cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.925190
title: Respiration rates of permeabilized heart fibres and biometrical data of European seabass Dicentrarchus labrax
DOI: 10.1594/pangaea.611009
title: Planktological-chemical observation in the water column at station M1_CTD161, Indian Ocean
DOI: 10.1594/pangaea.76049
title: Plankton biomass of mocness net M44/4_D-MOC281
DOI: 10.1594/pangaea.610959
title: Planktological-chemical observation in the water column at station M1_CTD103, Indian Ocean
DOI: 10.1594/pangaea.729411
title: (Table T94) Chemical composition of basalts from Hole 525A, Leg 74 (Walvis Ridge, Atlantic Ocean)
DOI: 10.1594/pangaea.610931
title: Planktological-chemical observation in the water column at station M1_CTD198, Indian Ocean

description: Sunrise: 06:24, sunset: 18:05. 14C-ampoule: batch no. D2, radio activity 10 µC
DOI: 10.1594/pangaea.610983
title: Planktological-chemical observation in the water column at station M1_CTD133, Indian Ocean
DOI: 10.1594/pangaea.877648
title: Vegetation and soil surface cover in the Jena-Ecotron experiment

description: This dataset contains vegetation and soil surface cover in the Jena-Ecotron Experiment in 2012. This experiment was conducted in the Montpellier European Ecotron (CNRS, France), an advanced controlled environment facility for ecosystem research, and aimed at understanding the impact of plant species richness (4 vs. 16 species) for ecosystem carbon and water fluxes.The soil monoliths used in this experiment contained plant communities originating from the long- term Jena Experiment (50°57.1' N, 11°37.5' E, 130 m above sea level; mean annual temperature 9.3°C, mean annual precipitation 587 mm) established in May 2002. Twelve plots were selected for the Jena-Ecotron study according to the following criteria: (1) the four functional groups grasses, legumes, small and tall herbs were present, (2) realized species numbers were close to sown species richness, and (3) plots were equally distributed across the experimental field site to account for different soil textures. Large monoliths (2 m² surface area, diameter of 1.6 m, 2 m depth with a weight of 7 to 8 tons) including intact soil and vegetation were excavated in December 2011 and placed in lysimeters. In March 2012, before the start of the vegetation growth, the lysimeters were transported and installed in the Macrocosms platform of the Montpellier European Ecotron.Cover abundance per sown species and total cover of sown species, weeds, bare ground, mosses, litter were estimated on the whole Ecotron-plot area shortly before the destructive harvest of the experimental units on 15 July 2017. Species-level data were estimated using decimal scale (Londo 1976): 1: &lt;= 1%, 2: &lt;= 5%, 10: 6-15%, 20: 16-25%, 30: 26-35%, 40: 36-45%, 50: 46-55%, 60: 56-65%, 70: 66-75%, 80: 76-85%, 90: 86-100%). Community cover data were directly estimated as percentage (cover &lt;1% is coded as 0.5).
description: There are two types of missing values contained in datasets from the Jena Experiment. Empty cells represent missing values that result from the design of the experiment. Empty cells result when the respective value does not occur in the design and could thus not be measured. For example, in the case of species-specific biomass cells are left blank, when the species was not sown in the respective plot. Missing values that resulted from methodological problems, sampling errors, or lost samples/data are marked with "-9999".This dataset is part of a collection of measurements of the Jena-Ecotron Experiment, which was part of the Jena Experiment.
DOI: 10.1594/pangaea.396030
title: Zooplankton biomass at Seine Seamount of MOCNESS net tow station POS309_19

description: Samples L3, L6, L7, R3, R4 and R9 were taken 10 m above ground (L3, L7 and R4: 10m - 100 m, R9: 10 m - 150 m). Depth, water was calculated between event depth (elevation) and depth above ground.
DOI: 10.1594/pangaea.727050
title: Occupancy rates of Atrina vexillum at Island Bone Batang, Spermonde Archipelago, Indonesia

description: Samples taken at a mean depth of 0.4 m below spring low water
DOI: 10.1594/pangaea.848925
title: Dissolved organic carbon in soil solution of the Jena Experiment (Main Experiment, year 2005)

