cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.935478
title: Dendrometer and meteorological data from the TreeNet network, year 2013

description: The timing of diel stem growth of mature forest trees is still largely unknown, as empirical data with high temporal resolution have not been available so far. Consequently, the effects of day-night conditions on tree growth remained uncertain. Here we present the first comprehensive field study of hourly-resolved radial stem growth of seven temperate tree species, based on 57 million underlying data points over a period of up to 8 years. We show that trees grow mainly at night, with a peak after midnight, when the vapour pressure deficit (VPD) is among the lowest. A high VPD strictly limits radial stem growth and allows little growth during daylight hours, except in the early morning. Surprisingly, trees also grow in moderately dry soil when the VPD is low. Species-specific differences in diel growth dynamics show that species able to grow earlier during the night are associated with the highest number of hours with growth per year and the largest annual growth increment. We conclude that species with the ability to overcome daily water deficits faster have greater growth potential. Furthermore, we conclude that growth is more sensitive than carbon uptake to dry air, as growth stops before stomata are known to close.
DOI: 10.1594/pangaea.935488
title: Dendrometer and meteorological data from the TreeNet network, year 2014

description: The timing of diel stem growth of mature forest trees is still largely unknown, as empirical data with high temporal resolution have not been available so far. Consequently, the effects of day-night conditions on tree growth remained uncertain. Here we present the first comprehensive field study of hourly-resolved radial stem growth of seven temperate tree species, based on 57 million underlying data points over a period of up to 8 years. We show that trees grow mainly at night, with a peak after midnight, when the vapour pressure deficit (VPD) is among the lowest. A high VPD strictly limits radial stem growth and allows little growth during daylight hours, except in the early morning. Surprisingly, trees also grow in moderately dry soil when the VPD is low. Species-specific differences in diel growth dynamics show that species able to grow earlier during the night are associated with the highest number of hours with growth per year and the largest annual growth increment. We conclude that species with the ability to overcome daily water deficits faster have greater growth potential. Furthermore, we conclude that growth is more sensitive than carbon uptake to dry air, as growth stops before stomata are known to close.
DOI: 10.1594/pangaea.935493
title: Dendrometer and meteorological data from the TreeNet network, year 2015

description: The timing of diel stem growth of mature forest trees is still largely unknown, as empirical data with high temporal resolution have not been available so far. Consequently, the effects of day-night conditions on tree growth remained uncertain. Here we present the first comprehensive field study of hourly-resolved radial stem growth of seven temperate tree species, based on 57 million underlying data points over a period of up to 8 years. We show that trees grow mainly at night, with a peak after midnight, when the vapour pressure deficit (VPD) is among the lowest. A high VPD strictly limits radial stem growth and allows little growth during daylight hours, except in the early morning. Surprisingly, trees also grow in moderately dry soil when the VPD is low. Species-specific differences in diel growth dynamics show that species able to grow earlier during the night are associated with the highest number of hours with growth per year and the largest annual growth increment. We conclude that species with the ability to overcome daily water deficits faster have greater growth potential. Furthermore, we conclude that growth is more sensitive than carbon uptake to dry air, as growth stops before stomata are known to close.
DOI: 10.1594/pangaea.935495
title: Dendrometer and meteorological data from the TreeNet network, year 2016

description: The timing of diel stem growth of mature forest trees is still largely unknown, as empirical data with high temporal resolution have not been available so far. Consequently, the effects of day-night conditions on tree growth remained uncertain. Here we present the first comprehensive field study of hourly-resolved radial stem growth of seven temperate tree species, based on 57 million underlying data points over a period of up to 8 years. We show that trees grow mainly at night, with a peak after midnight, when the vapour pressure deficit (VPD) is among the lowest. A high VPD strictly limits radial stem growth and allows little growth during daylight hours, except in the early morning. Surprisingly, trees also grow in moderately dry soil when the VPD is low. Species-specific differences in diel growth dynamics show that species able to grow earlier during the night are associated with the highest number of hours with growth per year and the largest annual growth increment. We conclude that species with the ability to overcome daily water deficits faster have greater growth potential. Furthermore, we conclude that growth is more sensitive than carbon uptake to dry air, as growth stops before stomata are known to close.
DOI: 10.1594/pangaea.935509
title: Dendrometer and meteorological data from the TreeNet network, year 2017

