cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.877643
title: Root traits (biomass, length, root length density, diameter, surface area, volume, tips, forks and crossings) in the Jena-Ecotron experiment

description: This dataset contains root traits (biomass, length, diameter, surface area, tips, forks and crossings) 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.Three soil cores (diameter 3.5 cm) were sampled to 60 cm depth in each plot. Each core was divided into six layers (0-5, 5-10, 10-20, 20-30, 30-40 and 40-60 cm). The respective layers were pooled per plot, and washed with tap water over a sieve (mesh size 200 µm) to separate roots from soil. Cleaned roots were weighed and a subsample of the fresh roots (approx. 2 g) was stored in 70 % ethanol before it was dyed (with neutral red solution) and scanned (Scanner Optical STD4800 Regent Instruments Inc. with top light unit and an image resolution of 600 dpi). Root length density and root surface area were estimated with WinRhizo (Reg 2009c, Regents Instruments Inc.). The smooth off area of WinRhizo was set to 0.0001 and the length-width ratio to 3.0. Belowground biomass was estimated as described above but the samples were then dried at 65°C for three days.
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.757574
title: (Appendix C) Neogene IRD and total IRD concentrations of ODP Hole 120-751A
DOI: 10.1594/pangaea.329724
title: Plankton biomass of mocness net M51/2_D-MOC541-1 (DFG project: WE 695/23-1)
DOI: 10.1594/pangaea.962801
title: Accumulation rates of benthic foraminifera from ODP Site 175-1085

description: BFAR and CFAR were calculated by using the equation proposed by Herguera and Berger (1991, doi:10.1130/0091-7613(1991)019&lt;1173:PFBFAG&gt;2.3.CO;2):* BFAR = (nr/g &gt; 63 μm *%wt&gt;63/100)*LSR*DBD * CFAR=%wt&gt;63 μm*LSR*DBD
DOI: 10.1594/pangaea.762752
title: Biometric measurements of fish in the Eastfrisian Wadden Sea during SENCKENBERG cruise SE0293

description: Depth, water was calculated as mean from bathymetric depths at start/end of trawl. Standard length of Brachyra = width of carapax of Brachyra; Standard length of Natantia = length of rostrum to telsons of Natantia.
DOI: 10.1594/pangaea.964527
title: Macroplankton and micronekton trawl data from the Norwegian Sea 2019-2020

description: We provide here a curated set of data containing standardized catch biomasses and abundances of key macroplankton and mesopelagic fish taxonomically identified to species or genera or the nearest possible taxonomic group collected by a Macroplankton trawl (~6 m x 6 m mouth opening, non-graded mesh with 3 mm light-opening) from cruises in the Norwegian Sea during the International Ecosystem Survey in the Nordic Seas (IESNS) in May to June 2019 and 2020. The collected material is obtained from standardized V-shaped hauls down to a maximum depth of about 1000 m, although some shallower V-hauls are included either to look at the vertically migrating mesopelagic organisms that enter the epipelagic domain during nighttime hours, or because of depth restrictions due to shallow bottom topography. This dataset holds the biomass and abundance data of species or taxonomically identified categories. Filtered water volume (m³) was determined by calculating the towed horizontal distance (m) from when the trawl was deployed until maximum depth (m) and similarly when retrieved. Then, knowing the maximum depth of the trawl, by trigonometric calculations the trawl path (hypothenuse) during downcast and upcast were derived. The filtered volume was calculated by multiplying the summed towpath distance (m) by the nominal trawl opening of 36 m².
DOI: 10.1594/pangaea.729067
title: (Table T67) Chemical composition of basalts from Hole 418A, Legs 52 and 53 (Bermuda Rise, Atlantic Ocean)
DOI: 10.1594/pangaea.955697
title: Prey items of Centrolophus niger collected south of Iceland in July 2017 and July 2021

