Biological consequences of weak acidification caused by elevated carbon dioxide in freshwater ecosystems

Caleb T. Hasler, Jennifer D. Jeffrey, Eric V.C. Schneider, Kelly D. Hannan, John A. Tix, Cory David Suski

Research output: Contribution to journalReview article

Abstract

Weak acidification can occur in freshwater ecosystems when free carbon dioxide (CO2) levels increase, which can happen for a variety of reasons. To define the state of knowledge for how weak acidification influences freshwater biota and ecosystems, a review of the primary literature was conducted. Despite few empirical studies focused on weak acidification in the primary literature (~100 studies), some themes have emerged from our literature review. Most studies focused on physiological responses at the organismal level, and fish were the most studied taxa. Animals exhibited reduced individual growth rates, and, in contrast, primary producers demonstrated increased individual and population growth rates. In animals, mortality, sub-lethal injuries, and changes to behaviours were also observed. Negative consequences to reproduction in macrophytes were found. Few studies have focused on population, community, or ecosystem levels, though broad scale studies suggest that weak acidification can limit species community diversity, specifically in invertebrates and fish. Moving forward, researchers need to continue to advance our understanding of the consequences of weak acidification for freshwater biota. Furthermore, priority should be placed on research that can evaluate the potential for weak acidification in freshwater to lead to changes in ecological regimes or economical outcomes, such as fisheries collapses.

Original languageEnglish (US)
JournalHydrobiologia
Volume806
Issue number1
DOIs
StatePublished - Jan 1 2018

Fingerprint

freshwater ecosystem
acidification
carbon dioxide
biota
ecosystems
ecosystem
animal
organisms
physiological response
fish
literature review
macrophytes
freshwater ecosystems
population growth
animals
researchers
invertebrate
invertebrates
fishery
fisheries

Keywords

  • Carbonic acid
  • Ecology
  • Freshwater biota
  • Organismal response

ASJC Scopus subject areas

  • Aquatic Science

Cite this

Biological consequences of weak acidification caused by elevated carbon dioxide in freshwater ecosystems. / Hasler, Caleb T.; Jeffrey, Jennifer D.; Schneider, Eric V.C.; Hannan, Kelly D.; Tix, John A.; Suski, Cory David.

In: Hydrobiologia, Vol. 806, No. 1, 01.01.2018.

Research output: Contribution to journalReview article

Hasler, Caleb T. ; Jeffrey, Jennifer D. ; Schneider, Eric V.C. ; Hannan, Kelly D. ; Tix, John A. ; Suski, Cory David. / Biological consequences of weak acidification caused by elevated carbon dioxide in freshwater ecosystems. In: Hydrobiologia. 2018 ; Vol. 806, No. 1.
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