Genetic erosion reduces biomass temporal stability in wild fish populations.

ABSTRACT: Genetic diversity sustains species adaptation. However, it may also support key ecosystems functions and services, for example biomass production, that can be altered by the worldwide loss of genetic diversity. Despite extensive experimental evidence, there have been few attempts to empirically test whether genetic diversity actually promotes biomass and biomass stability in wild populations. Here, using long-term demographic wild fish data from two large river basins in southwestern France, we demonstrate through causal modeling analyses that populations with high genetic diversity do not reach higher biomasses than populations with low genetic diversity. Nonetheless, populations with high genetic diversity have much more stable biomasses over recent decades than populations having suffer

SUBMITTER: Prunier JG 

PROVIDER: S-EPMC10359329 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature