cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.983463
title: Electromagnetic induction measurements with the vertically oriented dipole of the CMD Mini Explorer (32 cm transmitter-receiver spacing) taken in June 2024 in the Lower Havel Inner Delta near Lake Gülpe, Brandenburg (Germany)

description: Electromagnetic induction (EMI) was measured with a CMD-Mini Explorer (GF Instruments s.r.o., Brno, Czech Republic) in June 2024. We used the vertical dipole (VDP) at coil spacings of 0.32 m (VDP1), 0.71 m (VDP2) and 1.18 m (VDP3), archieving effective penetration depths of 0.5 m (VDP1), 1.0 m (VDP2) and 1.8 m (VDP3). According to the manufacturer, 70% of the signal originate from above these depths. The EMI sensors measure the apparent electrical conductivity (ECa, in mS/m). Measurements were taken by carrying the instrument about 0.2 m above ground while being directly connected to D-GPS (Leica GPS1200) for positioning. The acquisition rate was five measurements per second. Data quality was checked by measuring a reference line before and after each measurement. The area investigated by EMI in June 2024 is located southeast of the research station. The survey area there is 8.1 ha in size. The reference line for the measurements there was located in the north-westernmost area of the site. No drift correction had to be applied due to good data quality. Reference lines and single outliers were removed.The data set contains the EMI data with an intercoil spacing of 0.32 m.
DOI: 10.1594/pangaea.983464
title: Electromagnetic induction measurements with the vertically oriented dipole of the CMD Mini Explorer (71 cm transmitter-receiver spacing) taken in June 2024 in the Lower Havel Inner Delta near Lake Gülpe, Brandenburg (Germany)

description: Electromagnetic induction (EMI) was measured with a CMD-Mini Explorer (GF Instruments s.r.o., Brno, Czech Republic) in June 2024. We used the vertical dipole (VDP) at coil spacings of 0.32 m (VDP1), 0.71 m (VDP2) and 1.18 m (VDP3), archieving effective penetration depths of 0.5 m (VDP1), 1.0 m (VDP2) and 1.8 m (VDP3). According to the manufacturer, 70% of the signal originate from above these depths. The EMI sensors measure the apparent electrical conductivity (ECa, in mS/m). Measurements were taken by carrying the instrument about 0.2 m above ground while being directly connected to D-GPS (Leica GPS1200) for positioning. The acquisition rate was five measurements per second. Data quality was checked by measuring a reference line before and after each measurement. The area investigated by EMI in June 2024 is located southeast of the research station. The survey area there is 8.1 ha in size. The reference line for the measurements there was located in the north-westernmost area of the site. No drift correction had to be applied due to good data quality. Reference lines and single outliers were removed.The data set contains the EMI data with an intercoil spacing of 0.71m.
DOI: 10.1594/pangaea.983465
title: Electromagnetic induction measurements with the vertically oriented dipole of the CMD Mini Explorer (118 cm transmitter-receiver spacing) taken in June 2024 in the Lower Havel Inner Delta near Lake Gülpe, Brandenburg (Germany)

description: Electromagnetic induction (EMI) was measured with a CMD-Mini Explorer (GF Instruments s.r.o., Brno, Czech Republic) in June 2024. We used the vertical dipole (VDP) at coil spacings of 0.32 m (VDP1), 0.71 m (VDP2) and 1.18 m (VDP3), archieving effective penetration depths of 0.5 m (VDP1), 1.0 m (VDP2) and 1.8 m (VDP3). According to the manufacturer, 70% of the signal originate from above these depths. The EMI sensors measure the apparent electrical conductivity (ECa, in mS/m). Measurements were taken by carrying the instrument about 0.2 m above ground while being directly connected to D-GPS (Leica GPS1200) for positioning. The acquisition rate was five measurements per second. Data quality was checked by measuring a reference line before and after each measurement. The area investigated by EMI in June 2024 is located southeast of the research station. The survey area there is 8.1 ha in size. The reference line for the measurements there was located in the north-westernmost area of the site. No drift correction had to be applied due to good data quality. Reference lines and single outliers were removed.The data set contains the EMI data with an intercoil spacing of 1.18 m.
DOI: 10.1594/pangaea.983485
title: Sediment analyses (pH, electrical conductivity, mag. susceptibility, loss on ignition, remission) from the Araplı catchment in the Pergamon Micro-Region, western Turkey

