Meta-analysis shows that environmental DNA outperforms traditional surveys, but warrants better reporting standards.

Decades of environmental DNA (eDNA) method application, spanning a wide variety of taxa and habitats, has advanced our understanding of eDNA and underlined its value as a tool for conservation practitioners. The general consensus is that eDNA methods are more accurate and cost-effective than traditional survey methods. However, they are formally approved for just a few species globally (e.

Behavior and season affect crayfish detection and density inference using environmental DNA.

Although the presence/absence of aquatic invertebrates using environmental DNA (eDNA) has been established for several species, inferring population densities has remained problematic. The invasive American signal crayfish, (Dana), is the leading cause of decline in the UK's only native crayfish species, (Lereboullet). Methods to detect species at low abundances offer the opportunity for the early detection, and potential eradication, of before population densities reach threatening levels in areas occupied by .