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[1] [2] [3] Phytoplankton obtain their energy through photosynthesis, as trees and other plants do on land. This means phytoplankton must have light from the sun, so they live in the well-lit surface layers (euphotic zone) of oceans and lakes. In comparison with terrestrial plants, phytoplankton are distributed over a larger surface area, are ...
Around 70% of the oxygen in the atmosphere is produced in the oceans from phytoplankton performing photosynthesis, meaning that the majority of the oxygen available for us and other organisms that respire aerobically is produced by plankton. [71] Plankton also make up the base of the marine food web, providing food for all the trophic levels above.
Green indicates where there are a lot of phytoplankton, while blue indicates where there are few phytoplankton. – NASA Earth Observatory 2019. [1] Marine primary production is the chemical synthesis in the ocean of organic compounds from atmospheric or dissolved carbon dioxide.
Some larger jellyfish are considered planktonic. Plankton are the building blocks of life in the sea. Everything depends on them. Phytoplankton are microscopic plants that can be as small as one cell.
It is the part of the oceanic carbon cycle responsible for the cycling of organic matter formed mainly by phytoplankton during photosynthesis (soft-tissue pump), as well as the cycling of calcium carbonate (CaCO 3) formed into shells by certain organisms such as plankton and mollusks (carbonate pump). [76]
The PI (or photosynthesis-irradiance) curve is a graphical representation of the empirical relationship between solar irradiance and photosynthesis. A derivation of the Michaelis–Menten curve, it shows the generally positive correlation between light intensity and photosynthetic rate. It is a plot of photosynthetic rate as a function of light ...
The marine carbon cycle. Carbon dioxide is taken up by phytoplankton for photosynthesis and incorporated into the marine food web. When plankton or predator dies, sedimentation of organic matter reaches the seafloor, where carbon can be buried and sequestered.
Phytoplankton; Zooplankton; However, there is a simpler scheme that categorizes plankton based on a logarithmic size scale: Macroplankton (200–2000 μm) Micro-plankton (20–200 μm) Nanoplankton (2–20 μm) This was even further expanded to include picoplankton (0.2–2 μm) and fem-toplankton (0.02–0.2 μm), as well as net plankton ...
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