The spatial distribution of benthic foraminiferal assemblage of Nayband Bay and Haleh Estuary in the North-West of the Persian Gulf, was explored during 2011-2012 . The relationship between spatial pattern of foraminifera assemblages and the ambient factors (i.e. water temperature, salinity, pH, dissolved oxygen, sediment grain size distribution, sediment organic content, and CaCO3 concentrati...

The Asmari Formation was deposited in the foreland basin of southwest Iran (Zagros Basin). Carbonate sequences of the Asmari Formation consist mainly of large benthic foraminifera along with other skeletal and non-skeletal components. Three assemblage zones have been recognized by distribution of these large foraminifera in the study area that indicate Oligocene age (Rupelian-Chattian). Absence...

Foraminifera are single-celled marine organisms that construct shells remain as fossils in the sediments. Classifying and counting these important paleo-oceanographic -climatological research. However, identification process has been performed manually since 1800s is laborious time-consuming. In this work, we present a deep learning-based instance segmentation model for classifying, detecting, ...

Abstract. Photosynthetically active foraminifera are prolific carbonate producers in warm, sunlit, surface waters of the oceans. Foraminifera have repeatedly developed mixotrophic strategies (i.e., ability an organism or holobiont to both feed and photosynthesize) by facultative obligate endosymbiosis with microalgae sequestering plastids (kleptoplasts) ingested algae. Mixotrophy provides acces...

Benthic foraminifera are single-celled eukaryotes that make a protective organic, agglutinated or calcareous test. Some agglutinated, single-chambered taxa, including Psammophaga Arnold, 1982, retain mineral particles in their cytoplasm, but the selective mechanism of accumulation is not clear. Here, we report the ability of a foraminiferal species to select and accumulate zircons and other hea...

We studied Upper Cretaceous and Lower Paleogene benthic foraminifera from the Agost section (southeastern Spain) to infer paleobathymetrical changes and paleoenvironmental turnover across the Cretaceous/Paleogene (K/P) transition. Benthic foraminifera indicate uppermost bathyal depths at Agost during the Abathomphalus mayaroensis Biochron (from about 400 kyr before the K/P boundary) through the...

We studied Upper Cretaceous and Lower Paleogene benthic foraminifera from the Agost section (southeastern Spain) to infer paleobathymetrical changes and paleoenvironmental turnover across the Cretaceous/Paleogene (K/P) transition. Benthic foraminifera indicate uppermost bathyal depths at Agost during the Abathomphalus mayaroensis Biochron (from about 400 kyr before the K/P boundary) through the...

A síntese de materiais para retenção e/ou pré-concentração de espécies de interesse clínico e ambiental, como íons metálicos, constitui uma importante área de pesquisa atual. Neste trabalho, descrevemos a síntese de diferentes suportes sólidos de antraceno sulfeto de fosfina para préconcentração de Cu(II) e Pb(II). As propriedades sensoras destes materiais também foram avaliadas usando a aborda...