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AquaBiota

- part of the NIRAS group

  • About us
  • Coworkers
  • Work with us
  • Contact
  • Swedish
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  • Services
  • Projects
  • Publications
    • Reports
    • Scientific publications

Hydroacoustic methods to study the pelagic ecosystem

Hydroacoustics is well established method for pelagic fish stock assessments. This technique makes possible to assess large marine areas and collect great amounts of georeferenced inventory data, which can be analysed directly or used for spatial modelling. Lately, rapid technical and computational development opened possibilities by using hydroacoustics (often in combination with other methods) to study other components of marine ecosystem. For example using multi-frequency acoustics methods we were able to demonstrate possibilities of quantitative assessment and spatial distributions modeling of other pelagic organisms such as: mesozooplankton (e.g. copepods), macrozooplankton (e.g. mysids), and jellyfish. Read more in the following reports (Swedish language); MMSS Stockholm, MMSS Södermanland.

Using stationery mounted echo-sounders is possible to address complex questions of fish (and other organism) behavior; for example study fish migration and behaviour in relation to possibly disturbing factors such as wind turbines, river dams, marine traffic etc.

Passive acoustic equipment can be used to detect cetaceans by their echo-localisation clicks. This is a very cost-efficient survey method and can even be used for estimations of absolute abundance. Read more about the SAMBAH project, which is estimating the abundance of the Baltic harbour porpoise population based data from acoustic harbour porpoise detectors.

Contact


Martin Isæus
Project director
MD, PhD Marine ecology
martin.isaeus@niras.se

News

AquaBiota – part of the NIRAS group

Sep 01

September 1st, AquaBiota joined the NIRAS group! … Read more »

AquaBiota Gasell 2022

Aug 30

AquaBiota has been appointed as a Gasell Company … Read more »

‘Mixed species groups in mammals’, one of 16 classic papers celebrating 50 years of Mammal Review

Dec 16

A paper by Eva Isaeus and others is featured in a … Read more »

Application and EIA for Storgrundet announced

Dec 16

Earlier this year, wpd submitted an application to … Read more »

Webinars about large-scale sustainable offshore wind power

Dec 15

During November and December, AquaBiota conducted … Read more »

New paper on trend correlations for coastal eutrophication

Mar 31

Trend correlations for coastal eutrophication and … Read more »

See all posts »

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AquaBiota Water Research ABWR AB

c/o NIRAS
Hantverkargatan 11B
112 21 Stockholm

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