Association of Chemical Aggregates and Fungal Moieties Affecting Native Environmental Films

Area of Science:

• Environmental Science
• Microbiology
• Surface Chemistry

Background:

• Fungi are common in environmental films, but their influence on film properties is not well understood.
• Environmental films play a key role in material accumulation and surface processes.

Purpose of the Study:

• To investigate the short- and long-term impacts of fungi on the chemical environment and morphology of environmental films.
• To analyze fungal contributions to film surface characteristics and elemental composition.

Main Methods:

• Microscopic analysis including bright field microscopy and scanning electron microscopy (SEM).
• Chemical analysis using energy dispersive X-ray spectroscopy (EDS).
• Comparison of films accumulated over 2 months versus 12 months.

Main Results:

• Fungal colonies and aggregates covered approximately 14% of the film surface after 12 months.
• SEM-EDS revealed fungal hyphae associated with a "nutrient pool" extending up to 50 μm.
• Short-term data provided insights into mechanisms driving long-term fungal impacts.

Conclusions:

• Fungi exert both short-term and long-term influences on the chemistry and morphology of environmental film surfaces.
• The presence or absence of fungi significantly affects film development and should be considered in environmental analyses.