Data Sources and Citation Metrics
The 5th edition of the Research.com Best Plant Science and Agronomy Scientists in New Zealand Ranking is primarily based on comprehensive bibliometric data sourced from OpenAlex and CrossRef, complemented by multiple additional data repositories. The citation-based metrics that underpin the ranking were collected on January 12, 2026, ensuring that the analysis reflects up-to-date scholarly impact. A scientist’s position in this ranking is determined by their D-index (Discipline H-index), a refined metric that exclusively considers publications and citation data within the specific discipline of Plant Science and Agronomy. This ensures that evaluations are discipline-relevant and provide a focused measure of scholarly influence.
Scope of Research and Ranking Criteria
The ranking examines a broad dataset comprising 279,971 scientist profiles identified across various bibliometric sources spanning all disciplines, of which 68 scientists were specifically identified in the fields of Plant Science and Agronomy. To qualify for inclusion in this ranking, a researcher’s D-index must meet or exceed a threshold of 30, with a majority of their tier publications firmly situated within Plant Science and Agronomy. Additionally, notable awards and achievements within the discipline were factored into the assessment.
The threshold for the D-index is dynamically calibrated in increments of 10, corresponding to the estimated total population of scholars within a given discipline, while ensuring that the top 1% of leading experts are comprehensively included. Furthermore, to validate the discipline-specific impact, the D-index must not deviate from their general H-index by more than 30%, guaranteeing a robust alignment between overall scholarly output and specialization in Plant Science and Agronomy.
Verification and Methodology
Recognizing that raw bibliometric data alone cannot definitively evaluate scholarly productivity, the Research.com team undertook meticulous manual verification of all scientist profiles included in the ranking. Each profile was cross-checked against publications indexed in a range of trusted and authoritative sources, providing an additional layer of quality control and credibility.
While not directly influencing the ranking position, the number of papers published in prominent journals and conference proceedings is considered a valuable secondary indicator of a scientist’s sustained contribution to their specialized research area. The primary ranking metric remains the D-index, rigorously derived from data curated from OpenAlex and CrossRef — the leading and most trusted bibliometric databases accessible to the global research community.
For an in-depth explanation of the data gathering and ranking methodology employed, we encourage readers to visit our methodology page.
Research.com’s Mission and Vision
Research.com is committed to fostering greater transparency and recognition within the global scientific landscape. Our mission is to motivate researchers, academic institutions, corporations, and policymakers worldwide to gain insights into where leading experts are focusing their efforts. By providing a reliable, rigorously vetted resource that identifies the foremost scientists in specific disciplines, countries, and institutions, we aim to facilitate collaboration, strategic decision-making, and informed investments in scientific research. This ranking embodies our dedication to supporting the scientific community by highlighting excellence and encouraging continuous advancement in Plant Science and Agronomy across New Zealand.
