In ecology, decomposers are heterotrophic organisms—primarily bacteria and fungi—that chemically break down dead organic matter, waste products, and detritus into simpler inorganic compounds. They secrete extracellular enzymes that hydrolyze complex polymers such as cellulose, lignin, chitin, proteins, and lipids into soluble molecules that can be assimilated and further mineralized to CO₂, NH₄⁺, PO₄³⁻, and other nutrients. Decomposers thus mediate key biogeochemical cycles (carbon, nitrogen, phosphorus, sulfur), regulate soil organic matter dynamics, influence ecosystem respiration, and determine nutrient availability for primary producers, strongly affecting ecosystem productivity, stability, and succession patterns.
When snow blankets the landscape, it may seem like life slows down. But beneath the surface, an entire world of activity is unfolding.
Earth Sciences
Feb 3, 2026
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34
Fungi are the hidden architects of our ecosystems, acting as everything from helpful partners for plants to aggressive decomposers that recycle dead wood. However, many fungi don't stick to just one job; they can switch lifestyles ...
Molecular & Computational biology
Jan 28, 2026
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19
Look down at the rainforest floor. Rotting flowers shift under the assault of tiny petal-eating beetles. Vividly colored fungi pop up everywhere like the strange sculptures of a madly productive ceramicist.
Plants & Animals
Jan 20, 2026
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55
Globally, soils contain three times as much carbon as exists in the atmosphere and all plants, combined. Which means that understanding how soil microbes recycle organic materials—sometimes sending CO2 back into the atmosphere, ...
Environment
Dec 17, 2025
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89
Earthworms don't stop shaping soil processes when they die. A new study shows they can still help store carbon in the soil, even after death. "This is quite surprising," says lead author Tullia Calogiuri. "Most of our knowledge ...
Earth Sciences
Nov 3, 2025
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33
When 115,000 tons of food waste hit Surrey's processing facility each year, an invisible army goes to work—billions of microbes convert everything from banana peels to leftover pizza into renewable natural gas (RNG). Now, ...
Cell & Microbiology
Oct 23, 2025
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124
University of Minnesota researchers studied the microbial degradation of the USS Cairo, one of the first ironclad and steam-powered gunboats used in the United States Civil War. Studies of microbial degradation of historic ...
Ecology
Oct 22, 2025
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801
Farmers handle a wide range of responsibilities to keep operations running—and a routine but often overlooked duty is safely disposing of dead livestock. Left unattended, carcasses can spread disease and jeopardize entire ...
Plants & Animals
Oct 21, 2025
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19
From pollinating flowers to enabling decomposition and supporting nutrient cycles, insects' abundance and biodiversity are critical for maintaining healthy ecosystems. However, recent studies showing population declines have ...
Plants & Animals
Sep 11, 2025
2
563
For years, scientists have marveled at bacteria's ability to digest the seemingly indigestible, including carbon from lignin, the tough, woody material that gives plants their rigidity.
Cell & Microbiology
Sep 2, 2025
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151
