Core-top radiolarian abundances and environmental data from the western Pacific, East China Sea and South China Sea, supplement to: Hernández-Almeida, Iván; Cortese, Giuseppe; Yu, Pai-Sen; Chen, Min-Te; Kucera, Michal (2017): Environmental determinants of radiolarian assemblages in the western Pacific since the last deglaciation. Paleoceanography, 32(8), 830-847

• Main Authors: Hernández-Almeida, Iván, Cortese, Giuseppe, Yu, Pai-Sen, Chen, Min-Te, Kucera, Michal
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2017
• Subjects: Event label; Station label; DEPTH, sediment/rock; Reference/source; Area/locality; LATITUDE; LONGITUDE; Sea surface temperature, annual mean; Sea surface salinity; Oxygen, apparent utilization; Phosphorus; Nitrogen; Silicon; Sea surface temperature, winter; Sea surface salinity, winter; Sea surface temperature, summer; Sea surface salinity, summer; Actinomma arcadophorum; Actinomma spp.; Actinomma leptodermum; Cromyechinus antarctica; Amphirhopalum ypsilon; Actinomma delicatulum; Euchitonia furcata; Actinomma antarcticum; Larcospira quadrangula; Didymocyrtis tetrathalamus; Larcopyle buetschlii; Spongaster tetras; Spongocore puella; Spongopyle resurgens; Spongotrochus glacialis; Stylatractus spp.; Hexapyle dodecantha group; Tetrapyle spp.; Lithopera bacca; Amphispyris reticulata; Zygocircus sp.; Carpocanium spp.; Lamprocyrtis nigriniae; Lophospyris pentagona; Giraffospyris angulata; Phormospyris stabilis scaphipes; Phormospyris stabilis stabilis; Lamprocyclas junonis; Botryostrobus auritus; Botryocyrtis scutum; Pterocanium spp.; Pterocanium praetextum praetextum; Pterocanium trilobum; Dictyophimus hirundo; Siphocampe corbula; Botryostrobus aquilonaris; Cycladophora davisiana; Cycladophora bicornis; Theocorythium trachelium; Ceratospyris borealis; Antarctissa denticulata; Lamprocyclas maritalis; Dictyocoryne group; Colonials; Cenosphaera spp.; Spongodiscus spp.; Stylodyctya group; Stylochlamydium group; Spongurus elliptica; Spongurus sp.; Larcopyle weddellium; Pterocorys hertwigii; Spongurus pylomaticus; Axoprunum stauraxonium; Stylatractus universus; Acanthosphaera actinota; Acanthosphaera bemardi; Acanthosphaera sp.; Actinomma sol; Anomalacantha dentata; Arachnocorys umbelifera; Archipilium sp.; Buccinosphaera invaginata; Callimitra emmae; Carpocanarium papillosum; Cathrocyclas sp.; Centrobotrys thermophila; Circodiscus microporus; Cladococcus cervicornis; Clathrocanium diadema; Clathrocorys teuscheri; Cornutella profunda; Corocalyptra columba; Corocalyptra craspedota; Cubotholus octoceras; Cyrtopera laguncula; Dictyophimus infabricatus; Diplocyclas bicorona; Dipylissa bensoni; Druppatractus variabilis; Eucecryphalus sestrodiscus; Heliodiscus asteriscus; Lamprocyrtis hanae; Lamprocyrtis sp.; Lampromitra group; Lipmanella virchowii; Lithomelissa setosa; Lithomelissa thoracites; Lithomitra lineata; Lithostrobus hexagonalis; Lophophaena hispida; Lophophaenoma witjazii; Lophospyris pentagona hyperborea; Nephrospyris renilla; Peripyramis circumtexta; Peromelissa phalacra; Phorticium pylonium; Plagonidae group; Plegmosphaera entodictyon; Pseudodictyophimus gracilipes; Pteroscenium pinnatum; Saturnalis circularis; Sethocorys odysseus; Sethodiscus macrococcus; Sethophormis aurelia; Sethophormis rotula; Spirocyrtis scalaris; Spongoplegma; Stichocorys seriata; Streblacantha circumtexta; Stylosphaera melporne; Styptosphaera spongiacea; Theopilium tricostatum; Tholospyris ramosa; Tholospyris tripodiscus; Tripodospiris sp.; Tholospyris sp.; Porodiscus ellipticus; Spongotrochus sp.; Anthocyrtidium ophirense; Anthocyrtidium zanguebaricum; Hexacontium aristarchi; Hexacontium enthacanthum; Hexacontium laevigatum; Hexacontium pachydermum; Hexacontium spp.; Lithelius minor; Lithelius nautiloides; Lithelius spiralis; Lithelius spp.; Lithelius xanthiformis; Eucyrtidium acuminatum; Eucyrtidium anomalum; Eucyrtidium hexagonatum; Eucyrtidium spp.; Drilling/drill rig; Gravity corer; Piston corer; Exp349; ANTIPODE; RC12; RC14; V19; V21; Joides Resolution; Melville; Robert Conrad; Vema; Integrated Ocean Drilling Program / International Ocean Discovery Program IODP; Pacific; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.1594/pangaea.883474; https://doi.pangaea.de/10.1594/PANGAEA.883474

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.