Projected marine climate changes: effects on copepod oxidative status and reproduction
(English)Manuscript (preprint) (Other academic)
Because of their important role between primary producers and fish, it is crucial to address zooplankton responses when predicting effects of climate change on pelagic ecosystems. For realistic community-level predictions, several biotic and abiotic climate-related variables should be examined in combination. We studied the combined effects of ocean acidification and global warming predicted for year 2100 with toxic cyanobacteria on a calanoid copepod, Acartia bifilosa. Together, acidification and temperature increase reduced copepod antioxidant capacity. Egg viability, nauplii development and oxidative status also decreased at above-ambient temperature. Exposure to cyanobacteria and its toxin had a negative effect on egg production but, surprisingly, a positive effect on oxidative status and egg viability. This resulted in no net effects on viable egg production. Additionally, nauplii development was enhanced by presence of cyanobacteria, which partially alleviated the otherwise negative effects of forecasted climate change on the copepod population.
Research subject Marine Ecology
IdentifiersURN: urn:nbn:se:su:diva-81677OAI: oai:DiVA.org:su-81677DiVA: diva2:563476