Sahling, Heiko; Galkin, Sergey V; Salyuk, Anatoly; Greinert, Jens; Foerstel, Hilmar; Piepenburg, Dieter; Suess, Erwin (2003): (Table 3) Stable isotope composition of sof t tissues of specimens from the Sea of Okhotsk [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.769751, Supplement to: Sahling, H et al. (2003): Depth-related structure and ecological significance of cold-seep communities - A case study from the Sea of Okhotsk. Deep Sea Research Part I: Oceanographic Research Papers, 50(12), 1391-1409, https://doi.org/10.1016/j.dsr.2003.08.004
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
We discovered and investigated several cold-seep sites in four depth zones of the Sea of Okhotsk off Northeast Sakhalin: outer shelf (160–250 m), upper slope (250–450 m), intermediate slope (450–800 m), and Derugin Basin (1450–1600 m). Active seepage of free methane or methane-rich fluids was detected in each zone. However, seabed photography and sampling revealed that the number of chemoautotrophic species decreases dramatically with decreasing water depth. At greatest depths in the Derugin Basin, the seeps were inhabited by bacterial mats and bivalves of the families Vesicomyidae (Calyptogena aff. pacifica, C. rectimargo, Archivesica sp.), Solemyidae (Acharax sp.) and Thyasiridae (Conchocele bisecta). In addition, pogonophoran tubeworms of the family Sclerolinidae were found in barite edifices. At the shallowest sites, on the shelf at 160 m, the seeps lack chemoautotrophic macrofauna; their locations were indicated only by the patchy occurrence of bacterial mats.
Typical seep-endemic metazoans with chemosynthetic symbionts were confined to seep sites at depths below 370 m. A comparative analysis of the structure of seep and background communities suggests that differences in predation pressure may be an important determinant of this pattern. The abundance of predators such as carnivorous brachyurans and asteroids, which can invade seeps from adjacent habitats and efficiently prey on sessile seep bivalves, decreased very pronouncedly with depth. We conclude from the obvious correlation with the conspicuous pattern in the distribution of seep assemblages that, on the shelf and at the upper slope, predator pressure may be high enough to effectively impede any successful settlement of viable populations of seep-endemic metazoans. However, there was also evidence that other depth-related factors, such as bottom-water current, sedimentary regimes, oxygen concentrations and the supply of suitable settling substrates, may additionally regulate the distribution of seep fauna in the area.
As a consequence of the pronounced pattern in the distribution of seep communities, their ecological significance as food sources of surrounding background fauna increased with water depth. Isotopic analyses suggest that in the Derugin Basin seep colonists feed on chemoautotrophic seep organisms, either directly or by preying on metazoans with chemosynthetic symbionts. In contrast, seep organisms apparently do not contribute to the nutrition of the adjacent background fauna on the shelf and at the slope. In this area, elevated epifaunal abundances at seep sites were caused primarily by the availability of suitable settling substrates rather than by an enrichment of food supply.
