Jelly Fish

Words: 561
Pages: 3

Jellyfish blooms result in a major microbial respiratory sink of carbon in marine system.

Some of the key questions this study addressed were: 1.What microbes need in order to grow and the types of things that can limit their growth. 2. What conditions can cause the change in temporal shifts and spatial increase in jellyfish. 3. How Jellyfish predation affects food web by converting large quantities of carbon (sometimes Nitrogen and Phosphorous) to gelatinous biomass. 4. How the blooms of jellyfish can affect C biogeochemistry at ecosystem level. Lastly, the impact of the release of Jelly-DOM on microbial nutrient in marine environment. Many approaches were used in this study and listed below are some of them.
Two different species of jellyfish
…show more content…
A regrowth experiment was conducted in the dark at 25 degrees ℃ to analyze how prokaryotes phylotypes would react to the substance jelly-DOM .The bacterial growth efficiency was measured by dividing the bacterial production (BP) over the Bacterial carbon demand (BCD). The BGE is the ratio of how much carbon is retained and will be taken up by bacterial biomass.
At the end of the experiment, they results were as follow:
The living bacteria consumed large portion of the Jelly-DOM substance and this helped the metabolism of the bacterium. This led to the conclusion that, the presence of jelly-DOM has a huge impact on microbial carbon consumption, which increases the bacterial respiration and production. After the experiment, a release of Jelly-DOM, DOC, DON and inorganic nutrients from both species were produced. Mnemiopsis leidyi ctenophores species had more C-rich Jelly-DOM present. Jellyfish release colloidal and dissolve other organic matter. For the regrowth experiment, there was a high growth in the proteobacteria cell when the bacteria was exposed to the