SCHOOL TYPOLOGY AND 3D DYNAMICS: STUDY OF THE BEHAVIOURAL MECHANISMS ALLOWING ADAPTATIONS OF COLLECTIVE STRUCTURE TO ENVIRONMENTAL CHANGES

Being the collective interface with the environment and the exploitation, schools and their typology represent an important life history trait of gregarious fish. Changes in the characteristics of the environment sensu largo induce changes in the school typology, which can be used as indicator of st...

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Autores principales:	Gerlotto,Francois, Gutierrez,Mariano, Bertrand,Sophie
Lenguaje:	English
Publicado:	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción 2004
Materias:	school typology school dynamics anchovy multibeam sonar geostatistics fractal dimensions
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000200041
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spelling	oai:scielo:S0717-653820040002000412005-05-16SCHOOL TYPOLOGY AND 3D DYNAMICS: STUDY OF THE BEHAVIOURAL MECHANISMS ALLOWING ADAPTATIONS OF COLLECTIVE STRUCTURE TO ENVIRONMENTAL CHANGESGerlotto,FrancoisGutierrez,MarianoBertrand,Sophie school typology school dynamics anchovy multibeam sonar geostatistics fractal dimensions Being the collective interface with the environment and the exploitation, schools and their typology represent an important life history trait of gregarious fish. Changes in the characteristics of the environment sensu largo induce changes in the school typology, which can be used as indicator of stock adaptive patterns. In order to understand the interactions between school structure and environment patterns, a first step consists in studying the school internal structure and the functioning of fish aggregation inside it and in its surroundings. The paper describes the spatial morphology and dynamics changes in Peruvian Anchovy (Engraulis ringens) schools in Peru using multibeam sonar observation on a station. Different cases of school types are extracted from a data base of around 200 recordings: from small circular well individualized schools to large aggregation surrounded by scattered targets. The internal structure of the aggregations is described at a 10 cm definition scale. The shape and dynamics of internal structures (nuclei) are described. The school edges are measured in shape and dynamics, and the relationship between the school and the fish surrounding the school are measured, using geostatistics and fractal dimensions approachesinfo:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana (Concepción) v.68 n.2 suppl.TIProc 20042004-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000200041en10.4067/S0717-65382004000200041
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	school typology school dynamics anchovy multibeam sonar geostatistics fractal dimensions
spellingShingle	school typology school dynamics anchovy multibeam sonar geostatistics fractal dimensions Gerlotto,Francois Gutierrez,Mariano Bertrand,Sophie SCHOOL TYPOLOGY AND 3D DYNAMICS: STUDY OF THE BEHAVIOURAL MECHANISMS ALLOWING ADAPTATIONS OF COLLECTIVE STRUCTURE TO ENVIRONMENTAL CHANGES
description	Being the collective interface with the environment and the exploitation, schools and their typology represent an important life history trait of gregarious fish. Changes in the characteristics of the environment sensu largo induce changes in the school typology, which can be used as indicator of stock adaptive patterns. In order to understand the interactions between school structure and environment patterns, a first step consists in studying the school internal structure and the functioning of fish aggregation inside it and in its surroundings. The paper describes the spatial morphology and dynamics changes in Peruvian Anchovy (Engraulis ringens) schools in Peru using multibeam sonar observation on a station. Different cases of school types are extracted from a data base of around 200 recordings: from small circular well individualized schools to large aggregation surrounded by scattered targets. The internal structure of the aggregations is described at a 10 cm definition scale. The shape and dynamics of internal structures (nuclei) are described. The school edges are measured in shape and dynamics, and the relationship between the school and the fish surrounding the school are measured, using geostatistics and fractal dimensions approaches
author	Gerlotto,Francois Gutierrez,Mariano Bertrand,Sophie
author_facet	Gerlotto,Francois Gutierrez,Mariano Bertrand,Sophie
author_sort	Gerlotto,Francois
title	SCHOOL TYPOLOGY AND 3D DYNAMICS: STUDY OF THE BEHAVIOURAL MECHANISMS ALLOWING ADAPTATIONS OF COLLECTIVE STRUCTURE TO ENVIRONMENTAL CHANGES
title_short	SCHOOL TYPOLOGY AND 3D DYNAMICS: STUDY OF THE BEHAVIOURAL MECHANISMS ALLOWING ADAPTATIONS OF COLLECTIVE STRUCTURE TO ENVIRONMENTAL CHANGES
title_full	SCHOOL TYPOLOGY AND 3D DYNAMICS: STUDY OF THE BEHAVIOURAL MECHANISMS ALLOWING ADAPTATIONS OF COLLECTIVE STRUCTURE TO ENVIRONMENTAL CHANGES
title_fullStr	SCHOOL TYPOLOGY AND 3D DYNAMICS: STUDY OF THE BEHAVIOURAL MECHANISMS ALLOWING ADAPTATIONS OF COLLECTIVE STRUCTURE TO ENVIRONMENTAL CHANGES
title_full_unstemmed	SCHOOL TYPOLOGY AND 3D DYNAMICS: STUDY OF THE BEHAVIOURAL MECHANISMS ALLOWING ADAPTATIONS OF COLLECTIVE STRUCTURE TO ENVIRONMENTAL CHANGES
title_sort	school typology and 3d dynamics: study of the behavioural mechanisms allowing adaptations of collective structure to environmental changes
publisher	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000200041
work_keys_str_mv	AT gerlottofrancois schooltypologyand3ddynamicsstudyofthebehaviouralmechanismsallowingadaptationsofcollectivestructuretoenvironmentalchanges AT gutierrezmariano schooltypologyand3ddynamicsstudyofthebehaviouralmechanismsallowingadaptationsofcollectivestructuretoenvironmentalchanges AT bertrandsophie schooltypologyand3ddynamicsstudyofthebehaviouralmechanismsallowingadaptationsofcollectivestructuretoenvironmentalchanges
_version_	1718442067851476992

SCHOOL TYPOLOGY AND 3D DYNAMICS: STUDY OF THE BEHAVIOURAL MECHANISMS ALLOWING ADAPTATIONS OF COLLECTIVE STRUCTURE TO ENVIRONMENTAL CHANGES

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