Core-top radiolarian abundances and environmental data from the western Pacific, East China Sea and South China Sea
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2017
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| author | Hernández-Almeida, Iván Cortese, Giuseppe Yu, Pai-Sen Chen, Min-Te Kucera, Michal |
| author_facet | Hernández-Almeida, Iván Cortese, Giuseppe Yu, Pai-Sen Chen, Min-Te Kucera, Michal |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Radiolarians are a very diverse microzooplanktonic group, often distributed in regionally restricted assemblages and responding to specific environmental factors. These properties of radiolarian assemblages make the group more conducive for the development and application of basin-wide ecological models. Here we use a new surface sediment data set from the western Pacific to demonstrate that ecological patterns derived from basin-wide open-ocean data sets cannot be transferred on semirestricted marginal seas. The data set consists of 160 surface sediment samples from three tropical-subtropical regions (East China Sea, South China Sea, and western Pacific), combining 54 new assemblage counts with taxonomically harmonized data from previous studies. Multivariate statistical analyses indicate that winter sea surface temperature at 10 m depth (SSTw) was the most significant environmental variable affecting the composition of radiolarian assemblages, allowing the development of an optimal calibration model (Locally Weighted-Weighted Averaging regression inverse deshrinking, R2cv = 0.88, root-mean-square error of prediction = 1.6°C). The dominant effect of SSTw on radiolarian assemblage composition in the western Pacific is attributed to the East Asian Winter Monsoon (EAWM), which is particularly strong in the marginal seas. To test the applicability of the calibration model on fossil radiolarian assemblages from the marginal seas, the calibration model was applied to two downcore records from the Okinawa Trough, covering the last 18 ka. We observe that these assemblages find most appropriate analogs among modern samples from the marginal basins (East China Sea and South China Sea). Downcore temperature reconstructions at both sites show similarities to known regional SST reconstructions, providing proof of concept for the new radiolarian-based SSTw calibration model. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_883474 |
| institution | PANGAEA |
| language | en |
| publishDate | 2017 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Core-top radiolarian abundances and environmental data from the western Pacific, East China Sea and South China Sea Hernández-Almeida, Iván Cortese, Giuseppe Yu, Pai-Sen Chen, Min-Te Kucera, Michal 349-U1431A; 349-U1432A; 349-U1433A; Acanthosphaera actinota; Acanthosphaera bemardi; Acanthosphaera sp.; Actinomma antarcticum; Actinomma arcadophorum; Actinomma delicatulum; Actinomma leptodermum; Actinomma sol; Actinomma spp.; Amphirhopalum ypsilon; Amphispyris reticulata; Anomalacantha dentata; Antarctissa denticulata; Anthocyrtidium ophirense; Anthocyrtidium