Journal ArticleDOI
Foraminiferal assemblages in a hypersaline lagoon, araruama (r.j.) brazil
Jean-Pierre Debenay,Emmanuelle Geslin,Beatriz Beck Eichler,Wania Duleba,Florence Sylvestre,Patrícia Pinheiro Beck Eichler +5 more
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Foraminiferal assemblages were studied in 93 samples collected in the lagoon of Araruama and in the adjacent area as discussed by the authors, with a salinity range of 52-65 ‰.Abstract:
Foraminiferal assemblages were studied in 93 samples collected in the lagoon of Araruama and in the adjacent area. The lagoon of Araruama is one of the largest hypersaline lagoons in the world, with a salinity range of 52–65 ‰. Historical reports show that the lagoon has been hypersaline since at least the 16th century. Foraminiferal assemblages are dominated by miliolids, mainly Triloculina oblonga, and rotaliids, with Ammonia tepida and the less abundant Cribroelphidium excavatum var. selseyense . Textulariids are almost absent. This assemblage is similar to those usually reported from hypersaline lagoons with sandy carbonate-rich sediments and from salt marshes. A high proportion of aberrant tests was observed. Anthropogenic stresses do not seem to be responsible for these morphological abnormalities, which are attributed to high salinity conditions and to changes of salinity. However, the higher proportion of Ammonia tepida in the more impacted northern part of the lagoon is probably due to human impact.read more
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Ecology and Applications of Benthic Foraminifera
TL;DR: This book presents the ecological background required to explain how fossil forms are used in dating rocks and reconstructing past environmental features including changes of sea level and demonstrates how living foraminifera can be used to monitor modern-day environmental change.
BookDOI
Adaptation to life at high salt concentrations in archaea, bacteria, and eukarya
TL;DR: This paper presents a comparative genomic survey of information transfer systems in two diverse extremely halophilic Archaea, Halobacterium sp.
Journal ArticleDOI
Benthic foraminifera for heavy metal pollution monitoring: A case study from the central Adriatic Sea coast of Italy
TL;DR: In this paper, a study of living benthic foraminifera was carried out in 42 sediment samples collected from the central Adriatic coast of Italy, and heavy metal concentrations were investigated both with bivariate (correlation matrix) and multivariate techniques of principal component analysis (PCA) and cluster analysis.
Journal ArticleDOI
Benthic foraminifera as bioindicators of pollution: A review of Italian research over the last three decades
TL;DR: In this paper, the authors reveal that Italian experience has significantly contributed to the advancement of this topic and summarizes the most important results that have served to greatly improve our knowledge in this field.
Journal ArticleDOI
Benthic foraminifera as bio-indicators of trace element pollution in the heavily contaminated Santa Gilla lagoon (Cagliari, Italy).
Fabrizio Frontalini,Carla Buosi,Stefania Da Pelo,Rodolfo Coccioni,Antonietta Cherchi,Carla Bucci +5 more
TL;DR: A study of benthic foraminiferal assemblages was carried out into sediment samples collected from the Santa Gilla lagoon (Sardinia, Italy), revealing a distinct separation of both the highly polluted and less polluted sampling sites.
References
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Journal ArticleDOI
Brazos River bar [Texas]; a study in the significance of grain size parameters
Robert L. Folk,William C. Ward +1 more
TL;DR: In this paper, a bar on the Brazos River near Calvert, Texas, has been analyzed in order to determine the geologic meaning of certain grain size parameters and to study the behavior of the size fractions with transport.
Book
Foraminiferal Genera and Their Classification
Alfred R. Loeblich,Helen Tappan +1 more
TL;DR: Systematic descriptions of family group taxa based on genera of uncertain status and available family-group names used for foraminifera and genera erroneously regarded as foraminifers.
Journal ArticleDOI
Nomenclature Based on Sand-silt-clay Ratios
TL;DR: In this paper, an attempt is made to standardize nomenclature of sediment types relative to sand, silt, and clay content, and a triangle diagram with boundaries between types is submitted and compared with other systems which have been used for the purpose.