Journal:Sample identifiers and metadata to support data management and reuse in multidisciplinary ecosystem sciences

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Full article title Sample identifiers and metadata to support data management and reuse in multidisciplinary ecosystem sciences
Journal Data Science Journal
Author(s) Damerow, Joan E.; Varadharajan, Charuleka; Boye, Kristin; Brodie, Eoin L.; Burrus, Madison; Chadwick, K. Dana; Crystal-Ornelas, Robert; Elbashandy, Hesham; Alves, Ricardo J.E.; Ely, Kim S.; Goldman, Amy E.; Haberman, Ted; Hendrix, Valerie; Kakalia, Zarine; Kemner, Kenneth M.; Kersting, Annie B.; Merino, Nancy; O'Brien, Fianna; Perzan, Zach; Robles, Emily; Sorensen, Patrick; Stegen, James C.; Walls, Ramona L.; Weisenhorn, Pamela; Zavarin, Mavrik; Agarwal, Deborah
Author affiliation(s) Lawrence Berkeley National Laboratory, SLAC National Accelerator Laboratory, Stanford University, Brookhaven National Laboratory, Pacific Northwest National Laboratory, Metadata Game Changers, Argonne National Laboratory, Lawrence Livermore National Laboratory, University of Arizona
Primary contact Email: JoanDamerow at lbl dot gov
Year published 2021
Volume and issue 20(1)
Article # 11
DOI 10.5334/dsj-2021-011
ISSN 1683-1470
Distribution license Creative Commons Attribution 4.0 International
Website https://datascience.codata.org/articles/10.5334/dsj-2021-011/
Download https://datascience.codata.org/articles/10.5334/dsj-2021-011/galley/1055/download/ (PDF)

Abstract

Physical samples are foundational entities for research across the biological, Earth, and environmental sciences. Data generated from sample-based analyses are not only the basis of individual studies, but can also be integrated with other data to answer new and broader-scale questions. Ecosystem studies increasingly rely on multidisciplinary team-based science to study climate and environmental changes. While there are widely adopted conventions within certain domains to describe sample data, these have gaps when applied in a multidisciplinary context.

In this study, we reviewed existing practices for identifying, characterizing, and linking related environmental samples. We then tested practicalities of assigning persistent identifiers to samples, with standardized metadata, in a pilot field test involving eight United States Department of Energy projects. Participants collected a variety of sample types, with analyses conducted across multiple facilities. We address terminology gaps for multidisciplinary research and make recommendations for assigning identifiers and metadata that supports sample tracking, integration, and reuse. Our goal is to provide a practical approach to sample management, geared towards ecosystem scientists who contribute and reuse sample data.

Keywords: International GeoSample Numbers (IGSN), physical samples, soil, water, plant, leaf, microbial communities, related identifiers, persistent identifiers

Introduction

The study of natural ecosystems requires multidisciplinary science teams to understand and model processes from molecular to global scales.[1] Many research activities involve diverse collections of samples and associated field or laboratory measurements.[2][3] For example, studies of organic matter cycling through plants and soil involves analysis of samples to represent soil biogeochemistry, microbial communities, plant structures, leaf gas exchange, and traits of the specific organisms involved.[4][5][6] Each scientific expert, project team, and discipline has a responsibility to ensure that others can interpret, integrate, and reuse their sample data to help solve emerging problems as our global environment continues to change.[7]

Collaboration across disciplines requires a more unified approach to report basic information about key data entities, such as samples. One challenge in promoting a unified way of reporting sample data is that some research communities have already developed community-specific conventions, including those for omics samples[8][9][10], biodiversity records[11], and geoscience samples.[2][12] A larger challenge is that many researchers use no formal reporting conventions, or exclude information needed to interpret and reuse the data.[13] More coordination is needed across these communities to develop a multidisciplinary reporting format for physical samples that is widely adopted, or to ensure that standards are interoperable. Common reporting would support effective discovery, integration, and reuse of sample data that spans scientific domains.

Sample identifiers are also needed to associate and manage important information describing a sample (i.e., metadata), such as the location, date, environmental context, and purpose of sample collection. For multidisciplinary studies, the task of generating and managing unique sample identifiers and associated metadata can be complicated, particularly as important contextual information is added throughout the data lifecycle.[14] Samples are sent to different collaborators, laboratories, and user facilities, and then combined into a variety of digital records and publications (Figure 1).[15] As a result, scientists face challenges with data management, metadata management, tracking, or the ability to integrate and reuse valuable sample data. Without attention, these inefficiencies result in data and metadata loss and inhibit the potential of scientific discovery.


References

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Notes

This presentation is faithful to the original, with only a few minor changes to presentation. In some cases important information was missing from the references, and that information was added. The original article lists references in alphabetical order; however, this version lists them in order of appearance, by design.