zanguebaricum; ANTIPODE; ANTP-176G; Arachnocorys umbelifera; Archipilium sp.; Area/locality; Axoprunum stauraxonium; Botryocyrtis scutum; Botryostrobus aquilonaris; Botryostrobus auritus; Buccinosphaera invaginata; Callimitra emmae; Carpocanarium papillosum; Carpocanium spp.; Cathrocyclas sp.; Cenosphaera spp.; Centrobotrys thermophila; Ceratospyris borealis; Circodiscus microporus; Cladococcus cervicornis; Clathrocanium diadema; Clathrocorys teuscheri; Colonials; Cornutella profunda; Corocalyptra columba; Corocalyptra craspedota; Cromyechinus antarctica; Cubotholus octoceras; Cycladophora bicornis; Cycladophora davisiana; Cyrtopera laguncula; DEPTH, sediment/rock; Dictyocoryne group; Dictyophimus hirundo; Dictyophimus infabricatus; Didymocyrtis tetrathalamus; Diplocyclas bicorona; Dipylissa bensoni; DRILL; Drilling/drill rig; Druppatractus variabilis; East China Sea; ECS_A054; ECS_A058; ECS_A066; ECS_A068; ECS_A069; ECS_A072; ECS_A074; ECS_A076; ECS_A081; ECS_A084; ECS_A089; ECS_A090; ECS_A092; ECS_A60; ECS_B02; ECS_B12; ECS_B13; ECS_B18; ECS_Y001; ECS_Y003; ECS_Y005; ECS_Y007; ECS_Y013; ECS_Y014; ECS_Y024; ECS_Y027; ECS_Y030; ECS_Y035; ECS_Y039; ECS_Y041; ECS_Y053; ECS_Y055; ECS_Y057; ECS_Y065; ECS_Y069; ECS_Y071; ECS_Y078; ECS_Y082; ECS_Y090; ECS_Y096; ECS_Y098; ECS_Y103; ECS_Y104; ECS_Y105; ECS_Y108; ECS_Y110; ECS_Y113; ECS_Y117; ECS_Y121; ECS_Y126; ECS_Y129; ECS_Y132; ECS_Y138; ECS_Y140; ECS_Y145; ECS_Y146; ECS_Y147; ECS_Y149; ECS_Y151; ECS_Y155; ECS_Y162; ECS_Y164; ECS_Y167; ECS_Y171; ECS_Y172; ECS_Y174; Eucecryphalus sestrodiscus; Euchitonia furcata; Eucyrtidium acuminatum; Eucyrtidium anomalum; Eucyrtidium hexagonatum; Eucyrtidium spp.; Event label; Exp349; GC; Giraffospyris angulata; Gravity corer; Heliodiscus asteriscus; Hexacontium aristarchi; Hexacontium enthacanthum; Hexacontium laevigatum; Hexacontium pachydermum; Hexacontium spp.; Hexapyle dodecantha group; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Lamprocyclas junonis; Lamprocyclas maritalis; Lamprocyrtis hanae; Lamprocyrtis nigriniae; Lamprocyrtis sp.; Lampromitra group; Larcopyle buetschlii; Larcopyle weddellium; Larcospira quadrangula; LATITUDE; Lipmanella virchowii; Lithelius minor; Lithelius nautiloides; Lithelius spiralis; Lithelius spp.; Lithelius xanthiformis; Lithomelissa setosa; Lithomelissa thoracites; Lithomitra lineata; Lithopera bacca; Lithostrobus hexagonalis; LONGITUDE; Lophophaena hispida; Lophophaenoma witjazii; Lophospyris pentagona; Lophospyris pentagona hyperborea; Melville; Nephrospyris renilla; Nitrogen; Open Western North Pacific; OR1-0281-5-B; ORI-0182-3-B; ORI-0216-1-B; ORI-0219-4-B; ORI-0219-7-B-2; ORI-0281-10B; ORI-0281-11B; ORI-0281-131P; ORI-0281-13B; ORI-0281-15-B; ORI-0281-2-B; ORI-0281-6-B; ORI-0281-7-B-5; ORI-0281-8-B; ORI-0281-9-B; ORI-0299-1-B-1; ORI-0311-68-B; ORI-0311-80-B; ORI-0311-90-B; ORI-0455-10-B; ORI-0455-13B; ORI-0455-14B; ORI-0455-15-B; ORI-0455-17-B; ORI-0455-19-B; ORI-0455-1-B; ORI-0455-20B; ORI-0455-21-B; ORI-0455-2-B; ORI-0455-4B; ORI-0455-6-B; ORI-0455-7-B; ORI-0455-9-B; OWP_RC10060; OWP_RC10067; OWP_V19009; OWP_V20028; OWP_V20031; OWP_V20036; OWP_V20037; OWP_V20038; OWP_V20039; OWP_V21026; OWP_V21039; OWP_V21045; OWP_V21046; OWP_V21047; OWP_V24004; OWP_V24012; OWP_V24015; OWP_V24017; OWP_V24039; OWP_V24041; OWP_V24043; OWP_V24046; OWP_V24047; OWP_V24050; Oxygen, apparent