Symbiodinium cells under microscope (IMAGE) Penn State Caption An international team of researchers found that iron limitation, through its effects on growth and trace metal usage of the microalgae that live within coral cells, could exacerbate the effects of climate change on corals. Credit Todd LaJeunesse, Penn State Usage Restrictions Credit must be provided alongside image. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.