description: The dataset was collected from seven sediment cores along a transect spanning the Araplı alluvial fan, east of ancient Pergamon, in the eastern lower Bakırçay plain, Pergamon micro-region, Türkiye. The cores were taken, described, sampled, and analyzed in the field and at the Bergama excavation house in October 2023. The soil description was conducted after Schoeneberger et al. (2002). Sediment samples were taken at irregular intervals and orientated along layer boundaries; samples include 3 cm of sediment in fine earth and 5 cm in gravelly material. Reported sample depths are simplified and given by their mean depth. Samples (n = 293) were analyzed for pH value, electrical conductivity, gravel content (sieve separate &lt; 2 mm and &gt; 2 mm), remission (sediment color using a spectrophotometer), loss on ignition (LOI, at 550 °C and 900 °C) after Dean (1974), and mass-specific magnetic susceptibility (calculated according to Dearing, 1994).
DOI: 10.1594/pangaea.984070
title: Sedimentation rates from sediment traps and SediMeter sensors in Avillion Admiral Cove Marina, Port Dickson, Malaysia (October 2011–January 2012)

description: This dataset includes sedimentation rate measurements obtained using cylindrical Sediment Traps (STs) deployed concurrently with SediMeter (SM) sensors at Avillion Admiral Cove Marina, Port Dickson, Malaysia. Deployments occurred from October 2011 to January 2012. Each ST was installed upright, stabilized with angle bars, and located 2 meters above the seabed. Sediment samples collected in ST bottles were analyzed gravimetrically after filtration and drying. Sedimentation rates (mg cm⁻² day⁻¹) were computed by dividing the dry weight of collected sediments by the trap area and deployment duration. The average accumulation rate was 16.87 mg cm⁻² day⁻¹. This dataset was collected to compare sedimentation rates measured directly by STs and indirectly by adjacent SM sensors. The dataset's significance lies in addressing discrepancies between traditional sediment trap methods and sensor-based turbidity measurements, providing insights into sediment fluxes and accumulation processes in low-energy marina settings.
DOI: 10.1594/pangaea.983486
title: Radiocarbon age of seven cores from the Araplı catchment in the Pergamon Micro-Region, western Turkey

description: The dataset was collected from seven sediment cores along a transect spanning the Araplı alluvial fan, east of ancient Pergamon, in the eastern lower Bakırçay plain, Pergamon micro-region, Türkiye. The cores were taken, described, sampled, and analyzed in the field and at the Bergama excavation house in October 2023. Sediment samples were taken at irregular intervals and orientated along layer boundaries; samples include 3 cm of sediment in fine earth and 5 cm in gravelly material. Reported sample depths are simplified and given by their mean depth. Results of radiocarbon dating of samples taken from the cores are presented.
DOI: 10.1594/pangaea.931743
title: Relative abundances of ostracoda and foraminifera from Keta Lagoon and Densu Estuary, Ghana
DOI: 10.1594/pangaea.985069
title: Results of direct shear experiments on intact and powdered samples from the submarine flank of Kilauea volcano (Hawaii, USA): Experiment descriptions

description: We performed laboratory friction experiments on simulated fault gouges and intact samples from the submarine flank of Kilauea volcano (Hawaii, USA) and measured the velocity-dependence of friction in velocity-step tests. Moreover, we have directly measured cohesion on the fault gouge and intact samples from Kilauea's submarine flank. The experiments were carried out using a single-direct shear device at room temperature. For the shearing tests, the samples simulating fault gouge were crushed and sieved to a grain size of &lt; 125 µm. The intact samples were tested as mini-cores. All experiments were carried out under fluid-saturated conditions (3.5 % NaCl brine) and under an effective normal load of 10 MPa.
DOI: 10.1594/pangaea.986726
title: Grain size, dry bulk density and organic carbon from samples of sediment cores retrieved in Finnish lakes

description: This data set consists of environmental and geochemical information obtained from samples of 27 sediment cores collected from the vegetated shoreline of three lakes in Finland (Kallavesi, Vesijärvi and Oulujärvi). The sampling campaign occurred in August 2023. From the sediment samples, we measured wet and dry weights, grain size, organic matter content and total organic carbon, that were used to study sedimentary organic carbon stocks and their drivers.
DOI: 10.1594/pangaea.942564
title: Raw pollen counts of soil samples from lake Tenndammen

