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Changes in Soil Fungal Community Structure with Increasing Disturbance Frequency
Hyunjun Cho1, Mincheol Kim2, Binu Tripathi2
1Department of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul, 151-742, South Korea.
Microbial Ecology
|January 8, 2017
Summary
Soil fungal diversity decreases with increased disturbance frequency, contrary to patterns seen in larger organisms. This suggests competition may not limit soil fungal communities.
Area of Science:
- Ecology
- Soil Science
- Mycology
Background:
- Ecological disturbance is crucial, yet soil fungal community responses remain understudied experimentally.
- Soil fungal communities play vital roles in ecosystem functioning.
Purpose of the Study:
- To experimentally investigate how soil fungal communities respond to varying frequencies of physical disturbance.
- To determine the impact of disturbance on fungal diversity, community composition, and functional profiles.
Main Methods:
- Soil microcosms were subjected to physical disturbance at different frequencies.
- Fungal community structure was analyzed using Illumina HiSeq sequencing of the ITS1 region.
Main Results:
- Fungal diversity declined significantly with increasing disturbance frequencies.
- No humpback pattern was observed, suggesting competition may not limit soil fungal diversity.
- Disturbance frequency consistently altered fungal community composition and functional guilds.
- Fungi were relatively more abundant than bacteria at intermediate disturbance frequencies.
Conclusions:
- Soil fungal communities exhibit predictable shifts in composition and function in response to disturbance frequency.
- These findings suggest that soil fungi may occupy distinct niches related to disturbance regimes.
- Competition might not be the primary driver of soil fungal diversity limitation.
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