The ranking methodology centers on the use of the D-index (Discipline H-index), a refined bibliometric indicator that accounts exclusively for a researcher’s publications and citation metrics within a specific discipline. By focusing on discipline-specific output, the D-index provides a precise evaluation of scholarly impact in Ecology and Evolution, distinguishing it from general indices that aggregate across all fields.
Scope of Research and Inclusion Criteria
Our assessment encompassed an extensive dataset of 279,971 scientist profiles aggregated from diverse bibliometric platforms, spanning all scientific disciplines globally. Within this comprehensive pool, a targeted cohort of 90 scientists specializing specifically in Ecology and Evolution was identified for in-depth evaluation.
To qualify for inclusion in the ranking, a scientist’s D-index in Ecology and Evolution must have reached a minimum threshold of 30. Additionally, a majority of their tier publications were required to be directly aligned with Ecology and Evolution. Consideration was also given to the researcher’s awards and other notable achievements within the discipline, ensuring recognition of both quantitative impact and qualitative excellence.
The threshold for the D-index is dynamically calibrated in increments of 10 according to the estimated total number of scholars within each discipline. This approach guarantees that approximately the top 1% of leading scholars in Ecology and Evolution are consistently incorporated. Furthermore, to ensure disciplinary focus, a maximum proximity of 30% between a scientist’s overall H-index and their D-index was enforced.
Verification and Methodological Rigor
Recognizing that raw bibliometric data represent only one dimension of scholarly evaluation, the Research.com team implemented thorough manual verification protocols. Each scientist profile was carefully cross-checked against publication records sourced from an array of trustworthy and authoritative academic repositories.
While the number of publications in prominent journals and conference proceedings does not directly influence a researcher’s rank, it serves as a valuable secondary indicator of their contributions to Ecology and Evolution research. The final rank ordering is determined by the D-index, calculated on information drawn chiefly from OpenAlex and CrossRef, widely regarded as the most prominent and reliable open bibliometric databases available to the research community.
For detailed insights into the data collection, verification processes, and ranking methodology, readers are encouraged to visit our methodology page.
Research.com’s Mission and Purpose
The driving mission behind the creation of this ranking is to inspire researchers, academic institutions, companies, and policymakers worldwide to gain clear visibility into where leading expertise is concentrated and evolving. By providing a transparent, data-driven mechanism to identify top-tier experts in Ecology and Evolution across Portugal, we aim to foster collaboration, inform decision-making, and celebrate scientific excellence.
Through this endeavor, the global scientific community gains a valuable resource to recognize outstanding contributions, track emerging trends, and facilitate connections among scholars, institutions, and stakeholders invested in advancing the ecological and evolutionary sciences.
