Data Sources and Metrics
The 5th edition of the Research.com Best Ecology and Evolution Scientists in Ireland Ranking is founded on comprehensive bibliometric data sourced primarily from OpenAlex and CrossRef, in addition to multiple other reputable data platforms. The bibliometric data used to devise the citation-based metrics integral to the ranking were meticulously collected on January 12, 2026. A scientist’s position in the ranking is determined based on their D-index (Discipline H-index), a refined metric which exclusively considers papers and citation statistics pertinent to the examined discipline—Ecology and Evolution in this instance.
Scope of Research Considered
The ranking originates from an extensive examination of 279,971 scientist profiles identified across a variety of bibliometric data sources, covering all disciplines. Within this corpus, 13 scientists specializing specifically in Ecology and Evolution were analyzed in detail. To qualify for inclusion in the ranking, candidates were required to have a D-index of at least 30, and a majority of their tier publications needed to be directly within the domain of Ecology and Evolution. Additionally, recognition of a scientist’s awards and achievements in this field was incorporated as a supplementary factor.
The D-index threshold is set at increments of 10 relative to the estimated number of scholars within each discipline to ensure proportional representation, while simultaneously guaranteeing that the top 1% of leading scholars are incorporated into the list. Furthermore, to maintain focus on disciplinary relevance, qualifying scientists must have a proximity of 30% or less between their general H-index and their D-index.
Additional Verification Practices
Research.com’s methodology acknowledges that raw bibliometric data alone cannot serve as an absolute measure of a scholar’s output. In recognition of this, all scientist profiles included in the ranking underwent thorough manual verification. This process involved cross-correlation of publications against a broad spectrum of trustworthy sources to ensure data integrity and precision.
While the number of papers published in prominent journals and conference proceedings does not directly affect a researcher’s ranking position, it constitutes a valuable secondary signal reflecting a scientist's contribution to research within their specific field. The primary ranking metric remains the D-index, which is derived from data gathered through OpenAlex and CrossRef—two of the most prominent and respected bibliometric databases accessible to the research community.
For a comprehensive understanding of the methods and metrics employed, readers are encouraged to consult our methodology page.
The Research.com Agenda
Research.com’s mission behind the creation of this ranking is to motivate researchers, companies, and policymakers worldwide to examine the trajectories of leading experts. By providing a transparent and rigorously curated overview, we aim to facilitate the broader scientific community’s recognition of top experts in specific fields of study, whether at national, institutional, or disciplinary levels. This initiative supports informed decision-making and fosters collaboration by illuminating who the leading voices are within Ecology and Evolution research in Ireland and beyond.