Structure of the deepest point in Earth’s hydrosphere revealed!

Nimrit Palan, Mumbai University

The Challenger Deep is the deepest known point in the Earth’s hydrosphere. The biosphere is made up of three main elements. Abiotic (physical and inorganic) components, biotic (organic) components and energy components are the three types. The Challenger Deep is located near the Mariana Islands group in the Western Pacific Ocean, at the southern end of the Mariana Trench. Mariana trench is one of the deadliest places on the planet and some unknown/undiscovered creatures still live there. A plastic bag, similar to those given free at grocery shops, has been discovered at a depth of 10,975 m below the Mariana Trench, according to a recent study.

DEPTH:

Direct measurements from deep-diving submersibles, remotely controlled underwater vehicles, and benthic landers, as well as sonar bathymetry, revealed a depth of 10,902 to 10,929 meters. It is deeper than the highest mountain.

HISTORY OF THE MARIANA TRENCH:

The Mariana Trench (a part of the hydrosphere), sometimes known as Everest, was discovered in 1951 by the British survey ship Challenger II. Since then, it’s been known as Challenger Deep, and it hasn’t been visited in nearly ten years. Jacques Piccard and Don Walsh descended in the Trieste, a submersible capable of withstanding nearly 16,000 pounds per square inch of pressure. A plastic bag, similar to the ones given out at grocery shops, has been discovered at a depth of 10,975 meters (36,000 feet) inside the Mariana Trench, according to a new study.

STRUCTURE OF THE BIOSPHERE:

The biosphere, along with the lithosphere (rock), hydrosphere (water), and atmosphere, is made up of all ecosystems and has four layers that surround the Earth (air). It’s a one-of-a-kind biosphere.

Buckminsterfullerene, nano-scale atom spheres that resemble the geodesic domes popularized by architect Richard Buckminster Fuller, is one of them. Buckminster Fuller used the term “tensegrity” to describe how these triangular pieces distribute stress throughout the structure, making the domes extremely sturdy for their size and weight.

A geodesic dome is a lattice-shell construction based on a geodesic polyhedron. It is a three-dimensional shape made up of a succession of triangles, which Buckminster Fuller patented in 1954.

SIGNIFICANCE/ROLE OF MICROBIAL EUKARYOTES IN THE CHALLENGER DEEP:

• Microbial eukaryotes have a variety of important ecological tasks and are important actors in the marine carbon cycle, thanks to their considerable morphological and genetic heterogeneity.
• Microbial eukaryotes that are phototrophic are substantial contributors to global primary productivity. Heterotrophic microbial eukaryotes consume smaller phytoplankton, bacteria, and archaea, and are themselves Larger microzooplankton eat on them, and they serve as key trophic linkages to higher trophic levels.
• Mixotrophic microbial eukaryotes may increase primary production and biomass transfer to higher trophic levels by combining photosynthesis and the eating of live prey.

Also read: How statins lower the death rate in COVID-19 patients

References:

1. Chen, P., Zhou, H., Huang, Y., Xie, Z., Zhang, M., Wei, Y., Li, J., Ma, Y., Luo, M., Ding, W., Cao, J., Jiang, T., Nan, P., Fang, J., & Li, X. (2021). Revealing the full biosphere structure and versatile metabolic functions in the deepest ocean sediment of the Challenger Deep. Genome Biology, 22(1), 207. https://doi.org/10.1186/s13059-021-02408-w

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