description: Lycopodium addad, number of spores in a tablette: 20848Volume, ml: 3
DOI: 10.1594/pangaea.942562
title: Raw pollen counts of sedimetn core Te2019

description: Lycopodium addad: 20848Volume: 3 ml
DOI: 10.1594/pangaea.942566
title: Numbers of pollen grains counted vs. taxa registered within the microslide (mean numbers)
DOI: 10.1594/pangaea.955875
title: Stable oxagen isotope ratios of benthic foraminifera of sediment core SO202/1_37-2

description: Benthic oxygen isotopes were measured on a Thermo Finnigan MAT 253 isotope ratio mass-spectrometer coupled to an automated KIEL IV CARBO preparation device.
DOI: 10.1594/pangaea.955876
title: Stable oxagen isotope ratios of benthic foraminifera of sediment core SO264_55-1

description: Benthic oxygen isotopes were measured on a Thermo Finnigan MAT 253 isotope ratio mass-spectrometer coupled to an automated KIEL IV CARBO preparation device.
DOI: 10.1594/pangaea.986955
title: Fatty acid composition (mass %) of sea ice algal communities in Hudson Bay (Southampton Island)

description: A spring bloom of algae in or underneath sea ice provides a concentrated food source for aquatic grazers and contributes significantly to marine primary production in many regions of the Arctic. Various types of trophic markers are commonly used to analyze food web structure, based on numerous assumptions about how sea ice algae differ biochemically from phytoplankton. Changes associated with polar amplification of global warming have the potential to affect the phenology, taxonomic composition, productivity, and nutritional value of sea ice algal blooms, which are usually dominated by diatom species. Such changes are likely to have far-reaching effects on trophic interactions and carbon cycling in the ocean. The production of lipids and stable isotope biomarkers by marine algae can vary significantly depending on environmental factors such as snow depth, ice thickness, nutrient availability, and water depth. For example, concentrations of polyunsaturated fatty acids (PUFAs) in ice algae decreased with decreasing nutrient concentrations, and 16:0/16:1 (n-7) fatty acids were highly enriched in 13C in our 2019 study in northwestern Hudson Bay, Southampton Island (possibly as a result of DIC limitation). Data on stable isotope values of fatty acids in ice algae are particularly scarce, so we provide an important information base for future Bayesian isotope mixing models.
DOI: 10.1594/pangaea.986965
title: Fatty acid composition (µg/ml) of sea ice algal communities in Hudson Bay (Southampton Island)

description: A spring bloom of algae in or underneath sea ice provides a concentrated food source for aquatic grazers and contributes significantly to marine primary production in many regions of the Arctic. Various types of trophic markers are commonly used to analyze food web structure, based on numerous assumptions about how sea ice algae differ biochemically from phytoplankton. Changes associated with polar amplification of global warming have the potential to affect the phenology, taxonomic composition, productivity, and nutritional value of sea ice algal blooms, which are usually dominated by diatom species. Such changes are likely to have far-reaching effects on trophic interactions and carbon cycling in the ocean. The production of lipids and stable isotope biomarkers by marine algae can vary significantly depending on environmental factors such as snow depth, ice thickness, nutrient availability, and water depth. For example, concentrations of polyunsaturated fatty acids (PUFAs) in ice algae decreased with decreasing nutrient concentrations, and 16:0/16:1 (n-7) fatty acids were highly enriched in 13C in our 2019 study in northwestern Hudson Bay, Southampton Island (possibly as a result of DIC limitation). Data on stable isotope values of fatty acids in ice algae are particularly scarce, so we provide an important information base for future Bayesian isotope mixing models.
DOI: 10.1594/pangaea.986992
title: Highly branched isoprenoids and main sterols of sea ice algal communities in Hudson Bay (Southampton Island)

