Mesofauna

Mesofauna refers to the group of invertebrate animals that are larger than microfauna but smaller than macrofauna, typically ranging in size from approximately 0.1 to 2 millimeters. They play a crucial role in soil ecosystems, contributing to decomposition, nutrient cycling, and soil structure development. This diverse assemblage includes organisms like mites, nematodes, springtails (Collembola), and small worms. These invertebrates inhabit the spaces between soil particles and within the organic matter, impacting the health and functionality of terrestrial and aquatic environments through their feeding habits and interactions with other organisms.

Mesofauna meaning with examples

• In a study examining forest floor decomposition, researchers observed that Mesofauna, particularly mites and springtails, were the primary agents breaking down leaf litter. Their feeding activity facilitated the release of nutrients, accelerating the process of organic matter transformation and benefiting plant growth.
• The introduction of certain pesticides negatively impacted the Mesofauna population in agricultural fields. This, in turn, led to a slower rate of organic matter decomposition and reduced nutrient availability, affecting crop yields and soil fertility within the ecosystem.
• Soil scientists often use the abundance and diversity of Mesofauna as indicators of soil health. A thriving and diverse mesofaunal community suggests a healthy soil with good organic matter content and minimal environmental stress or pollution.
• The presence of diverse Mesofauna in wetland ecosystems helps to maintain water quality by contributing to the decomposition of organic material and recycling of nutrients, crucial for the plants and animals in the ecosystem. They are also food for larger animals.