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Related Experiment Video

Updated: Aug 20, 2025

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A manager's guide to using eDNA metabarcoding in marine ecosystems.

Zachary Gold1, Adam R Wall2, Teia M Schweizer3

  • 1Department of Ecology and Evolutionary Biology, University of California, Los Angeles, Los Angeles, CA, United States of America.

Peerj
|November 21, 2022
PubMed
Summary
This summary is machine-generated.

Environmental DNA (eDNA) metabarcoding offers enhanced marine biodiversity monitoring. Following five key steps ensures robust eDNA monitoring programs for accurate ecosystem assessments.

Keywords:
AssessmentBiodiversityBiomonitoringManagementMarineMetabarcodingPrimer setProtocolSite occupancyeDNA

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Area of Science:

  • Marine biology
  • Molecular ecology
  • Environmental science

Background:

  • Environmental DNA (eDNA) metabarcoding is a valuable tool for marine ecosystem and biodiversity monitoring.
  • Effective implementation requires careful planning and validation.

Purpose of the Study:

  • To outline critical steps for developing robust eDNA monitoring programs.
  • To demonstrate the utility of eDNA metabarcoding in a real-world case study.

Main Methods:

  • Selection of target genes and primers.
  • Development of comprehensive reference databases.
  • Application of decontamination pipelines and pilot studies.
  • Archiving of samples and data.

Main Results:

  • eDNA metabarcoding detected 94.1% of species from trawl surveys.
  • Identified an additional 55 native fish species, improving biodiversity inventories.
  • Benchmarking enhanced ecological interpretation and confidence in species detections.

Conclusions:

  • Well-designed eDNA metabarcoding is crucial for effective biomonitoring.
  • Applications include invasive species mapping, habitat assessment, and climate change impact tracking.
  • Adherence to best practices enhances the utility and efficacy of eDNA for routine monitoring.