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triticites and Triticites, found near the top of thesection, points to a correlation of the uppermostpart of the section with the basal Missourian ofNorth America. Some combined studies onspores and fusulinaceans, carried out previouslyin this and other Cantabrian Mountains sections,give clues for a tentative correlation with theWestern Europe stratigraphic scale.2008040269欧 洲 极 区 斯 瓦 尔 巴 特 群 岛 海 湾 冰 底 环 境 下 底栖 有 孔 虫 的 季 节 动 力 学 = Seasonal dynamicsof benthic foraminifera in a glacially fed fjord ofSvalbard, European arctic. ( 英 文 ). Korsun S;Hald M. Journal of Foraminiferal Research,2000, 30(4): 251-271 1 图 版 .Seasonal variations in benthic foraminiferalpopulations from a sediment-laden fjord wereanalyzed in order to provide insights into arcticforaminiferal ecology and to improve the interpretationof the late-glacial record. The fjord is25 km long and 100 m deep with a large tidewaterglacier at the fjord head. A pilot transect ofeight stations sampled in August 1995 revealedthe typical off-glacier sequence of foraminiferaltaxa. Unidentified allogromiids were abundant inthe vicinity of the ice front. Further down thefjord Elphidium excavatum f. clavatum andCassidulina reniforme co-dominated the glacierproximalfauna. Nonionellina labradorica andIslandiella norcrossi characterized the glacierdistalsetting. In 1996 three glacier-proximalstations were then sampled in March, May, July,August, September and November. Compared tothe summer of 1995 the summer of 1996 wascolder, resulting in weaker glacial meltwaterdischarge, and the foraminiferal fauna becameless influenced by glaciers. This is portrayed byan increase in glacier-distal N. labradorica and adecrease in glacier-proximal C. reniforme andespecially E. excavatum. Taxonomic diversitywas higher in winter, possibly reflecting a morestable environment in the absence of the turbidmeltwater plume, the source of ecological stress.2008040270美 国 亚 特 兰 大 海 岸 中 部 新 生 代 沼 泽 有 孔 虫 组合 的 形 成 及 对 新 生 代 海 平 面 变 化 研 究 的 意 义= The formation fo Holocene marsh foraminiferalassemblages, middle atlantic coast, U.S.A.:implications for Holocene sea-level change. ( 英文 ). Hippenstee S P; Marin R E. Journal of ForaminiferalResearch, 2000, 30(4): 272-293Substantial spatio-temporal variation in foraminiferalinputs occur over short areal distancesat the sediment-water interface anddowncore as a result of patchy distributions andseasonal reproduction; foraminiferal assemblagesare in turn diagenetically overprinted byseasonal, inter-seasonal, and inter-annualchanges in pore-water chemistry. Seasonal surfaceand near-surface assemblages are typicallyunrepresentative of deeper assemblages that aremore likely to be incorporated into the sedimentaryrecord. Cluster analysis of "artificially timeaveraged"(ATA) assemblages revealed a distinctchange in assemblages at ~20cm depth.Differential preservation of foraminifera in theupper 60cm, and especially the upper 20cm, ofsediment may produce an apparent paleoenvironmentalchange that could potentially be misinterpretedas a rapid fall in sea-level over thelast ~100–200 years.2008040271上 白 垩 统 经 向 条 纹 的 Hedbergellids 的 属Meridionalla El-Nakhal, 1982 和Costellagerina Petters,El-Nakhal and Cifelli,1983 的 对 比 研 究 = Upper Cretaceous Meridionallycostellate Hedbergellids: the genus meridionallaEl-Nakhal, 1982 vs. the genus Costellagerinapetters,El-Nakhal and Cifelli, 1983. ( 英文 ). Petrizzo M R; Silva I P. Journal of ForaminiferalResearch, 2000, 30(4): 306-309 2 图版 .The two genera, Meridionalla El-Nakhal,1982 and Costellagerina Petters, El-Nakhal andCifelli, 1983, both erected to accommodate allthe pre-Campanian meridionally costellate species,are discussed after comparison with theholotypes of the type species. Observationsclearly indicate that Costellagerina is the appropriategenus, while the genus Meridionalla isinappropriate because its type species, Hedbergellamurphyi Marianos and Zingula 1966 doesnot possess the textural ornamentation diagnosticfor the genus.2008040272变 形 有 孔 虫 Arcellacean 组 合 和 种 类 对 于 加 拿大 安 大 略 湖 东 北 James 湖 污 染 研 究 的 指 示 意义 = Assessment of Arcellacean (Thecamoebian)assemblages,species, and strains as contaminantindicators in James lake, northeasternOntario, Canada. ( 英 文 ). Patterson R T; KumarA. Journal of Foraminiferal Research, 2000,30(4): 310-320 2 图 版 .Conditions in James Lake vary from uncontaminatedand nearly neutral pH conditionsthrough most of the lake, to extremely low pHconditions (2.1 in places) contaminated with Fe,Al and SO4 adjacent to an abandoned pyritemine near the lake outlet. Six assemblages representativeof distinct arcellacean habitats wererecognized in sediment-water interface samplescollected in the lake using Q-mode ClusterAnalysis. R-Mode analysis of this distributionaldata corroborates previous results indicating that87