cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.899893
title: Elymus athericus encroachment experiment

description: The experiment was established in 2007 in the high marsh and consisted of four blocks of 12 m x 8 m. The blocks differed in surface-elevation change during the experiment. Each block was subdivided into 24 plots of 1 m x 1 m. The original elevation of all plots in relation to the German ordnance datum (NHN) was assessed at the start of the experiment. Plots within the blocks were randomly assigned to one of the three N-fertilisation treatments.Within each plot we planted five randomly chosen individuals of Elymus. After four years of treatment, the vegetation composition and cover was recorded in all plots and aboveground biomass was collected.
description: Supplement to: Nolte, Stefanie; Wanner, Antonia; Stock, Martin; Jensen, Kai (2019): Elymus athericus encroachment in Wadden Sea salt marshes is driven by surface-elevation change. Applied Vegetation Science, 22(3), 454-464
DOI: 10.1594/pangaea.827696
title: Table 1: Main characteristics of the BIOTA observatories included in this study & Table 3: Occurrence of termite taxa at the observatories

description: Termites are the most important soil ecosystem engineers of semi‐arid and arid habitats. They enhance decomposition processes as well as the subsequent mineralisation of nutrients by bacteria and fungi. Through their construction of galleries, nests and mounds, they promote soil turnover and influence the distribution of nutrients and also alter texture and hydrological properties of soils, thereby affecting the heterogeneity of their ecosystem. The main aim of the present thesis was to define the impact of termites on ecosys‐tem functioning in a semi‐arid ecosystem. In a baseline study, I assessed the diversity of termite taxa in relation to the amount of precipitation, the vegetation patterns and the land use systems at several sites in Namibia. Subsequently, I focussed on a species that is highly abundant in many African savannas, the fungus growing and mound building species Macro‐termes michaelseni (Sjöstedt, 1914). I asked how this species influences the spatial hetero‐geneity of soil and vegetation patterns. From repeated samplings at 13 sites in Namibia, I obtained 17 termite taxa of 15 genera. While the type of land use seems to have a minor effect on the termite fauna, the mean annual precipitation explained 96% and the Simpson index of vascular plant diversity 81% of the variation in taxa diversity. The number of termite taxa increased with both of these explanation variables. In contrast to former studies on Macrotermes mounds in several regions of Africa that I reviewed, soil analyses from M. michaelseni mounds in the central Namibian savanna revealed that they contain much higher nitrogen contents when compared to their parent material. Further analyses revealed that nitrate forms a major component of the nitrogen content in termite mounds. As nitrate solves easily in water, evaporation processes are most probably responsible for the transport of solved nitrates to the mound surface and their accumulation there. The analysed mounds in central Namibia contained higher sand propor‐tions compared to the mounds of the former studies. Through the higher percentage of coarse and middle sized pores, water moves more easily in sandy soils compared to more clayey soils. In consequence, evaporation‐driven nitrate accumulation can occur in the studied mounds at high rates. ff...
description: r: rare occurrence of the taxon at the Observatory; i.e. the taxon was not found during the standardized sampling, but during additional sampling.
description: Supplement to: Grohmann, Constanze (2010): Termite mediated heterogeneity of soil and vegetation patternsin a semi-arid savanna ecosystem in Namibia = Einfluss von Termiten auf Vegetations- und Bodenmuster eines semi-ariden Savannenökosystems in Namibia. Julius‐Maximilians‐Universität Würzburg, 100 pp
DOI: 10.1594/pangaea.882548
title: Mid Pleistocene isotopes analysis from ODP Site 165-999
DOI: 10.1594/pangaea.907931
title: Planktonic foraminifera census counts from the western South Atlantic

