| Abstract: | The Palaeocene-Eocene Thermal Maximum (PETM) is recognized as a significant climatic event in the Cenozoic era, marked by negative carbon excursions, rapid warming, and ocean acidification. However, stable isotope analysis of carbonates poses challenges due to diagenesis. This repository presents a comprehensive study of diagenetic features within the Zranda section, which represents shallow carbonates of the eastern Tethys. Through meticulous examination, this dataset facilitates the identification of minimally affected samples, enhancing their suitability for stable carbon isotope analysis. […] |
| Size: | 170 data points |
| Abstract: | The Palaeocene-Eocene Thermal Maximum (PETM) is recognized as a significant climatic event in the Cenozoic era, marked by negative carbon excursions, rapid warming, and ocean acidification. However, stable isotope analysis of carbonates poses challenges due to diagenesis. This repository presents a comprehensive study of diagenetic features within the Zranda section, which represents shallow carbonates of the eastern Tethys. Through meticulous examination, this dataset facilitates the identification of minimally affected samples, enhancing their suitability for stable carbon isotope analysis. […] |
| Size: | 874 data points |
| Abstract: | The Palaeocene Eocene Thermal Maximum (PETM) is a well-studied event globally, yet it has received limited attention in the central eastern Tethys region. This study focuses on assessing the PETM's impacts on Larger Benthic Foraminifera (LBF) within this understudied area. Combining LBF analysis with microfacies examination, we investigate the Dungan Formation at the Zranda section, representing a crucial segment of the central eastern Tethys. Our findings explore the effects of PETM on marine ecosystems in this region and contribute to a broader understanding of paleoenvironmental changes during this significant climatic event. Thin sections (30 micron thickness) were prepared from the rock samples using standard preparation techniques (Miller, 1988) prior to petrographic and biostratigraphic investigation. All thin sections were examined under a polarizing microscope. […] |
| Size: | 885 data points |
| Abstract: | This dataset contains annual oceanographic observations collected at the AWIPEV underwater observatory (78°54.200′ N, 11°54.000′ E; WGS84) from 2012 onwards. Measurements include water temperature, salinity, oxygen saturation, chlorophyll-a concentration, and turbidity. The observatory is located at a water depth of approximately 12 m (± tidal variation) and is equipped with one or more sensors for each measured parameter. Observations are recorded at an hourly temporal resolution. All data have undergone quality control using the four-step plausibility and quality assurance procedure described by Waldmann et al. (2022). The cabled observatory infrastructure comprises single or multiple sensors for each parameter and enables continuous long-term environmental monitoring in Kongsfjorden, Svalbard. […] |
| Size: | 13 datasets |
| Abstract: | This dataset documents seasonal heavy metal bioaccumulation in two commercially important edible freshwater fish species, Labeo rohita (Rohu) and Cirrhinus mrigala (Mrigal carp), collected from Head Panjnad, Punjab, Pakistan (29.3464 °N, 71.0197 °E), during summer and winter seasons of 2022. Head Panjnad represents the confluence zone of the major Punjab rivers and forms an important hydrological transition between the upper and lower Indus Basin. Fish specimens were collected from multiple locations near the Panjnad headworks, and concentrations of lead (Pb), nickel (Ni), and cadmium (Cd) were quantified in liver, gill, and muscle tissues using acid digestion followed by Atomic Absorption Spectrometry (AAS). Metal concentrations are reported as mean ± standard deviation on a wet weight basis (mg/kg ww). Across both species and seasons, bioaccumulation followed the order liver > gill > muscle, while metal abundance followed the pattern Pb > Ni > Cd. […] |
| Size: | 86 data points |
| Abstract: | This dataset provides geo-referenced measurements of microplastic (MP) occurrence, abundance, morphological characterization, and FTIR polymer identification across three environmental matrices — surface water, riverbed sediment, and gastrointestinal tracts (GIT) of the freshwater catfish (Wallago attu Bloch & Schneider, 1801) — collected from Head Panjnad, Punjab, Pakistan (29.347842° N, 71.028484° E) in 2023. Head Panjnad represents the confluence of all five major Punjab rivers (Jhelum, Chenab, Ravi, Beas, and Sutlej), constituting a key node of the Indus River Basin. Ten specimens of W. attu were morphometrically characterized and their GITs examined for MPs. Parallel water and sediment samples (n = 10 each) were processed through KOH/HNO₃ digestion, Whatman filtration, and stereomicroscopy, with polymer identity confirmed by FTIR spectroscopy. Mean GIT MP burden was 12.08 ± 3.47 items/individual. Surface water MP concentration averaged 79.42 ± 17.82 items/m³. […] |
