced hood from chaetiger 19. H. Neuropodial chaeta from chaetiger 5. I. Sabre chaeta from chaetiger 11. K. Neuropodial chaeta from chaetiger 2. — B = LACM–AHF V. 1962–50 (Paratype); all others LACM–AHF V5102. Scale: A, B 0.5 mm, C–F 0.1 mm. G–K 5 µm.
FIGURE 2 in Spiophanes norrisi sp. nov. (Polychaeta: Spionidae) — a new species from the NE Pacific coast, separated from the Spiophanes bombyx complex based on both morphological and genetic studies
FIGURE 2. Spiophanes bombyx (Claparède, 1870): A. Anterior end, dorsal view. B. Chaetigers 9–15 with dorsal ciliated organs and dorsal ciliated crests, dorsal view. — Specimens from the North Sea, German Bight, depth 24 m, leg. K. Meißner, Jul 2008. Scale: in µm.
FIGURE 10 in Spiophanes norrisi sp. nov. (Polychaeta: Spionidae) — a new species from the NE Pacific coast, separated from the Spiophanes bombyx complex based on both morphological and genetic studies
FIGURE 10. Phylogenetic relationships among five Spiophanes species based on partial mitochondrial and nuclear sequences. A. Maximum–likelihood bootstrap consensus tree (1000 replicates) based on COI haplotypes. Numbers above branches are likelihood bootstrap values; numbers below branches are Bayesian posterior probabilities and parsimony consensus percentages. Trees are rooted using sequences of Prionospio as outgroup (P. steenstrupi EU835668; Prionospio sp.1 EU835667). B. Maximum–parsimony bootstrap consensus tree (1000 replicates) based on 18S haplotypes. Numbers above branches are parsimony bootstrap values; numbers below branches are Bayesian posterior probabilities and likelihood bootstrap percentages. Trees are rooted using sequences of Prionospio as outgroup (P. ehlersi EU340095; P. dubia EU418859).
FIGURE 3 in Spiophanes norrisi sp. nov. (Polychaeta: Spionidae) — a new species from the NE Pacific coast, separated from the Spiophanes bombyx complex based on both morphological and genetic studies
FIGURE 3. Spiophanes bombyx (Claparède, 1870): Chaetiger 10–18, dorsal view, methyl green stained nuchal organs. — Specimen from Turkey, Iskenderum Bay, sublittoral, leg. E. Dagli, Sep 2005. Scale: 0.5 mm.
FIGURE 4 in Spiophanes norrisi sp. nov. (Polychaeta: Spionidae) — a new species from the NE Pacific coast, separated from the Spiophanes bombyx complex based on both morphological and genetic studies
FIGURE 4. Spiophanes bombyx (Claparède, 1870): A. Chaetigers 4–9 with openings of glandular organs on chaetigers 5, 7, 8, 9, lateral view. B. Neuropodial hooks from chaetiger 16, dorsal apical view. C. Chaetigers 9–11, lateral view. D. Posterior end with stout curved notochaeta, dorsal view. — A, B, D specimens from the North Sea, German Bight, depth 24 m, leg. K. Meißner, Jul 2008; C specimen from the Gulf of Naples, depth 20 m, leg. P. Lanera, March 2005. Scale: in µm.
FIGURE 9 in Spiophanes norrisi sp. nov. (Polychaeta: Spionidae) — a new species from the NE Pacific coast, separated from the Spiophanes bombyx complex based on both morphological and genetic studies
FIGURE 9. Number of neuropodial hooks in relation to body width on chaetiger 4 in both Spiophanes bombyx and S. norrisi sp. nov.
FIGURE 8 in New species of Hebefustis Siebenaller & Hessler 1977 (Isopoda, Asellota, Nannoniscidae) from the Clarion Clipperton Fracture Zone (equatorial NE Pacific)
FIGURE 8. Hebefustis vecino sp. n.; A–E, holotype female (ZMH-K-43954); A, habitus, dorsal view. B, antennula, antenna podomere articles 1–4; C, operculum; D, pleotelson, ventral view. E, uropod. Scale bar: A, D = 500 Μm, B–C, E = 250 µm.
