Journal
METHODS IN ECOLOGY AND EVOLUTION
Volume 7, Issue 11, Pages 1299-1307Publisher
WILEY
DOI: 10.1111/2041-210X.12595
Keywords
biodiversity; eDNA; invasive species; non-destructive sampling; quantitative PCR; reporting guidelines
Categories
Funding
- Department of Defense Environmental Security Technology Certification Program [RC-201204, RC-201205]
- Danish National Research Foundation
- NSF [EPS-1208909]
- Wyoming EPSCOR WyCEHG seed grant
- NSF IGERT award [0504495]
- US DoD SERDP [RC-2240]
- Dutch Network Ecological Monitoring
- Rijkswaterstaat
- NVWA
- STOWA
- Dutch Waterboards
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Species detection using environmental DNA (eDNA) has tremendous potential for contributing to the understanding of the ecology and conservation of aquatic species. Detecting species using eDNA methods, rather than directly sampling the organisms, can reduce impacts on sensitive species and increase the power of field surveys for rare and elusive species. The sensitivity of eDNA methods, however, requires a heightened awareness and attention to quality assurance and quality control protocols. Additionally, the interpretation of eDNA data demands careful consideration of multiple factors. As eDNA methods have grown in application, diverse approaches have been implemented to address these issues. With interest in eDNA continuing to expand, supportive guidelines for undertaking eDNA studies are greatly needed. Environmental DNA researchers from around the world have collaborated to produce this set of guidelines and considerations for implementing eDNA methods to detect aquatic macroorganisms. Critical considerations for study design include preventing contamination in the field and the laboratory, choosing appropriate sample analysis methods, validating assays, testing for sample inhibition and following minimum reporting guidelines. Critical considerations for inference include temporal and spatial processes, limits of correlation of eDNA with abundance, uncertainty of positive and negative results, and potential sources of allochthonous DNA. We present a synthesis of knowledge at this stage for application of this new and powerful detection method.
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