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  • PANGAEA  (2)
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  • 1
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    N water chemistry from small Arctic streams in relation to vegetation cover (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Description: In the Arctic, little information is available, especially in terms of N availability and composition (i.e., nitrate, ammonium, and dissolved organic nitrogen) from small, flowing waters. This data set aims to quantify N concentrations across small Arctic streams and explore the link between terrestrial vegetation and stream water N concentration. The data set is the result of a literature study where data on N water chemistry was collected and combined from peer-reviewed, published articles and data sets selected by specific criteria. 20 articles met the selected criteria along with four datasets from databases resulting in a total of 2381 observations on N water chemistry from Arctic flowing waters from 1996 to 2021. Bioclimate subzones, NDVI and phytomass describe vegetation. Data on dissolved organic nitrogen (DON) was scarce: only 161 of the 2381 observations contained DON data. We found that nitrate (NO3-), ammonium (NH4+) and DON ranged undetectable to 1155, 547 and 1587 µg N/l, respectively. We found that sparsely vegetated areas had higher stream water N-concentrations, while barren areas and higher vegetated areas had lower stream water N-concentrations.
    Keywords: Ammonium; Ammonium/Nitrate ratio; Arctic; Arctic_streams; Area/locality; Biomass, aboveground; Category; Country; Date; Description; Identification; LATITUDE; Literature based; LONGITUDE; Month; Name; Nitrate; Nitrogen; Nitrogen, inorganic, dissolved; Nitrogen, inorganic, dissolved/Nitrogen, organic, dissolved ratio; Nitrogen, organic, dissolved; Nitrogen, total dissolved; Normalized Difference Vegetation Index; Organic carbon, soil; Precipitation, annual mean; Reference/source; streams; Subzone; Temperature, air, annual mean; Temperature, air, maximum; Temperature, air, minimum; Temperature, annual mean; Uniform resource locator/link to reference; Water sample; WS; Year of publication; Year of sampling
    Type: Dataset
    Format: text/tab-separated-values, 65302 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Unknown
    Stream water chemistry and landscape characteristics in Zackenberg Valley, NE Greenland summer 2021 (2023)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Description: The data contains water chemistry and spectral catchment NDVI for 14 streams in Zackenberg Valley in Northeast Greenland, sampled summer 2021 from 10th July to 15th September. We collected water samples for measuring water chemistry, and we determined landscape parameters using GIS based tools. The data was collected at three sampling periods in summer 2021 in the Zackenberg Research Station (74°28'N, 20°34'W). The area has a polar tundra climate with mean annual air temperature of -9.1 °C. Water chemistry (i.e. dissolved and particulate nitrogen, phosphorus, carbon; dissolved iron and silicate) and catchment characteristics (i.e. catchment area, altitude, slope, aspect, NDVI, snow cover) was measured for each of the 14 stream sites. Water chemistry samples were collected and analyzed using standard methods, and landscape characteristics were determined using GIS resources. The data was collected in order to study relationships between landscape characteristics and stream water chemistry. The water samples were collected by a team of two people, and the detailed methods are given below.
    Keywords: A; Ammonium; Ammonium/Nitrogen, inorganic, dissolved ratio; Arctic; Aspect; Calcium/Magnesium ratio; Calculated; Carbon, organic, dissolved; Catchment area; Conductivity, specific; Conductivity Meter, WTW, ProfiLine Cond 3110; Date/Time of event; Discharge; Elevation of event; Event label; G; Greening; Inductively Coupled Plasma - Mass Spectrometry (ICP-MS), PerkinElmer Instruments, Optima 2000 DV; Iron; J1; J2; KA; KC; Lachat QuickChem 8500 flow injection autoanalyser; Latitude of event; Longitude of event; LT; Month; MULT; Multiple investigations; Nitrate; Nitrate/Ammonium ratio; Nitrate/Nitrogen, inorganic, dissolved ratio; Nitrogen; Nitrogen, inorganic, dissolved; Nitrogen, inorganic, dissolved/Nitrogen, organic, dissolved ratio; Nitrogen, inorganic, dissolved/Nitrogen, total, dissolved ratio; Nitrogen, organic, dissolved; Nitrogen, total dissolved; Normalized Differenced Vegetation Index, median; Normalized Difference Vegetation Index; P; Potassium/Silicon ratio; rivers; Silicon; Site; Slope; Snow coverage; streams; Sum cations; T; Temperature, water; Total organic carbon analyzer(TOC-VCPH/TNM-1), Shimadzu; W1; W2; W3; W4; W5; water chemistry; Zackenberg_AugA; Zackenberg_AugG; Zackenberg_AugJ1; Zackenberg_AugJ2; Zackenberg_AugKA; Zackenberg_AugKC; Zackenberg_AugLT; Zackenberg_AugP; Zackenberg_AugT; Zackenberg_AugW1; Zackenberg_AugW5; Zackenberg_JulyA; Zackenberg_JulyG; Zackenberg_JulyJ1; Zackenberg_JulyJ2; Zackenberg_JulyKA; Zackenberg_JulyKC; Zackenberg_JulyLT; Zackenberg_JulyP; Zackenberg_JulyT; Zackenberg_JulyW1; Zackenberg_JulyW2; Zackenberg_JulyW3; Zackenberg_SeptA; Zackenberg_SeptG; Zackenberg_SeptKA; Zackenberg_SeptKC; Zackenberg_SeptKC2; Zackenberg_SeptT; Zackenberg_SeptW1; Zackenberg_SeptW2; Zackenberg_SeptW3; Zackenberg_SeptW4; Zackenberg_SeptW5; Zackenberg, Northeast Greenland
    Type: Dataset
    Format: text/tab-separated-values, 950 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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