description: The timing of diel stem growth of mature forest trees is still largely unknown, as empirical data with high temporal resolution have not been available so far. Consequently, the effects of day-night conditions on tree growth remained uncertain. Here we present the first comprehensive field study of hourly-resolved radial stem growth of seven temperate tree species, based on 57 million underlying data points over a period of up to 8 years. We show that trees grow mainly at night, with a peak after midnight, when the vapour pressure deficit (VPD) is among the lowest. A high VPD strictly limits radial stem growth and allows little growth during daylight hours, except in the early morning. Surprisingly, trees also grow in moderately dry soil when the VPD is low. Species-specific differences in diel growth dynamics show that species able to grow earlier during the night are associated with the highest number of hours with growth per year and the largest annual growth increment. We conclude that species with the ability to overcome daily water deficits faster have greater growth potential. Furthermore, we conclude that growth is more sensitive than carbon uptake to dry air, as growth stops before stomata are known to close.
DOI: 10.1594/pangaea.911145
title: Response of the microbial food web to a multi-stressor (increase in organic matter, grazing pressure and decrease in pH) effect in incubation experiments in the Arctic: Microcosm
DOI: 10.25549/uschist-c104-279540
title: Student Union sculptures, USC, after 1927.

description: 16 photographs of terra cotta sculptures by Adolphe of Gladding-McBean on the exterior of the Student Union building, 3601 University Avenue, Los Angeles, California, USA, after 1927. Included are astronomy, entymology, singing (choir), fencing, fighting, geography, knights, drawing, monks, vaulting, dragon heads, monkeys, lucifer, bearded man's head, and a trojan head medallion.
DOI: 10.1594/pangaea.933153
title: Diatom species and geochemical element concentration on sediments from Barbacoas floodplain lake, Antioquia, Colombia
DOI: 10.1594/pangaea.935525
title: Dendrometer and meteorological data from the TreeNet network, year 2018

description: The timing of diel stem growth of mature forest trees is still largely unknown, as empirical data with high temporal resolution have not been available so far. Consequently, the effects of day-night conditions on tree growth remained uncertain. Here we present the first comprehensive field study of hourly-resolved radial stem growth of seven temperate tree species, based on 57 million underlying data points over a period of up to 8 years. We show that trees grow mainly at night, with a peak after midnight, when the vapour pressure deficit (VPD) is among the lowest. A high VPD strictly limits radial stem growth and allows little growth during daylight hours, except in the early morning. Surprisingly, trees also grow in moderately dry soil when the VPD is low. Species-specific differences in diel growth dynamics show that species able to grow earlier during the night are associated with the highest number of hours with growth per year and the largest annual growth increment. We conclude that species with the ability to overcome daily water deficits faster have greater growth potential. Furthermore, we conclude that growth is more sensitive than carbon uptake to dry air, as growth stops before stomata are known to close.
DOI: 10.1594/pangaea.943021
title: Profiles of N, Fe, and S compounds - concentration and isotopes in the water column of Lake La Cruz, Spain
DOI: 10.1594/pangaea.922591
title: Air temperature measurements in the southern part of Brooks Gorge Research Watershed in 2016
DOI: 10.1594/pangaea.935401
title: Dendrometer and meteorological data from the TreeNet network, year 2008

description: The timing of diel stem growth of mature forest trees is still largely unknown, as empirical data with high temporal resolution have not been available so far. Consequently, the effects of day-night conditions on tree growth remained uncertain. Here we present the first comprehensive field study of hourly-resolved radial stem growth of seven temperate tree species, based on 57 million underlying data points over a period of up to 8 years. We show that trees grow mainly at night, with a peak after midnight, when the vapour pressure deficit (VPD) is among the lowest. A high VPD strictly limits radial stem growth and allows little growth during daylight hours, except in the early morning. Surprisingly, trees also grow in moderately dry soil when the VPD is low. Species-specific differences in diel growth dynamics show that species able to grow earlier during the night are associated with the highest number of hours with growth per year and the largest annual growth increment. We conclude that species with the ability to overcome daily water deficits faster have greater growth potential. Furthermore, we conclude that growth is more sensitive than carbon uptake to dry air, as growth stops before stomata are known to close.
DOI: 10.25549/uschist-c104-279548
title: Student Union sculptures, USC, after 1927.

