Nutrient Flow
The benthic zone being the lowest ecological zone in a water body, consists of the sediments at the seafloor. Organisms in the benthic zone regulate the flow of nutrients between the sediment layer and the water column. Benthic animals contribute to biogeochemical processes and fluxes between water and sediments in two ways:
- Directly: Through the metabolic processes performed by the benthic organisms.
- Indirectly: The nutrient flux in the benthic zone take place in the following manner:
- Decomposition: Bacteria and fungi decompose the organic mater present in the benthic zone.
- Nutrient Recycling: Benthos or the deposit feeders consume organic matter and recycle nutrients.
- Denitrification: Benthic bacteria facilitate denitrification which produces nitrogen gas from nitrates.
- Nutrient Transport: Tidal and current movements transport nutrients between the benthic zone and water column.
Benthic Zone – Definition & Characteristics
The Benthic zone is the ecological region at the lowest level of a body of water such as a lake, ocean, and some sub-surface. The zone is characterized by low temperature, high pressure, and limited sunlight. The organisms that live in the benthic zone include bacteria, sea stars, and sea urchins. They play a significant role in nutrient cycling and act as a source of food for other aquatic organisms. In this article, we will learn about the benthic zone, its examples, animals, plants, and importance.
Table of Content
- Benthic Zone Definition
- Benthic Zone
- Benthic Zone Diagram
- Characteristics of Benthic Zone
- What are Benthos?
- Types of Benthic Zone
- Benthic Zone Examples
- Benthic Zone Animals
- Benthic Zone Depth
- Nutrient Flow
- Difference Between Pelagic and Benthic zone
- Importance of the Benthic Zone
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