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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2015
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| Online Access: | https://doi.org/10.1594/PANGAEA.846306 |
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| author | Hauquier, Freija Durán Suja, Laura Gutt, Julian Veit-Köhler, Gritta Vanreusel, Ann |
| author_facet | Hauquier, Freija Durán Suja, Laura Gutt, Julian Veit-Köhler, Gritta Vanreusel, Ann |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Marine free-living nematode communities were studied at similar depths (~500m) at two sides of the Antarctic Peninsula, characterised by different environmental and oceanographic conditions. At the Weddell Sea side, benthic communities are influenced by cold deep-water formation and seasonal sea-ice conditions, whereas the Drake Passage side experiences milder oceanic conditions and strong dynamics of the Antarctic Circumpolar Current. Surface primary productivity contrasted with observed benthic pigment patterns and varied according to the area studied: chlorophyll a concentrations (as a proxy for primary production) were high in the Weddell Sea sediments, but low in the surface waters above; this pattern was reversed in the Drake Passage. Differences between areas were largely mirrored by the nematode communities: nematode densities peaked in Weddell stations and showed deeper vertical occurrence in the sediment, associated with deeper penetration of chlorophyll a. Generic composition did not differ markedly between both areas, but rather showed distinct community shifts with depth in the sediment. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_846306 |
| institution | PANGAEA |
| language | en |
| publishDate | 2015 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Nematode absolute densities and genus counts from four stations near the Antarctic Peninsula, collected with a multicorer device during POLARSTERN cruise ANT-XXIX/3 in January-March 2013 Hauquier, Freija Durán Suja, Laura Gutt, Julian Veit-Köhler, Gritta Vanreusel, Ann Acantholaimus; Actarjania; Actinonema; Aegialoalaimus; Alaimella; Amphimonhystera; Amphimonhystrella; Anoplostoma; Anticoma; Antomicron; ANT-XXIX/3; Axonolaimus; Bolbolaimus; Calomicrolaimus; Camacolaimus; Campylaimus; Cervonema; Chromadora; Chromadoridae; Chromadorita; Cobbia; Comesa; Comesoma; Comesomatidae; Comment; Counting, compound microscope; Crenopharynx; Cyartonema; Cyatholaimidae; Cylindrolaimus; Daptonema; Date/Time of event; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Desmodora; Desmolaimus; Desmolorenzenia; Desmoscolex; Dichromadora; Diplolaimelloides; Diplopeltoides; Doliolaimus; Dorylaimopsis; DP-243; DP-250; Draconema; Dystomanema; Eleutherolaimus; Elevation of event; Elzalia; Endeolophos; Enoploides; Euchromadora; Event label; Filitonchus; Gammanema; Halalaimus; Halichoanolaimus; Halomonhystera; Laimella; Latitude of event; Ledovitia; Leptolaimoides; Leptolaimus; Linhomoeidae; Linhomoeus; Linhystera; Longicyatholaimus; Longitude of event; Marisalbinema; Marylynnia; Metacyatholaimus; Metalinhomoeus; Metasphaerolaimus; Metoncholaimus; Micoletzkyia; Microlaimus; Minolaimus; Mohysteridae; Molgolaimus; Monhystrella; MUC; MultiCorer; Nematoda; Neotonchus; Nudora; Odontanticoma; Odontophora; Optional event label; Oxystomina; Pandolaimus; Paracanthonchus; Paracyatholaimoides; Paracyatholaimus; Paralongicyatholaimus; Paramesacanthion; Paramicrolaimus; Paramonohystera; Parodontophora; Phanodermatidae; Phanodermopsis; Pierrickia; Platycomopsis; Polarstern; Pomponema; Promonhystera; Prototricoma; PS81; PS81/120-5; PS81/120-6; PS81/120-7; PS81/163-4; PS81/163-5; PS81/163-6; PS81/243-3; PS81/243-4; PS81/243-5; PS81/250-3; PS81/250-4; PS81/250-5; Pselionema; Pseudochromadora; Sabatieria; Sarsonia; Scotia