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Updated: Oct 26, 2025

Author Spotlight: Diatom Testing for Forensic Drowning Examination

Author Spotlight: Diatom Testing for Forensic Drowning Examination

Published on: November 10, 2023

Resources and Practices to Improve Diatom Data Quality.

Janice Alers-García¹, Sylvia S Lee², Sarah A Spaulding³

¹U.S. Environmental Protection Agency, Office of Water, Office of Science and Technology, Washington, DC.

Limnology and Oceanography Bulletin

|August 2, 2021

Summary

This summary is machine-generated.

Technical challenges hinder diatom use in US water quality monitoring. Improved taxonomic references, efficient protocols, and training are crucial for accurate diatom data and environmental assessment worldwide.

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Area of Science:

Environmental Science
Ecology
Microbiology

Background:

Diatoms are key indicators in water quality monitoring.
Inconsistent taxonomy and inefficient protocols limit their effective use in the United States.
Challenges include limited access to relevant taxonomic references, poor documentation, and inadequate training.

Purpose of the Study:

To identify technical challenges in using diatoms for water quality assessment in the US.
To present available resources and practices for improving diatom data quality and interpretation.
To highlight the importance of standardized training and knowledge sharing.

Main Methods:

Review of existing resources and best practices for diatom analysis.
Identification of key challenges in diatom taxonomy and enumeration.
Discussion of initiatives for education and certification in diatom taxonomy.

Main Results:

A publicly accessible taxonomic reference (diatoms.org) and recommended practices (voucher floras, random assignment, replicate slides, quality control) can enhance data quality.
The Society for Freshwater Science is developing educational materials and certification for diatom practitioners.
These resources and practices are applicable globally for improving diatom research.

Conclusions:

Overcoming technical barriers in diatom-based water quality monitoring requires standardized taxonomic references and efficient protocols.
Enhanced training and certification programs are essential for improving the expertise of researchers and practitioners.
Implementing these improvements will lead to more reliable and accurate environmental assessments using diatoms.