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  • PANGAEA  (13)
  • Blackwell Publishing Ltd  (1)
Document type
Keywords
Publisher
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  • 1
    Electronic Resource
    Electronic Resource
    Carbon dioxide fluxes of soils and mosses in wet tundra of Taimyr Peninsula, Siberia: controlling factors and contribution to net system fluxes (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 18 (1999), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: Knowledge of the environmental controls of carbon dioxide fluxes is essential for understanding the dynamics of carbon exchange between ecosystems and atmosphere. In this study we investigated soil respiration and moss photosynthesis as well as their contribution to the net carbon dioxide flux of two different wet tundra systems. During two summers, in situ carbon dioxide fluxes were measured in a tussock tundra and in a low-centre polygonal tundra on Taimyr Peninsula, central Siberia. Measurements were carried out by means of a multichannel gas exchange system. Results show pronounced differences in soil respiration rates as related to microscale topography, mainly due to differences of soil water table and soil temperatures. Modelling of soil respiration for individual microsites revealed differences of process performance with respect to both factors. The wet microsites showed the highest potential regarding an increase of soil respiration rates in warmer and drier climate change scenarios. Another important process compensating the CO2 release from the soil was the photosynthesis of the moss layer, assimilating as much as 51% to 98% of the daily amount of carbon dioxide released from wet tundra soils. This result demonstrates the importance of mosses in the context of tundra ecosystem processes. The magnitude of net system fluxes of the whole system at the depression of the polygonal tundra was strongly influenced by changes in soil water table. Consequently, any changes of the hydrology, as anticipated in the context of global change, would effectively alter the carbon balance of wet tundra systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.1999.tb00301.x
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Tab. 2: Chemical and microbial properties of soils from Casey Station (Wilkes Land) with respect to soil types (2011)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Adenosine 5-Triphosphate; Calcium; Casey_Station; Chlorine; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Loss on ignition; Magnesium; pH; Phosphate; Sample code/label; Sample type; STAT; Station; Vincennes Bay, Antarctica; Water content, wet mass
    Type: Dataset
    Format: text/tab-separated-values, 120 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Tab.2: Soil properties in Nunavut and Northwest Territories, Canada (2011)
    PANGAEA
    In:  Supplement to: Bölter, Manfred; Blume, Hans-Peter; Wetzel, Holger (2006): Properties, formation, classification and ecology of Aarctic soils: results from the Tundra Northwest Expedition 1999 (Nunavut and Northwest Territories, Canada). Polarforschung, 73(2/3), 89-101, hdl:10013/epic.29914.d001
    Details
    Publication Date: 2023-03-14
    Description: Soils of Arctic Canada were sampled during the Tundra Northwest Expedition 1999 (TNW-99) at 17 sites that cover the ecological regions of the High, Mid and Low Arctic zones. Almost all locations consisted of a mesic and a dry habitat and are described with respect to their ecological function. Analyses on soil characteristics were performed for soil morphology, texture and chemistry. The data showed a wide variability due to local aspects. Statistical evidence did not indicate that larger-than-local ecological regions could be defined in most cases by either soil chemical characteristics or vegetation patterns. Soil classification according to the World Reference Base of Soils (WRB) showed the dominance of different Cryosols, but also Gelic Cambisols and Gelic Regosols were found; according to US Soil Taxonomy, they could be classified as different Orthels, Turbels and Histels. Low temperature, high stone content and low nutrient availability were noted as factors hampering plant growth and soil activity.
