Preface The expedition ARK XIX/3 with the German icebreaking RV ...

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Preliminary results Biodiversity survey Trap operations (Tab. C13-1) allowed collecting scavenger crustaceans from Hausgarten area (7 amphipod species, 1 isopod species) and, during the previous leg ARK/XIX3b, from HMMV (6 amphipod species) (Tab. C13-2). In addition, preliminary sorting of several GKG samples (from stations 409, 417, 465, 468, taken from depths of 1549 to 5219 m) provided some species of Eusiridae, Lysianassidae and Phoxocephalidae as well as some Tanaidacea. One Eusirid species was not identifiable from current keys and may be new to science. Tab. C13-1: Results of trap operations. Station Location Gear Depth Duration Amphipoda Isopoda Gastropoda m h spp (ind) spp (ind) spp (ind) 326-1 HMMV Victor 1290 14.5 6 ( ? ) 412-1 HG Victor 2464 68+14 2 (32) 1 (21) 1 (2) 423-1 HG Lander 2461 29 7 (436) 448-1 HG Victor 2342 43 5 (244) 1 (162) Total 13 (712+) 1 (183) 1 (2) Tab. C13-2: List of crustacean species collected in traps at “Hausgarten” and HMMV. Species Stations Amphipoda Lysianassoidea Anonyx nugax 326-1 Boeckosimus sp.1 326-1 Boeckosimus sp.2 326-1, 423 Eurythenes gryllus 412, 423, 448 Orchomenopsis sp.1 326-1 Paracallisoma sp.1 423, 448 Paracallisoma sp.2 448 Tmetonyx norbiensis 423 - 283 -
Species Stations Tmetonyx sp.1 326-1, 423 Tmetonyx sp.2 326-1 Tryphosella abyssalis 423 Tryphosella sp.3 412, 423, 448 Stegocephalidae Gen. sp.1 448 Isopoda Idoteidae Saduria cf. sabini 412, 448 Molecular phylogeny and phylogeography of selected deep sea amphipod taxa Specimens devoted to molecular analyses were put in absolute ethanol the soonest as possible after sampling, preferably live when possible, in order to avoid possible DNA degradation by enzymatic activity. As a rule, a very little part of each specimen selected for molecular analyses was taken (usually the pereopod 6, as a whole or a part of it, depending of the size of the animal). The amputated animals were preserved in absolute ethanol as voucher specimens and for future morphological studies. DNA extractions and purifications were carried out by means of QIAamp DNA Mini Kit (Qiagen), from selected specimens of a total of at least 3 families, 7 genera and possibly 10 different species, of which one could be a species new for science. In addition, DNA was extracted from the isopod Saduria cf. sabini, abundantly caught in some baited traps. The biological material consisted mostly of representatives of the superfamily Lysianassoidea, of which at least 5 genera (Eurythenes, Boeckosimus, Paracallisoma, Tmetonyx, and Tryphosella) and 8 species were obtained during ARK XIX/3c cruise. The remaining material consisted of a few specimens of related amphipod families (Stegocephalidae, Eusiridae), and was processed for the sake of outgroup use in future molecular phylogenetic reconstructions. All this material will be processed in the laboratory, in order to obtain DNA fragment sequences of at least 18S, COI and possibly - 284 -
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Preface The expedition ARK XIX/3 wi
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B. 1 Cruise leg ARK XIX/3b: An intr
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The ARK XIX/3 expedition A. 1 Itine
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positioning and navigation of the "
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was followed to obtain video materi
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On Friday morning the 20 th of June
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Fig. A1-2: The working area of the
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"Polarstern" (actual air temperatur
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6000" was still at depth "Polarster
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aseline navigation antennae which a
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Fig. A1-3: Entire cruise track of R
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At end of the leg pressure rising b
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The temperatures during the cruise
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Most frequent wind direction was so
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A. 3.1 High resolution seabed mappi
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On the other hand, the accuracy of
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The sampling campaign was also unde
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Hydrosweep DS2 is installed onboard
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Fig. A4.2-2: Normalized backscatter
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In addition to the micro bathymetry
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ackscatter value of -37.0dB, -38.9d
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athymetry and angular backscatter d
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A. 4.3 Sedimentary and hydrodynamic
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glacial periods. There is also evid
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Fig. A4.3.2-2: Visualisation of dif
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It seems that all the mounds along
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Visible calcareous fauna removed (b
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Fig. A4.3.3-2 Location of SAMS Phot
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Box Core Sample Log Sheet Station N
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A. 4.3.4 Influence of mound topogra
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A. 4.3.5 Photo lander deployment on
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- UMI data logger controlling a tra
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Fig. A4.3.5-3. Close-up view of the
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Lineated features are present NE of
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CARACOLE Cruise Report 30/07/2001 (
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intermediate nepheloid layers (Dick
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Fig. A4.4.1-2. Location of main stu
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A. 4.4.3 Biogeoprocesses along the