Project(s):
Coverage:
Median Latitude: 53.282753 * Median Longitude: 145.878710 * South-bound Latitude: 48.309500 * West-bound Longitude: 143.981283 * North-bound Latitude: 54.445683 * East-bound Longitude: 151.824750
Date/Time Start: 1998-08-16T05:30:00 * Date/Time End: 1999-09-14T11:26:00
Minimum Elevation: -2500.0 m * Maximum Elevation: -382.0 m
Event(s):
GE99-25-1 * Latitude: 54.445683 * Longitude: 144.080333 * Date/Time Start: 1999-09-14T01:06:00 * Date/Time End: 1999-09-14T02:04:00 * Elevation: -700.0 m * Location: Obzhirov flare * Campaign: GE99/KOMEX_VI * Basis: Marshal Gelovany * Method/Device: Trawl net (TRAWL) * Comment: 70 kg/vent fauna (living specimens), big clams
GE99-28-1 * Latitude: 54.442933 * Longitude: 144.081283 * Date/Time Start: 1999-09-14T10:28:00 * Date/Time End: 1999-09-14T11:26:00 * Elevation: -700.0 m * Location: Obzhirov flare * Campaign: GE99/KOMEX_VI * Basis: Marshal Gelovany * Method/Device: Trawl net (TRAWL) * Comment: /
LV28-16-2 * Latitude: 54.377717 * Longitude: 143.984050 * Date/Time: 1998-08-16T05:30:00 * Elevation: -382.0 m * Location: Sea of Okhotsk * Campaign: LV28 (KOMEX I) * Basis: Akademik M.A. Lavrentiev * Method/Device: Trawl net (TRAWL) * Comment: North Sakhalin Shelf and Slope/full/carbonate concretions, clam shells
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Taxon/taxa | Taxa | Sahling, Heiko | |||
| 3 | Species | Species | Sahling, Heiko | |||
| 4 | Area/locality | Area | Sahling, Heiko | |||
| 5 | Material | Material | Sahling, Heiko | Tissue | ||
| 6 | δ13C, organic carbon | δ13C Corg | ‰ PDB | Sahling, Heiko | Mass spectrometry | |
| 7 | δ15N, gas | δ15N-N2 | ‰ air | Sahling, Heiko | Mass spectrometry |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
264 data points
Data
| 1 Event | 2 Taxa | 3 Species | 4 Area | 5 Material | 6 δ13C Corg [‰ PDB] | 7 δ15N-N2 [‰ air] |
|---|---|---|---|---|---|---|
| GE99-25-1 | Bivalvia | Calyptogena sp. | Intermediate slope off Sakhalin | Mantle | 37.9 | 3.300 |
| GE99-25-1 | Bivalvia | Conchocele bisecta | Intermediate slope off Sakhalin | Mantle | 33.3 | 4.200 |
| GE99-28-1 | Bivalvia | Calyptogena sp. | Intermediate slope off Sakhalin | Rest of body | 38.1 | 3.300 |
| GE99-28-1 | Bivalvia | Calyptogena sp. | Intermediate slope off Sakhalin | Mantle | 38.6 | 4.000 |
| LV28-16-2 | Actiniaria | sp.1 | Upper slope off Sakhalin | Part of body wall | 11.9 | 10.700 |
| LV28-16-2 | Polychaeta | Nepthys paradoxa | Upper slope off Sakhalin | Part of whole body | 19.6 | 15.700 |
| LV28-16-2 | Pogonophora | Siboglinum plumosum | Upper slope off Sakhalin | Tube fragment and tissue | 43.4 | 6.400 |
| LV28-16-2 | Bivalvia | Liocyma fluctuosa | Upper slope off Sakhalin | Intestine | 19.4 | 8.900 |
| LV28-16-2 | Bivalvia | Liocyma fluctuosa | Upper slope off Sakhalin | Foot and mantle | 17.7 | 10.200 |
| LV28-16-2 | Bivalvia | Liocyma fluctuosa | Upper slope off Sakhalin | Intestine | 18.1 | 8.100 |
| LV28-16-2 | Bivalvia | Acharax sp. | Upper slope off Sakhalin | Gills | 36.1 | 1.000 |
| LV28-16-2 | Bivalvia | Acharax sp. | Upper slope off Sakhalin | Foot | 34.7 | 0.100 |
