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The food paradox answer shows how marine life survives

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Sea predators cannot survive at the average concentration of food found in the water. Instead, they survive by taking advantage of small patches in food-rich areas scattered in waterways around the world.


During the 181st American Acoustical Society meeting, which will be held from November 29th to December. 3. Kelly Benoit-Bird of the Monterey Bay Aquarium Institute will explain how to use sonar or active acoustics to interpret and display biological hotspots in marine life. The talk “Sound Solutions to the Seafood Paradox” will take place on Wednesday, December 1st at Hyatt Regency Seattle.

Using active acoustics, where acoustic pulses are generated and the resulting echoes are interpreted, researchers have discovered that the ocean is widely occupied by narrow hotspots of activity. Traditionally, these hotspots were overlooked by traditional sampling tools, but identifying them can provide a dynamic, layered map of marine life.

“We use a system very similar to that used to find the depth of the ocean, but instead of interpreting echoes from the ocean floor, we are more sensitive to mapping layers of life in the water. I’m using the system, “says Benoit-. bird. “We have found that animals of all sizes, from millimeter-length plankton to large predators, are unevenly distributed. This variation is how life in the ocean works. It ’s very important to you. ”

Survey results mean the sea food The speckled biota varies in depth and location, suggesting that animals must find and utilize small aggregates of resources.

In the Lasker diet paradox proposed in the 1970s, laboratory animals fed average concentrations of marine diet did not survive, while wild marine animals survived. The paradox is adjusted by Benoit-Bird findings to help animals not survive at average food concentrations, but adapt well to finding and utilizing resource patches and reducing total energy consumption for hunting. Is shown.

“For example, if popcorn, the equivalent of a bucket, is evenly distributed throughout the volume of a room and you have to fly around to capture each kernel, spending a lot of energy searching and getting enough. It’s difficult. It’s full. ” “Instead, if all the popcorn is grouped together, the popcorn will be a much more satisfying snack. The amount of popcorn is the same, but changing the grouping method will make you full. Is decided.

“Sound tools High spatial resolution Long-term sampling to investigate processes that promote biological interactions in the ocean.You have to understand not just how many animal Is in OceanBut how are they distributed in order to effectively manage the marine resources we live in? ”


The timing of translation reveals the importance of predator pressure in the twilight zone of the sea.


For more information:
Acoustic Arsociity.org / asa-meetings /

Quote: The Food Paradox answer shows how marine life survives (December 1, 2021). Obtained December 1, 2021 from https: //phys.org/news/2021-12-food-paradox-ocean-life-survives.html

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The food paradox answer shows how marine life survives

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