description: Planktonic foraminifera census data have been widely used to reconstruct changes in ocean ecosystems as well as ocean chemistry and circulation through calibration functions. Here we analyse new core‐top census data from 22 sites in the western South Atlantic, improving the geographical coverage and spatial resolution of the environmental gradients from the region covered by the Brazil–Malvinas Confluence (~38°S–53°W). We combine them with previous data to provide an up‐to‐date compilation of the western South Atlantic planktonic foraminifera–calibration data set. We study the relationship between the assemblages present in the core‐top samples and the most dynamic environmental variables from the region to establish the environmental variable(s) more resolved by the assemblages. Therefore, we develop and assess a new calibration function using the data set and testing several statistical models at different water depths. Our results reveal that the distribution and abundance of the species in the Brazil–Malvinas Confluence region mainly reflect the influence of two environmental variables: the mixed layer temperature and mixed layer depth (57% of total variance). The most precise reconstructions were obtained when using sub‐surface temperatures between 40 and 50 m water depth. The application of the calibration function to a Holocene sediment core at ~37°S–53°W revealed mean annual sub‐surface temperature reconstructions between 8°C and 11°C, confirming the northward displacement of the Brazil–Malvinas Confluence during the onset of the Holocene and suggesting a major influence of the Malvinas Current during the entire Holocene at the studied site.
description: Supplement to: García Chapori, Natalia Luz; Laprida, Cecilia (2021): Planktonic foraminifera assemblages from the Brazil–Malvinas Confluence: palaeoceanographic implications of sub-surface temperature reconstructions in the western South Atlantic. Lethaia
DOI: 10.1594/pangaea.848266
title: Nitrogen isotopic composition of diatoms of sediment core PS75/072-4
DOI: 10.1594/pangaea.928294
title: Glacier surface velocities per day of Gepatschferner and Taschachferner, 2020

description: Glacier surface velocities are measured on four neighbouring glaciers in the Ötztal Alps (Austria). Measurements of the annual horizontal flow velocity (Δs/a [m/a]) on Hintereisferner (HEF) were started in 1885 at stone lines (cross-profiles). Annual values for the stone lines are given as mean values from the stones at the cross-profiles. On Kesselwandferner, the annual horizontal (Δs/a [m/a]) and vertical velocities (Δv/a [m/a], positive upwards and negative downwards) are measured at ablation and accumulation stakes since 1965. On Taschachferner (TSF) and Gepatschferner (GPF), the records of annual and subseasonal horizontal flow velocities at ablation stakes were started in 2009.This data series is a continuation of: doi:10.1594/PANGAEA.896741
DOI: 10.1594/pangaea.928295
title: Glacier surface velocities per day of Gepatschferner and Taschachferner, 2018

description: Glacier surface velocities are measured on four neighbouring glaciers in the Ötztal Alps (Austria). Measurements of the annual horizontal flow velocity (Δs/a [m/a]) on Hintereisferner (HEF) were started in 1885 at stone lines (cross-profiles). Annual values for the stone lines are given as mean values from the stones at the cross-profiles. On Kesselwandferner, the annual horizontal (Δs/a [m/a]) and vertical velocities (Δv/a [m/a], positive upwards and negative downwards) are measured at ablation and accumulation stakes since 1965. On Taschachferner (TSF) and Gepatschferner (GPF), the records of annual and subseasonal horizontal flow velocities at ablation stakes were started in 2009.This data series is a continuation of: doi:10.1594/PANGAEA.896741
DOI: 10.1594/pangaea.958529
title: Apparent growth rates estimated in each incubation bottle of dilution experiments and photoacclimation correction index (Phi) assessed from changes in cell fluorescence measured by flow-cytometry during 24-h dilution experiments during during TAN1702

description: Here we present taxon-specific apparent growth rate data obtained from high-pressure liquid chromatography (HPLC) pigment and flow cytometry (FCM) analisis of initial (T0) and final (T24) samples in serial dilution grazing experiments conducted with surface mixed layer water from subantarctic waters across the Campbell Plateau region southeast of New Zealand.
DOI: 10.1594/pangaea.921389
title: Energy balance and soil moisture data of an agricultural test field in Faisalabad, Pakistan

description: In July 2018, a monitoring station was installed on a test field (31°26'21 .3 '' N, 73°04' 18 17.7 '' E) of the University of Agriculture Faisalabad (UAF) in Pakistan. The general purpose of this station is to create a database that helps to improve the estimation of water balance components. The station operated from 2018-07-03 to 2019-06-01 and is equipped with (i) one net radiometer (NR-Lite2, Kipp & Zonen), mounted at a height of 2.5 m a.g.l., (ii) one self-calibrating soil heat flux plate (HFP01SC, Hukseflux), installed in a depth of 8 cm b.g.l., and (iii) four soil moisture and temperature sensors (CS650, Campbell Scientific), installed in a depth of 10, 20, 40 and 80 cm b.g.l., respectively. The present dataset has a temporal resolution of 1 minute and comprises records of net radiation, soil heat flux, volumetric water content, electric conductivity, and temperature. Due to empty batteries or full memory storage the records show some gaps. The cumulative gap length is 51 days, and the number of full days with records is 281.
DOI: 10.1594/pangaea.943294
title: Stable carbon isotopic compositions of intact polar lipids (IPLs) and core lipids (CLs) from sediment cores GeoB15105-2 and GeoB15105-4
DOI: 10.1594/pangaea.967646
title: Depth, bottom temperature and bottom salinity measured during the RV Ivan Petrov expeditions from Franz Josef Land archipelago in Summer-Autumn 2020 and 2021