description: This data set contains measurements of dissolved organic carbon in samples of soil water collected from the main experiment plots of a large grassland biodiversity experiment (the Jena Experiment; see further details below). In the main experiment, 82 grassland plots of 20 x 20 m were established from a pool of 60 species belonging to four functional groups (grasses, legumes, tall and small herbs). In May 2002, varying numbers of plant species from this species pool were sown into the plots to create a gradient of plant species richness (1, 2, 4, 8, 16 and 60 species) and functional richness (1, 2, 3, 4 functional groups). Plots were maintained by bi-annual weeding and mowing. In April 2002 glass suction plates with a diameter of 12 cm, 1 cm thickness and a pore size of 1–1.6 mm (UMS GmbH, Munich, Germany) were installed in depths of 10, 20, 30 and 60 cm to collect soil solution. The sampling bottles were continuously evacuated to a negative pressure between 50 and 350 mbar, such that the suction pressure was about 50 mbar above the actual soil water tension. Thus, only the soil leachate was collected. Cumulative soil solution was sampled biweekly and analyzed for dissolved organic carbon concentration by a high TOC elemental analyzer (Elementar Analysensysteme GmbH, Hanau, Germany). Samples were analyzed as soon as possible and stored at 4°C if necessary. Often in summer, no free soil solution was available for collection, especially in the upper soil layers. Annual mean values of measured biweekly concentrations of dissolved organic carbon are provided.
description: During summer month soil frequently dries out so that no soil pore water can be collected. Consequently, in these periods no DOC concentrations can be determined and these periods do not contribute to the reported annual means of DOC concentrations. Only in block 2 suction plates were installed in all four depth layers. Suction plates in 30 centimeter depth were installed in block 1, 2, and 3 in 2002. In 2005, additional suctions plates were installed in 20 centimeter depth in block 1, 2, and 3. In block 4, no samples are available because no plates were installed.There are two types of missing values contained in the dataset. Empty cells represent missing values that result from the design of the experiment when the respective value does not occur and thus cannot be measured. Missing values that resulted from methodological problems, sampling errors, or lost samples/data are marked with "-9999".In addition to measurement of dissolved organic carbon in soil solution, measurements of soil carbon (organic, inorganic, and total) determined from dried soil samples are available.This datasets is part of a time series of soil carbon measurements in the Main Experiment since 2002 (doi:10.1594/PANGAEA.848946).
DOI: 10.1594/pangaea.954938
title: Standard length, dry weight and swim bladder percentage gas of Cyclothone species from the IDEADOS and BATHYPELAGIC cruises in Northeast Atlantic Ocean and Mediterranean Sea

description: This dataset contains the values of standard length, dry weight and percentage of gas in Cyclothone spp. swim bladder collected during the Bathypelagic cruise (from 24th May to 23rd June 2018) and IDEADOS cruise (from 12th to 29th July 2010). Samples were obtained with MOCNESS-1 m² (with a 0.2 mm mesh size) zooplankton net during day and night hauls carried out from the surface to 700-800 m during IDEADOS cruise, and to 1800 m in the Bathypelagic cruise. Fish for size frequency distribution were preserved in 5% buffered formalin, and those for weight measurements were frozen at 20°C, and then dry weight (DW, ±0.01 g) and standard length (SL, ±0.01 mm) were measured at the land-based laboratory. The percentage of area with fat tissue (%FT) in Cyclothone spp. swim bladders was linearly regressed against standard length (mm). The maximum percentage area with gas (%GAS) was then estimated as 100-%FT.
DOI: 10.1594/pangaea.941863
title: Biological information on samples of Maurolicus muelleri and other species collected during the B3-2010 cruise and during the experimental fishery 2009-2011

description: These data contain biological information (length, weight, age) on samples of Maurolicus muelleri and other species (bycatch) collected respectively during R/V Bjarni Sæmundsson cruise B3-2010 southwest of Iceland (period 2010-01-26/2010-02-04) and from catches in experimental and commercial pearlside fishery in 2009-2011. Fishery vessels IDs are randomized except for Bjarni Sæmundsson (vessel_id 1131). The randomized IDs are the same as in the associated files (Maurolicus_muelleri NASC value survey B3-2010 and Experimental fisheries catches) distributed along with this data set. Trawl specification (mostly modified capelin trawls) such as horizontal and vertical openings, tow depth, tow length, sweep length and mesh size were recorded. Standard weather conditions are also mentioned (wind speed and direction, cloud cover and sea state).
DOI: 10.1594/pangaea.610961
title: Planktological-chemical observation in the water column at station M1_CTD105, Indian Ocean
DOI: 10.1594/pangaea.954923
title: Body mass-density of Cyclothone species from the SUMMER cruise in Northeast Atlantic Ocean and Mediterranean Sea

