Data Sources and Ranking Criteria
The 5th edition of the Research.com Best Ecology and Evolution Scientists in Philippines Ranking is grounded on comprehensive bibliometric data primarily sourced from OpenAlex and CrossRef, alongside multiple other reputable data sources. These platforms are widely recognized for their extensive collection of scholarly publications and citation information. The citation-based metrics that underpin this ranking were collected on January 12, 2026, ensuring the data reflects the most current scholarly outputs available at the time of analysis.
A scientist’s position within this ranking is determined by a discipline-specific metric known as the D-index (Discipline H-index). The D-index exclusively incorporates papers and citation metrics relevant to the examined discipline—Ecology and Evolution in this case—thus providing a precise and focused evaluation of each researcher’s scholarly impact within their field.
Scope of Research and Qualification Criteria
The ranking examined a total of 279,971 scientist profiles aggregated from a diverse array of bibliometric data sources across all academic disciplines. Specifically, 1,000 scientists identified within Ecology and Evolution were considered for inclusion. To qualify for the ranking, a researcher’s D-index had to meet a minimum threshold of 30, and the majority of their tier publications were required to fall within the Ecology and Evolution domain.
In addition to quantitative metrics, scientists’ awards and achievements relevant to Ecology and Evolution were also factored into the evaluation process. The D-index threshold for top researcher consideration is incrementally adjusted by steps of 10 depending on the total estimated number of scholars within each discipline. This approach ensures that at least the top 1% of leading specialists are represented in the ranking. Furthermore, to maintain consistency and disciplinary relevance, a scientist’s general H-index and their D-index must not differ by more than 30% in proximity.
Verification and Validation Procedures
We recognize that raw bibliometric data alone cannot serve as an absolute or definitive measure of a scholar’s output. Accordingly, every scientist profile included in the ranking underwent thorough manual verification and cross-correlation using publications indexed in a wide range of trustworthy academic sources. While the quantity of papers published in prominent journals and conference proceedings does not directly influence a researcher’s position in the ranking, it offers a meaningful secondary signal reflecting their contribution to the field.
The ranking positions themselves are established strictly based on each researcher’s D-index, calculated using information aggregated from OpenAlex and CrossRef—two of the most prominent, open-access bibliometric databases trusted by the global research community. We welcome readers to explore further details about our approach and methodology on our methodology page.
Research.com’s Mission and Vision
The creation of this ranking aligns with Research.com’s overarching mission to inspire researchers, industry leaders, policymakers, and academic institutions worldwide to closely monitor the trajectories and contributions of leading scientific experts. We aim to provide a transparent, authoritative resource that enables the global scientific community to identify and recognize top experts not only in Ecology and Evolution but across a wide range of disciplines, geographic contexts, and research institutions.
By delivering meticulously curated and rigorously validated rankings, Research.com strives to highlight excellence in research and foster collaboration, innovation, and informed decision-making across the scientific ecosystem.