description: 16 photographs of terra cotta sculptures by Adolphe of Gladding-McBean on the exterior of the Student Union building, 3601 University Avenue, Los Angeles, California, USA, after 1927. Included are astronomy, entymology, singing (choir), fencing, fighting, geography, knights, drawing, monks, vaulting, dragon heads, monkeys, lucifer, bearded man's head, and a trojan head medallion.
DOI: 10.1594/pangaea.922594
title: Water content measurements used for calibration of HOBO sensors in Brooks Gorge Research Watershed
DOI: 10.1594/pangaea.922680
title: Streamflow measurements at Brooks Gorge Research Watershed in 2016
DOI: 10.1594/pangaea.922683
title: Air temperature and pressure measurements at the streamflow site, Brooks Gorge Research Watershed in 2016
DOI: 10.1594/pangaea.949793
title: Hendy test of stable oxygen and carbon isotope ratios of speleothems WA-21-6-A and WB-21-5-A

description: The dataset includes Hendy test of speleothem carbon isotopes and oxygen isotopes, used to reconstruct climate in southeastern Alaska during the past ~3,500 years. Speleothem WB-21-5-A was collected in Wishbone Cave (55.774 N, -133.191 E; 420 m.a.s.l.) and speleothem WA-21-6-A was collected in Walkabout Cave (55.776° N, 133.195° W; 350 m.a.s.l.) on May 21, 2022 and June 21, 2022, respectfully. The data collection was completed between September 2021-March 2022. Stable isotopes were measured on a ThermoFisher Delta V isotope ratio mass spectrometer.
DOI: 10.1594/pangaea.956026
title: Net flux O2 DIC CaCO3 flux measurements from summer and winter experiments
DOI: 10.1594/pangaea.956046
title: Light dark and daily O2 DIC CaCO3 flux data - for in vitro and in situ summer and winter experiments
DOI: 10.1594/pangaea.902545
title: Glacial Succession tackled from Space: A valuable tool for analysing glacial chronologies?

description: Monitoring of plant succession in glacier forelands so far has been restricted to field sampling. In this study, in situ vegetation sampling along a chronosequence between Little Ice Age (LIA) maximum extent and the recent glacier terminus at Jamtalferner/Silvretta (ferner is a Tyrolian toponym for glacier) is compared to time series of the Normalized Difference Vegetation Index (NDVI) calculated from 13 Landsat scenes (1985-2016). The glacier terminus positions at 16 dates between the LIA maximum and 2015 were analysed from historical maps, orthophotos and LiDAR images and used for site age determination. We sampled plots of different time since deglaciation, from very recent to approx. 150 years: after 100 years, roughly 80% of the ground is covered by plants and ground cover did not increase essentially thereafter. Species number increases from 10-20 species on young sites to 40-50 species after 100 years. The NDVI increases for all plots between 1985 and 2016, from a mean of 0.11 for 1985-1991 to 0.2 in 2009 and 0.27 in 2016. For the plots deglaciated between 1 and about 150 years, the NDVI increases with the time of exposure. As the increase in ground cover is clearly reproduced by the NDVI (R² ground cover/NDVI 0.84) - even for sparsely vegetated areas -, we see a high potential of satellite-borne NDVI to perform regional characterizations of glacier forelands for hydrological, ecological and hazard management related applications. This data collection comprises the galcier outlines, NDVIs and chronosequencing locations with diversity and ground cover data.
DOI: 10.1594/pangaea.973832
title: Seepage measurement on Pines from 2010 to 2021 at Britz Station, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.956029
title: Net inorganic and organic carbon production from summer and winter experiments
DOI: 10.1594/pangaea.973822
title: Simulation experiment of evapotranspiration on Pines from 2012 to 2021
DOI: 10.1594/pangaea.933463
title: Modeled monthly surface water concentrations of fecal coliform bacteria, biochemical oxygen demand, and total dissolved solids in Asia, Africa, and Latin America in the period 1990-2010

