Water mites of the family Hygrobatidae Koch from southern Africa (Acari: Hydrachnidia)

New records are given of the water mite family Hygrobatidae (without the genus Atractides) from southern Africa (South Africa, Botswana, Namibia). In addition to one new subgenus of the genus Hygrobates, namely Inflatibates, four new species are described, namely Hygrobates draconicus, H. laceratoides, H. okavangoensis, and H. inflatipes as well as one new subspecies, namely Hygrobates spathuliferus cederberg. The following synonyms are established: the subgenus Capobates Thor with Hygrobates Koch, Hygrobates sanguineus transvaalensis K. O. Viets with Hygrobates spathuliferus (Lundblad), and Ambiguobates permixtus agnewi K. O. Viets with Ambiguobates permixtus K. Viets. The male of Australiobates pilosus (K. Viets) is described for the first time. The synonymization of Diversibates with Australiobates can now be confirmed. Finally, keys are given for the known genera of southern Africa, as well as for all known species of the genus Hygrobates from southern Africa.     

论南朝序体文的撰作风貌

南朝序体文数量颇多,篇幅长短不一,题材内容丰富多彩,创作意图各异。从内容上来看,诸作或为帝王歌功颂德,或诠释文学批评观,或褒扬某些作家的为人为文,或自述志趣好尚等。从形式上来看,这些序体文以骈、散两体并行于文苑,骈体序文讲究形式技巧,藻采纷呈,用典繁密,音律协畅,对偶精工;散体序文句式灵活多样,言志抒情明确深刻。     

安徽淮北晚古生代煤系的植物化石组合

本文通过所采集的大量植物化石,讨论了安徽淮北地区太原组、山西组、下石盒子组及上石盒子组植物群特征,并划分为四个植物化石组合。同时根据植物群面貌、孢粉组合、含煤性及岩石地球化学特征,可将k_3砂岩作为上、下石盒子组界线     

西安南五台色球藻科蓝藻类的研究

本文报道了西安南五台山的色球藻科蓝藻30种(其中包括变种),并对这些种在不同生态环境和不同林带的生态分布作了初步研讨.     

安徽省地理分布新记录植物

本文首次报道了刻鳞苔草和美丽苔草为中国地理分布新记录;裂瓜属,竹叶子属,沼兰属为安徽省新分布属;红果类叶升麻,直穗小蘖等34种(包括变种)为安徽省地理分布新记录植物。     

皖南叶附生苔研究——安徽苔藓植物区系研究之一

本文报道了皖南叶附生苔4科10属17种,较前记录增加了3科7属15种;11种为安徽省新记录,其中粗柱疣鳞苔(新拟名)(Cololejeunea ornata Ev.)为中国新记录;原为热带太平洋岛屿分布的狭瓣细鳞苔(Lejeunea borneensis Horik.)首次在大陆上被发现。皖南叶附生苔种类丰富,仅次于福建武夷山而在华东地区居第二位。尖叶薄鳞苔(Leptolejeunea elliptica)、尖舌扁萼苔(Radula acuminata)、棉毛疣鳞苔(Cololejeunea floccosa)和狭叶残叶苔(Leptocolea oblonga)是组成本地区叶附生苔群落的常见种。对附主植物的研究表明叶附生苔对附主的选择并不严格,光滑无毛,质地较厚的叶面似更适合叶附生苔的生长。     

Radiolarian record to paleoecological environment change events over the past 1.2 MaBP in the southern South China Sea

This note studies the Radiolarian fossil groups since 1.2 MaBP in ODP leg 184 site 1143, the southern South China Sea (SCS). The result shows that radiolarian abundance experienced a significant variation: before 0.9 MaBP it remained at the extremely low level, but increased with low extent between 0.9–0.65 Ma, which corresponded to the Mid-Pleistocene Transition stage, and it increased rapidly after 0.65 MaBP. During the whole process, the average abundance became higher and higher in each stage, and showed regularly periodic fluctuations. The obvious increase after 0.65 MaBP is inferred to result from the enhanced upwelling in this region, which was induced by the intensified monsoon circulation after the “Mid-Pleistocene Transition”. An outstanding result of the spectral analyses is that a long oscillation of ∼ 0.2 Ma cycle was found in the records of radiolarian abundance and complex diversity, which corresponds well to the result of other paleoceanographic indexes. This probably indicated a special cycle characteristic of paleoecological environment evolution in this area. In addition, all of the radiolarian indexes show an obvious boundary in about 0.47 MaBP, indicating the abrupt variation of the community structure and radiolarian abundance level before and after 0.47 MaBP. So we suppose that there existed a distinct change event of oceanic ecology environment during that period.