description: This data set has biological measurements and stomach content analysis for fourteen specimens of Centrolophus niger which were frozen whole at sea during the Icelandic part of the International Ecosystem Summer Survey in Nordic Seas (IESSNS) in July 2017 and July 2021. In 2017, three specimens were collected to confirm species identification by a specialist at home institute. In 2021, all caught specimens were collected for detailed biological study. The C. niger were by-catch in a scientific pelagic ecosystem survey which includes trawling, cod-end mesh size 50 mm, in the surface layer, trawl headline visible in surface and foot rope at approximately 35 m depth. Four images are provided for each specimen, proximal and distal side of both left and right otolith. For detailed information about the surveys see the cruise reports attached to the campaigns. The data is provided by the Marine and Freshwater Research Institute (MFRI) in Iceland.
DOI: 10.1594/pangaea.762715
title: Biometric measurements of fish in the Eastfrisian Wadden Sea during POLARIS cruise PO0200

description: Depth, water was calculated as mean from bathymetric depths at start/end of trawl. Standard length of Brachyra = width of carapax of Brachyra; Standard length of Natantia = length of rostrum to telsons of Natantia.
DOI: 10.1594/pangaea.745295
title: Seston properties for multinet station L2-23

description: Data acquired during the ORCAS project (Ocean Reef Coupling in the Andaman Sea) in cooperation with the Phuket Marine Biological Center, Thailand, funded by NRCT-DFG
DOI: 10.1594/pangaea.955695
title: Characteristics of Centrolophus niger collected south of Iceland in July 2017 and July 2021

description: This data set has biological measurements and stomach content analysis for fourteen specimens of Centrolophus niger which were frozen whole at sea during the Icelandic part of the International Ecosystem Summer Survey in Nordic Seas (IESSNS) in July 2017 and July 2021. In 2017, three specimens were collected to confirm species identification by a specialist at home institute. In 2021, all caught specimens were collected for detailed biological study. The C. niger were by-catch in a scientific pelagic ecosystem survey which includes trawling, cod-end mesh size 50 mm, in the surface layer, trawl headline visible in surface and foot rope at approximately 35 m depth. On December 1st, 2021, total weight of specimens was measured frozen and again thawed, thawed 16 hours at 0 °C. Length was measured to the nearest mm, weight to nearest 0.01 g, sex labelled as unidentified when macroscopic examination of gonads was inconclusive, maturity scale was mature, immature, or unidentified when macroscopic examination was inconclusive. Stomach, cut at oesophagus and pyloric caecae, was weighted with prey content intact and after prey was squished out of stomach. Otoliths were collected from each specimen. For detailed information about the surveys see the cruise reports attached to the campaigns. The data is provided by the Marine and Freshwater Research Institute (MFRI) in Iceland.
DOI: 10.1594/pangaea.762749
title: Biometric measurements of fish in the Eastfrisian Wadden Sea during POLARIS cruise PO0894

description: Depth, water was calculated as mean from bathymetric depths at start/end of trawl. Standard length of Brachyra = width of carapax of Brachyra; Standard length of Natantia = length of rostrum to telsons of Natantia.
DOI: 10.1594/pangaea.930325
title: Diet composition of Atlantic bluefin tuna in the Iceland Sea and surrounding area: A focus on mesopelagic organisms

description: We present data of Atlantic bluefin tuna (Thunnus thynnus) diet published in Ólafsdóttir et al (2016). Each line corresponds to the observation of one prey individual in a single tuna stomach and contains data on the predator (tuna ID number in database, length, weight and sex) and on the prey (Micromesistius poutassou, Gonatus fabricii, Todarodes sagittatus, Scopelogadus beanii, Notoscopelus kroeyeri, Maurolicus muelleri and Paralepidae), together with cruise information (latitude, longitude and date of collection). Therefore, several lines can contain data of a single tuna stomach which can be identified by the “Specimen ID (predator, MFRI database)” column. The size, weight and length of each prey was recalculated based on regression between beak/otolith size and total length of the prey estimated from survey samples collected in Icelandic waters. These regressions are available under "Further details".
DOI: 10.1594/pangaea.396020
title: Zooplankton biomass at Seine Seamount of MOCNESS net tow station POS295/8_A
DOI: 10.1594/pangaea.329715
title: Plankton biomass of mocness net M51/2_D-MOC528-2 (DFG project: WE 695/23-1)
DOI: 10.1594/pangaea.729068
title: (Table T68) Chemical composition of basalts from Hole 317A, Leg 33 (Manihiki Plateau, Pacific Ocean)
DOI: 10.1594/pangaea.729001
title: (Table T45) Chemical composition of alkaline series from Hole 432A, Leg 55 (Nintoku seamount, Emperor Seamount chain)
DOI: 10.1594/pangaea.729064
title: (Table T64) Chemical composition of trachy-andesites from Hole 465A, Leg 62 (Southern Hess Rise, Pacific Ocean)
DOI: 10.1594/pangaea.728926
title: (Table T29) Chemical composition of basalts from Hole 469, Leg 63 (Baja California, Pacific Ocean)