utilization; PC; Peripyramis circumtexta; Peromelissa phalacra; Phormospyris stabilis scaphipes; Phormospyris stabilis stabilis; Phorticium pylonium; Phosphorus; Piston corer; Plagonidae group; Plegmosphaera entodictyon; Porodiscus ellipticus; Pseudodictyophimus gracilipes; Pterocanium praetextum praetextum; Pterocanium spp.; Pterocanium trilobum; Pterocorys hertwigii; Pteroscenium pinnatum; RC12; RC12-402; RC12-411; RC12-417; RC14; RC14-98; Reference/source; Robert Conrad; Saturnalis circularis; Sea surface salinity; Sea surface salinity, summer; Sea surface salinity, winter; Sea surface temperature, annual mean; Sea surface temperature, summer; Sea surface temperature, winter; Sethocorys odysseus; Sethodiscus macrococcus; Sethophormis aurelia; Sethophormis rotula; Silicon; Siphocampe corbula; South China Sea; South China Sea Tectonics; Spirocyrtis scalaris; Spongaster tetras; Spongocore puella; Spongodiscus spp.; Spongoplegma; Spongopyle resurgens; Spongotrochus glacialis; Spongotrochus sp.; Spongurus elliptica; Spongurus pylomaticus; Spongurus sp.; Station label; Stichocorys seriata; Streblacantha circumtexta; Stylatractus spp.; Stylatractus universus; Stylochlamydium group; Stylodyctya group; Stylosphaera melporne; Styptosphaera spongiacea; Tetrapyle spp.; Theocorythium trachelium; Theopilium tricostatum; Tholospyris ramosa; Tholospyris sp.; Tholospyris tripodiscus; Tripodospiris sp.; TSDY05WT-005P; TSDY05WT-005PG; TSDY05WT-007P; TSDY05WT-007PG; TSDY07WT-029G; TSDY07WT-030G; TSDY-10G; TSDY-11G; TSDY-12G; V19; V19-127; V19-130; V21; V21-129; V21-130; V21-71; V21-73; V21-74; V21-75; V21-80; V21-83; V21-97; V21-99; Vema; Zygocircus sp. Radiolarians are a very diverse microzooplanktonic group, often distributed in regionally restricted assemblages and responding to specific environmental factors. These properties of radiolarian assemblages make the group more conducive for the development and application of basin-wide ecological models. Here we use a new surface sediment data set from the western Pacific to demonstrate that ecological patterns derived from basin-wide open-ocean data sets cannot be transferred on semirestricted marginal seas. The data set consists of 160 surface sediment samples from three tropical-subtropical regions (East China Sea, South China Sea, and western Pacific), combining 54 new assemblage counts with taxonomically harmonized data from previous studies. Multivariate statistical analyses indicate that winter sea surface temperature at 10 m depth (SSTw) was the most significant environmental variable affecting the composition of radiolarian assemblages, allowing the development of an optimal calibration model (Locally Weighted-Weighted Averaging regression inverse deshrinking, R2cv = 0.88, root-mean-square error of prediction = 1.6°C). The dominant effect of SSTw on radiolarian assemblage composition in the western