Brian Hopkinson, has two interconnected parts. Coral reefs contain the most diverse ecosystems on the planet, in addition to protecting coastlines from the damaging effects of wave action and tropical storms. Anna Tansik, a doctoral candidate in Marine Sciences, studies corals and the effect that ocean acidification has on their physiology.
Referred to as ocean acidification, this has the potential to alter the physiology of many organisms, including corals. Anna Tansik, a doctoral candidate in Marine Sciences, studies corals and the effect that ocean acidification has on their physiology. Although CO 2 can be sourced from host respiration of heterotrophic substrates, in many species the abundant ATP derived from photosynthesis is sufficient to sustain a positive feedback on the activity of carbonic anhydrase, which converts seawater bicarbonate into intra- cellular CO 2. Prior to the Industrial Revolution, these ratios were essentially balanced; however, as humans produce CO2 in increasing quantities, more atmospheric CO2 is available to dissolve into the ocean. Tansik is also working on a model of carbon flow through the coral. Using methods that have been used for decades for phytoplankton, Tansik was able to determine coral enzyme activity rates, carbon uptake, and what the carbon environment is for the corals and their symbionts. After graduation, Tansik plans to remain in an academic setting as a postdoctoral researcher or a lecturer and hopes to become a faculty member one day. Provided that symbiont growth is limited by lack of nutrients, cell division is minimized and hosts can accumulate translocated photosynthates as energy reserves to maintain symbiotic homeostasis. Using the quantitative data collected from her experimental research, the model can be used to evaluate different hypotheses regarding ocean acidification. Show more Citations This rise in ocean CO2 levels in turn causes a decrease in pH levels, especially at the surface. Prochlorococcus CCM components in the Global Ocean Survey metagenomes were very similar to those in the genomes of cultivated strains, indicating that the CCM in environmental populations is similar to that of cultured representatives. Additionally, coral reefs have been estimated to contribute hundreds of billions of dollars to worldwide economies. A mechanistic, numerical model with a structure based on the CCM components present in the genome is able to match data on photosynthesis, CO2 efflux, and the intracellular inorganic carbon pool. No differences in CCM physiology or gene expression were observed when Prochlorococcus was fully acclimated to high ppm or low ppm CO2 conditions. Brian Hopkinson, has two interconnected parts. The genomes of Prochlorococcus spp. Coral reefs contain the most diverse ecosystems on the planet, in addition to protecting coastlines from the damaging effects of wave action and tropical storms. The diversity of active carbon concentrating mechanisms found in corals highlights the importance of this feedback .
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