    Keywords: 10d; 10m; 12d; 12m; 13d; 13m; 14d; 14m; 15d; 15m; 16d; 16m; 17d; 17m; 1m; 2d; 2m; 3d; 3m; 4d; 4m; 6d; 6m; 7d; 7m; 8d; 8m; 9d; 9m; Area/locality; Baffin Island; Banks Island North; Banks Island S; Bathurst Island S; Calcium carbonate; Carbon, organic, total; Carbon/Nitrogen ratio; Cation exchange capacity; Color description; Conductivity; Depth, bottom/max; Depth, reference; DEPTH, sediment/rock; Depth, top/min; Description; Devon Island; Ellef Ringnes Island; Ellesmere; Event label; Horizon; Iron; Ivvavik; King William Island; Manganese; Melville Island; Melville Peninsula; Nitrogen, total; Paulatuk; pH; Phosphorus; Ratio; Sampling on land; Sand; Saturation; Silt; Size fraction 〈 0.002 mm, clay; Skeleton; SOIL; Soil profile; Somerset Island; Structure; Surface description; TNW-99; TNW-99_10d; TNW-99_10m; TNW-99_12d; TNW-99_12m; TNW-99_13d; TNW-99_13m; TNW-99_14d; TNW-99_14m; TNW-99_15d; TNW-99_15m; TNW-99_16d; TNW-99_16m; TNW-99_17d; TNW-99_17m; TNW-99_1m; TNW-99_2d; TNW-99_2m; TNW-99_3d; TNW-99_3m; TNW-99_4d; TNW-99_4m; TNW-99_6d; TNW-99_6m; TNW-99_7d; TNW-99_7m; TNW-99_8d; TNW-99_8m; TNW-99_9d; TNW-99_9m; Tundra Northwest 1999; Ungava Peninsula, Nunavik; Wollaston Peninsula
    Type: Dataset
    Format: text/tab-separated-values, 1157 data points
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    DATA PANGAEA
  • 4
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    Tab.2: Results of onbaord microscopic inspections of surface samples
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: 10d; 10m; 11d; 11m; 12m; 13d; 13m; 14d; 14m; 15d; 15m; 16m; 17m; 1m; 2d; 2m; 3d; 3m; 4d; 4m; 5m; 6d; 6m; 7d; 7m; 8d; 8m; 9d; 9m; Baffin Island; Banks Island North; Banks Island S; Bathurst Island E; Bathurst Island S; Cape Bathurst; Date/Time of event; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Description; Devon Island; Ellef Ringnes Island; Ellesmere; Event label; Ivvavik; King William Island; Latitude of event; Location of event; Longitude of event; Melville Island; Melville Peninsula; N; Nunk; Paulatuk; R; Resolute; Sample code/label; Sampling on land; SOIL; Soil profile; Somerset Island; TNW-99; TNW-99_10d; TNW-99_10m; TNW-99_11d; TNW-99_11m; TNW-99_12m; TNW-99_13d; TNW-99_13m; TNW-99_14d; TNW-99_14m; TNW-99_15d; TNW-99_15m; TNW-99_16m; TNW-99_17m; TNW-99_1m; TNW-99_2d; TNW-99_2m; TNW-99_3d; TNW-99_3m; TNW-99_4d; TNW-99_4m; TNW-99_5m; TNW-99_6d; TNW-99_6m; TNW-99_7d; TNW-99_7m; TNW-99_8d; TNW-99_8m; TNW-99_9d; TNW-99_9m; TNW-99_N; TNW-99_R; Tundra Northwest 1999; Ungava Peninsula, Nunavik; Wollaston Peninsula
    Type: Dataset
    Format: text/tab-separated-values, 237 data points
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    DATA PANGAEA
  • 5
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    Microbiological investigations of the Canadian tundra
    PANGAEA
    In:  Supplement to: Bölter, Manfred (2006): Microbiological communities and properties of arctic soils: results of the Tundra Northwest Expedition 1999 (Nunavut and Northwest Territories, Canada). Polarforschung, 73(2/3), 103-110, hdl:10013/epic.29915.d001
    Details
    Publication Date: 2023-05-12
    Description: Microbial communities were analyzed at 17 sites visited during the expedition Tundra Northwest 1999 (TNW-99) by microscopic analyses (epifluorescence microscopy and image analyses). The data were used to describe the communities of bacteria, fungi and algae in detail by number, biovolume and biomass. Great variability was found, which could be related to organic matter content of soils and features of vegetation patterns. The amounts (numbers and abundance) of organisms and data on microbial biomass are discussed in relation to other polar environments of the Northern and Southern Hemispheres.
    Keywords: 10d; 10m; 11d; 11m; 12m; 13d; 13m; 14d; 14m; 15d; 15m; 16m; 17m; 1m; 2d; 2m; 3d; 3m; 4d; 4m; 5m; 6d; 6m; 7d; 7m; 8d; 8m; 9d; 9m; Baffin Island; Banks Island North; Banks Island S; Bathurst Island E; Bathurst Island S; Cape Bathurst; Devon Island; Ellef Ringnes Island; Ellesmere; Ivvavik; King William Island; Melville Island; Melville Peninsula; N; Nunk; Paulatuk; R; Resolute; Sampling on land; SOIL; Soil profile; Somerset Island; TNW-99; TNW-99_10d; TNW-99_10m; TNW-99_11d; TNW-99_11m; TNW-99_12m; TNW-99_13d; TNW-99_13m; TNW-99_14d; TNW-99_14m; TNW-99_15d; TNW-99_15m; TNW-99_16m; TNW-99_17m; TNW-99_1m; TNW-99_2d; TNW-99_2m; TNW-99_3d; TNW-99_3m; TNW-99_4d; TNW-99_4m; TNW-99_5m; TNW-99_6d; TNW-99_6m; TNW-99_7d; TNW-99_7m; TNW-99_8d; TNW-99_8m; TNW-99_9d; TNW-99_9m; TNW-99_N; TNW-99_R; Tundra Northwest 1999; Ungava Peninsula, Nunavik; Wollaston Peninsula
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 6
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    Tab. 4: Element and salt contents of typical soils from Casey (2011)
    PANGAEA
    Details