description: These datasets contain modeled monthly mean loadings and concentrations of faecal coliform bacteria (FC), biochemical oxygen demand (BOD), and total dissolved solids (TDS) in river networks of Asia, Africa, and Latin America for the periods 1990-1992 and 2008-2010. These loadings and concentrations were estimated with WorldQual (part of the WaterGAP3 modeling framework) on a 5 arc-min resolution grid. These datasets were elaborated as part of the project “The world's water quality: A pre-study for a worldwide assessment” for which funding was provided by the United Nations Environmental Programme (UNEP) and UN-Water. The datasets are supplementary for the manuscript mentioned in the reference.
DOI: 10.1594/pangaea.973833
title: Climate series measured on Britz Station from 2010 to 2021, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.973823
title: Simulation experiment of interception on Pines from 2012 to 2021
DOI: 10.1594/pangaea.973835
title: Simulation experiment of transpiration on Beeches from 2012 to 2021
DOI: 10.1594/pangaea.900102
title: The BernClim plant phenological data set from the Canton of Bern (Switzerland) 1970-2018
DOI: 10.1594/pangaea.973816
title: Simulation experiment of soil evaporation on Beeches from 2012 to 2021
DOI: 10.1594/pangaea.973847
title: Mean daily soil moisture content in layer 1 measured below Beeches at Britz Station, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.973852
title: Mean daily soil moisture content in layer 3 measured below mixed forest at Britz Station, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.973817
title: Simulation experiment of evapotranspiration on mixed forest from 2012 to 2021
DOI: 10.1594/pangaea.973818
title: Simulation experiment of interception on mixed forest from 2012 to 2021
DOI: 10.1594/pangaea.973824
title: Simulation experiment of soil evaporation on Pines from 2012 to 2021
DOI: 10.1594/pangaea.973853
title: Mean daily soil moisture content in layer 1 measured below Pines at Britz Station, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.973825
title: Simulation experiment of transpiration on Pines from 2012 to 2021
DOI: 10.1594/pangaea.973830
title: Interception measurement on mixed forest from 2010 to 2021 at Britz Station, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.973819
title: Simulation experiment of soil evaporation on mixed forest from 2012 to 2021
DOI: 10.1594/pangaea.973821
title: Simulation experiment of transpiration on mixed forest from 2012 to 2021
DOI: 10.1594/pangaea.973849
title: Mean daily soil moisture content in layer 3 measured below Beeches at Britz Station, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.973854
title: Mean daily soil moisture content in layer 2 measured below Pines at Britz Station, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.973855
title: Mean daily soil moisture content in layer 3 measured below Pines at Britz Station, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.973831
title: Interception measurement on Pines from 2010 to 2021 at Britz Station, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.973850
title: Mean daily soil moisture content in layer 1 measured below mixed forest at Britz Station, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.973851
title: Mean daily soil moisture content in layer 2 measured below mixed forest at Britz Station, North-east of Berlin, Central Europe
DOI: 10.1594/pangaea.945308
title: KOSMOS Bergen 2015 mesocosm study: C. harengus biomass

description: To evaluate the influence of ocean acidification on predatory plankton, e.g. Hydrozoa and fish larvae as well as their interaction in complex natural communities, we deployed eight pelagic mesocosms for 53 days (Mai to July) in Raunefjord, Norway, and enclosed 60 m³ of local seawater containing a natural plankton community under post-bloom conditions. Four mesocosms were manipulated to simulate extreme pCO2 levels of 2069 µatm while the other four served as untreated controls. To investigate the interaction between Hydrozoa and fish larvae influenced by OA ee studied OA-induced changes at the top of the food web by following ≈2000 larvae of Atlantic herring (Clupea harengus) hatched inside each mesocosm during the first week of the experiment, and a Hydrozoa population that had already established inside the mesocosms. Organisms of both taxa inside and outside the mesocosms were measured over the course of the experiment in regular intervals. The data stems from 55µm and 500µm Apstein net hauls, subsequent microscopic analyses as well as carbon to nitrogen measurements. Under OA, we detected 20% higher abundance of hydromedusae staged jellyfish, but 25% lower biomass. At the same time, survival rates of Atlantic herring larvae were higher under OA (control pCO2: 0.1%, high pCO2: 1.7%) in the final phase of the study.
DOI: 10.1594/pangaea.949777
title: Stable oxygen and carbon isotope ratios of speleothem WB-21-5-A