description: The dataset contains depth, bottom temperature and bottom salinity for each station obtained by CTD casts (RBR Concerto 3 in 2020, and CastAway CTD in 2021) during the RV Ivan Petrov expeditions from Franz Josef Land archipelago in Summer-Autumn 2020 and 2021.
DOI: 10.1594/pangaea.928293
title: Glacier surface velocities per day of Gepatschferner and Taschachferner, 2019

description: Glacier surface velocities are measured on four neighbouring glaciers in the Ötztal Alps (Austria). Measurements of the annual horizontal flow velocity (Δs/a [m/a]) on Hintereisferner (HEF) were started in 1885 at stone lines (cross-profiles). Annual values for the stone lines are given as mean values from the stones at the cross-profiles. On Kesselwandferner, the annual horizontal (Δs/a [m/a]) and vertical velocities (Δv/a [m/a], positive upwards and negative downwards) are measured at ablation and accumulation stakes since 1965. On Taschachferner (TSF) and Gepatschferner (GPF), the records of annual and subseasonal horizontal flow velocities at ablation stakes were started in 2009.This data series is a continuation of: doi:10.1594/PANGAEA.896741
DOI: 10.1594/pangaea.949153
title: Seawater carbonate chemistry and survival rate of F2 Dicentrarchus labrax after viral challenge

description: Background: Progressive CO2-induced ocean acidification (OA) impacts marine life in ways that are difficult to predict but are likely to become exacerbated over generations. Although marine fishes can balance acid–base homeostasis efficiently, indirect ionic regulation that alter neurosensory systems can result in behavioural abnormalities. In marine invertebrates, OA can also affect immune system function, but whether this is the case in marine fishes is not fully understood. Farmed fish are highly susceptible to disease outbreak, yet strategies for overcoming such threats in the wake of OA are wanting. Here, we exposed two generations of the European sea bass (Dicentrarchus labrax) to end-of-century predicted pH levels (IPCC RCP8.5), with parents (F1) being exposed for four years and their offspring (F2) for 18 months. Our design included a transcriptomic analysis of the olfactory rosette (collected from the F2) and a viral challenge (exposing F2 to betanodavirus) where we assessed survival rates.Results: We discovered transcriptomic trade-offs in both sensory and immune systems after long-term transgenerational exposure to OA. Specifically, RNA-Seq analysis of the olfactory rosette, the peripheral olfactory organ, from 18-months-old F2 revealed extensive regulation in genes involved in ion transport and neuronal signalling, including GABAergic signalling. We also detected OA-induced up-regulation of genes associated with odour transduction, synaptic plasticity, neuron excitability and wiring and down-regulation of genes involved in energy metabolism. Furthermore, OA-exposure induced up-regulation of genes involved in innate antiviral immunity (pathogen recognition receptors and interferon-stimulated genes) in combination with down-regulation of the protein biosynthetic machinery. Consistently, OA-exposed F2 challenged with betanodavirus, which causes damage to the nervous system of marine fish, had acquired improved resistance.Conclusion: F2 exposed to long-term transgenerational OA acclimation showed superior viral resistance, though as their metabolic and odour transduction programs were altered, odour-mediated behaviours might be consequently impacted. Although it is difficult to unveil how long-term OA impacts propagated between generations, our results reveal that, across generations, trade-offs in plastic responses is a core feature of the olfactory epithelium transcriptome in OA-exposed F2 offspring, and will have important consequences for how cultured and wild fish interacts with its environment.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2022-09-28.
DOI: 10.1594/pangaea.964529
title: Seawater carbonate chemistry and neuromolnecular responses in disrupted mutualistic cleaning interactions under future environmental conditions

