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Guidelines for reporting and archiving Pb-210 sediment chronologies to improve fidelity and extend data lifecycle
Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Arts, Department of Archaeology and Ancient History. Univ Basel, Dept Environm Sci, Geoecol, Klingelbergstr 27, CH-4056 Basel, Switzerland;Univ York, York Inst Trop Ecosyst, Dept Environm & Geog, York YO10 5NG, N Yorkshire, England.ORCID iD: 0000-0002-4439-2590
Utah State Univ, Dept Watershed Sci, Logan, UT 84321 USA.
Queens Univ Belfast, Sch Nat & Built Environm, Belfast BT7 1NN, Antrim, North Ireland.
Univ Wisconsin, Dept Geog, 550 N Pk St, Madison, WI 53706 USA.
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2019 (English)In: Quaternary Geochronology, ISSN 1871-1014, E-ISSN 1878-0350, Vol. 52, p. 77-87Article in journal (Refereed) Published
Abstract [en]

Radiometric dating methods are essential for developing geochronologies to study Late Quaternary environmental change and 210Pb dating is commonly used to produce age-depth models from recent (within 150 years) sediments and other geoarchives. The past two centuries are marked by rapid environmental socio-ecological changes frequently attributed to anthropogenic land-use activities, modified biogeochemical cycles, and climate change. Consequently, historical reconstructions over this recent time interval have high societal value because analyses of these datasets provide understanding of the consequences of environmental modifications, critical ecosystem thresholds, and to define desirable ranges of variation for management, restoration, and conservation. For this information to be used more broadly, for example to support land management decisions or to contribute data to regional analyses of ecosystem change, authors must report all of the useful age-depth model information. However, at present there are no guidelines for researchers on what information should be reported to ensure Pb-210 data are fully disclosed, reproducible, and reusable; leading to a plethora of reporting styles, including inadequate reporting that reduces potential reusability and shortening the data lifecycle. For example, 64% of the publications in a literature review of Pb-210 dated geoarchives did not include any presentation of age uncertainty estimates in modeled calendar ages used in age-depth models. Insufficient reporting of methods and results used in Pb-210 dating geoarchives severely hampers reproducibility and data reusability, especially in analyses that make use of databased palaeoenvironmental data. Reproducibility of data is fundamental to further analyses of the number of palaeoenvironmental data and the spatial coverage of published geoarchives sites. We suggest, and justify, a set of minimum reporting guidelines for metadata and data reporting for Pb-210 dates, including an IEDA (Interdisciplinary Earth Data Alliance), LiPD (Linked Paleo Data) and generic format data presentation templates, to contribute to improvements in data archiving standards and to facilitate the data requirements of researchers analyzing datasets of several palaeoenvironmental study sites. We analyse practices of methods, results and first order interpretation of Pb-210 data and make recommendations to authors on effective data reporting and archiving to maximize the value of datasets. We provide empirical evidence from publications and practitioners to support our suggested reporting guidelines. These guidelines increase the scientific value of Pb-210 by expanding its relevance in the data lifecycle. Improving quality and fidelity of environmental datasets broadens interdisciplinary use, lengthens the potential lifecycle of data products, and achieves requirements applicable for evidenced-based policy support.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 52, p. 77-87
Keywords [en]
Data curation, Geochronology, Lead-210, Metadata, Radiometric dating, Radionuclide, Reproducibility, Transparency
National Category
Geosciences, Multidisciplinary
Identifiers
URN: urn:nbn:se:uu:diva-389810DOI: 10.1016/j.quageo.2019.04.003ISI: 000471081100007OAI: oai:DiVA.org:uu-389810DiVA, id: diva2:1339703
Funder
Swedish Research CouncilSwedish Research Council Formas, 2016-06355Sida - Swedish International Development Cooperation AgencyAvailable from: 2019-07-30 Created: 2019-07-30 Last updated: 2019-07-30Bibliographically approved

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Courtney Mustaphi, Colin J.

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