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  • Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu  (1)
  • Springer  (1)
Document type
Keywords
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Years
  • 1
    Electronic Resource
    Electronic Resource
    15N evidence for the origin and cycling of inorganic nitrogen in a small Amazonian catchment (1996)
    Springer
    Biogeochemistry 34 (1996), S. 45-56 
    Details
    ISSN: 1573-515X
    Keywords: Amazônia ; dissolved nitrogen dynamics ; groundwater ; nitrogen isotopes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences
    Notes: Abstract The δ15N composition of the dominant form of dissolved inorganic nitrogen (DIN) was determined in upland groundwater, riparian groundwater, and stream water of the Barro Branco catchment, Amazônas, Brazil. The δ15N composition of organic nitrogen in riparian and upland leaf litter was also determined. The data for these waters could be divided into three groups: upland groundwater DIN predominately composed of NO3 − with δ15N values averaging 6.25 ± 0.9 riparian groundwater DIN primarily composed of NH4 + with δ15N values averaging 9.17 ± 1.0 and stream water DIN predominately composed of NO3 − with δ15N values averaging 4.52 ± 0.8‰ Nitrate samples taken from the stream source and from the stream adjacent to the groundwater transects showed a downstream increase in δ15N from 1.0to 4.5‰ Leaf litter samples averaged 3.5 ± 1.2‰ The observed patterns in isotopic composition, together with previously observed inorganic nitrogen species and concentration shifts between upland, riparian and stream waters, suggest that groundwater DIN is not the primary source of DIN to the stream. Instead, the isotopic data suggest that remineralization of organic nitrogen within the stream itself may be a major source of stream DIN, and that the majority of DIN entering the stream via groundwater flowpaths is removed at the riparian-stream interface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02182954
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Dissolved black carbon (DBC) concentrations and related data from water samples collected between 2011 and 2019 in the Pacific and Atlantic Oceans and from rivers in North America, South America, Africa, and Russia (2022)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-08-19
    Description: Dataset: Stable Isotopes of DBC in River and Ocean Samples
    Description: Pacific Ocean samples were collected from Station ALOHA (22.45°N, 158.00°W) during the Hawaii Ocean Time-series (HOT) 301 cruise aboard the R/V Ka`imikai-O-Kanaloa in April 2018. Atlantic Ocean samples were collected from Hydrostation S (31.67°N, 64.17°W) during the Bermuda Atlantic Time Series (BATS) 358 cruise aboard the R/V Atlantic Explorer in April 2019. River samples were collected from the main stem of the Amazon (Brazil), Congo (Democratic Republic of the Congo), Northern Dvina (Russia), Kolyma (Russia), and Mississippi Rivers (USA) at various time points between 2011 and 2018. Samples were analyzed for dissolved black carbon (DBC), dissolved organic carbon (DOC), and stable carbon isotopes. Data are published in Table 1 and as Supplemental Data in Wagner et al., 2019 (doi: 10.1038/s41467-019-13111-7). For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/878750
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-1756812, NSF Division of Ocean Sciences (NSF OCE) OCE-1756733, NSF Division of Ocean Sciences (NSF OCE) OCE-2017577
    Repository Name: Woods Hole Open Access Server
    Type: Dataset
    Location Call Number Limitation Availability
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    PAPER (OA)
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