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Yesterday I measured Secchi disk transparency and compared that with simultaneous photometer measurements in a subtropical estuary. The lower border of the photic zone (1% of surface irradiance) according to my YSI photometer was at a depth of 4.7 m , while Secchi reading was at 1.6 m. Multiplying 1.6 by 2 gives 3.2, which is significantly lower than 4.7 m. Before that observation I believed in the "double-Secchi rule".
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JordanNo, the photic zone refers to the depth of water where sufficient light penetrates for photosynthesis to occur. Secchi depth, on the other hand, is the depth at which a Secchi disk is no longer visible from the surface. While the two depths can be related in certain circumstances, they are not inherently equal or directly comparable.
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How deep is the oceans photic zone?
The photic zone in the ocean typically extends to around 200 meters (656 feet) deep, but this can vary depending on factors such as water clarity and location. Below the photic zone, light levels decrease significantly, making it difficult for photosynthesis to occur.
What are facts about the Photic Zone?
The photic zone is the uppermost layer of the ocean where sunlight can penetrate, allowing photosynthesis to occur. It is home to a wide variety of marine life, from plankton to fish and even some larger mammals like whales. The depth of the photic zone can vary depending on the clarity of the water, but it typically extends down to around 200 meters.
What are 2 natural resources in the photic zone?
Two natural resources found in the photic zone are sunlight and nutrients. Sunlight is essential for photosynthesis, which provides energy for many organisms in this zone. Nutrients such as nitrogen and phosphorus are vital for the growth and productivity of plants and algae in the photic zone.
Do any abyssal zone animals go to the photic zone?
yes
What plants and animals live in the photic zone?
Euphotic zonethe zone of water that is penetrated by sunlight, Phytoplackton make up its primary inhabitantshttp://content.answers.com/main/content/wp/en-commons/thumb/2/23/150px-Phytoplankton_SoAtlantic_20060215.jpgthis is a picture of a plankton bloom
