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HomeHomework Helpenvironmental-scienceBiogeochemical Cycling

Biogeochemical Cycling

Biogeochemical cycling in aquatic systems refers to the continuous movement and transformation of essential chemical elements and compounds, such as carbon, nitrogen, and phosphorus, through biological organisms, geological processes, and chemical reactions within aquatic environments. This cycling is crucial for maintaining ecosystem health and supporting life in freshwater and marine ecosystems.

intermediate
3 hours
Environmental Science
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Overview

Biogeochemical cycling in aquatic systems is a fundamental process that ensures the movement and transformation of essential nutrients like carbon, nitrogen, and phosphorus. These cycles are crucial for maintaining ecosystem health, supporting aquatic life, and regulating water quality. Understandin...

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Key Terms

Biogeochemical Cycle
The cycle of chemical elements and compounds moving through biological and geological processes.

Example: The carbon cycle involves the movement of carbon through the atmosphere, oceans, and living organisms.

Eutrophication
The process by which water bodies become overly enriched with nutrients, leading to excessive growth of algae.

Example: Eutrophication can cause dead zones in lakes where oxygen levels are too low for fish.

Nitrogen Fixation
The conversion of atmospheric nitrogen into a usable form for plants by certain bacteria.

Example: Legumes have nitrogen-fixing bacteria in their roots that help enrich the soil.

Decomposition
The breakdown of organic matter by microorganisms, releasing nutrients back into the environment.

Example: Fallen leaves decompose in water, providing nutrients for aquatic plants.

Algal Bloom
A rapid increase in the population of algae in water bodies, often due to nutrient overload.

Example: Algal blooms can turn water green and produce toxins harmful to aquatic life.

Phosphorus Cycle
The movement of phosphorus through the environment, primarily through soil, water, and living organisms.

Example: Phosphorus is often found in fertilizers and can run off into lakes, causing eutrophication.

Related Topics

Aquatic Ecosystem Dynamics
Study the interactions and relationships within aquatic ecosystems and their responses to environmental changes.
intermediate
Water Pollution Control
Explore methods and strategies to manage and reduce pollution in water bodies.
advanced
Climate Change Effects on Water Bodies
Investigate how climate change impacts aquatic systems and biogeochemical cycles.
advanced

Key Concepts

Nutrient CyclingEcosystem HealthWater QualityMicrobial Processes