Data Sources and Metrics
The 5th edition of the Research.com Best Ecology and Evolution Scientists in New Zealand Ranking is primarily informed by bibliometric data sourced from OpenAlex and CrossRef, alongside multiple additional reputable data repositories. These platforms represent some of the most comprehensive and authoritative databases available to the scientific community for publication and citation data. The citation-based metrics, fundamental to constructing the ranking, were collected on January 12, 2026. A key component of the ranking methodology is the use of the D-index (Discipline H-index), which calculates each scientist’s h-index specifically within the discipline under examination. This approach ensures that only publications and citation metrics relevant to Ecology and Evolution are considered, thereby providing a focused and discipline-specific evaluation of scholarly impact.
Scope of Research and Qualification Criteria
Our analysis began with an examination of 279,971 scientist profiles aggregated from several bibliometric sources spanning all scientific disciplines. Among these, 112 scientists specializing in Ecology and Evolution were identified for inclusion. To qualify for the ranking, a scientist’s D-index must be at least 30, ensuring recognition of established expertise. Additionally, a majority of the candidate’s tier publications must fall within the Ecology and Evolution domain, guaranteeing disciplinary relevance.
Consideration was also given to notable awards and achievements in Ecology and Evolution, adding a qualitative dimension to the quantitative metrics. The D-index threshold for identifying top researchers is dynamically adjusted in increments of 10, reflecting the estimated total number of scholars within each discipline. This mechanism simultaneously maintains inclusivity by ensuring that the top 1% of leading scholars are incorporated into the ranking. Furthermore, consistency between a scientist’s general H-index and their discipline-specific D-index is maintained, with a proximity threshold of 30% or less between these metrics to ensure alignment of overall and field-specific scholarly impact.
Additional Verification Practices
Recognizing the limitations inherent in relying solely on raw bibliometric data, the Research.com team conducted thorough manual verification of all scientist profiles included in the ranking. Each profile was cross-correlated against publications listed in a broad spectrum of trustworthy sources to ascertain accuracy and authenticity. Although the quantity of papers published in leading journals and conference proceedings does not directly affect a researcher’s position in the Research.com ranking, it serves as an important secondary indicator of a scientist’s contribution and standing within their specific research area.
The final position of each scientist in the ranking is determined using their D-index, compiled from OpenAlex and CrossRef—the leading bibliometric databases widely respected within the research community. This rigorous and transparent approach ensures the credibility and reliability of the ranking. For a comprehensive overview of the methodology, readers are encouraged to consult our methodology page.
Research.com’s Mission Behind the Ranking
Research.com aims to inspire researchers, industry stakeholders, and policymakers worldwide to engage with and understand the trajectories of leading scientific experts. By providing a clear and authoritative way to identify the foremost scholars in specific fields, countries, and institutions, this ranking helps illuminate centers of excellence and emerging trends in Ecology and Evolution research. Our commitment to meticulous data analysis and verification embodies our broader vision of fostering transparency and collaboration within the global scientific community.