description: The dataset includes speleothem carbon isotopes and oxygen isotopes used to reconstruct climate in southeastern Alaska during the past ~3,500 years. Speleothem WB-21-5-A was collected in Wishbone Cave (55.774 N, -133.191 E; 420 m.a.s.l.) on May 21, 2022. The data collection was completed between September 2021-March 2022. Stable isotopes were measured on a ThermoFisher Delta V isotope ratio mass spectrometer.
DOI: 10.1594/pangaea.907884
title: Microbial cell numbers measured during POLARSTERN cruise PS94 (TransArcII) to the Barents Sea and central Arctic

description: For the determination of prokaryotic cell numbers, 1 cm³ sediment was fixed with sterile filtered formalin/seawater at a final concentration of 2% and stored at 4°C until further analyses in the home laboratory. Samples were filtered on 0.2 µm polycarbonate filters, stained with acridine orange (Meyer-Reil, 1983, doi:10.1007/bf00395813), and counted using an epifluorescence microscope (Axiophot II Imaging, Zeiss, Jena, Germany). For each sample, 30 random grids from two replicate filters were counted and averaged.
DOI: 10.1594/pangaea.930921
title: TemBi 2014 mesocosm study: Summer storm impact on size-fractionated bacterial protein production and abundance of heterotrophic prokaryotes and picocyanobacteria

description: We simulated an experimental summer storm in large-volume (~1200 m³, ~16m depth) enclosures in Lake Stechlin (https://www.lake-lab.de) by mixing deeper water masses from the meta- and hypolimnion into the mixed layer (epilimnion). The mixing included the disturbance of a deep chlorophyll maximum (DCM) which was present at the same time of the experiment in Lake Stechlin and situated in the metalimnion of each enclosure during filling. Size-fractionated Bacterial Protein Production (BPP) of particle associated (PA, &gt;3.0 µm) and free-living bacteria (FL, 0.2-3.0 µm) (14C-Leu incorporation) as well as abundances of PA (microscopy of DAPI stained cells on 3.0 µm polycarbonate filters) and FL heterotrophic prokaryotes and picocyanobacteria (flow cytometry of SYBR green I stained cells) were monitored for 42 days after the experimental disturbance event. Mixing increased bacterial abundance and production about 3 weeks after mixing, which was associated to a mixing-induced stimulation of phytoplankton growth in the mixed enclosures compared to the controls. Simultaneously, decreased abundances of picocyanobacteria could be observed in mixed enclosures.
description: Empty cells = NA
DOI: 10.1594/pangaea.905507
title: Holocene sea-surface reconstructions in the Canadian Arctic, cor 2005-804-004
DOI: 10.1594/pangaea.905510
title: Holocene sea-surface reconstructions in the Canadian Arctic, core 2004-804-009
DOI: 10.1594/pangaea.930907
title: TemBi 2014 mesocosm study: Summer storm effect on chlorophyll a development in Lake Stechlin

description: We simulated an experimental summer storm in large-volume (~1200 m³, ~16m depth) enclosures in Lake Stechlin (https://www.lake-lab.de) by mixing deeper water masses from the meta- and hypolimnion into the mixed layer (epilimnion). The mixing included the disturbance of a deep chlorophyll maximum (DCM) which was present at the same time of the experiment in Lake Stechlin and situated in the metalimnion of each enclosure during filling. Size-fractionated (0.2-3 µm and &gt;3.0 µm) chlorophyll a (Chla) development was monitored for 42 days after the experimental disturbance event. Mixing disrupted the thermal stratification, increased concentrations of dissolved nutrients and CO2 and changed light conditions in the epilimnion. Thereby, mixing increased the concentration of Chla of the small size fraction 0.2-3.0 within one week after mixing. After 2-3 weeks, mixing resulted in increased concentrations of Chla also in the large size fraction, which was associated to a bloom of Dolichospermums sp.