description: This dataset contains the values of standard length, wet weight, and body mass-density of Cyclothone spp. measured during the SUMMER cruise (from 30th September to 18th October 2020). Samples were obtained with the "Mesopelagos" midwater trawl during day and night hauls carried out from the surface to 700-800 m depth. The Mesopelagos net consists of graded-mesh netting starting with 30 mm and ending with 4 mm. The specimens collected were immediately identified and measured (standard length, SL). Body-mass densities (ρ) of Cyclothone braueri, C. pseudopallida, C. pygmaea and C. pallida were determined on board via a density-bottle method (Greenlaw, 1977; Mikami et al., 2000).
DOI: 10.1594/pangaea.610962
title: Planktological-chemical observation in the water column at station M1_CTD106, Indian Ocean
DOI: 10.1594/pangaea.854371
title: Mineral nitrogen from KCl extractions of soil from the Jena Experiment (Main Experiment up to 15cm depth, year 2008)

description: As an estimate of plant‐available N, this data set contains measurements of inorganic nitrogen (NO3‐N and NH4‐N, the sum of which is termed mineral N or Nmin) determined by extraction with 1 M KCl solution of soil samples from the main experiment plots of a large grassland biodiversity experiment (the Jena Experiment; see further details below). In the main experiment, 82 grassland plots of 20 x 20 m were established from a pool of 60 species belonging to four functional groups (grasses, legumes, tall and small herbs). In May 2002, varying numbers of plant species from this species pool were sown into the plots to create a gradient of plant species richness (1, 2, 4, 8, 16 and 60 species) and functional richness (1, 2, 3, 4 functional groups). Plots were maintained by bi-annual weeding and mowing. Soil sampling and analysis: Five soil cores (diameter 0.01 m) were taken at a depth of 0 to 0.15 m of the mineral soil from each of the experimental plots in March and October 2008. In October 2008, also the plots of the management experiment, that altered mowing frequency and fertilized subplots (see further details below) were sampled. Samples of the soil cores per plot (subplots in case of the management experiment) were pooled during each sampling campaign. NO3‐N and NH4‐N concentrations were determined by extraction of soil samples with 1 M KCl solution and were measured in the soil extract with a Continuous Flow Analyzer (CFA, AutoAnalyzer, Seal, Burgess Hill, United Kingdom).
description: In addition to measurements of mineral nitrogen from KCl-extractions of soil samples, measurements of total nitrogen determined from dried soil samples and measurements of dissolved nitrogen in soil solution are available.This datasets is part of a time series of soil nitrogen measurements in the Main Experiment since 2002 (doi:10.1594/PANGAEA.854372).
DOI: 10.1594/pangaea.711738
title: Otolith microstructure analysis on Sprattus sprattus trawled during R/V Baltica cruise Baltica02/10

description: All increments counted, none excluded, the sum of all increments gives the age after "first increment formation", NOT specifically hatch date! Note, too, that the last increment was always deleted because presumably its formation couldn't be completed on the day of catch.
DOI: 10.1594/pangaea.728903
title: (Table T11) Chemical composition of basalts from ODP Hole 504B, Leg 148 (Costa Rica Rift, Pacific Ocean)
DOI: 10.1594/pangaea.729481
title: (Table T117) Chemical composition of igneous rocks from ODP Hole 794C, Leg 127 (Japan Sea)
DOI: 10.1594/pangaea.728919
title: (Table T24) Chemical composition of basalts from Hole 477, Leg 64 (Guaymas Basin, Gulf of California, Pacific Ocean)

description: Rare earth element data from Saunders et al. (1982), doi:10.2973/dsdp.proc.64.112.1982
DOI: 10.1594/pangaea.968479
title: Mesopelagic fishes of the Benguela upwelling system, cruise RV Meteor 153, 2019, and cruise RV Sonne 285, 2021

