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Cyclostratigraphic calibration of the Famennian stage from core H32 (Late Devonian, Illinois Basin, USA)
No full textElemental and macromolecular content of marine diatoms and prasinophytes
No full textThis dataset characterizes the elemental and macromolecular content in cultures of two marine diatoms (Thalassiosira pseudonana, Thalassiosira weissflogii) and two marine prasinophytes (Ostreococcus tauri, Micromonas sp.). For each of these four species, the total cellular content of carbon, nitrogen, phosphorus, protein, carbohydrate, lipid, RNA, DNA, phospholipid, and pigments are shown at several sampling points ranging from nitrogen-replete to nitrogen-starved growth conditions
Stress-strain data of wet sample s01 under uniaxial compression from the Three Gorges Reservoir, China
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Optical micrographs and digrams from Acoustic Emission and P-wave velocity measurement of sandstone from the Three Gorges Reservoir, China
No full textAssociation patterns among physical, chemical and microbiological indicators of springs in Rio Grande do Sul, Brazil
No full textConcern about the quality of water consumed by rural communities leads to caution regarding the interference of variables in potability. This study aimed to verify the linear association between physical, chemical and microbiological variables of water from springs. The research was developed from two seasons of spring water sample collections evaluating physical and chemical variables such as temperature, pH, turbidity, electrical conductivity total alkalinity, total hardness, total ammonia, nitrite, nitrate, true and apparent colors, total phosphorus, fluoride and total iron, and microbiological variables: total coliforms and Escherichia coli. The variablesʼ total alkalinity, total hardness and electrical conductivity have a strong positive correlation among them, similar to what occurs with the variablesʼ turbidity, apparent color, true color and total iron, between nitrite and total iron, and between turbidity and total coliforms. These correlations occur as a function of the interaction that water has with the soil and with the compounds found, thus altering the quality.
Water sample collections occurred twice in the same year - 2019.Temperature and pH analyses (portable pHmeter pHEP®4 Hanna) were performed "in loco". In the laboratory, the analysis and methods according to APHA et al. (2012) were: Turbidity (NTU), Electrical conductivity (µS/cm), Total alkalinity (mg/L CaCO3) and Total hardness (mg/L CaCO3), Total Ammonia (mg/L N-NH3) and Nitrate (mg/L N-NO3-), True and Apparent colors (HU), Nitrite (mg/L N-NO2-), Total phosphorus (P) (mg/L P), Fluoride (F-) (mg/L F-) and Total iron (Fe) (mg/L Fe), Total Coliforms and Escherichia coli (MPN-more probable number/100 mL)
High-resolution mapping of ice cover changes in over 33,000 lakes across the North Temperate Zone
No full textWidespread reductions in lake ice have been detected recently worldwide, yet spatially detailed characterization of global lake ice is currently unavailable. Using 0.55 million Landsat satellite images from 1985 to 2020, we provide the first long-term wall-to-wall mapping of lake ice cover over the entire Northern Temperate Zone, comprising >33,000 lakes representing 48% of the global lake area in total
Foraminiferal I/Ca Measurements from Miocene Sediments
No full textThe foraminiferal iodine-to-calcium proxy (I/Ca) can be used to reconstruct regional iodine speciation and redox conditions. This dataset contains new foraminiferal I/Ca measurements from Miocene sediments samples from ODP Site 202-1237, ODP Site 154-926, IODP Site 321-U1337 and IODP Site 321-U1338. These samples overlap with the climate event known as the Miocene Climatic Optimum. The aim of this work is to examine the geography of oxygen deficient zones in the tropical Pacific and Atlantic Oceans during the mid-Miocene.
This dataset has been carefully reviewed and curated in accordance with PANGAEA's exceptionally high quality standards. However, due to discontinued communication from the authors' side, it did not receive the usual formal approval by the authors and therefore lacks final scientific validation