| Size: | 47 data points |
| Abstract: | This dataset documents seasonal heavy metal bioaccumulation in two commercially important edible freshwater fish species, Labeo rohita (Rohu) and Cirrhinus mrigala (Mrigal carp), collected from Head Panjnad, Punjab, Pakistan (29.3464 °N, 71.0197 °E), during summer and winter seasons of 2022. Head Panjnad represents the confluence zone of the major Punjab rivers and forms an important hydrological transition between the upper and lower Indus Basin. Fish specimens were collected from multiple locations near the Panjnad headworks, and concentrations of lead (Pb), nickel (Ni), and cadmium (Cd) were quantified in liver, gill, and muscle tissues using acid digestion followed by Atomic Absorption Spectrometry (AAS). Metal concentrations are reported as mean ± standard deviation on a wet weight basis (mg/kg ww). Across both species and seasons, bioaccumulation followed the order liver > gill > muscle, while metal abundance followed the pattern Pb > Ni > Cd. […] |
| Size: | 3 datasets |
| Abstract: | This dataset provides geo-referenced measurements of microplastic (MP) occurrence, abundance, morphological characterization, and FTIR polymer identification across three environmental matrices — surface water, riverbed sediment, and gastrointestinal tracts (GIT) of the freshwater catfish (Wallago attu Bloch & Schneider, 1801) — collected from Head Panjnad, Punjab, Pakistan (29.347842° N, 71.028484° E) in 2023. Head Panjnad represents the confluence of all five major Punjab rivers (Jhelum, Chenab, Ravi, Beas, and Sutlej), constituting a key node of the Indus River Basin. Ten specimens of W. attu were morphometrically characterized and their GITs examined for MPs. Parallel water and sediment samples (n = 10 each) were processed through KOH/HNO₃ digestion, Whatman filtration, and stereomicroscopy, with polymer identity confirmed by FTIR spectroscopy. Mean GIT MP burden was 12.08 ± 3.47 items/individual. Surface water MP concentration averaged 79.42 ± 17.82 items/m³. […] |
| Size: | 34 data points |
| Abstract: | This dataset provides geo-referenced measurements of microplastic (MP) occurrence, abundance, morphological characterization, and FTIR polymer identification across three environmental matrices — surface water, riverbed sediment, and gastrointestinal tracts (GIT) of the freshwater catfish (Wallago attu Bloch & Schneider, 1801) — collected from Head Panjnad, Punjab, Pakistan (29.347842° N, 71.028484° E) in 2023. Head Panjnad represents the confluence of all five major Punjab rivers (Jhelum, Chenab, Ravi, Beas, and Sutlej), constituting a key node of the Indus River Basin. Ten specimens of W. attu were morphometrically characterized and their GITs examined for MPs. Parallel water and sediment samples (n = 10 each) were processed through KOH/HNO₃ digestion, Whatman filtration, and stereomicroscopy, with polymer identity confirmed by FTIR spectroscopy. Mean GIT MP burden was 12.08 ± 3.47 items/individual. Surface water MP concentration averaged 79.42 ± 17.82 items/m³. […] |
| Size: | 26 data points |
| Abstract: | This dataset provides geo-referenced measurements of microplastic (MP) occurrence, abundance, morphological characterization, and FTIR polymer identification across three environmental matrices — surface water, riverbed sediment, and gastrointestinal tracts (GIT) of the freshwater catfish (Wallago attu Bloch & Schneider, 1801) — collected from Head Panjnad, Punjab, Pakistan (29.347842° N, 71.028484° E) in 2023. Head Panjnad represents the confluence of all five major Punjab rivers (Jhelum, Chenab, Ravi, Beas, and Sutlej), constituting a key node of the Indus River Basin. Ten specimens of W. attu were morphometrically characterized and their GITs examined for MPs. Parallel water and sediment samples (n = 10 each) were processed through KOH/HNO₃ digestion, Whatman filtration, and stereomicroscopy, with polymer identity confirmed by FTIR spectroscopy. Mean GIT MP burden was 12.08 ± 3.47 items/individual. Surface water MP concentration averaged 79.42 ± 17.82 items/m³. […] |
| Size: | 189 data points |