Is response to fire influenced by dietary specialization and mobility? A comparative study with multiple animal...

Area of Science:

• Ecology
• Animal Ecology
• Fire Ecology

Background:

• Fire is a significant driver of landscape change, influencing species composition.
• Organismal responses to fire are mediated by life history and functional traits.
• Understanding these responses is crucial for conservation and ecosystem management.

Purpose of the Study:

• To investigate the taxonomic and functional responses of eight animal groups to fire.
• To assess the role of dietary patterns (omnivorousness) and mobility in mediating fire impacts.
• To compare animal responses to vegetation changes post-fire.

Main Methods:

• Fieldwork conducted in a Mediterranean protected area across unburnt and two differently managed burnt sites.
• Data collected on 4606 specimens from 274 animal species across eight taxonomic groups.
• Statistical analyses included Bray-Curtis index, ANOSIM for community similarity, and Mantel tests for animal-plant response comparisons.

Main Results:

• Species composition and abundance varied significantly among animal groups in response to fire.
• Groups with a higher proportion of omnivorous species exhibited less difference between burnt and unburnt areas.
• Omnivorous taxa showed greater independence from vegetation changes, while high and low mobility groups had stronger fire responses, though mobility patterns were not universally significant.

Conclusions:

• Functional traits, particularly omnivorousness, play a role in how animal communities respond to fire.
• Dietary generalism may confer resilience to fire-induced environmental changes.
• While mobility influences fire response, functional traits appear to be a more consistent predictor of ecological responses to fire events.