description: A spring bloom of algae in or underneath sea ice provides a concentrated food source for aquatic grazers and contributes significantly to marine primary production in many regions of the Arctic. Various types of trophic markers are commonly used to analyze food web structure, based on numerous assumptions about how sea ice algae differ biochemically from phytoplankton. Changes associated with polar amplification of global warming have the potential to affect the phenology, taxonomic composition, productivity, and nutritional value of sea ice algal blooms, which are usually dominated by diatom species. Such changes are likely to have far-reaching effects on trophic interactions and carbon cycling in the ocean. The production of lipids and stable isotope biomarkers by marine algae can vary significantly depending on environmental factors such as snow depth, ice thickness, nutrient availability, and water depth. For example, concentrations of polyunsaturated fatty acids (PUFAs) in ice algae decreased with decreasing nutrient concentrations, and 16:0/16:1 (n-7) fatty acids were highly enriched in 13C in our 2019 study in northwestern Hudson Bay, Southampton Island (possibly as a result of DIC limitation). Data on stable isotope values of fatty acids in ice algae are particularly scarce, so we provide an important information base for future Bayesian isotope mixing models.
DOI: 10.1594/pangaea.986995
title: Isotopic composition of fatty acids derived from sea ice algal communities in Hudson Bay (Southampton Island)

description: A spring bloom of algae in or underneath sea ice provides a concentrated food source for aquatic grazers and contributes significantly to marine primary production in many regions of the Arctic. Various types of trophic markers are commonly used to analyze food web structure, based on numerous assumptions about how sea ice algae differ biochemically from phytoplankton. Changes associated with polar amplification of global warming have the potential to affect the phenology, taxonomic composition, productivity, and nutritional value of sea ice algal blooms, which are usually dominated by diatom species. Such changes are likely to have far-reaching effects on trophic interactions and carbon cycling in the ocean. The production of lipids and stable isotope biomarkers by marine algae can vary significantly depending on environmental factors such as snow depth, ice thickness, nutrient availability, and water depth. For example, concentrations of polyunsaturated fatty acids (PUFAs) in ice algae decreased with decreasing nutrient concentrations, and 16:0/16:1 (n-7) fatty acids were highly enriched in 13C in our 2019 study in northwestern Hudson Bay, Southampton Island (possibly as a result of DIC limitation). Data on stable isotope values of fatty acids in ice algae are particularly scarce, so we provide an important information base for future Bayesian isotope mixing models.
DOI: 10.1594/pangaea.986998
title: Environmental characteristics of sea ice algal (bloom) communities in Hudson Bay (Southampton Island)

description: A spring bloom of algae in or underneath sea ice provides a concentrated food source for aquatic grazers and contributes significantly to marine primary production in many regions of the Arctic. Various types of trophic markers are commonly used to analyze food web structure, based on numerous assumptions about how sea ice algae differ biochemically from phytoplankton. Changes associated with polar amplification of global warming have the potential to affect the phenology, taxonomic composition, productivity, and nutritional value of sea ice algal blooms, which are usually dominated by diatom species. Such changes are likely to have far-reaching effects on trophic interactions and carbon cycling in the ocean. The production of lipids and stable isotope biomarkers by marine algae can vary significantly depending on environmental factors such as snow depth, ice thickness, nutrient availability, and water depth. For example, concentrations of polyunsaturated fatty acids (PUFAs) in ice algae decreased with decreasing nutrient concentrations, and 16:0/16:1 (n-7) fatty acids were highly enriched in 13C in our 2019 study in northwestern Hudson Bay, Southampton Island (possibly as a result of DIC limitation). Data on stable isotope values of fatty acids in ice algae are particularly scarce, so we provide an important information base for future Bayesian isotope mixing models.
DOI: 10.1594/pangaea.957411
title: Archaeobotanical analyses (seed/fruit remains) at Pou Nou-2, Sant Pere Molanta, Barcelona, Spain - samples

description: Several sediment samples from one pit (underneath a burial layer) dated around 4200-4000 BC and excavated in 1993 have been analysed. Vicente López carried out the on-site sampling and treated the samples by flotation (minimum mesh size of 0,25mm). In 2015, additional samples (14 litres of sediment in total) kept at the Museum of Vilafranca del Penedès (Vinseum) were also processed by flotation and wash-over by Raul Soteras, Hector Martínez and Aitor Labajo. The archaeobotanical analysis was performed by Ferran Antolín.
DOI: 10.1594/pangaea.957770
title: Archaeobotanical analysis of seeds and fruits from Cova del Toll, Moià (Barcelona, Spain) - samples