Sea; Southerniella; Sphaerolaimus; Spilophorella; Steineridora; Terschellingia; Thalassoalaimus; Thalassomonhystera; Theristus; Thoracostoma; Thoracostomopsis; Tricoma; Viscosia; W-120; W-163; Weddell Sea; Wieseria; Xyalidae Marine free-living nematode communities were studied at similar depths (~500m) at two sides of the Antarctic Peninsula, characterised by different environmental and oceanographic conditions. At the Weddell Sea side, benthic communities are influenced by cold deep-water formation and seasonal sea-ice conditions, whereas the Drake Passage side experiences milder oceanic conditions and strong dynamics of the Antarctic Circumpolar Current. Surface primary productivity contrasted with observed benthic pigment patterns and varied according to the area studied: chlorophyll a concentrations (as a proxy for primary production) were high in the Weddell Sea sediments, but low in the surface waters above; this pattern was reversed in the Drake Passage. Differences between areas were largely mirrored by the nematode communities: nematode densities peaked in Weddell stations and showed deeper vertical occurrence in the sediment, associated with deeper penetration of chlorophyll a. Generic composition did not differ markedly between both areas, but rather showed distinct community shifts with depth in the sediment. |
| title | Nematode absolute densities and genus counts from four stations near the Antarctic Peninsula, collected with a multicorer device during POLARSTERN cruise ANT-XXIX/3 in January-March 2013 |
| topic | Acantholaimus; Actarjania; Actinonema; Aegialoalaimus; Alaimella; Amphimonhystera; Amphimonhystrella; Anoplostoma; Anticoma; Antomicron; ANT-XXIX/3; Axonolaimus; Bolbolaimus; Calomicrolaimus; Camacolaimus; Campylaimus; Cervonema; Chromadora; Chromadoridae; Chromadorita; Cobbia; Comesa; Comesoma; Comesomatidae; Comment; Counting, compound microscope; Crenopharynx; Cyartonema; Cyatholaimidae; Cylindrolaimus; Daptonema; Date/Time of event; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Desmodora; Desmolaimus; Desmolorenzenia; Desmoscolex; Dichromadora; Diplolaimelloides; Diplopeltoides; Doliolaimus; Dorylaimopsis; DP-243; DP-250; Draconema; Dystomanema; Eleutherolaimus; Elevation of event; Elzalia; Endeolophos; Enoploides; Euchromadora; Event label; Filitonchus; Gammanema; Halalaimus; Halichoanolaimus; Halomonhystera; Laimella; Latitude of event; Ledovitia; Leptolaimoides; Leptolaimus; Linhomoeidae; Linhomoeus; Linhystera; Longicyatholaimus; Longitude of event; Marisalbinema; Marylynnia; Metacyatholaimus; Metalinhomoeus; Metasphaerolaimus; Metoncholaimus; Micoletzkyia; Microlaimus; Minolaimus; Mohysteridae; Molgolaimus; Monhystrella; MUC; MultiCorer; Nematoda; Neotonchus; Nudora; Odontanticoma; Odontophora; Optional event label; Oxystomina; Pandolaimus; Paracanthonchus; Paracyatholaimoides; Paracyatholaimus; Paralongicyatholaimus; Paramesacanthion; Paramicrolaimus; Paramonohystera; Parodontophora; Phanodermatidae; Phanodermopsis; Pierrickia; Platycomopsis; Polarstern; Pomponema; Promonhystera; Prototricoma; PS81; PS81/120-5; PS81/120-6; PS81/120-7; PS81/163-4; PS81/163-5; PS81/163-6; PS81/243-3; PS81/243-4; PS81/243-5; PS81/250-3; PS81/250-4; PS81/250-5; Pselionema; Pseudochromadora; Sabatieria; Sarsonia; Scotia Sea; Southerniella; Sphaerolaimus; Spilophorella; Steineridora; Terschellingia; Thalassoalaimus; Thalassomonhystera; Theristus; Thoracostoma; Thoracostomopsis; Tricoma; Viscosia; W-120; W-163; Weddell Sea; Wieseria; Xyalidae |
| url | https://doi.org/10.1594/PANGAEA.846306 |