A matter of salt: Global assessment of the effect of salt ionic composition as a driver of aquatic bacterial diversity

Sammanfattning

While the influence of salinity on microbial diversity is well documented in marine and brackish ecosystems, the impact of different dissolved inorganic ion types remains largely unexplored. In this study, we assessed how ionic composition shapes planktonic bacterial community structure in inland saline aquatic habitats, compared to the effects of salinity alone, spatial factors, and other environmental variables. We collected and analyzed 16S rRNA gene amplicon datasets from freshwater to hypersaline aquatic environments worldwide (375 samples from 130 lakes). The composition of major ions explained more variability in bacterioplankton structure than bulk salinity. Taxa contributing the most to the observed dissimilarity between communities included lineages characteristic of specific habitat types, such as Actinobacteria acI in freshwater, Halomonadaceae in saline waters, or Nitriliruptorales in soda- and soda-saline systems. Many of these indicator lineages for specific habitat types were monophyletic, further underpinning ionic composition as a crucial eco-evolutionary driver of aquatic microbial diversity.

Publicerad i

Limnology and Oceanography Letters
2025, volym: 11, nummer: 1, artikelnummer: e70088
Utgivare: WILEY

SLU författare

• Szabò, Attila

  • Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
    
  • Ökológiai Kutatóközpont

• Székely, Anna

  • Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
    

• Bertilsson, Stefan

  • Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Oceanografi, hydrologi, vattenresurser
Mikrobiologi

Publikationens identifierare

• DOI: https://doi.org/10.1002/lol2.70088

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/145628