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  • 2010-2014  (3,084,903)
  • 1980-1984  (1,016,015)
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  • 1
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    Short- versus long-term responses to changing CO2 in a coastal dinoflagellate bloom (2013)
    PANGAEA
    In:  Supplement to: Tatters, Avery O; Schnetzer, Astrid; Fu, Feixue; Lie, Alle Y A; Caron, David A; Hutchins, David A (2013): Short- versus long-term responses to changing CO2 in a coastal dinoflagellate bloom: implications for interspecific competitive interactions and community structure. Evolution, 67(7), 1879-1891, https://doi.org/10.1111/evo.12029
    Details
    Publication Date: 2024-06-18
    Description: Increasing pCO2 (partial pressure of CO2 ) in an "acidified" ocean will affect phytoplankton community structure, but manipulation experiments with assemblages briefly acclimated to simulated future conditions may not accurately predict the long-term evolutionary shifts that could affect inter-specific competitive success. We assessed community structure changes in a natural mixed dinoflagellate bloom incubated at three pCO2 levels (230, 433, and 765 ppm) in a short-term experiment (2 weeks). The four dominant species were then isolated from each treatment into clonal cultures, and maintained at all three pCO2 levels for approximately 1 year. Periodically (4, 8, and 12 months), these pCO2 -conditioned clones were recombined into artificial communities, and allowed to compete at their conditioning pCO2 level or at higher and lower levels. The dominant species in these artificial communities of CO2 -conditioned clones differed from those in the original short-term experiment, but individual species relative abundance trends across pCO2 treatments were often similar. Specific growth rates showed no strong evidence for fitness increases attributable to conditioning pCO2 level. Although pCO2 significantly structured our experimental communities, conditioning time and biotic interactions like mixotrophy also had major roles in determining competitive outcomes. New methods of carrying out extended mixed species experiments are needed to accurately predict future long-term phytoplankton community responses to changing pCO2 .
    Keywords: Alexandrium sp.; Alkalinity, total; Aragonite saturation state; Bicarbonate ion; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cell density; Chromista; Coast and continental shelf; Coulometric titration; Coulometry; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gonyaulax sp.; Growth/Morphology; Growth rate; Identification; Incubation duration; Laboratory experiment; Lingulodinium polyedra; Myzozoa; North Pacific; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; pH meter; Phytoplankton; Potentiometric; Prorocentrum micans; Replicate; Salinity; Species; Species interaction; Temperate; Temperature, water; Treatment; Tropical
    Type: Dataset
    Format: text/tab-separated-values, 5616 data points
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    DATA PANGAEA
  • 2
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    Massenbewegungen im Rotliegenden der Nordpfalz, dargestellt am Beispiel des Meßtischblattes Lauterecken (1984)
    Details
    Publication Date: 2024-06-18
    Description: Der Bereich des Meßtischblattes 6311 Lauterecken im Saar-Nahe-Gebiet (SW-Deutschland) wurde anhand einer geologischen, ingenieurgeologischen, hydrogeologischen und morphologischen Untersuchung einer Stabilitätsanalyse der Hänge und Böschungen unterzogen, die durch die Verwertung klimatologischer Daten vervollständigt wurde. Das Ergebnis liegt in einer Stabilitätskarte sowie in einer Analyse der gesammelten Daten vor. Soweit die Untersuchung des Modellgebietes von ca. 130 km21 Größe (etwa 5% der Fläche des Saar-Nahe-Gebietes) eine Antwort zuläßt, sind Hänge und Böschungen im sedimentären Rotliegenden des Saar-Nahe-Gebietes bereits ab 7° Hangneigung potentiell rutschgefährdet. Das rutschgefährdete Areal umfaßt etwa 10% der untersuchten Fläche. Ca. 2,6% wurden von Massenbewegungen betroffen. Kriechen und Gleiten sind die häufigsten Arten der Massenbewegungen. Die beteiligten stratigraphischen Einheiten sind neben den Deckschichten die Quirnbacher, Jeckenbacher und Lautereckener Schichten des Unteren Rotliegenden. Künstliche Böschungs-, An- und Einschnitte in den für das Unterrotliegende charakteristischen Wechsellagerungen von Ton-, Schluff- und Sandsteinen, stellen ein permanentes Stabilitätsproblem dar.
