Chris Chambers, NOAA Northeast Fisheries Science Center
The primary goal of our OA projects (NEFSC Howard Laboratory) is to understand the impacts of increased CO2 and acidity of ocean and estuarine waters on important finfish species of our region. Our tactical objectives during FY12-14 were to develop, test, and then implement an experimental system that allows for the estimation of impacts of high CO2 and associated increased acidity of marine waters on the ELS of economically and ecologically important finfish species important to the NE USA. In FY15-17 we are building upon investments in research capacity and knowledge, and our experiments are addressing higher order questions that fold very well into one of the goals of the Interagency Working Group on OA – undertaking research to examine species-specific and multi-species physiological responses including behavioral and evolutionary adaptive capacities. We have four higher level objectives for our FY15-17 studies.
First, we are testing our hypothesis that the resilience of the individuals in a population is inversely related to the variability of the CO2 in the habitat the population occupies (see also, Murray et al. 2014). This evaluation is being done by conducting comparative experiments among winter flounder from separate and distinct source populations whose resident habitats differ in characteristic levels and stability in CO2. Second, we are evaluating the role of parental exposure in the resilience / susceptibility of offspring to elevated CO2 (Sunday et al. 2014, Malvezzi et al. 2015). For these transgenerational studies, we are using three different forage species (original intent was to use Atlantic cod broodstock housed at the University of Maine but logistics and staffing decisions there precluded our use of those fish). Third, we are expanding our synthesis and meta-analysis of biological effects of CO2 on finfish. Lastly, we continue our education and outreach efforts on OA themes by mentoring students, conducting surveys, and providing tours of our OA experimental facilities.