description: Major element data from Grechin et al. (1981), doi:10.2973/dsdp.proc.63.127.1981
DOI: 10.1594/pangaea.915969
title: Fish and invertebrate trawl sampling south and west of Iceland in July 2018

description: This data set has trawl catch weight and biological measurements from the 2nd leg of the Icelandic part of the International Ecosystem Summer Survey in Nordic Seas (IESSNS). The survey area was from the coast, over the shelf edge and into the deep-water basins south and west of Iceland, defined as IESSNS strata 5, 6, and 12, and stratum boundaries (black solid line) are displayed on attached map "IESSNS 2018.png". The survey period is July 19th to August 1st, 2018, and samples were collected at 34 trawl stations (blue symbol on attached map "IESSNS 2018.png"). A specifically designed scientific trawl, called Multpelt832 (ICES 2013a-b, Valdemarsen et al. 2014) with cod-end mesh size of 50 mm, was used at all 34 stations. Trawl depth ranged from surface (trawl headline in surface) to 400 m depth. All trawl catch is identified to lowest possible taxonomic level, total weight of each species recorded and length of 20-50 specimen per species measured. For blue whiting (Micromesistius poutassou), herring (Clupea harengus), and mackerel (Scomber scombrus) more biological measurements are provided such as weight, sex, maturity, age, liver weight and stomach weight. Each specimen is one row in the data set file. Natantia and Scyphozoa specimen could not be identified to species, hence no individual length measurements are provided but total weight of catch per taxon is provided. For detailed information about the survey see the survey report (Ólafsdóttir and Jónsson 2019). Various information is provided about the trawling operation, weather, position, date and time.
DOI: 10.1594/pangaea.969114
title: Fish and invertebrate trawl sampling south and west of Iceland in July 2022

description: This data set has trawl catch weight and biological measurements from the latter half of the Icelandic part of the International Ecosystem Summer Survey in Nordic Seas (IESSNS) conducted in July 2022. The survey area was from the coast and over the shelf edge south and west of Iceland, defined as IESSNS strata 5 and 6, see embedded map. The survey period was July 13 – 21, 2022, and samples were collected at 34 trawl stations. A specifically designed scientific trawl, called Multpelt832 (ICES, 2013a-b, Valdemarsen et al., 2014) with cod-end mesh size of 50+ mm, was used at all 34 stations. Trawl depth ranged from surface (trawl headline in surface) at 32 stations and 2 stations was trawling deeper in the water column targeting specific acoustic backscatter with trawl depth of 270 – 350 m. All trawl catch was identified to lowest possible taxonomic level, total weight of each species recorded, and length and weight of 50 specimen per species measured, or all if less was caught. For blue whiting (Micromesistius poutassou), herring (Clupea harengus), and mackerel (Scomber scombrus) more biological measurements are provided such as sex, maturity, age, and stomach weight. For age determination, the otolith or scale was extracted whole from specimen at sea and read whole under a dissecting microscope on land by an experienced age reader part of the ICES framework. Gonad maturity stage was visually estimated at sea during sampling by an experienced technician. For taxa Scyphozoa and Natantia decapods only total catch weight per station is recorded. For detailed information about the survey see the survey report (Ólafsdóttir and Kennedy, 2022), in Icelandic and abstract, figure and table headings also provided in English. Various information about the trawling operation and weather is included in the file. The data is provided by the Marine and Freshwater Research Institute in Iceland.
DOI: 10.1594/pangaea.729747
title: (Table AT37) Abundance of major and trace elements in basalts from ODP Hole 757C, Leg 121 (Ninetyeast Ridge, Indian Ocean)
DOI: 10.1594/pangaea.918336
title: Fish and invertebrate trawl sampling south and west of Iceland in July 2019

