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维 吉 尼 亚 Philips Creek 地 区 维 吉 尼 亚 盐 沼 中的 有 孔 虫 组 合 = Foraminiferal assemblagesfrom a virginia salt marsh, Phillips Creek, Virginia.( 英 文 ). Spencer R S. Journal of ForaminiferalResearch, 2000, 30(2): 143-155Phillips Creek is a salt marsh located on theseaward side of the southern Delmarva Peninsulaof Virginia, is part of the World BiosphereReserve designated by the United Nations, and issituated within the Virginia Coast Reserve/LongTerm Ecological Research area (VCR/LTER).This marsh does not exhibit well-defined vegetationalzones but rather tends to be a patchy mixof vegetation. Cluster analysis indicates that thearea can be divided into low, middle or transitionaland high marsh. The low marsh zone doesnot exhibit any unique assemblages of agglutinatedforaminifera that would allow further subdivisionof this area. The fact that no calcareousspecies were found may be due to the season(May) when sampling was done. The low marshis dominated by M. fusca and T. inflata. The occurrenceof a transitional or middle marsh zoneappears to be dependent upon gradient. Traverse1 with a gradient of 3 percent has a poorly definedmiddle marsh zone while Traverse 2 with agradient of 0.6 percent has a broad, well definedtransitional zone. Tiphotrocha comprimata and T.inflata are the dominant species in this zone. Thehigh marsh can be subdivided into two subzones.The lower part of the high marsh is dominatedby T. inflata, T. comprimata and J. macrescenswhile the upper part has a relief ranging between5 and 8 cm, has a reduced population and containsJ. macrescens and T. salsa almost to theexclusion of all other foraminiferal species. Thissubzone, marking the occurrence of highest highwater, is topographically very narrow, requiringclosely spaced sampling to detect its presence.The highest high water zone can be extendedsouthward into Virginia.2008040264拉 普 帖 夫 外 海 和 Fram 海 峡 中 的 浮 游 有 孔 虫的 现 代 分 布 和 生 态 特 征 = Planktic foraminifersin the outer Laptev sea and the Fram straitmoderndistribution and ecology. ( 英 文 ). VolkmannR. Journal of Foraminiferal Research,2000, 30(3): 157-176Planktic foraminifers were studied in the ArcticOcean in the outer Laptev Sea (76–80°N,100–150°E) in 1995, in the Fram Strait (81–82°N, 10°W–15°E) and in the western BarentsSea (76°N, 33°E) in 1997. Five depth intervalswere sampled vertically between 500 m waterdepth and the sea surface. In the 125–250 µmsize class, highest abundances of living individualswere present in the western Fram Strait(17 ind/m3) and the Barents Sea (14 ind/m3),decreasing to 4 ind/m3 near Severnaya Zemlyaand less than 2 ind/m3 at the eastern Laptev Seacontinental margin. The most common speciesNeogloboquadrina pachyderma (sinistral coiling)occured in cold Polar water masses between 50and 100m water depth, where they accounted for>70% of all shells. A synodic lunar reproductivecycle is demonstrated in all sampled areas,where reproduction takes place around full moon.In warmer Atlantic water masses of the WestSpitzbergen Current and the Barents Sea, Turborotalitaauinqueloba contributes >85% to thetotal assemblage. Most individuals were obtainedbetween 50 and 200 m water depth. In thewestern Fram Strait affected by the EastGreenland Current and at the outer Laptev Searelative abundances decrease to 2–10%. Allother species combined make up only 5% of thetotal fauna. In general, empty tests are mostabundant in water depths deeper than 200m as aresult of gametogenesis and due to high juvenilemortality. The strong gradient in absolute abundancesseems to be determined by the availabilityof food, low salinity due to freshwater dischargefrom the Siberian rivers and the ice coverageof the Arctic Ocean. The relative abundances,however, reflect the complex hydrographicinteraction between relatively warm Atlanticwater inflow and cold polar water exportin the Arctic Ocean.2008040265潮 间 带 有 孔 虫 月 变 化 的 主 要 特 征 ( 现 存 量 和生 物 量 ) 研 究 = Major aspects of foraminiferalvariability (standing crop and biomass) on amonthly scale in an intertidal zone. ( 英 文 ).Murray J W; Alve E. Journal of ForaminiferalResearch, 2000, 30(3): 177-191Temporal and spatial variability of intertidalbenthic foraminiferal assemblages in the surface(0–1 cm) sediments have been determined by atime series survey (27 months) of the Hambleestuary, southern England. One pair of replicateswas collected each month from two stations atdifferent elevations in the intertidal zone. Theassemblages were dominated by three species,Haynesina germanica, Ammonia beccarii (formatepida), and Elphidium excavatum. Patchinessoccurred on a scale of a few centimeters and hada major impact on tracking temporal changes inthe standing crop. The study clearly shows theneed for replicate sampling in order to obtainreliable information especially on absoluteabundance data. The absence of juveniles is dueto loss through drying the samples prior to picking.The results show that it is not possible todetermine the lifespan of continuously reproducingspecies (i.e., young individuals always present)where it is impossible to follow the growthof cohorts, and for the same reason it is not pos-85