    Description: Abstract: This report deals with the analysis of stability of slopes which occur on the map of Lauterecken, Saar-Nahe-area, SW-Germany. A geological, engineering geological, hydrogeological and morphological study was made, additionally, climatological data were taken into account; the results of it are analyzed and plotted in a stability map. Conclusions: Taking the regarded territory of approximately 130 km2 (about 5% of the area of the Saar-Nahe-area), it can be stated that slopes in the Saar-Nahe-area are potential landslide areas, if the inclination of the slopes is 7° or more. Within an area of 10% landslides are probable to take place. Within 2,6% mass movements happened or are going on. Creep and sliding are the most abundant forms of mass movements. Slope instability occours preferentially in weathered rocks, Quirnbach beds, Jeckenbach beds and Lauterecken beds of the Lower Permian. Steep roadcuts occurring in alternating sandstone and siltstone beds are very likely to cause stability problems.
    Description: research
    Keywords: ddc:550 ; Rutschungen ; Saar-Nahe-Becken ; TK 6311 ; Rotliegend
    Language: German
    Type: doc-type:article , publishedVersion
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    CITATION GEO-LEO
  • 3
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    Organic carbon and total nitrogen stocks in soils of the Lena River Delta (2013)
    PANGAEA
    In:  Supplement to: Zubrzycki, Sebastian; Kutzbach, Lars; Grosse, Guido; Desyatkin, Alexey; Pfeiffer, Eva-Maria (2013): Organic carbon and total nitrogen stocks in soils of the Lena River Delta. Biogeosciences, 10(6), 3507-3524, https://doi.org/10.5194/bg-10-3507-2013
    Details
    Publication Date: 2024-06-17
    Description: The Lena River Delta, which is the largest delta in the Arctic, extends over an area of 32 000 km**2 and likely holds more than half of the entire soil organic carbon (SOC) mass stored in the seven major deltas in the northern permafrost regions. The geomorphic units of the Lena River Delta which were formed by true deltaic sedimentation processes are a Holocene river terrace and the active floodplains. Their mean SOC stocks for the upper 1 m of soils were estimated at 29 kg/m**2 ± 10 kg/m**2 and at 14 kg/m**2 ± 7 kg/m**2, respectively. For the depth of 1 m, the total SOC pool of the Holocene river terrace was estimated at 121 Tg ± 43 Tg, and the SOC pool of the active floodplains was estimated at 120 Tg ± 66 Tg. The mass of SOC stored within the observed seasonally thawed active layer was estimated at about 127 Tg assuming an average maximum active layer depth of 50 cm. The SOC mass which is stored in the perennially frozen ground at the increment 50-100 cm soil depth, which is currently excluded from intense biogeochemical exchange with the atmosphere, was estimated at 113 Tg. The mean nitrogen (N) stocks for the upper 1 m of soils were estimated at 1.2 kg/m**2 ± 0.4 kg/m**2 for the Holocene river terrace and at 0.9 kg/m**2 ± 0.4 kg/m**2 for the active floodplain levels, respectively. For the depth of 1 m, the total N pool of the river terrace was estimated at 4.8 Tg ± 1.5 Tg, and the total N pool of the floodplains was estimated at 7.7 Tg ± 3.6 Tg. Considering the projections for deepening of the seasonally thawed active layer up to 120 cm in the Lena River Delta region within the 21st century, these large carbon and nitrogen stocks could become increasingly available for decomposition and mineralization processes.
