Organic Matter Continuum in a Compost System: Life and Death in a Compost Microbiome Decide Whether Compost Is...

Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...

DecomposersDecomposers, such as fungi, bacteria, and some invertebrates, are organisms that break down dead organic matter and waste. By doing so, they release nutrients back into the soil, water, and air, making them available for producers. Decomposers are essential for nutrient recycling, soil fertility, and the overall health of ecosystems. Without them, ecosystems would accumulate waste and lose access to vital resources needed to sustain life.Science and Engineering Practices (SEP):...

Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.

Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components:

ProducersProducers, also known as autotrophs, are organisms that generate their own food through photosynthesis or chemosynthesis. They form the foundation of the food web by converting energy from the sun or chemical sources into organic matter, which consumers then use. Producers include plants, algae, and certain bacteria. They play a critical role in ecosystems by supporting food chains, maintaining oxygen levels, and contributing to nutrient cycles.Science and Engineering Practices (SEP):...

Microorganisms play a crucial role in agriculture and the food industry, contributing to soil fertility, crop protection, and food production. Their functions range from nitrogen fixation and biopesticide production to fermentation and food preservation, making them indispensable to sustainable farming and food safety.Role in AgricultureNitrogen-fixing bacteria, such as Rhizobium (symbiotic) and Azotobacter (free-living), convert atmospheric nitrogen into ammonia through biological nitrogen...