What is biomass evaluation and why is it useful?
Biomass evaluation at sea is a survey of the total quantity or weight of organisms, such as fish or krill, in a given area or volume. This is of great value for resource management and helps support sustainable fisheries.
Being able to combine the documentation of biomass with data on the speed and direction of currents can add considerable value to a research project. For example, having precise information on currents may help researchers more accurately calculate the size and weight of schools of fish or swarms of krill.
Living organisms also make a biological imprint on physical ocean processes and can reveal details of layered flow patterns that are undetectable using classic ADCP technology. The way in which living creatures react with the physical processes in the ocean can be analyzed, while observing the biological imprint can help researchers study physical processes on a much smaller scale, and with greater precision.
The desired end result is a clear understanding of the volume and dynamics of biomass in the ocean’s ecosystem, and how this biomass varies over time. For example, biomass surveys can help find types of fish in waters where they were previously unknown. Nortek’s solutions can also help researchers monitor biomass far from land, where it would be impractical and expensive to use boats to continuously conduct surveys. Furthermore, Nortek’s technology enables researchers to deploy monitoring instrumentation at greater depths, beyond the range of echo sounders mounted on ships.
This is of great value to the scientific community, as we have limited knowledge about the nature of marine life at depths of over 500 m.