A structured guide to airborne environmental DNA: what it is, how it moves through landscapes, where detection is reliable, and how it is already being used to monitor biodiversity at scale. Select any question to read the full answer.
What is it & how does it work?
A foundation in the biology of airborne eDNA — what organisms shed, how particles form and degrade, the laboratory pipeline from filter to species list, and how air compares to water and soil as a sampling medium.
Transport & dispersal
How eDNA particles travel through the landscape: turbulent dispersal, deposition, decay, and the spatial scales over which detection remains meaningful for ecological interpretation.
Reliability & limits
The limits of the technology: what cannot yet be reliably detected, sources of false positives, contamination risks, and the statistical confidence we can place on presence or absence calls.
- Does detecting eDNA mean the species is actually present there?
- Can airborne eDNA tell us how many individuals are present — is it quantitative?
- How reliable is species identification from airborne eDNA — what causes misidentification?
- What are the main sources of contamination and how are they controlled?
Applications
Where airborne eDNA monitoring is close to being put to work — early detection of invasive species, cost-effective biodiversity baselines, agricultural pathogen surveillance, and the regulatory protocols and ethical considerations that govern operational deployment.
- Can airborne eDNA detect invasive species before they are visually observed?
- Can airborne eDNA detect agricultural pathogens and crop pests in time to act?
- What standards and protocols exist for airborne eDNA monitoring, and what needs to be agreed before regulatory use?
- Does airborne eDNA raise privacy concerns — can it reveal information about people without their knowledge?