weight composition

https://doi.org/10.1351/goldbook.15132
Distribution of organisms among the various weight classes present in a population.
Note: The sum of individual weights over all weight classes equals the population biomass.
Source:
PAC, 2009, 81, 829. (Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)) on page 963 [Terms] [Paper]