description: This data set has trawl catch weight and biological measurements from the 2nd leg of the Icelandic part of the International Ecosystem Summer Survey in Nordic Seas (IESSNS) conducted in July 2019. The survey area was from the coast, over the shelf edge and into the deep-water basins south and west of Iceland, defined as IESSNS strata 5, 6, and 12, and stratum boundaries (black solid line) are displayed on attached map "IESSNS 2019.png". The survey period is July 16 - 28 2019, and samples were collected at 34 trawl stations (blue symbol on attached map). A specifically designed scientific trawl, called Multpelt832 (ICES 2013a-b, Valdemarsen et al. 2014) with cod-end mesh size of 50 mm, was used at all 34 stations. Trawl depth ranged from surface (trawl headline in surface) to 370 m depth. All trawl catch was identified to lowest possible taxonomic level, total weight of each species recorded and length of 20-50 specimen per species measured. For blue whiting (Micromesistius poutassou), herring (Clupea harengus), and mackerel (Scomber scombrus) more biological measurements are provided such as weight, sex, maturity, age, and stomach weight. Each specimen is one row in the dataset file. Ten specimen, at eight stations (352, 354, 361, 366, 375, 383, 388, 391) were not length measured but are included and total weight of catch per taxon or species per station is provided. For detailed information about the survey see the survey report (Ólafsdóttir 2019). Various information is provided about the trawling operation, weather, position, date and time. The data is provided by the Marine and Freshwater Research Institute (MFRI) in Reykjavik, Iceland.
DOI: 10.1594/pangaea.971538
title: Accumulation rates of benthic foraminifera from IODP Site 363-U1488
DOI: 10.1594/pangaea.729477
title: (Table T112) Chemical composition of igneous rocks from Hole 454A, Leg 60 (West Side of the Mariana Trough, Philippine Sea)
DOI: 10.1594/pangaea.82507
title: Makrozooplankton at ALOHA Station during cruise HOT-81

description: Nets are towed obliquely at approx. 1 knot, from the surface to approx. 175 m. Towing time is approx. 20 minutes. Zooplankton (weak swimmers &gt;200µm) are collected using oblique tows of a 1 m**2 net (3m length) with 202µm mesh Nitex netting.
DOI: 10.1594/pangaea.729748
title: (Table AT38) Abundance of major and trace elements in basalts from ODP Hole 758A, Leg 121 (Ninetyeast Ridge, Indian Ocean)
DOI: 10.1594/pangaea.729061
title: (Table T61) Chemical composition of alkaline basalts and hawaiites from ODP Hole 872B, Leg 144 (Lo-En Guyot, West Pacific Guyots)
DOI: 10.1594/pangaea.729069
title: (Table T70) Chemical composition of basalts from Hole 254, Leg 26 (Ninetyeast Ridge, Indian Ocean)
DOI: 10.1594/pangaea.729425
title: (Table T109) Chemical composition of igneous rocks from Hole 449, Leg 59 (Parece Vela Basin)
DOI: 10.1594/pangaea.729488
title: (Table T123) Chemical composition of basalts from ODP Hole 834B, Leg 135 (Lau Basin)
DOI: 10.1594/pangaea.729871
title: (Table AT63) Abundance of major and trace elements in igneous rocks from Hole 453, Leg 60 (West Side of the Mariana Trough)
DOI: 10.1594/pangaea.82498
title: Makrozooplankton at ALOHA Station during cruise HOT-72

description: Nets are towed obliquely at approx. 1 knot, from the surface to approx. 175 m. Towing time is approx. 20 minutes. Zooplankton (weak swimmers &gt;200µm) are collected using oblique tows of a 1 m**2 net (3m length) with 202µm mesh Nitex netting.
DOI: 10.1594/pangaea.396025
title: Zooplankton biomass at Seine Seamount of MOCNESS net tow station POS295/27_H
DOI: 10.1594/pangaea.729225
title: (Table T86) Chemical composition of basalts from ODP Hole 747C, Leg 120 (Kerguelen Plateau, Indian Ocean)
DOI: 10.1594/pangaea.729418
title: (Table T102) Chemical composition of igneous rocks from ODP Hole 780C, Leg 125 (Conical Seamount, summit; Mariana Trench Region)
DOI: 10.1594/pangaea.329723
title: Plankton biomass of mocness net M51/2_D-MOC535-1 (DFG project: WE 695/23-1)
DOI: 10.1594/pangaea.711745
title: Otolith microstructure analysis on Sprattus sprattus trawled during R/V Dana cruise Dana04/8

