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annual flux rates is calculated and compared tothe counts of benthic foraminifera at 382 surfacesediment stations from the equatorial GuineaBasin to the Arctic Ocean. Benthic foraminiferashow high variability in flux range dependentdistributional patterns, with maximum deviationsat lowest percentages. The occurrence of a singlespecies covers flux ranges within one to threeorders of magnitude. Only a small number ofspecies shows a correlation of this broad rangeof organic fluxes versus percentages in a count.For C. wuellerstorfi a functional relationship forthe recalculation of flux rates from percentagesin a count can be given within a standard deviationbelow 2 g organic carbon [m (super -2) yr(super -1) ]. However, such functions have to berestricted to a specific size range counted. Thepatterns of dominance more closely scale theenvironmental optimum of the species in general.For interspecific combinations, these patternsidentify the ranges of overlap, where it is impossibleto distinguish between higher or lowerfluxes on the basis of faunal composition. This isquantified for the co-occurrence of C. wuellerstorfiand U. peregrina near 20% for one species.On an ocean wide scale, a number of taxacan be used to define threshold values for thenutritive needs of the assemblages, most pronouncedwithin annual flux ranges at 2-3g org. C[m (super -2) ]. Different trophic needs of speciescan be attributed to their infaunal, epibenthic,or opportunistic behavior respectively, andexamples for the flux dependent takeover indominance are given. These quantifications mayoffer approximations for flux rate dependentfaunal patterns in surface sediments and for thedetection of flux rate dependent faunal fluctuationsin the Quaternary record.2008040279铜 污 染 沉 积 物 实 验 中 底 栖 有 孔 虫 的 群 集 化 研究 = Benthic foraminiferal colonization in experimentswith copper-contaminated sediments.( 英 文 ). Alve E; Olsgard F. Journal of ForaminiferalResearch, 1999, 29(3): 186-195Colonization experiments, carried out over a32-week period at 63m water depth in theOslofjord, Norway, have shown that sedimentCu-concentrations of >900 ppm cause a changein the living (stained) foraminiferal communitystructure as compared to control values of 70ppm. The changes, which are revealed throughmultivariate statistical analyses (MDS-ordinationand ANOSIM tests) of the different treatmentassemblages, are reflected by increased equitabilityand reduced abundances in treatments withhigh (967-977 ppm) and very high (1761-2424ppm) Cu-concentrations. At the species level, asignificant negative effect of the Cu-enrichmentcould be observed only for Stainforthia fusiformisand Bolivinellina pseudopunctata. There wasno significant decrease in the number of specieswith increasing sediment Cu-enrichment. Thisindicates that not even sediment [Cu] > 2000ppm had a severe negative impact on the foraminiferalspecies ability to colonize. Oneprominent effect of the Cu-contamination is that,at concentrations higher than about 900 ppm, theopportunistic and dominant S. fusiformis developedan increasingly patchy distribution pattern.Cu-contaminated sediments alone do not seem topromote development of deformed hard-shelledforaminiferal tests beyond the normal range.2008040280Juan de Fuca 海 峡 周 边 潮 上 带 沼 泽 中 有 孔 虫的 分 布 及 其 对 古 地 震 学 研 究 的 意 义 = Foraminiferaldistributions in tidal marshes borderingthe Strait of Juan de Fuca; implications forpaleoseismicity studies. ( 英 文 ). Williams H F L.Journal of Foraminiferal Research, 1999, 29(3):196-208Foraminiferal distributions are reported forthree marshes bordering the Strait of Juan deFuca-the Sooke River marsh on Vancouver Island,Canada and the Discovery Bay and GibsonSpit marshes on the north shore of WashingtonState. Cluster analysis was used to define foraminiferalbiofacies with distinct elevationranges for each marsh. Comparison of these biofaciesto foraminiferal zonations on othermarshes in the Pacific Northwest suggests somebroad similarities in foraminiferal distributions,but also reveals some important contrasts. Variationsin marsh zone foraminiferal assemblagesand position relative to mean tide level are presumablydue to differences in marsh characteristics,including freshwater influence, sedimentationrates and substrate texture, and to differencesin the sampling and statistical techniquesused to define biofacies. On the marshes includedin this study, foraminiferal biofaciesanalysis has the potential to estimate paleoelevationsof subsurface deposits with an accuracyranging from 0.05-0.45m. Potential use of biofaciesanalysis to estimate coseismic subsidenceon these marshes is more limited: Gibson Spitmarsh lacks a sufficient number of biofacies andat Sooke River marsh, coseismic subsidencewould had to have been unrealistically large forthis technique to be applicable. Only at DiscoveryBay does this approach have possible utility--here coseismic subsidence on the order 0.1-0.56m could potentially be detected. A review offoraminiferal distributions in marshes of the PacificNorthwest suggests that foraminiferalanalysis does have the potential to aid in identifyingtsunami layers in high marsh depositsthroughout the region.90