A simple method to correct the results of acoustic surveys for fish hidden in the dead zone

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F13%3A00392325" target="_blank" >RIV/60077344:_____/13:00392325 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12310/13:43885371 RIV/60076658:12510/13:43885371

Result on the web

<a href="http://dx.doi.org/10.1111/jai.12091" target="_blank" >http://dx.doi.org/10.1111/jai.12091</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jai.12091" target="_blank" >10.1111/jai.12091</a>

Result language

angličtina

Original language name

A simple method to correct the results of acoustic surveys for fish hidden in the dead zone

Original language description

In lentic freshwater systems, vertical acoustics may underestimate fish abundance in the acoustic dead zone where fish detection capability is limited. To estimate this bias, the height of fish above the lead-line of a benthic multi-mesh gillnet (1.5 m high) was used to quantify both the vertical distribution of fish near the bottom and the proportion residing within the acoustic dead zone. The study was carried out at the percid-dominated Biesbosch Reservoirs in the Netherlands. Acoustic dead zones were estimated at 7 cm above flat bottoms, and 12?34 cm above 8° sloped bottoms at depths of 5?27 m, respectively. Depending on the habitat, 36 to 75% of the gillnet catch by number was present in the acoustic dead zone, representing 5?51% of the biomass. Near-bottom depths were highly preferred by ruffe Gymnocephalus cernua, often used by perch Perca fluviatilis and pikeperch Sander lucioperca, plus seemingly devoid of smelt Osmerus eperlanus. The total amount of fish hidden in the acousti

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EH - Ecology - communities

OECD FORD branch

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Project

<a href="/en/project/QH81046" target="_blank" >QH81046: Optimalisation of the biomanipulative effect of predatory fish in ecosystems of water reservoirs.</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Applied Ichthyology

ISSN

0175-8659

e-ISSN

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Volume of the periodical

29

Issue of the periodical within the volume

2

Country of publishing house

DE - GERMANY

Number of pages

6

Pages from-to

358-363

UT code for WoS article

000316223900008

EID of the result in the Scopus database

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