Wyniki wyszukiwania dla: baltic herring

• On the acoustic backscattering by Baltic herring and sprat

  Publikacja

  • N. Gorska
  • J. Idczak

  - HYDROACOUSTICS - Rok 2010

  Accurate abundance estimate of Baltic clupeids, herring and sprat, is required for theirsustainable exploitation. The understanding the sound backscattering of individual fish isimportant for employing the acoustical techniques, which are widely used in the estimation.The previous studies demonstrated that the improvement of the understanding is critical forthe Baltic herring and sprat. It was the main...

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• Backscattering properties of southern Baltic herring

  Publikacja

  • J. Idczak
  • N. Kniaź-Kubacka

  - HYDROACOUSTICS - Rok 2012

  Reliable TS(L) relationship is required to improve acoustic algorithms of abundanceestimation of Baltic herring. The relationships, empirically obtained in different parts of theBaltic Sea, produce up to 8 dB – difference in the herring TS. In order to develop an accurateTS(L) relationship, it is important to analyze factors controlling the TS variability. Thepossible impact of the regional difference...

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• Methodology of the Morphometry Study on Baltic Herring

  Publikacja

  • J. Idczak

  - Rok 2022

  Acoustic techniques are used in the estimation of the abundance of Baltic herring. Investigations of the relationship between the Baltic herring individual target strength TS and the total fish length L, significant in the acoustic assessment, demonstrated its de-pendence on the study area location. It motivated the detailed analysis of the relationship between herring from the southern Baltic ICES Subdivisions 24, 25, and 26,...

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• Modelling of acoustic backscattering by southern Baltic herring

  Publikacja

  • J. Idczak
  • N. Gorska

  - HYDROACOUSTICS - Rok 2016

  Assessment of Baltic herring abundance can be carried out using acoustic techniques. Analysis of the relationship between the Baltic herring individual target strength, TS, and the total fish length, L, important for the acoustic assessment, showed the relationship to be dependent on the location of the study area. This finding motivated a detailed analysis of the relationship for the herring occurring in the southern Baltic...

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• X-ray images of Baltic herring

  Dane Badawcze

  open access

  • J. Idczak

  A methodology for studying the geometric shape of Baltic herring swimbladders including the optimal way of catching, transporting and storing fish, the X-ray measurements and the X-ray image analysis, that does not change the natural shape of the fish swimbladder was developed. Fish for research was obtained in the area of ​​the Polish coastal zone...

• Study of swimbladder morphometry of Baltic herring and sprat (development of measurement methodology)

  Publikacja

  • J. Idczak
  • N. Gorska
  • B. Arciszewski

  - HYDROACOUSTICS - Rok 2011

  Effective management of Baltic clupeids, which are valuable commercially and ecologically,requires the biomass control. The acoustical techniques are recognized as effective in fishstock assessment. The study of Baltic herring and sprat individual backscatteringcharacteristics is required for the accurate biomass estimation using acoustical techniques.The previous measurements demonstrated significant...

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• X-ray images of Baltic herring. Data analysis

  Dane Badawcze

  open access

  • J. Idczak

  Based on the developed methodology for the: (i) optimal method of catching, (ii) transporting and storing fish, (iii) measuring and (iv) analyzing X-rays images, the existing collection of X-ray images of Baltic herring, caught in October 2002 during the Swedish component of the Baltic International Acoustic Survey (BIAS) in the Baltic proper (ICES...

• Population dynamics of Baltic herring since the Viking Age revealed by ancient DNA and genomics

  Publikacja

  • L. Atmore
  • L. Martínez-García
  • D. Makowiecki
  • C. André
  • L. Lõugas
  • J. Barrett
  • B. Star

  - PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA - Rok 2022

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• Serial depletion of Baltic herring since the Viking Age revealed by ancient DNA and population genomics

  Publikacja

  • L. Atmore
  • L. Martínez-García
  • D. Makowiecki
  • C. André
  • L. Lõugas
  • J. Barrett
  • B. Star

  - Rok 2022

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• Linguistica Baltica. International Journal of Baltic Linguistics

  Czasopisma

  ISSN: 1230-3984