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A Low-Cost Method of Measuring the In Situ Primary Productivity of Periphyton Communities of Lentic Waters

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RotoBOD─Quantifying Oxygen Consumption by Suspended Particles and Organisms.

Clarissa Karthäuser¹, Paul D Fucile¹, Amy E Maas²

¹Woods Hole Oceanographic Institution, 266 Woods Hole Road, Woods Hole, Falmouth, Massachusetts 02543, United States.

Environmental Science & Technology

|May 8, 2024

Summary

A new rotating incubator, the RotoBOD, simulates natural plankton suspension for accurate oxygen measurements. This method preserves organism metabolism and allows for further non-destructive analyses.

Keywords:

biogeochemistry biotechnology oxygen consumption planktonic organisms respirometry rotating incubator sinking particles suspended samples

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The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations

Published on: August 3, 2016

Area of Science:

Marine biology
Oceanography
Biogeochemistry

Background:

Planktonic organisms naturally sink or float, influencing their metabolism and interactions.
Accurate measurements require simulating these natural suspension conditions to avoid altered metabolic rates.
Existing methods often fail to maintain the natural state of plankton during measurements.

Purpose of the Study:

To develop a novel rotating incubator, the RotoBOD, for simulating natural plankton suspension.
To enable automated, sensitive oxygen measurements in small sample volumes.
To facilitate non-destructive characterization of planktonic organisms and particles.

Main Methods:

Development of the RotoBOD rotating incubator for automated oxygen measurements.
Maintaining planktonic organisms and particles in a state of natural suspension.
Utilizing the apparatus for sensitive rate measurements of oxygen utilization.

Main Results:

The RotoBOD enables automated oxygen measurements in small volumes while preserving natural suspension.
Highly sensitive rate measurements of oxygen utilization are achievable.
The non-destructive nature allows for subsequent analyses like stable isotope and molecular studies.

Conclusions:

The RotoBOD is a valuable tool for ecologists and biogeochemists studying plankton.
It allows for accurate metabolic rate measurements of small planktonic organisms and particles.
The instrument supports combined measurements, enhancing ecological and biogeochemical research.