description: We evaluated the neuromolecular mechanisms behind the behavioural disruption of cleaning interactions in response to future environments. We subjected cleaner wrasses and surgeonfish (Acanthurus leucosternon, serving as clients) to elevated temperature (warming, 32 °C), increased levels of CO2 (high CO2, 1000 ppm), and a combined condition of elevated CO2 and temperature (warming and high CO2, 32 °C, and 1000 ppm) for 28 days.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2024-01-02.
DOI: 10.1594/pangaea.815356
title: Tiepoints for ODP Site 108-658

description: XRF match: matching XRF-derived Ca counts from 658A/B to %CaCO3 from radiocarbon-dated 658C (deMenocal et al. 2000; Quaternary Science Reviews; 658C age model as in Adkins et al., 2006, Paleoceanography).d18O: matching benthic d18O from 658A/B (Sarnthein and Tiedemann 1990, Paleoceanography) to same data versus age as contained in the LR04 stack (Lisiecki and Raymo 2005).Zr/Al - HI match: matching Zr/Al from Site 658 to grainsize-based humidity index data from GeoB7920-2 (Tjallingii et al. 2008).
DOI: 10.1594/pangaea.902597
title: Micro-XRF scanning results of rhyolitic tephra layers from the Auckland Volcanic Field, Chromium X-ray tube

description: Itrax Micro-XRF scanning results recorded at the Australian Nuclear Science and Technology Organisation (ANSTO; Sydney, Australia) on Molybdenum and Chromium X-ray tubes. Various step sizes, exposure times and scanning positions. Tephra names following EMPA ID as stated in the related manuscript.
description: LP would like to thank AINSE Limited for providing financial assistance (Award - PGRA 12196) to enable work on the ANSTO Itrax core scanner.
description: Supplement to: Peti, Leonie; Gadd, Patricia S; Hopkins, Jenni L; Augustinus, Paul C (2019): Itrax μ-XRF core scanning for rapid tephrostratigraphic analysis: a case study from the Auckland Volcanic Field maar lakes. Journal of Quaternary Science
DOI: 10.1594/pangaea.902599
title: Micro-XRF scanning results of rhyolitic tephra layers from the Auckland Volcanic Field, Molybdenum X-ray tube

description: Itrax Micro-XRF scanning results recorded at the Australian Nuclear Science and Technology Organisation (ANSTO; Sydney, Australia) on Molybdenum and Chromium X-ray tubes. Various step sizes, exposure times and scanning positions. Tephra names following EMPA ID as stated in the related manuscript.
description: LP would like to thank AINSE Limited for providing financial assistance (Award - PGRA 12196) to enable work on the ANSTO Itrax core scanner.
description: Supplement to: Peti, Leonie; Gadd, Patricia S; Hopkins, Jenni L; Augustinus, Paul C (2019): Itrax μ-XRF core scanning for rapid tephrostratigraphic analysis: a case study from the Auckland Volcanic Field maar lakes. Journal of Quaternary Science
DOI: 10.1594/pangaea.967077
title: Biomass and functional traits of exotic and Cerrado native grass species: a biodiversity experiment in the Chapada dos Veadeiros National Park

description: In November 2019, a biodiversity experiment was established, sowing 302 plots with different species richness levels and dominance, utilizing eight native Cerrado grass species. Following two growth seasons, in October 2021, aboveground biomass of exotic grasses was harvested from 4 m² plots, while that of native species was collected from two 12.5 x 25 cm subplots within these larger plots. The biomass samples were then oven-dried at approximately 60°C to a constant weight and subsequently weighed. Soil types for each plot were determined by visual assessment, categorized as rocky or clayey based on the presence of laterites. In February 2022, five functional traits of the native species were measured: leaf mass per area (LMA), maximum vegetative height (H), root tissue density (RTD), specific root length (SRL), and total root length (TRL). These measurements were taken from six isolated individuals per species near the experiment. Leaf samples for LMA were hydrated for 24 hours, scanned for area estimation using ImageJ software, then dried and weighed. Maximum vegetative height was measured from five adult individuals in native areas. The root system was assessed by washing soil monoliths and analyzing root segments stained with methylene blue. Root length and volume were quantified using RhizoVision Explorer, and total root length was derived by multiplying specific root length by total root mass. Rao's quadratic entropy (FDQ) was calculated for each plot as an index of functional diversity, producing 31 distinct FDQ values representing various trait combinations.
DOI: 10.1594/pangaea.970131
title: Glacier surface velocities per day of Gepatschferner and Taschachferner, 2023

