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Related Experiment Video

Updated: Aug 31, 2025

Collection and Extraction of Saliva DNA for Next Generation Sequencing

Collection and Extraction of Saliva DNA for Next Generation Sequencing

Published on: August 27, 2014

Extracting abundance information from DNA-based data.

Mingjie Luo^1,2, Yinqiu Ji¹, David Warton^3,4

¹State Key Laboratory of Genetic Resources and Evolution and Yunnan Key Laboratory of Biodiversity and Ecological Security of Gaoligong Mountain, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.

Molecular Ecology Resources

|August 20, 2022

Summary

This summary is machine-generated.

Accurate species abundance data from DNA metabarcoding and metagenomics is crucial for ecology. This study introduces methods, including DNA spike-ins, to correct errors and improve abundance quantification for reliable ecological insights.

Keywords:

Arthropoda DNA barcoding Insecta biomonitoring community composition environmental DNA internal standard polymerase chain reaction taxonomic bias

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Last Updated: Aug 31, 2025

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Published on: August 27, 2014

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Efficient Nucleic Acid Extraction and 16S rRNA Gene Sequencing for Bacterial Community Characterization

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Area of Science:

Ecology
Molecular Biology
Bioinformatics

Background:

DNA-based methods like metabarcoding and metagenomics offer powerful tools for ecological studies.
However, data inaccuracies arise from sampling and processing biases, affecting species abundance estimations.
Distinguishing between within-sample (across-species) and across-sample (within-species) quantification is key to addressing these errors.

Conclusions:

Accurate species-abundance data is vital for ecological applications, including diet analysis and biomonitoring.
The presented methods, particularly DNA spike-ins and model-based estimation, significantly improve the reliability of DNA-based abundance data.
These advancements enable more robust ecological inferences from metabarcoding and metagenomics datasets.