description: Materials retrieved in the 1978-1979 campaigns at the site of Cova del Toll were given to Prof. Maria Hopf for analysis. Since no full quantification was provided and no report was available, the material was recently revised by Ferran Antolín. From the recovered remains, it seems that some sediment from different layers excavated was dry-sieved and some larger grains were sorted out. Most of the recovered material dates to the second half of the 5th millennium cal BC. 22 samples were analysed from 7 different squares -arbitrary division of the excavated surface- (N34-35, K17, M43, B107-D104, B107-E104, D104, E104, D104-E104) separated int 11 layers/sublayers (C1, C1b, C1d, C2, C3, C3b, C3c, C4, C5, C5b, C5d). Layers C1, C1b i C1d belong to the Bronze Age, Layer C2 is connected to a Bell Beaker phase and the rest (C3 and C5) are considered Postcardial Neolithic dated to the second half of the 5th millennium cal BC.
DOI: 10.1594/pangaea.986687
title: Isotope composite of ODP Site 175-1085
DOI: 10.1594/pangaea.986688
title: Adjusted depth lookup data from ODP Site 175-1085
DOI: 10.1594/pangaea.987810
title: Tidepool characteristics of nudibranch habitat in Southern California

description: Nudibranchs, sea slugs belonging to the Mollusca phylum, reside in rocky intertidal ecosystems worldwide. These intertidal ecosystems are facing significant impacts of climate change, including, in the Eastern Pacific Ocean, an increase in the frequency and severity of El Niño Southern Oscillation (ENSO) weather events. While most organisms are negatively affected by the warm waters that accompany ENSOs, nudibranchs have documented population booms. They are also highly tolerant of thermal extremes, positioning them as important indicators of tidepool health. To address biotic and abiotic conditions that impact nudibranch presence, we investigated ecological factors that affect the microhabitat selection of nudibranchs in tidepools across Southern California in June 2022-January 2023 (ranging across 35.2589°N, 120.8975°W to 32.7269°N, 117.2562°W). We evaluated the environmental and habitat characteristics of 28 tidepools from each of ten field sites each during summer and winter. We also collected species richness data. Tidepool depth and bottom substrate were significantly correlated with nudibranch presence but not temperature. Nudibranchs were more likely to occur in tidepools without, rather than with, sea anemones. Here, we present the first documentation of multivariate abiotic and biotic interactions that influence nudibranch presence.
DOI: 10.1594/pangaea.987811
title: Thermal inertia of seaweeds in Southern California tidepools

description: Thermal microclimate in intertidal tidepools is driven largely by abiotic conditions (i.e., sun exposure, tidal height, air temperature, water temperature), but algae substrate cover can substantially ameliorate these conditions. In this study, we measured the thermal inertia of all seaweeds found at ten tidepool locations across Southern California in June 2022-January 2023 (ranging across 35.2589°N, 120.8975°W to 32.7269°N, 117.2562°W). A representative sample of each seaweed (no senescing portions; stalk must be included) at each site was collected by hand and transported in a cooler with water sourced from the site to Chapman University in Orange, CA. Transport time did not exceed 5 hours. We also collected a few rocks and a sand sample as control measurements. Once in the lab, the seaweeds were photographed and their wet weight and volume displacement were measured. Seaweeds were placed under a heat lamp for 30 minutes and their surface temperature was measured using a thermocouple probe every 10 minutes starting at time=0. Mass was measured at each time point as well as a control for water loss. Seaweeds were dried for 48 hours at 60°C for a final dry weight. Measurements of mass were used to calculate thermal inertia, which is the change in temperature over a set period of time as a function of mass.
DOI: 10.6084/m9.figshare.31343848
title: Table S2 from The evolution of proboscis length and feeding behavior in hawkmoths (Lepidoptera: Sphingidae)

description: Proboscis and forewing length measurements compiled from Hamilton et al. (2019), Kawahara (2007), and new measurements obtained from this study (length in mm).
DOI: 10.6084/m9.figshare.31343848.v1
title: Table S2 from The evolution of proboscis length and feeding behavior in hawkmoths (Lepidoptera: Sphingidae)

description: Proboscis and forewing length measurements compiled from Hamilton et al. (2019), Kawahara (2007), and new measurements obtained from this study (length in mm).