    Type: Dataset
    Format: application/zip, 29 datasets
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  • 4
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    Geochemistry of sediment core AL374_507-2 (2012)
    PANGAEA
    Details
    Publication Date: 2024-06-17
    Keywords: AL374; AL374_507-2; Alkalinity, total; Alkor (1990); Ammonium; Carbon, inorganic, dissolved; CO2BaseSleipner; DEPTH, sediment/rock; ECO2; Flow injection analysis (Hall and Aller 1992); MIC; MiniCorer; Nitrate and Nitrite; Nitrite; Phosphate; Photometer, methylene blue (Cline 1969); Seawater analysis after Grasshoff et al., 1983 (Verlag Chemie GmbH Weinheim); Silicate; Sleipner; Sub-seabed CO2 Storage: Impact on Marine Ecosystems; Sulfide; Two-point titration (Edmond 1970)
    Type: Dataset
    Format: text/tab-separated-values, 64 data points
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    DATA PANGAEA
  • 5
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    Geochemistry of sediment core AL374_515-1 (2012)
    PANGAEA
    Details
    Publication Date: 2024-06-17
    Keywords: AL374; AL374_515-1; Alkalinity, total; Alkor (1990); Ammonium; Calculated from mass/volume; Carbon, inorganic, dissolved; CO2BaseSleipner; Density, dry bulk; Density, wet bulk; DEPTH, sediment/rock; ECO2; Flow injection analysis (Hall and Aller 1992); Gas chromatography; Methane; Nitrate and Nitrite; Nitrite; Phosphate; Photometer, methylene blue (Cline 1969); Porosity; Seawater analysis after Grasshoff et al., 1983 (Verlag Chemie GmbH Weinheim); Silicate; Sleipner; Sub-seabed CO2 Storage: Impact on Marine Ecosystems; Sulfide; Two-point titration (Edmond 1970); van Veen Grab; VGRAB
    Type: Dataset
    Format: text/tab-separated-values, 12 data points
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    DATA PANGAEA
  • 6
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    Geochemistry of sediment core AL374_518-1 (2012)
    PANGAEA
    Details
    Publication Date: 2024-06-17
    Keywords: AL374; AL374_518-1; Alkalinity, total; Alkor (1990); Ammonium; Calculated from mass/volume; Carbon, inorganic, dissolved; CO2BaseSleipner; Density, dry bulk; Density, wet bulk; DEPTH, sediment/rock; ECO2; Flow injection analysis (Hall and Aller 1992); Gas chromatography; Methane; Nitrate and Nitrite; Nitrite; Phosphate; Photometer, methylene blue (Cline 1969); Porosity; Seawater analysis after Grasshoff et al., 1983 (Verlag Chemie GmbH Weinheim); Silicate; Sleipner; Sub-seabed CO2 Storage: Impact on Marine Ecosystems; Sulfide; Two-point titration (Edmond 1970); van Veen Grab; VGRAB
    Type: Dataset
    Format: text/tab-separated-values, 12 data points
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    DATA PANGAEA
  • 7
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    Geochemistry of sediment core AL374_517-1 (2012)
    PANGAEA
    Details
    Publication Date: 2024-06-17
    Keywords: AL374; AL374_517-1; Alkalinity, total; Alkor (1990); Ammonium; Calculated from mass/volume; Carbon, inorganic, dissolved; CO2BaseSleipner; Density, dry bulk; Density, wet bulk; DEPTH, sediment/rock; ECO2; Flow injection analysis (Hall and Aller 1992); Gas chromatography; Methane; Nitrate and Nitrite; Nitrite; Phosphate; Photometer, methylene blue (Cline 1969); Porosity; Seawater analysis after Grasshoff et al., 1983 (Verlag Chemie GmbH Weinheim); Silicate; Sleipner; Sub-seabed CO2 Storage: Impact on Marine Ecosystems; Sulfide; Two-point titration (Edmond 1970); van Veen Grab; VGRAB
    Type: Dataset
    Format: text/tab-separated-values, 12 data points
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    DATA PANGAEA
  • 8
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    Basic measurements of radiation at station Lindenberg (2002-04) (2010)
    PANGAEA
    In:  Meteorologisches Observatorium Potsdam
    Details
    Publication Date: 2024-06-17
