The cornerstone metric determining a scientist's position in this ranking is the D-index (Discipline H-index), which differs from the traditional H-index by focusing exclusively on publications and citation metrics within the examined discipline. This targeted approach ensures that the ranking accurately reflects a researcher’s impact and productivity in Environmental Sciences specifically, rather than their influence across unrelated fields.
Scope of Research and Ranking Criteria
The ranking process began with an extensive examination of 279,971 scientist profiles aggregated from a variety of bibliometric data sources covering all scientific disciplines. Within this wide dataset, 1,123 scientists specifically engaged in Environmental Sciences were identified and evaluated.
To qualify for inclusion in the ranking, a scientist was required to meet a minimum D-index threshold of 30. Additionally, the majority of their tier publications needed to be within the Environmental Sciences domain, ensuring relevance and focused expertise. Recognition of awards and achievements in Environmental Sciences also played a supplementary role in assessing researcher standing.
The D-index thresholds are dynamically set in increments of 10, calibrated according to the estimated total number of scholars in each discipline. This methodology guarantees that approximately the top 1% of leading experts in Environmental Sciences are incorporated within the ranking. Furthermore, candidates were subject to a proximity condition whereby the difference between their general H-index and discipline-specific D-index does not exceed 30%, ensuring that their impact in Environmental Sciences is a substantial portion of their overall research footprint.
Verification and Validation Practices
Understanding that raw bibliometric data cannot serve as an absolute evaluation tool for scholarly output, the Research.com team undertook meticulous manual verification of all scientist profiles included in the ranking. Each profile was cross-correlated with publication records sourced from a broad range of trustworthy academic and professional outlets to uphold data integrity and accuracy.
Though not a direct component affecting the D-index or ranking position, the volume of publications in prominent journals and respected conference proceedings was considered a valuable secondary signal of a scientist’s contribution and influence within Environmental Sciences. The ranking itself is formally established using the D-index metric as calculated from data obtained exclusively through OpenAlex and CrossRef—the two most prominent and widely respected bibliometric databases accessible to the global research community.
For detailed information on the methodology underpinning this ranking, readers are encouraged to visit our methodology page.
Research.com’s Mission and Vision Behind the Ranking
At Research.com, our mission is to inspire researchers, policymakers, and industry leaders worldwide to explore the trajectories of leading experts in various scientific domains. This ranking serves as a transparent and authoritative tool for the entire academic community to identify and connect with preeminent scientists in Environmental Sciences, whether within Croatia specifically, other countries, or individual research institutions.
Through this effort, we aim to foster collaboration, elevate recognition of scholarly excellence, and support informed decision-making that advances research and innovation across the globe.
