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Aquatic Biology Associates

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Studying freshwater invertebrates since 1984

Aquatic Biology Associates is the longest established independent laboratory in western North America providing consulting services for aquatic invertebrates.

Mary Jo Wevers, CEO, has been working as an aquatic ecologist for four decades. Robert Wisseman, Senior Scientist, has been closely involved in developing national and state bioassessment protocols for evaluating the health and integrity of freshwater ecosystems.

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The personable and knowledgeable staff at ABA, Inc. combined with high quality results and transparent interpretation make returning to ABA year after year with our macroinvertebrate samples an easy choice.

– Rachael Pecore, Columbia
Riverkeeper, Oregon

Transforming your data into information

We are experts in freshwater macro- invertebrate identification, having analyzed 30,000+ macroinvertebrate samples from streams, rivers, springs, wetlands, ponds and lakes throughout western North America.

Our technical services include field sampling, endangered invertebrate species surveys, and quantitative analysis of macroinvertebrate communities and fish diets.

We provide statistical data analysis in a variety of formats, interpretation of results to meet your needs, and prepared reports.

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San Marino Environmental Associates has used ABA for many years, and has found them to produce high quality, accurate work in a timely manner at reasonable prices.

– Jonathan N. Baskin, Ph.D., San Marino Environmental Associates, California

Providing personal attention for your project

ABA remains a small lab by choice in order to provide personal attention for all phases of your project.

We help clarify project objectives and assess your data needs to provide quality results that are cost effective.

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I’ve worked with Mary Jo Wevers at ABA for over 25 years. Throughout that time ABA has provided excellent service providing timely processing of aquatic macroinvertebrate samples while I was a manager of the biomonitoring section for the Oregon Department of Environmental Quality, and for work I’ve performed as an independent consultant. Mary Jo and ABA have been a pleasure to work with and continue to provide excellent service and results.

– Rick Haefele
Oregon Department of
Environmental Quality (retired)

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