Pacific is attributed to the East Asian Winter Monsoon (EAWM), which is particularly strong in the marginal seas. To test the applicability of the calibration model on fossil radiolarian assemblages from the marginal seas, the calibration model was applied to two downcore records from the Okinawa Trough, covering the last 18 ka. We observe that these assemblages find most appropriate analogs among modern samples from the marginal basins (East China Sea and South China Sea). Downcore temperature reconstructions at both sites show similarities to known regional SST reconstructions, providing proof of concept for the new radiolarian-based SSTw calibration model. |
| title | Core-top radiolarian abundances and environmental data from the western Pacific, East China Sea and South China Sea |
| topic | 349-U1431A; 349-U1432A; 349-U1433A; Acanthosphaera actinota; Acanthosphaera bemardi; Acanthosphaera sp.; Actinomma antarcticum; Actinomma arcadophorum; Actinomma delicatulum; Actinomma leptodermum; Actinomma sol; Actinomma spp.; Amphirhopalum ypsilon; Amphispyris reticulata; Anomalacantha dentata; Antarctissa denticulata; Anthocyrtidium ophirense; Anthocyrtidium zanguebaricum; ANTIPODE; ANTP-176G; Arachnocorys umbelifera; Archipilium sp.; Area/locality; Axoprunum stauraxonium; Botryocyrtis scutum; Botryostrobus aquilonaris; Botryostrobus auritus; Buccinosphaera invaginata; Callimitra emmae; Carpocanarium papillosum; Carpocanium spp.; Cathrocyclas sp.; Cenosphaera spp.; Centrobotrys thermophila; Ceratospyris borealis; Circodiscus microporus; Cladococcus cervicornis; Clathrocanium diadema; Clathrocorys teuscheri; Colonials; Cornutella profunda; Corocalyptra columba; Corocalyptra craspedota; Cromyechinus antarctica; Cubotholus octoceras; Cycladophora bicornis; Cycladophora davisiana; Cyrtopera laguncula; DEPTH, sediment/rock; Dictyocoryne group; Dictyophimus hirundo; Dictyophimus infabricatus; Didymocyrtis tetrathalamus; Diplocyclas bicorona; Dipylissa bensoni; DRILL; Drilling/drill rig; Druppatractus variabilis; East China Sea; ECS_A054; ECS_A058; ECS_A066; ECS_A068; ECS_A069; ECS_A072; ECS_A074; ECS_A076; ECS_A081; ECS_A084; ECS_A089; ECS_A090; ECS_A092; ECS_A60; ECS_B02; ECS_B12; ECS_B13; ECS_B18; ECS_Y001; ECS_Y003; ECS_Y005; ECS_Y007; ECS_Y013; ECS_Y014; ECS_Y024; ECS_Y027; ECS_Y030; ECS_Y035; ECS_Y039; ECS_Y041; ECS_Y053; ECS_Y055; ECS_Y057; ECS_Y065; ECS_Y069; ECS_Y071; ECS_Y078; ECS_Y082; ECS_Y090; ECS_Y096; ECS_Y098; ECS_Y103; ECS_Y104; ECS_Y105; ECS_Y108; ECS_Y110; ECS_Y113; ECS_Y117; ECS_Y121; ECS_Y126; ECS_Y129; ECS_Y132; ECS_Y138; ECS_Y140; ECS_Y145; ECS_Y146; ECS_Y147; ECS_Y149; ECS_Y151; ECS_Y155; ECS_Y162; ECS_Y164; ECS_Y167; ECS_Y171; ECS_Y172; ECS_Y174; Eucecryphalus sestrodiscus; Euchitonia furcata; Eucyrtidium acuminatum; Eucyrtidium anomalum; Eucyrtidium hexagonatum; Eucyrtidium spp.; Event label; Exp349; GC; Giraffospyris angulata; Gravity corer; Heliodiscus asteriscus; Hexacontium aristarchi; Hexacontium enthacanthum; Hexacontium laevigatum; Hexacontium pachydermum; Hexacontium spp.; Hexapyle dodecantha group; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Lamprocyclas