    Keywords: Air temperature at 2 m height; BARO; Barometer; Baseline Surface Radiation Network; BSRN; DATE/TIME; Diffuse radiation; Diffuse radiation, maximum; Diffuse radiation, minimum; Diffuse radiation, standard deviation; Direct radiation; Direct radiation, maximum; Direct radiation, minimum; Direct radiation, standard deviation; Germany; HEIGHT above ground; Humidity, relative; HYGRO; Hygrometer; LIN; Lindenberg; Long-wave downward radiation; Long-wave downward radiation, maximum; Long-wave downward radiation, minimum; Long-wave downward radiation, standard deviation; Monitoring station; MONS; Pyranometer, Kipp & Zonen, CM21, SN 010824, WRMC No. 12009; Pyranometer, Kipp & Zonen, CM21, SN 010826, WRMC No. 12010; Pyrgeometer, Eppley, PIR, SN 32802F3, WRMC No. 12011; Pyrheliometer, Kipp & Zonen, CH1, SN 990220, WRMC No. 12012; Short-wave downward (GLOBAL) radiation; Short-wave downward (GLOBAL) radiation, maximum; Short-wave downward (GLOBAL) radiation, minimum; Short-wave downward (GLOBAL) radiation, standard deviation; Station pressure; Thermometer
    Type: Dataset
    Format: text/tab-separated-values, 820358 data points
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  • 9
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    Basic measurements of radiation at station Lindenberg (2004-01) (2011)
    PANGAEA
    In:  Meteorologisches Observatorium Potsdam
    Details
    Publication Date: 2024-06-17
    Keywords: Air temperature at 2 m height; BARO; Barometer; Baseline Surface Radiation Network; BSRN; DATE/TIME; Diffuse radiation; Diffuse radiation, maximum; Diffuse radiation, minimum; Diffuse radiation, standard deviation; Direct radiation; Direct radiation, maximum; Direct radiation, minimum; Direct radiation, standard deviation; Germany; HEIGHT above ground; Humidity, relative; HYGRO; Hygrometer; LIN; Lindenberg; Long-wave downward radiation; Long-wave downward radiation, maximum; Long-wave downward radiation, minimum; Long-wave downward radiation, standard deviation; Monitoring station; MONS; Pyranometer, Kipp & Zonen, CM22, SN 020073, WRMC No. 12014; Pyranometer, Kipp & Zonen, CM22, SN 020074, WRMC No. 12013; Pyrgeometer, Eppley, PIR, SN 32802F3, WRMC No. 12011; Pyrheliometer, Kipp & Zonen, CH1, SN 960129, WRMC No. 12007; Short-wave downward (GLOBAL) radiation; Short-wave downward (GLOBAL) radiation, maximum; Short-wave downward (GLOBAL) radiation, minimum; Short-wave downward (GLOBAL) radiation, standard deviation; Station pressure; Thermometer
    Type: Dataset
    Format: text/tab-separated-values, 848003 data points
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    DATA PANGAEA
  • 10
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    Basic measurements of radiation at station Lindenberg (2005-08) (2011)
    PANGAEA
    In:  Meteorologisches Observatorium Potsdam
    Details
    Publication Date: 2024-06-17
    Keywords: Air temperature at 2 m height; BARO; Barometer; Baseline Surface Radiation Network; BSRN; DATE/TIME; Diffuse radiation; Diffuse radiation, maximum; Diffuse radiation, minimum; Diffuse radiation, standard deviation; Direct radiation; Direct radiation, maximum; Direct radiation, minimum; Direct radiation, standard deviation; Germany; HEIGHT above ground; Humidity, relative; HYGRO; Hygrometer; LIN; Lindenberg; Long-wave downward radiation; Long-wave downward radiation, maximum; Long-wave downward radiation, minimum; Long-wave downward radiation, standard deviation; Monitoring station; MONS; Pyranometer, Kipp & Zonen, CM22, SN 020073, WRMC No. 12014; Pyranometer, Kipp & Zonen, CM22, SN 020074, WRMC No. 12013; Pyrgeometer, Kipp & Zonen, CG4, SN 000517, WRMC No. 12015; Pyrheliometer, Kipp & Zonen, CH1, SN 960129, WRMC No. 12007; Short-wave downward (GLOBAL) radiation; Short-wave downward (GLOBAL) radiation, maximum; Short-wave downward (GLOBAL) radiation, minimum; Short-wave downward (GLOBAL) radiation, standard deviation; Station pressure; Thermometer
    Type: Dataset
    Format: text/tab-separated-values, 847435 data points
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