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in the database with the exact posi
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The areas with significant benthic
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predators and strong bottom current
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faunal distribution. Palaentologica
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ocks predate the last glaciation, s
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A. 4.4.6 Biological and geological
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Hovland M, Croker PF, Martin M (199
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Live fauna Sediments Live fauna and
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sites can subsequently be transport
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4) The NSOW has similar water mass
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0 100 200 300 400 500 600 700 800 P
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A. 4.8 Deep water coral ecology and
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and video observations made. On ret
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Fig. A4.8.2-2: This orange, planar
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Fig. A4.8.2-4: Feather-shaped alcyo
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Fig. A4.8.2-7: Top left) Yellow alc
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scour or demersal trawling. The gro
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survey at frequencies of 38, 70, 12
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"Belgica mounds" - Porcupine Seabig
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"Twin mounds" - Porcupine Bank 14°
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corals were alive, relatively abund
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Network Setup for Tests The setup f
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are only initial testings and much
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pressure produced as a consequence
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surrounded by elevated sediment fea
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B. 2 Microbathymetry on ROV "Victor
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Pitch correction Due to assembling
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Maps Complete area Håkon Mosby Mud
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B. 3 Geochemistry, geophysics and s
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Heat Flow HMMV 2m # # # # # # # # #
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Lat_dec. Lon_dec Name k T_0m PS64/s
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Temperature / Gravity Corer # GC9 #
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Table B3.2-1: Technical specificati
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Sound velocity: As the cores all co
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Fig. B3.3-1: Display of a 4 km long
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sediment cores varies between 166 t
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Fig. B3.4-1b: Lithological descript
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Fig. B3.4-1d: Lithological descript
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Fig. B3.4-1f: Lithological descript
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hydrotroilite and gas hydrate, this
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As an example, a echo sounder image
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B. 5 Biological investigations at t
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- How much methane is oxidized aero
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profiler). Bottom water samples hav
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the water column was measured using
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1 kg of tubeworms in wet weight. Th
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B. 5.2 Microscale analysis of the s
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Laboratory measurements Central sit
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O2, CO3-- (mM) Beggiatoa mats, 30/0
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Photograph of the sulfide oxidising
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Central area No measurements could
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the temperature profile showed adve
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B. 5.3 Methane in gas hydrate beari
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The deployments covered 3 (5) diffe
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flows at the Håkon Mosby Mud Volca
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The quality of the mosaics depends
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[2] Vincent AG, Pessel N, Borgetto
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References Milkov, A., Vogt, P., Ch
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ROV "Victor 6000" The ROV "Victor 6
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has spent in organising the coring
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A multiple corer was used to retrie
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Page 253 and 254: material via the Transpolar Drift t
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Page 261 and 262: C. 6 Debris on the seafloor at “H
Page 263 and 264: Results A summary of the results is
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Station Date Time PositionLat Posit
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E. Participating institutes / compa
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Acronym Participants iSiTEC GmbH IS
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F. Participants F. 1 Participants A
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F. 2 Participants ARK XIX/3b Armand
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F. 3 Participants ARK XIX/3c Bauerf
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Preface The expedition ARK XIX/3 with the German icebreaking RV ...

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