Data Sources and Citation Metrics
The 5th edition of the Research.com Best Ecology and Evolution Scientists in Italy Ranking is primarily based on comprehensive bibliometric data sourced from OpenAlex and CrossRef, complemented by multiple other reputable data repositories in the scholarly landscape. The citation-based metrics that form the backbone of this ranking were meticulously compiled on January 12, 2026. Each scientist’s ranking position is determined by their D-index (Discipline H-index), a refined metric that exclusively accounts for papers and citation data pertinent to the specific discipline under examination—Ecology and Evolution in this case. This targeted approach ensures an accurate reflection of a researcher’s impact within their field without confounding influences from unrelated areas of study.
Scope and Inclusion Criteria
The ranking’s scope is defined through the analysis of 279,971 scientist profiles identified from an array of bibliometric information sources across all disciplines. Within this broader dataset, 180 scientists specializing in Ecology and Evolution were rigorously examined. To qualify for inclusion in the ranking, a scientist must possess a D-index of at least 30, and the majority of their tier publications must be situated within the Ecology and Evolution domain. Furthermore, consideration was given to honors and awards specific to this field, emphasizing recognized achievement alongside bibliometric influence.
Notably, the D-index threshold is calibrated as an increment of 10 relative to the estimated total number of scholars per discipline. This ensures that the top 1% of leading scholars in each field are comprehensively represented. Additionally, the methodology requires that the proximity between a scientist’s general H-index and their D-index does not exceed 30%, thus maintaining disciplinary fidelity in the rankings.
Verification and Methodology Transparency
Recognizing that raw bibliometric data alone cannot fully capture a scholar’s research contributions, the team responsible for this ranking undertook extensive manual verification of all scientist profiles. These profiles were cross-correlated with publications listed across a wide spectrum of trustworthy academic sources to ensure accuracy and authenticity. While the number of publications in prominent journals and conference proceedings does not directly influence ranking positions, it serves as an important secondary indicator of a scientist’s influence and active engagement within their specialized field.
The final determination of rankings is anchored in each researcher’s D-index as derived from data obtained via OpenAlex and CrossRef—the most prominent and widely respected bibliometric databases accessible to the global research community. For a detailed account of the methodology employed, readers are invited to consult our methodology page.
Research.com’s Mission and Vision
Research.com is committed to fostering a transparent and informed global research ecosystem by providing accurate and meticulously curated rankings. Our mission is to inspire researchers, academic institutions, companies, and policymakers worldwide to monitor research trajectories of leading experts. Through these rankings, we aim to offer the scientific community clear insight into who the foremost authorities are within specific disciplines, countries, and institutions. This initiative ultimately facilitates collaboration, resource allocation, and strategic decision-making that can accelerate scientific progress across the globe.
