All citation-based metrics that underpin this ranking were collected on January 12, 2026, ensuring the timeliness and relevance of the data. Each scientist’s position within the ranking is determined by their D-index (Discipline H-index), a refined metric that exclusively considers publications and citations pertinent to the specific discipline of Environmental Sciences. This discipline-specific approach allows for a more focused and precise evaluation of scholarly influence within the field.
Scope of Research and Selection Criteria
The ranking is derived from an extensive examination of 279,971 scientist profiles identified through various bibliometric data sources across all disciplines, with a focused evaluation of 67 scientists specifically active in Environmental Sciences. To qualify for inclusion in this ranking, a scientist must have a D-index of at least 30, and a majority of their tier publications must be centered in Environmental Sciences. Alongside bibliometric performance, consideration is also given to the scientists’ awards and notable achievements within the discipline.
To balance rigor with inclusiveness, the threshold for the D-index is dynamically adjusted in increments of 10 depending on the estimated number of scholars in each discipline. This methodical threshold setting ensures the inclusion of approximately the top 1% of leading scholars. Additionally, candidates are required to exhibit a proximity of 30% or less between their general H-index and their D-index, reflecting a strong, discipline-focused research profile.
Verification and Validation Practices
Recognizing the inherent limitations of raw bibliometric data, the research team carefully and manually verified all scientist profiles. This verification process included cross-correlation against publications indexed in a broad array of trusted sources, ensuring robust data integrity and reliability.
While the number of papers published in prominent journals and conference proceedings does not directly influence ranking positions, it is acknowledged as a valuable secondary indicator of a scientist’s contributions and visibility in the Environmental Sciences community. The final rankings are established using each researcher’s D-index, which is calculated based on data gathered from OpenAlex and CrossRef—the most prominent and widely trusted bibliometric databases available.
For a comprehensive understanding of the ranking methodology, readers are encouraged to visit our methodology page.
Research.com’s Mission and Vision
At Research.com, our mission is to inspire and equip researchers, corporations, and policymakers worldwide with clear insights into the trajectories of leading scientific experts. By transparently identifying who the foremost authorities are in specific disciplines, countries, or institutions, we aim to foster greater connectivity and informed decision-making within the global scientific community.
This ranking embodies our commitment to meticulous scholarship and transparency, offering an invaluable resource for recognizing and understanding leadership in Environmental Sciences in Brazil. We trust that it will serve as a catalyst for collaboration, innovation, and strategic investment in research and development across academia and beyond.
