Widespread reductions in body size are paired with stable assemblage biomass

Inês S. Martins*, Franziska Schrodt, Shane A. Blowes, Amanda E. Bates, Anne D. Bjorkman, Viviana Brambilla, Juan Carvajal-Quintero, Cher F. Y. Chow, Gergana N. Daskalova, Kyle Edwards, Nico Eisenhauer, Richard Field, Ada Fontrodona-Eslava, Jonathan J. Henn, Roel van Klink, Joshua S. Madin, Anne E. Magurran, Michael McWilliam, Faye Moyes, Brittany PughAlban Sagouis, Isaac Trindade-Santos, Brian McGill, Jonathan M. Chase, Maria Dornelas

*Corresponding author for this work

Research output: Working paperPreprint

Abstract

Biotic responses to global change include directional shifts in organismal traits. Body size, an integrative trait that determines demographic rates and ecosystem functions, is often thought to be shrinking in the Anthropocene. Here, we assess the prevalence of body size change in six taxon groups across 5,032 assemblage time-series spanning 1960-2020. Using the Price equation to partition this change into within-species body size versus compositional changes, we detect prevailing decreases in body size through time. Change in assemblage composition contributes more to body size changes than within-species trends, but both components show substantial variation in magnitude and direction. The biomass of assemblages remains remarkably stable as decreases in body size trade-off with increases in abundance.
Original languageEnglish
PublisherbioRxiv
Number of pages18
DOIs
Publication statusPublished - 3 Feb 2023

Fingerprint

Dive into the research topics of 'Widespread reductions in body size are paired with stable assemblage biomass'. Together they form a unique fingerprint.
  • Widespread shifts in body size within populations and assemblages

    Martins, I. S., Schrodt, F., Blowes, S. A., Bates, A. E., Bjorkman, A. D., Brambilla, V., Carvajal-Quintero, J., Chow, C. F. Y., Daskalova, G. N., Edwards, K., Eisenhauer, N., Field, R., Fontrodona-Eslava, A., Henn, J. J., van Klink, R., Madin, J. S., Magurran, A. E., McWilliam, M., Moyes, F. & Pugh, B. & 5 others, Sagouis, A., Trindade-Santos, I., McGill, B. J., Chase, J. M. & Dornelas, M., 8 Sept 2023, In: Science. 381, 6662, p. 1067-1071 5 p.

    Research output: Contribution to journalArticlepeer-review

Cite this