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.729475
title: (Table T110) Chemical composition of gabbros from Hole 453, Leg 60 (West Side of the Mariana Trough, Philippine Sea)
DOI: 10.1594/pangaea.887365
title: Carbon and nitrogen concentrations in plants (Main Experiment, year 2008)

description: This data set contains measurements of carbon and nitrogen concentrations in aboveground plant biomass. Data presented here is 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 in general by bi-annual weeding and mowing. Since 2010, plot size was reduced to 5 x 6 m and plots were weeded three times per year.Aboveground plant biomass was harvested twice in May and August at estimated peak standing biomass before mowing. Plants were clipped at 3 cm above ground level in three rectangles of 20 x 50 cm size per plot. All material was sorted to species, weeds and rest (dead). Samples were dried at 70 °C for at least 48 h and weeds and rest were thrown away. All other material from one plot was combined to one sample and cut up with an analysis mill (Kinematica, Littau, Schweiz). A small subsample of this material was milled to fine powder in a ball-mill (Retsch 2000 M). From the milled material appr. 10 mg were weighed in for CN analysis. Carbon and nitrogen concentrations of this subsample were then determined with an elemental analyzer (VarioEL CHNS).
description: The main experiment on the field site of the Jena Experiment comprises a split-plot design in which additional treatments (e.g. no weeding allowing for invasion of other species, or application of fertilizer) have been applied to subplots along the outer margin of the plots (see Treatment description in the section "further details"). While in this dataset only data from the core area (mown and weeding of all none-sown species twice a year, no additional treatments) is reported, all potential treatments are listed as the first parameters in the data file to guarantee compatibility with other datasets that include different treatments. 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 could thus not be measured. For example, in the columns of species-specific biomass cells are left blank, when the species was not sown into 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 element concentrations in plants in the Jena Experiment. Similar data from other experiments (e.g. Main Experiment, Dominance Experiment; see details above), other years, or other methods quantifying related data might be available (https://doi.pangaea.de/10.1594/PANGAEA.887388).
DOI: 10.1594/pangaea.729478
title: (Table T113) Chemical composition of igneous rocks from Hole 458, Leg 60 (Mariana Forearc Region)
DOI: 10.1594/pangaea.610977
title: Planktological-chemical observation in the water column at station M1_CTD127, Indian Ocean
DOI: 10.1594/pangaea.762707
title: Biometric measurements of fish in the Eastfrisian Wadden Sea during POLARIS cruise PO0107

description: Depth, water was calculated as mean from bathymetric depths at start/end of trawl. Standard length of Brachyra = width of carapax of Brachyra; Standard length of Natantia = length of rostrum to telsons of Natantia.
DOI: 10.1594/pangaea.871350
title: Sample masses and lithic fraction of IODP Site 306-U1313

description: New version, upload 2017-01-27: the mcd were given incorrectly in the old version for some of the U1313D-2H samples.
DOI: 10.1594/pangaea.729881
title: (Table AT73) Abundance of major and trace elements in serpentinized harzburgites from ODP Hole 637A, Leg 103 (Galicia Margin, eastern Atlantic Ocean)
DOI: 10.1594/pangaea.729876
title: (Table AT68) Abundance of major and trace elements in igneous rocks from ODP Hole 797C, Legs 127 (Yamato Basin, Japan Sea)
DOI: 10.1594/pangaea.610979
title: Planktological-chemical observation in the water column at station M1_CTD129, Indian Ocean
DOI: 10.1594/pangaea.610980
title: Planktological-chemical observation in the water column at station M1_CTD130, Indian Ocean