| LV28-16-2 | Bivalvia | Acharax sp. | Upper slope off Sakhalin | Rest of body | 35.2 | 1.000 |
| LV28-16-2 | Gastropoda | Pseudoliomesus nassula | Upper slope off Sakhalin | Soft body | 18.3 | 15.200 |
| LV28-16-2 | Gastropoda | Antiplanes sanctiioannis | Upper slope off Sakhalin | Soft body | 18.3 | 15.300 |
| LV28-16-2 | Amphipoda | mainly Byblis pearevi | Upper slope off Sakhalin | About 100 specimens | 19.0 | 9.500 |
| LV28-16-2 | Decapoda | Chionoecetes opilio | Upper slope off Sakhalin | Gills of three specimens | 19.0 | 11.600 |
| LV28-16-2 | Decapoda | Chionoecetes opilio | Upper slope off Sakhalin | Muscels of three specimens | 18.2 | 13.300 |
| LV28-16-2 | Decapoda | Chionoecetes opilio | Upper slope off Sakhalin | Chitin of carapace | 11.6 | 9.700 |
| LV28-16-2 | Decapoda | Chionoecetes opilio | Upper slope off Sakhalin | Intestine of three specimens | 19.5 | 9.800 |
| LV28-16-2 | Pisces | Lycodes sp. | Upper slope off Sakhalin | Muscle | 22.7 | 12.000 |
| LV28-30-2 | Pogonophora | Siboglinum plumosum | Upper slope off Sakhalin | Tube and soft tissue | 40.1 | 5.200 |
| LV28-30-2 | Pogonophora | Siboglinum plumosum | Upper slope off Sakhalin | Tube and soft tissue | 39.0 | 4.200 |
| LV28-30-3 | Amphipoda | Byblis pearevi | Upper slope off Sakhalin | Three specimens | 20.0 | 12.300 |
| LV28-30-4 | Pogonophora | Siboglinum plumosum | Upper slope off Sakhalin | 10 tube fragments | 39.6 | 7.000 |
| LV28-30-4 | Amphipoda | Byblis pearevi | Upper slope off Sakhalin | One specimen | 19.5 | 9.000 |
| LV28-30-5 | Bivalvia | Macoma calcarea | Upper slope off Sakhalin | Gill | 15.2 | 7.300 |
| LV28-30-5 | Bivalvia | Macoma calcarea | Upper slope off Sakhalin | Foot | 16.0 | 9.100 |
| LV28-30-5 | Bivalvia | Macoma calcarea | Upper slope off Sakhalin | Rest of body | 18.0 | 9.200 |
| LV28-36-1 | Bivalvia | Archivesica sp. | Derugin Basin | Gill | 37.7 | 0.100 |
| LV28-36-1 | Bivalvia | Archivesica sp. | Derugin Basin | Foot | 37.3 | 1.400 |
| LV28-36-1 | Bivalvia | Archivesica sp. | Derugin Basin | Rest of body | 36.0 | 1.700 |
| LV28-38-1 | Demospongia | sp.1 | Derugin Basin | Part of whole body | 25.6 | 18.700 |
| LV28-38-1 | Hydrozoa | sp.1 | Derugin Basin | Part of whole body | 24.6 | 10.900 |
| LV28-38-1 | Pogonophora | Sclerolinidae | Derugin Basin | Several tubes and tissues | 38.0 | 1.200 |
| LV28-38-1 | Pogonophora | Sclerolinidae | Derugin Basin | Several tubes and tissues | 30.5 | 0.800 |
| LV28-38-1 | Pogonophora | Sclerolinidae | Derugin Basin | Several tubes and tissues | 34.8 | 0.800 |
| LV28-38-1 | Caridae | sp. | Derugin Basin | One specimens | 21.4 | 12.000 |
| LV28-38-1 | Caridae | sp. | Derugin Basin | Soft tissue | 21.1 | 14.800 |
| LV28-38-1 | Caridae | Munidopsis beringiana | Derugin Basin | Three legs | 22.4 | 6.200 |
| LV28-47-1 | Demospongia | sp.2 | Kuril Basin | Part of whole body | 17.8 | 20.700 |
| LV28-47-1 | Demospongia | sp.2 | Kuril Basin | Part of whole body | 18.1 | 20.600 |
| LV28-47-1 | Hydrozoa | Grammaria stentor | Kuril Basin | Part of whole body | 13.0 | 15.200 |
| LV28-47-1 | Caridae | Munidopsis beringiana | Kuril Basin | One leg | 14.0 | 14.600 |