description: Glacier surface velocities are measured on four neighbouring glaciers in the Ötztal Alps (Austria). Measurements of the annual horizontal flow velocity (Δs/a [m/a]) on Hintereisferner (HEF) were started in 1885 at stone lines (cross-profiles). Annual values for the stone lines are given as mean values from the stones at the cross-profiles. On Kesselwandferner, the annual horizontal (Δs/a [m/a]) and vertical velocities (Δv/a [m/a], positive upwards and negative downwards) are measured at ablation and accumulation stakes since 1965. On Taschachferner (TSF) and Gepatschferner (GPF), the records of annual and subseasonal horizontal flow velocities at ablation stakes were started in 2009.This data series is a continuation of: doi:10.1594/PANGAEA.896741
DOI: 10.1594/pangaea.975874
title: Oceanographic data of Time Series Station Spiekeroog for 2022

description: The Time Series Station Spiekeroog (TSS) was setup in 2002, in the tidal inlet between the East Frisian Islands of Langeoog and Spiekeroog in the Southern German Bight, at position 53°45′01.0″ N, 007°40′16.3″ E. The aim was to ensure the continuous measurement of physical, biological, chemical and meteorological parameters, even under extreme weather conditions such as storms, ice, and storm surges. The TSS was financed as part of the Deutsche Forschungsgemeinschaft (DFG) research unit BioGeoChemistry of Tidal Flats and the Ministry for Science and Culture of the Land of Lower Saxony (MWK). Here, sea level, water temperature and conductivity were measured in the year 2022. All raw data were revised and corrected for steps as range, outliers and stationarity checks. Water temperature and conductivity were measured in five different depths (4 m, 5.5 m, 7.5 m, 9.5 m, 11.5 m below MSL). Due to marine biofouling at the sensors and accompanying drift of instruments, the measured water temperature and conductivity data were corrected via linear regression by using reference data. As the water column in this region is well mixed and the water depth of the measurements varies with the tide, data from all five depths were averaged and referenced to a water depth of 4 m. Absolute salinity was derived from conductivity, temperature and pressure data according to TEOS 10. Data were smoothed and a quality flag was assigned for water temperature and salinity. The quality flags refer to the standard for data quality control of SeaDataNet https://www.seadatanet.org/ (0 = raw data, 1 = good data, 2 = probably good data, 3 = questionable data).
DOI: 10.1594/pangaea.975875
title: Oceanographic data of Time Series Station Spiekeroog for 2023

description: The Time Series Station Spiekeroog (TSS) was setup in 2002, in the tidal inlet between the East Frisian Islands of Langeoog and Spiekeroog in the Southern German Bight, at position 53°45′01.0″ N, 007°40′16.3″ E. The aim was to ensure the continuous measurement of physical, biological, chemical and meteorological parameters, even under extreme weather conditions such as storms, ice, and storm surges. The TSS was financed as part of the Deutsche Forschungsgemeinschaft (DFG) research unit BioGeoChemistry of Tidal Flats and the Ministry for Science and Culture of the Land of Lower Saxony (MWK).Here, sea level, water temperature and conductivity were measured in the year 2023. All raw data were revised and corrected for steps as range, outliers and stationarity checks. Water temperature and conductivity were measured in five different depths (4 m, 5.5 m, 7.5 m, 9.5 m, 11.5 m below MSL). Due to marine biofouling at the sensors and accompanying drift of instruments, the measured water temperature and conductivity data were corrected via linear regression by using reference data. As the water column in this region is well mixed and the water depth of the measurements varies with the tide, data from all five depths were averaged and referenced to a water depth of 4 m. Absolute salinity was derived from conductivity, temperature and pressure data according to TEOS 10. Data were smoothed and a quality flag was assigned for water temperature and salinity. The quality flags refer to the standard for data quality control of SeaDataNet https://www.seadatanet.org/ (0 = raw data, 1 = good data, 2 = probably good data, 3 = questionable data). A detailed description of the Time Series Station Spiekeroog, its structure and instrumentation can be found in Zielinski et al. (2022) and in Reuter et al. (2009).