    Publication Date: 2023-06-19
    Keywords: Ammonium; Calcium; Casey; Chloride; Chromium; Cobalt; Copper; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; g0278; HNO3/HCL4-extracts; Indian Ocean; Iron; Lead; Magnesium; Manganese; Nitrate; pH; Sample code/label; SeaLevel; Sodium; Strontium; Sulfate; TGS; Tide gauge station; Zinc
    Type: Dataset
    Format: text/tab-separated-values, 173 data points
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    DATA PANGAEA
  • 7
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    Tab.3: Bacterial communities of soil profiles
    PANGAEA
    Details
    Publication Date: 2023-06-23
    Keywords: 1m; 2d; 2m; 3d; 3m; 4d; 4m; 5m; 6d; 6m; 7d; 7m; 8d; 8m; 9d; 9m; Bacteria, biovolume per unit sediment mass; Bacteria, cell biovolume; Bacteria, per unit sediment mass; Bacteria, surface; Bacteria, surface total; Banks Island S; Bathurst Island E; Bathurst Island S; Calculated; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Event label; King William Island; Melville Peninsula; Paulatuk; Ratio; Sampling on land; SOIL; Soil profile; Somerset Island; TNW-99; TNW-99_1m; TNW-99_2d; TNW-99_2m; TNW-99_3d; TNW-99_3m; TNW-99_4d; TNW-99_4m; TNW-99_5m; TNW-99_6d; TNW-99_6m; TNW-99_7d; TNW-99_7m; TNW-99_8d; TNW-99_8m; TNW-99_9d; TNW-99_9m; Tundra Northwest 1999; Ungava Peninsula, Nunavik; Wollaston Peninsula
    Type: Dataset
    Format: text/tab-separated-values, 448 data points
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    DATA PANGAEA
  • 8
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    Table 3: 14C activity of thallus sections of Usnea aurantiaco-atra (1992)
    PANGAEA
    Details
    Publication Date: 2023-08-26
    Keywords: Activity; Activity, standard deviation; Arctowski_Meteo; Arctowski-Station; Henryk Arctowski Polish Ant. Station; King George Island, Antarctic Peninsula; Long-term meteorological data; Material; Sample, optional label/labor no; STAT; Station; δ13C
    Type: Dataset
    Format: text/tab-separated-values, 25 data points
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    DATA PANGAEA
  • 9
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    14C activity of Antarctic lichens (1992)
    PANGAEA
    In:  Supplement to: Willkomm, Horst; Bölter, Manfred; Kappen, Ludger (1992): Age estimation of Antarctic Macrolichens by radiocarbon measurements. Polarforschung, 61(2/3), 103-112, hdl:10013/epic.29685.d001
    Details
    Publication Date: 2023-08-26
    Description: By the nuclear bomb tests during the 1950s and early 1960s, the radiocarbon content of the atmospheric CO, on the Southern Hemisphere rose within a few years from 98 to 162% of the standard recent value and then dropped to 122% (at the end of 1984). This rapid fluctuation was used to determine the lifetime of five species of lichens collected in the beginning of 1985 in the maritime Antarctic. Under the assumption that Lichens assimilate each year carbon at the same rate and that carbon once fixed at least in main branches never will be exchanged later on. The age of mature thalli of Caioplaco regalis, Ramalino tetebrata and Ustiea antarctica was determined to 32 years, while U, aurantiaco-atra and Himantormia lugubris gave an age of ca. 38 years and ca. 60 years, respectively.
    Keywords: Arctowski_Meteo; Arctowski-Station; Henryk Arctowski Polish Ant. Station; King George Island, Antarctic Peninsula; Long-term meteorological data; STAT; Station
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 10
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    Soil investigations at Casey and Arctowski stations (2011)
    PANGAEA
    In:  Supplement to: Bölter, Manfred; Blume, Hans-Peter; Erlenkeuser, Helmut (1995): Pedologic, isotopic and microbiological properties of Antarctic soils. Polarforschung, 64(1), 1-7, hdl:10013/epic.29722.d001
    Details
    Publication Date: 2023-08-26
    Description: Soils from the maritime (Arctowski Station, King George Island) and coastal continental (Casey Station, Wilkes Land) Antarctic region are described with respect to pedology, isotopic and microbial environments. They are classified as leptosols, regosols, podzols, and histosols. Only surface layers (1-3 cm) contain sufficient organic material to provide a favourable environment for microbial communities and, further, for accumulations of organic matter. Variability of biological and chemical properties is high on a centimeter scale with depth and in the range of decimeters in horizontal scales.
    Keywords: Arctowski_Meteo; Arctowski-Station; Casey_Station; Henryk Arctowski Polish Ant. Station; King George Island, Antarctic Peninsula; Long-term meteorological data; STAT; Station; Vincennes Bay, Antarctica
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
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