@article{oai:omnh.repo.nii.ac.jp:00001302, author = {松岡, 數充 and 石井, 健一郎 and MATSUOKA, Kazumi and ISHII, Ken’ichiro}, journal = {大阪市立自然史博物館研究報告, Bulletin of the Osaka Museum of Natural History}, month = {Mar}, note = {大阪湾表層堆積物中に観察される花粉,シダ植物胞子,菌類以外の渦鞭毛藻シスト,チンチノモルフ,有孔虫ライニング,甲殻類の一部,アクリタークなどから構成される海産・淡水産パリノモルフを記載した.甲殻類遺骸や淡水産パリノモルフを除くと渦鞭毛藻シストが最も優占(Station8で21,567 cysts/g)し,有孔虫ライニングがそれに次いだ( St. 5で4,224 linings/g).麻痺性貝毒原因種 Alexandrium 属の楕円形シストはSt. 7で最高密度 3,610 cysts/g で出現して湾全域に分布していた.魚毒性ラフィド藻Chattonella シストもSt. 8で最高密度 455 cysts/gで出現し,湾全域に分布していた.淡水産パリノモルフは主に緑藻類Staurastrumで構成され,淀川河口付近のSt. 7 と St..8( St. 7 で49,875 cells/g) で極めて多産していた.この種の分布状況は東部沿岸残渣流の方向を反映しているようである.この様に海産・淡水産パリノモルフは環境復元にとって有効な遺骸であることが判明した., Various marine and freshwater palynomorphs consisting of dinoflagellate cysts, tintinnomorphs, microforaminiferal linings, crustacean eggs and fragments, and acritarchs, as well as pollen and fern spores were found in surface sediments of Osaka Bay, Japan are briefly described. Except for crustacean remains and freshwater palynomorphs, the most dominant palynomorpha are dinoflagellate cysts (21,567 cysts/g at Station 8) followed by microforaminiferal linings( 4,224 linings/g at St. 5). Ellipsoidal cysts identical to those produced by PSP causative Alexandrium tamarense/catenella were distributed throughout the bay (highest abundance of 3,610 cysts/g at St. 7). Cysts of ichthyo-toxic raphydophycean Chattonella were also observed throughout the bay with the highest occurrence of 455 cysts/g at St. 8). Freshwater palynomorphs mainly consisting of chlorophycean Staurastrum were extremely dominated at Sts. 7 and 8, near the mouth of the Yodo River( 49,875 cells/g at St. 7). Its distribution appears to reflect the flowing direction of the East Coast Residual Current. Thus, marine and freshwater palynomorphs are useful tools for reconstructing environments.}, pages = {1--17}, title = {大阪湾表層堆積物中の海産・淡水産パリノモルフ}, volume = {72}, year = {2018}, yomi = {マツオカ, カズミ and イシイ, ケンイチロウ} }