Organic Matter
Organic Matter - Related Videos
13:29
Production and Measurement of Organic Particulate Matter in a Flow Tube Reactor
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Cited by 5 •
2018
This paper describes the operation procedure for the flow tube reactor and related data collection. It shows the protocols for setting the experiments, recording data and generating the number-diameter distribution as well as the particle mass information, which gives useful information about chemical and physical properties of the organic aerosols.
09:46
Production and Measurement of Organic Particulate Matter in the Harvard Environmental Chamber
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Cited by 4 •
2018
This paper describes operation procedures for the Harvard Environmental Chamber (HEC) and related instrumentation for measuring gaseous and particle species. The environmental chamber is used to produce and study secondary organic species produced from the organic precursors, especially related to atmospheric organic particulate matter.
09:38
Understanding Dissolved Organic Matter Biogeochemistry Through In Situ Nutrient Manipulations in Stream Ecosystems
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Cited by 3 •
2016
Dissolved organic matter provides an important source of energy and nutrients to stream ecosystems. Here we demonstrate a field-based method to manipulate the ambient pool of dissolved organic matter in situ through easily replicable nutrient pulses.
07:46
Temperature Response of Soil Organic Matter Decomposition Rates: Construction and Applications of a Temperature Gradient Block
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2026
We introduce a temperature gradient block and detail its construction and utilization. The block provides 22 discrete temperatures, linearly distributed between a user-defined range from 0 to 90 °C. Data collected from this setup enables testing and developing new theories on the temperature response of soil organic matter decomposition rates.
02:49
Classifying Matter by State
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2020
Chemistry is the study of matter and the changes it undergoes. Matter is anything that has mass and occupies space. Matter is all around us; the air, water, soil, mountains, even our bodies are all examples of matter. Matter is divided into three states — solid, liquid, and gas — that are commonly found on earth. The fourth state of matter, plasma, occurs naturally in the interiors of stars. Solids are characterized by a definite shape and volume. In a solid, the particles (atoms or...
FAQs
Production and decomposition create a biological pathway linking carbon movement with ecosystem function. Plants and other organisms generate organic compounds through processes such as photosynthesis. Bacteria, fungi, and detritivores then transform this material enzymatically, returning nutrients and releasing carbon dioxide. The balance between these processes influences how much material remains available to organisms and how much carbon persists in ecosystems.
Enzymatic decomposition breaks biological material into forms that can re-enter ecological cycles. Bacteria and fungi perform this breakdown, while detritivores contribute by processing organic remains. The resulting transformation releases nutrients for continued biological use and carbon dioxide to the surrounding system. Because these groups act on material generated by living organisms, they connect dead matter with ongoing ecosystem productivity.
Organic matter can function both as a biological resource and as a carbon reservoir. In biomass, sediments, and soils, retained carbon represents material that has not been fully returned through decomposition. Its distribution therefore matters to carbon storage, while its transformation affects climate interactions. Examining where material accumulates and how it changes helps relate biological processes to broader ecosystem patterns.
Availability of organic matter helps shape energy flow through food webs. Material produced by organisms supplies energy directly or becomes available after detritivores, bacteria, and fungi process it. Decomposition is therefore not merely removal of remains; it redistributes usable resources and nutrients among organisms. Changes in production or breakdown can alter how biological communities obtain energy and sustain activity.
Biologists study organic matter by considering its production, transformation, and distribution across biological systems. These dimensions reveal how material enters an ecosystem, how organisms alter it, and where it accumulates. Together, they support analysis of ecosystem function, decomposition, climate interactions, and nutrient movement without treating any single pool of material as isolated from the rest.
In soil studies, organic matter is relevant because it supports fertility while also storing carbon. Its biological significance extends beyond the soil itself: decomposition can release nutrients that support organisms and carbon dioxide that links soil processes with climate interactions. Comparing production, breakdown, and retention helps explain how soils participate in local productivity and larger carbon cycles.