Title: population growth rate Long Title: IUPAC Gold Book - population growth rate DOI: 10.1351/goldbook.14939 Status: current Definition Change in population size \(\Delta N\) during a specified time period \(\Delta t\) \[\Delta N/\Delta t = (b - d)N\] where \(N\) is population size, \(b\) is per capita birth rate, and \(d\) is per capita death rate. Related Terms - per capita birth rate: https://goldbook.iupac.org//terms/view/14904 - per capita death rate: https://goldbook.iupac.org//terms/view/14905 - per capita rate of increase: https://goldbook.iupac.org//terms/view/14906 - population: https://goldbook.iupac.org//terms/view/14932 Source - PAC, 2009, 81, 829. 'Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)' on page 930 (https://doi.org/10.1351/PAC-REC-08-07-09) Other Outputs - html: https://goldbook.iupac.org/terms/view/14939/html - json: https://goldbook.iupac.org/terms/view/14939/json - xml: https://goldbook.iupac.org/terms/view/14939/xml Citation: Citation: 'population growth rate' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.14939 License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. Accessed: 2026-04-21T08:10:43+00:00