FIGURE 9 in New species of Hebefustis Siebenaller & Hessler 1977 (Isopoda, Asellota, Nannoniscidae) from the Clarion Clipperton Fracture Zone (equatorial NE Pacific)
FIGURE 9. Hebefustis vecino sp. n.; A–D, holotype female (ZMH-K-43954); A, habitus, dorsal view. B, maxilliped. C–E, pereopods I–III, detail: dorsal and ventral claw. Scale bar: A = 500 Μm, B–E = 250 µm.
FIGURE 7 in New species of Hebefustis Siebenaller & Hessler 1977 (Isopoda, Asellota, Nannoniscidae) from the Clarion Clipperton Fracture Zone (equatorial NE Pacific)
FIGURE 7. Hebefustis juansenii sp. n.; A–H paratype male (ZMH–K–43952); A, pereopod V. B, pereopod VII. C–G, pleopods 1–5. H, uropod. Scale bar: A–H = 100 Μm.
FIGURE 6 in New species of Hebefustis Siebenaller & Hessler 1977 (Isopoda, Asellota, Nannoniscidae) from the Clarion Clipperton Fracture Zone (equatorial NE Pacific)
FIGURE 6. Hebefustis juansenii sp. n.; A–C paratype male (ZMH–K–43952); A, pereopod I, detail: dorsal and ventral claw. B, pereopod II. C, pereopod III. Scale bar: A–C = 100 Μm.
FIGURE 5 in New species of Hebefustis Siebenaller & Hessler 1977 (Isopoda, Asellota, Nannoniscidae) from the Clarion Clipperton Fracture Zone (equatorial NE Pacific)
FIGURE 5. Hebefustis juansenii sp. n.; A–E paratype male (ZMH–K–43952); A, habitus, dorsal view. B, left mandible. C, right mandible. D, maxilliped. E, maxillula. F, maxilla, detail: inner endite. Scale bar: A = 500 Μm, B–F = 100 Μm.
FIGURE 4 in New species of Hebefustis Siebenaller & Hessler 1977 (Isopoda, Asellota, Nannoniscidae) from the Clarion Clipperton Fracture Zone (equatorial NE Pacific)
FIGURE 4. Hebefustis juansenii sp. n.; A–D paratype male (ZMH–K–43952); A, habitus, dorsal view. B, antenna. C, antennula. D, pleotelson, ventral view. Scale bar: A = 500 Μm, B–C = 100 Μm; D = 250 Μm.
FIGURE 3 in New species of Hebefustis Siebenaller & Hessler 1977 (Isopoda, Asellota, Nannoniscidae) from the Clarion Clipperton Fracture Zone (equatorial NE Pacific)
FIGURE 3. Hebefustis juansenii sp. n.; A–F, holotype female (ZMH–K–43951); A, habitus, dorsal view. B, maxilliped. C, antennula. D–E, pereopods I–II, detail: dorsal and ventral claw. F, antenna. Scale bar: A = 500 µm, B–F = 250 Μm.
FIGURE 1 in New species of Hebefustis Siebenaller & Hessler 1977 (Isopoda, Asellota, Nannoniscidae) from the Clarion Clipperton Fracture Zone (equatorial NE Pacific)
FIGURE 1. Global distribution of Hebefustis species; 1) H. alleni; 2) H. clareolithis; 3) H. cornutus; 4) H. dispar; 5) H. juansenii sp. n., H. vecino sp. n.; 6) H. hexadentium; 7) H. hirsutus; 8) H. mollicellus; 9) H. par; 10) H. primitivus; 11) H. robustus; 12) H. vafer; 13) H. vitjazi. Dashed lines indicate the tropics, solid line: equator (map by H.J. Griffiths)
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OpenNeuro
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