The bibliometric data constituting the foundation for the citation-based metrics employed in this ranking were collected on January 12, 2026. The methodology centers on a scientist's D-index (Discipline H-index), a refined metric that exclusively incorporates publications and citation counts relevant to the specific discipline under evaluation, in this case, Ecology and Evolution. This approach ensures that the ranking accurately reflects a researcher’s impact within their specialized field rather than across unrelated disciplines.
Scope of Research and Eligibility Criteria
The ranking is based on an extensive examination of 279,971 scientist profiles identified across a broad array of bibliometric sources spanning multiple scientific disciplines. Within this extensive dataset, three scientists specializing in Ecology and Evolution in Costa Rica were specifically analyzed.
To qualify for inclusion in the ranking, a researcher must have a D-index of at least 30, establishing a baseline of scholarly impact and contribution. Furthermore, a majority of their tier publications must be dedicated to the domain of Ecology and Evolution. In addition to bibliometric thresholds, a scientist's awards and notable achievements within the Ecology and Evolution community were considered to enhance the robustness of the evaluation.
The D-index cut-off for recognizing top scholars is established as increments of 10, proportional to the estimated total number of active researchers in each discipline. This methodology ensures that the ranking consistently incorporates the top 1% of leading experts in the field. Moreover, to confirm the discipline-specific relevance of the metrics, there is a constraint that the difference between a scientist’s general H-index and their D-index does not exceed 30%, promoting consistency between overall research impact and disciplinary focus.
Verification and Quality Assurance
Recognizing that raw bibliometric data alone cannot capture the full breadth and quality of a researcher’s output, the Research.com team implemented rigorous manual verification procedures. Each scientist’s profile was cross-validated against publications indexed in trusted and diverse scholarly sources to confirm authenticity and relevance.
While the number of papers published in influential journals and conference proceedings is not a direct factor in determining a researcher's position within this ranking, it remains a valuable secondary signal of scholarly contribution and prominence within the field.
The ranking positions are ultimately derived from the D-index calculated using data gathered from OpenAlex and CrossRef — the most prominent and extensively utilized bibliometric databases accessible to the global research community.
For a detailed exposition of the methodology and data considerations, we invite readers to consult our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission is to inspire researchers, industry leaders, academic institutions, and policymakers worldwide to closely follow the trajectories of leading experts. We aim to provide a transparent and reliable resource that identifies top scientists within specialized disciplines, regions, and institutions.
By doing so, we foster greater collaboration, recognition, and strategic investment in scientific research. Ultimately, this ranking is a tool to highlight excellence, encourage innovation, and strengthen the global scientific community.
