Data Sources and Methodology
The 5th edition of the Research.com Best Ecology and Evolution Universities in the World Ranking has been meticulously crafted using a wide array of bibliometric data sources, primarily OpenAlex and CrossRef, alongside multiple other reputable databases. For the purposes of this ranking, citation-based metrics were derived from bibliometric data collected on January 12, 2026. The key metric employed in compiling this ranking is the D-index (Discipline H-index), which is calculated exclusively for the discipline of Ecology and Evolution. Each institution's position in the ranking reflects the summation of D-indexes of all affiliated scholars whose primary publication area falls within Ecology and Evolution. Notably, the D-index isolates publications and citations pertinent solely to the examined discipline, thereby ensuring a focused and accurate assessment of scholarly impact within this specialized field.
Scope of Research and Scholar Inclusion Criteria
A comprehensive analysis was undertaken involving 279,971 scientist profiles identified across a variety of trusted bibliometric sources. Out of these, specifically 29,783 scientists specializing in Ecology and Evolution were rigorously analyzed. To qualify for inclusion, a scholar needed to meet a minimum D-index threshold of 30 within the Ecology and Evolution discipline, with the majority of their tier publications concentrated in this area. Recognition of a researcher’s awards and professional achievements within Ecology and Evolution further reinforced their inclusion.
The D-index threshold for defining top-tier researchers is dynamically set in increments of 10, corresponding to the estimated total number of scholars in each discipline. This calibrated approach ensures the inclusion of the top 1% of leading scientists per discipline. Additionally, to guarantee appropriate disciplinary focus, a scientist’s general H-index and D-index must not differ by more than 30%. This safeguards the ranking’s integrity by emphasizing experts whose influence is directly tied to Ecology and Evolution. Furthermore, awards and distinguished achievements serve as qualitative augmentations to the quantitative benchmarks employed.
Verification and Data Validation Practices
The Research.com team acknowledges the inherent limitations of raw bibliometric data as sole evaluative tools of scholarly output. Therefore, every scientist profile enlisted in the ranking underwent manual verification, with extensive cross-correlation against publications documented in a broad range of trustworthy academic sources. While the number of publications in prominent journals and conference proceedings is not a formal factor affecting ranking positions, it functions as a valuable secondary indicator of a researcher’s contribution to the field.
The ranking itself is firmly grounded in each researcher’s H-index, as compiled through authoritative bibliometric platforms OpenAlex and CrossRef — recognized by the global research community as the premier sources for academic citation data. For full transparency and deeper insight into the rigorous methodology of this ranking, we invite you to visit our methodology page.
Research.com’s Mission and Vision
Our mission at Research.com is to inspire and empower scientists, business leaders, and policymakers worldwide by providing clear, data-driven insights into where top experts are advancing the frontiers of knowledge. We aim to foster an environment where the entire research ecosystem can easily identify leading experts within specific disciplines, across various national contexts, or within individual academic institutions. The creation of this comprehensive and rigorously verified ranking reflects our commitment to enhancing transparency and facilitating informed collaboration and decision-making in the science community.
Key Results of the Ranking
- Top 3 Institutions by Number of Leading Scientists:
- University of California, Davis – 66 scientists
- Swedish University of Agricultural Sciences – 59 scientists
- University of British Columbia – 57 scientists
- Most Prominent Scholars in Ecology and Evolution Representing:
- University of Florida
- Imperial College London
- Arizona State University
- University of Copenhagen
- University of Basel
- University of Oslo
- University of Konstanz
- University of California, Los Angeles
- Stanford University
- University of Montana
- Top Ranked Scientists Worldwide:
- 1st: Professor Josep Peñuelas (Centre for Ecological Research and Forestry Applications (CREAF), CSIC) – D-index of 188
- 2nd: Douglas E. Soltis (University of Florida) – D-index of 167
- 3rd: Iain Colin Prentice (Imperial College London) – D-index of 162
- Average Metrics Comparison:
- Average total D-index for the top 5% of universities: 2,370 vs. 387 for all 876 institutions in the ranking
- Average number of published articles in Ecology and Evolution by top 5% scholars: 7,261 vs. 1,259 for all universities
- Average number of citations for researchers affiliated with top 1% universities: 1,064,679 vs. 107,943 for all ranked institutions
