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dc.contributor.advisorKohfeld, Karen
dc.contributor.advisorDallimore, Audrey
dc.contributor.advisorLing, Chris
dc.contributor.authorStavroff, Leslie-Anne
dc.date.accessioned2014-05-07T22:26:28Z
dc.date.available2014-05-07T22:26:28Z
dc.date.issued2014-05-07
dc.date.submitted2014
dc.identifier.urihttp://hdl.handle.net/10170/702
dc.description.abstractDecreases 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.en_US
dc.subjectFertilizationen_US
dc.subjectLarval Developmenten_US
dc.subjectMultiple Stressorsen_US
dc.subjectOcean Acidificationen_US
dc.subjectPurple Urchinen_US
dc.subjectTemperatureen_US
dc.titleEffects of ocean acidification combined with multiple stressors on early life stages of the pacific purple sea urchinen_US
dc.degree.nameM.Sc. in Environment and Managementen_US
dc.degree.levelMastersen_US
dc.degree.disciplineSchool of Environment and Sustainabilityen_US


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