Data Sources and Citation Metrics
The 5th edition of the Research.com Best Plant Science and Agronomy Scientists in Norway Ranking was developed through a meticulous aggregation of bibliometric data primarily sourced from OpenAlex and CrossRef, alongside multiple other reputable data repositories. These comprehensive databases provide extensive citation and publication metadata critical for accurate assessment of scientific impact. The bibliometric data used to devise the citation-based metrics for this ranking were collected on January 12, 2026, ensuring the inclusion of the most recent scholarly outputs and citations available at that time.
A scientist's position within the ranking is determined exclusively by their D-index (Discipline H-index). This indicator refines the traditional H-index concept by considering only publications and citation metrics within the examined discipline—Plant Science and Agronomy—thereby providing a more precise measure of a researcher’s impact in this specific field.
Scope and Criteria for Inclusion
The ranking encompasses 279,971 scientist profiles identified initially from a broad spectrum of bibliometric sources covering all scientific disciplines. For Plant Science and Agronomy specifically, 13 scientist profiles were examined in-depth. To qualify for inclusion in this ranking, a candidate's D-index threshold was set at a minimum of 30, accompanied by the requirement that the majority of their tier publications must pertain to Plant Science and Agronomy.
In addition to bibliometric criteria, a scientist's awards and recognized achievements within the field were also considered to ensure that the ranking reflects both quantitative and qualitative dimensions of research excellence. The D-index threshold employed for identifying top researchers is calibrated in increments of 10 relative to the estimated total number of active scholars per discipline. This approach guarantees that the top 1% of leading scholars within Plant Science and Agronomy are represented. Furthermore, a proximity criterion was applied whereby candidates' general H-index and their D-index must differ by no more than 30%, ensuring consistency between overall and discipline-specific research impact.
Verification and Quality Assurance
Recognizing that raw bibliometric data alone cannot fully capture the nuances of scholarly contribution, the Research.com team implemented an additional layer of manual verification. Each scientist’s profile was carefully reviewed and cross-validated against a wide array of trustworthy publication sources to strengthen the credibility of the ranking.
While the absolute number of papers published in high-impact journals and prestigious conference proceedings does not directly affect the positioning within the ranking, it is acknowledged as a valuable secondary indicator of a scientist’s influence and active contribution to the field.
The ranking positions are ultimately established using each researcher’s D-index, derived from authoritative bibliometric databases OpenAlex and CrossRef, which are widely recognized for their comprehensiveness and reliability by the international research community. For deeper insights into the full methodology and data processing techniques, please refer to our methodology page.
Research.com’s Mission
At Research.com, our mission is to empower researchers, industry leaders, and policymakers worldwide by illuminating where leading experts are pioneering advancements across scientific disciplines. By providing a transparent and rigorously developed lens through which the top experts can be identified—whether by field, country, or research institution—we aim to foster stronger collaborations, informed decision-making, and greater acknowledgment of scientific excellence within the global community.
This ranking is the product of careful, comprehensive work intended to establish a credible, meaningful resource that supports the advancement of Plant Science and Agronomy research in Norway and beyond.