junonis; Lamprocyclas maritalis; Lamprocyrtis hanae; Lamprocyrtis nigriniae; Lamprocyrtis sp.; Lampromitra group; Larcopyle buetschlii; Larcopyle weddellium; Larcospira quadrangula; LATITUDE; Lipmanella virchowii; Lithelius minor; Lithelius nautiloides; Lithelius spiralis; Lithelius spp.; Lithelius xanthiformis; Lithomelissa setosa; Lithomelissa thoracites; Lithomitra lineata; Lithopera bacca; Lithostrobus hexagonalis; LONGITUDE; Lophophaena hispida; Lophophaenoma witjazii; Lophospyris pentagona; Lophospyris pentagona hyperborea; Melville; Nephrospyris renilla; Nitrogen; Open Western North Pacific; OR1-0281-5-B; ORI-0182-3-B; ORI-0216-1-B; ORI-0219-4-B; ORI-0219-7-B-2; ORI-0281-10B; ORI-0281-11B; ORI-0281-131P; ORI-0281-13B; ORI-0281-15-B; ORI-0281-2-B; ORI-0281-6-B; ORI-0281-7-B-5; ORI-0281-8-B; ORI-0281-9-B; ORI-0299-1-B-1; ORI-0311-68-B; ORI-0311-80-B; ORI-0311-90-B; ORI-0455-10-B; ORI-0455-13B; ORI-0455-14B; ORI-0455-15-B; ORI-0455-17-B; ORI-0455-19-B; ORI-0455-1-B; ORI-0455-20B; ORI-0455-21-B; ORI-0455-2-B; ORI-0455-4B; ORI-0455-6-B; ORI-0455-7-B; ORI-0455-9-B; OWP_RC10060; OWP_RC10067; OWP_V19009; OWP_V20028; OWP_V20031; OWP_V20036; OWP_V20037; OWP_V20038; OWP_V20039; OWP_V21026; OWP_V21039; OWP_V21045; OWP_V21046; OWP_V21047; OWP_V24004; OWP_V24012; OWP_V24015; OWP_V24017; OWP_V24039; OWP_V24041; OWP_V24043; OWP_V24046; OWP_V24047; OWP_V24050; Oxygen, apparent utilization; PC; Peripyramis circumtexta; Peromelissa phalacra; Phormospyris stabilis scaphipes; Phormospyris stabilis stabilis; Phorticium pylonium; Phosphorus; Piston corer; Plagonidae group; Plegmosphaera entodictyon; Porodiscus ellipticus; Pseudodictyophimus gracilipes; Pterocanium praetextum praetextum; Pterocanium spp.; Pterocanium trilobum; Pterocorys hertwigii; Pteroscenium pinnatum; RC12; RC12-402; RC12-411; RC12-417; RC14; RC14-98; Reference/source; Robert Conrad; Saturnalis circularis; Sea surface salinity; Sea surface salinity, summer; Sea surface salinity, winter; Sea surface temperature, annual mean; Sea surface temperature, summer; Sea surface temperature, winter; Sethocorys odysseus; Sethodiscus macrococcus; Sethophormis aurelia; Sethophormis rotula; Silicon; Siphocampe corbula; South China Sea; South China Sea Tectonics; Spirocyrtis scalaris; Spongaster tetras; Spongocore puella; Spongodiscus spp.; Spongoplegma; Spongopyle resurgens; Spongotrochus glacialis; Spongotrochus sp.; Spongurus elliptica; Spongurus pylomaticus; Spongurus sp.; Station label; Stichocorys seriata; Streblacantha circumtexta; Stylatractus spp.; Stylatractus universus; Stylochlamydium group; Stylodyctya group; Stylosphaera melporne; Styptosphaera spongiacea; Tetrapyle spp.; Theocorythium trachelium; Theopilium tricostatum; Tholospyris ramosa; Tholospyris sp.; Tholospyris tripodiscus; Tripodospiris sp.; TSDY05WT-005P; TSDY05WT-005PG; TSDY05WT-007P; TSDY05WT-007PG; TSDY07WT-029G; TSDY07WT-030G; TSDY-10G; TSDY-11G; TSDY-12G; V19; V19-127; V19-130; V21; V21-129; V21-130; V21-71; V21-73; V21-74; V21-75; V21-80; V21-83; V21-97; V21-99; Vema; Zygocircus sp. |
| url | https://doi.org/10.1594/PANGAEA.883474 |