description: The Benguela upwelling system is one of the most productive marine ecosystems in the world; however, little is known about the community structure of mesopelagic fishes in its northern (nBUS) and southern (sBUS) subsystems. We analyzed around 1900 specimens from 13 stations in 2019, austral summer, in the nBUS and 11 stations in the sBUS during the austral summer and found 88 species and 24 families of mesopelagic fishes. Seven distinct assemblages characterized by water mass, oxygen concentration in the surface layer, and chlorophyll concentrations between 50 and 100 m were identified. In 2021 in austral winter, 15 stations were analyzed, of which 7 belonged to sBUS and 8 to nBUS.
DOI: 10.1594/pangaea.703251
title: (Appendix 1) Sedimentology and documentation of planktonic foraminiferal preservation in DSDP Hole 74-527
DOI: 10.1594/pangaea.726965
title: Biomass of Atrina vexillum at Island Bone Batang, Spermonde Archipelago, Indonesia

description: Samples taken at a mean depth of 0.4 m below spring low water
DOI: 10.1594/pangaea.928820
title: Red Crab artisanal fishing Callinectes bocourti (A. Milne Edwards, 1879), (Crustacea Decapoda, Portunidae) in an amazonic estuary: fishermen's profile and species morphometry

description: For the study, 65 specimens of male crabs were captured in an estuary on the northern coast of Brazil. The study area is located in the coastal area of the municipality of São Caetano de Odivelas, on the banks of the Mojuim River, belonging to the northeast mesoregion and the salty microregion, between the coordinates (00°44'14''S, 48°01'77''W). In the region, semi-day tides predominate with amplitudes between 2 to 4 m. In the laboratory, samples of specimens collected from artisanal fisheries in 2014 were stored in freezers and plastic bags. They were weighted with the aid of a precision digital scale (0.1 g). Using a digital calliper (precision 0.01 mm), the following structures were measured: carapace width (distance between the bases of the lateral spines), carapace length (difference between the epistomial spine and the posterior margin of the carapace), width and total length of the right pincer.
DOI: 10.1594/pangaea.965834
title: Raw grain sizes of sediments from the reef island Langkai, Spermonde Archipelago, Indonesia

description: The data set includes grain size distribution of sediments from the reef island Langkai, SW Sulawesi, Indonesia. The data was collected in order to reconstruct the Holocene and modern (sediment) dynamics over the past ca 6,000 years. Sediment samples were obtained from sediment cores taken by percussion drilling and hand-held (Auger) coring in May 2016 and July 2021. Laboratory analysis of the sediments and shoreline analysis were carried out between 2021 and 2023. The grain size distribution was determined by dry-sieving of the bulk sample into fractions following Wentworth (1922).
DOI: 10.1594/pangaea.947306
title: Biomass parameters and elemental composition of the non-indigenous hydromedusa Craspedacusta sowerbii in Canada and the USA

description: The freshwater hydrozoan Craspedacusta sowerbii has invaded exotic habitats around the world. This data set contains information on the water and organic content, as well as elemental composition (carbon, nitrogen, phosphorus) of jellyfish sampled in Canada and the USA in August and September 2021. Specimens (N = 1385) were collected from eight lakes in British Columbia and one lake in Virginia using dip net, cast net, and jars from near the surface (top 1 m). Jellyfish were sexed based on light microscopic observation of their gametes. Specimens collected from British Columbia were exclusively male, whereas specimens from Virginia were identified as females.
DOI: 10.1594/pangaea.329720
title: Plankton biomass of mocness net M51/2_D-MOC528-7 (DFG project: WE 695/23-1)
DOI: 10.1594/pangaea.611015
title: Planktological-chemical observation in the water column at station M1_CTD171, Indian Ocean
DOI: 10.1594/pangaea.711737
title: Otolith microstructure analysis on Sprattus sprattus trawled during R/V Argos cruise Argos02/10

description: All increments counted, none excluded, the sum of all increments gives the age after "first increment formation", NOT specifically hatch date! Note, too, that the last increment was always deleted because presumably its formation couldn't be completed on the day of catch.
DOI: 10.1594/pangaea.728898
title: (Table T5) Chemical composition of basalts from Hole 504B, Leg 69 (Costa Rica Rift, Pacific Ocean)
DOI: 10.1594/pangaea.877649
title: Community leaf area index (LAI) estimated in the Jena-Ecotron experiment

