FABS 210 Lecture 14: FABS lecture #14
16 Jan 2018
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Document Summary
Bacterial species, tend to dominate in surface waters. Bacteria and archaea near equal in deeper waters. Visible light penetrates no further than about 200- 300 m, which delimitates the oceans upper or phobic-zone. This factor creates a unique habitat suitable for: prokaryotic and eukaryotic autotrophs. Blue light is deeper in the system then green light. The number of archea predominate in lower waters due to changing environmental conditions toward the extremes. Oligotroph- an organisms that grows best at very low nutrient concentrations. Proterorhodospin - a form of rhodopsin that allows cells to use light energy to drive atp synthesis. Viruses are the most abundant micro-organisms in the oceans. Viruses affect prokaryotic populations and are highly diverse. Bacteriophage affects the number of bacteria that are growing. The viruses are present because of the very high number of autotrophic bacteria. It is a hostile environment where the viruses can survive.
