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- Acoustic_survey_in_fishing abstract "Acoustic survey in fishing is one of the research methods that can detect the abundance of target species using acoustic detectors.For example, many pelagic fisheries are generally very scattered over a broad ocean and difficult to detect.Hence survey vessel with acoustic detector emits sound waves to estimate the density of plankton and fish shoal.Generally, the transducer is put under water, which is linked to an echo sounder in the vessel which records the shoals of fish as "marks" on a screen or paper trace. Then the density and number of marks are converted into biomass.One real case of acoustic survey was conducted In July 1993 to examine pre-spawning concentration of autumn-spawning herring using a Simrad EK 500 38-kHz sounder and echo-integrator in the fisheries research vessel in FRV Scotia. The survey track was set based on the limit of herring densities in previous years. A transect spacing of 15 nautical miles (1n.miles = 1850m) was used. Data from the echo integrator were summed over a 15-min period (2.5n.miles at 10 nots; 1 knot=1852 km/h). The echo sound provided approximately 2.5*10,000,000 measurements of fish density during acoustic survey of herring population.Acoustic survey is also used for land animals like bats for bat habitat management. Acoustic survey is conducted to find out bat occurrence and activity patterns and other emerging features on bat populations. Acoustic survey has an advantage since it can be conducted over greater spatial extents in many habitats with little cost, but drawbacks are species identification difficulty and population size counting unavailability. Despite the drawbacks, acoustic survey remains as an important tool to address many bat research monitoring.".
- Acoustic_survey_in_fishing wikiPageExternalLink Acoustic+Surveys.htm.
- Acoustic_survey_in_fishing wikiPageID "33546615".
- Acoustic_survey_in_fishing wikiPageLength "2831".
- Acoustic_survey_in_fishing wikiPageOutDegree "10".
- Acoustic_survey_in_fishing wikiPageRevisionID "529586440".
- Acoustic_survey_in_fishing wikiPageWikiLink Acoustic_detector.
- Acoustic_survey_in_fishing wikiPageWikiLink Bat.
- Acoustic_survey_in_fishing wikiPageWikiLink Category:Fisheries_science.
- Acoustic_survey_in_fishing wikiPageWikiLink Echo_sounder.
- Acoustic_survey_in_fishing wikiPageWikiLink Echo_sounding.
- Acoustic_survey_in_fishing wikiPageWikiLink Fish_shoal.
- Acoustic_survey_in_fishing wikiPageWikiLink Fisheries.
- Acoustic_survey_in_fishing wikiPageWikiLink Fishery.
- Acoustic_survey_in_fishing wikiPageWikiLink Herring.
- Acoustic_survey_in_fishing wikiPageWikiLink Pelagic.
- Acoustic_survey_in_fishing wikiPageWikiLink Pelagic_zone.
- Acoustic_survey_in_fishing wikiPageWikiLink Plankton.
- Acoustic_survey_in_fishing wikiPageWikiLink Shoaling_and_schooling.
- Acoustic_survey_in_fishing wikiPageWikiLink Transducer.
- Acoustic_survey_in_fishing wikiPageWikiLinkText "Acoustic survey in fishing".
- Acoustic_survey_in_fishing hasPhotoCollection Acoustic_survey_in_fishing.
- Acoustic_survey_in_fishing wikiPageUsesTemplate Template:Hydroacoustics.
- Acoustic_survey_in_fishing wikiPageUsesTemplate Template:Reflist.
- Acoustic_survey_in_fishing subject Category:Fisheries_science.
- Acoustic_survey_in_fishing hypernym Methods.
- Acoustic_survey_in_fishing type Software.
- Acoustic_survey_in_fishing type Fishery.
- Acoustic_survey_in_fishing type Fishery.
- Acoustic_survey_in_fishing comment "Acoustic survey in fishing is one of the research methods that can detect the abundance of target species using acoustic detectors.For example, many pelagic fisheries are generally very scattered over a broad ocean and difficult to detect.Hence survey vessel with acoustic detector emits sound waves to estimate the density of plankton and fish shoal.Generally, the transducer is put under water, which is linked to an echo sounder in the vessel which records the shoals of fish as "marks" on a screen or paper trace. ".
- Acoustic_survey_in_fishing label "Acoustic survey in fishing".
- Acoustic_survey_in_fishing sameAs m.0hgr5z2.
- Acoustic_survey_in_fishing sameAs Q4674714.
- Acoustic_survey_in_fishing sameAs Q4674714.
- Acoustic_survey_in_fishing wasDerivedFrom Acoustic_survey_in_fishing?oldid=529586440.
- Acoustic_survey_in_fishing isPrimaryTopicOf Acoustic_survey_in_fishing.