description: This dataset contains community leaf area index (LAI) in the Jena-Ecotron Experiment in 2012. This experiment was conducted in the Montpellier European Ecotron (CNRS, France), an advanced controlled environment facility for ecosystem research, and aimed at understanding the impact of plant species richness (4 vs. 16 species) for ecosystem carbon and water fluxes.The soil monoliths used in this experiment contained plant communities originating from the long- term Jena Experiment (50°57.1' N, 11°37.5' E, 130 m above sea level; mean annual temperature 9.3°C, mean annual precipitation 587 mm) established in May 2002. Twelve plots were selected for the Jena-Ecotron study according to the following criteria: (1) the four functional groups grasses, legumes, small and tall herbs were present, (2) realized species numbers were close to sown species richness, and (3) plots were equally distributed across the experimental field site to account for different soil textures. Large monoliths (2 m² surface area, diameter of 1.6 m, 2 m depth with a weight of 7 to 8 tons) including intact soil and vegetation were excavated in December 2011 and placed in lysimeters. In March 2012, before the start of the vegetation growth, the lysimeters were transported and installed in the Macrocosms platform of the Montpellier European Ecotron.Community leaf area index (LAI) was measured with a portable LAI-2000 plant canopy analyzer (LI-COR, Lincoln, USA) on 15th July 2012. LAI was measured under diffuse light (evening) by taking one reference measurement above the canopy and five measurements near ground level within the center of each lysimeter. The zenith angle was restricted to 0-43° in order to minimize the edge effect (Hyer & Goetz, 2004) inherent to a canopy with a surface of 2m². In lysimeters with a high proportion of one rosulate species (Plantago media) with leaves laying very close to the ground, the values measured with the LAI-2000 were replaced with the average value of two leaf area measurements using a LI-3100 leaf area meter (LI-COR, Lincoln, USA) from two rectangles of 0.2 × 0.5 m per plot.
description: There are two types of missing values contained in datasets from the Jena Experiment. Empty cells represent missing values that result from the design of the experiment. Empty cells result when the respective value does not occur in the design and could thus not be measured. For example, in the case of species-specific biomass cells are left blank, when the species was not sown in the respective plot. Missing values that resulted from methodological problems, sampling errors, or lost samples/data are marked with "-9999".This dataset is part of a collection of measurements of the Jena-Ecotron Experiment, which was part of the Jena Experiment.
DOI: 10.1594/pangaea.967132
title: Diversity and abundance of deep-pelagic fish on the Bay of Biscay slope (North-East Atlantic) from 56 trawl hauls between 2002 and 2019

description: The dataset represents the number, the total and the standardized biomass (catch per unit effort) of 94 deep-pelagic fish species collected by pelagic trawling in submarine canyons of the Bay of Biscay slope during the EVHOE scientific cruises on R/V Thalassa in autumn between 2002 and 2019 (https://doi.org/10.18142/8). Fifty-six trawls were conducted at night between 20 m and 2000 m depth. The trawl net was 192 m long with a headline of 76 m and a foot rope of 70 m. The average vertical mean mouth opening was about 24 m and the horizontal opening of about 58 m. The mesh size gradually decreases from very large 8 m meshes at the mouth to 20 mm meshes in the codend. To allow the capture of very small specimens, the trawl is also equipped with a 7.5 m long sock with a 12 mm mesh. The trawl had an average vertical mouth opening of 24 m and a horizontal opening of 58 m. The duration of the haul was 1 hour at 4 kn. The trawl did not have an opening-closing mechanism. Therefore, some individuals might have been caught during the descent and ascent of the gear, however a higher trawl speed on deployment and a low speed on retrieval were implemented to reduce bycatch at shallower depths than the target depth. The biomass per unit effort is standardized by the volume hauled and was calculated by multiplying the vertical and horizontal trawl opening and the distance trawled. Individuals were identified by expert ichthyologists to the species level whenever possible, otherwise they were identified to the genus or family level, especially when individuals were too small or damaged. Species or taxa were counted and most often weighed. When weighing was not possible, an estimate of the average weight of individuals over the whole time series was calculated and the total weight per species was estimated.