Effects of ocean acidification combined with multiple stressors on early life stages of the pacific purple sea urchin
MetadataShow full item record
SubjectFertilization; Larval Development; Multiple Stressors; Ocean Acidification; Purple Urchin; Temperature
Decreases in ocean pH through ocean acidification has shown to have direct negative impacts on the early life stages of the Pacific purple sea urchin, Strongylocentrotus purpuratus. Research has suggested that multiple stressors could exacerbate, cancel, or even alleviate the impacts of ocean acidification on echinoderms. This study assessed the combined effects of changes in pCO2 concentrations (390, 800, 1500 ppm), salinities (28, 31, 34 ppt) and temperatures (12, 15, 18°C) on fertilization and larval development in S. purpuratus. Increased pCO2 was the predominant stressor, with additive and antagonistic effects from temperature changes, and no effect from salinity changes. Stressor combinations significantly decreased the rate of normal larval development by 28 – 68%, whereas fertilization and larval survival were unaffected. The strong impact on normal larval development likely indicates that later development stages could be detrimentally affected and could influence the population dynamics of S. purpuratus.
Showing items related by title, author, creator and subject.
Haycroft, Carly (2015-01-08)Ocean acidification is changing the chemistry of the ocean and has the potential to result in large-scale ecosystem changes. Observations of dissolved shells and low survivorship rates of juvenile bivalves are a concern ...
Corporate strategy and corporate environmental responsibility in Canada : multiple descriptive case studies Dixon, Peter Robert (2011-04-21)In recent years we have witnessed growing interest in corporate environmental responsibility and the concept of sustainability amongst businesses globally. Regardless of the motivation, be it competitive advantage, social ...
Contributing factors to gender disparity in upper-administrative levels of public secondary school: a multiple-case study in an urban area in China Liang, Yan (Electronic version published by Vancouver Island University, 2019)While the advocacy of gender equality is growing and women are continuously showing up in leadership positions, women are underrepresented and underutilized as leaders in educational leadership, especially in upper-administrative ...