Life history strategies of fishes across environmental gradients in estuaries
International audience The demographic strategies of fishes can be defined by specific combinations of traits expressed by organisms to cope with environmental constrains. Species traits thus influence the distribution and abundance of organisms by excluding species with traits poorly adapted to loc...
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ftccsdartic:oai:HAL:hal-02604952v1 2023-05-15T17:38:35+02:00 Life history strategies of fishes across environmental gradients in estuaries Histoire de vie des poissons au sein des gradients estuariens Teichert, Nils Pasquaud, Stéphanie Uriarte, A. Borja, A. Chust, G. Lepage, Mario Ecosystèmes aquatiques et changements globaux (UR EABX) Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) UNIVERSIDADE DE LISBOA CENTRO DE OCEANOGRAFIA LISBON PRT Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) AZTI-TECNALIA MARINE RESEARCH DIVISION PASAIA ESP Murcia, Spain 2016-03-01 https://hal.inrae.fr/hal-02604952 en eng HAL CCSD hal-02604952 https://hal.inrae.fr/hal-02604952 IRSTEA: PUB00051266 7th EUROLAG Symposium https://hal.inrae.fr/hal-02604952 7th EUROLAG Symposium, Mar 2016, Murcia, Spain. pp.22 [SDE]Environmental Sciences info:eu-repo/semantics/conferenceObject Conference papers 2016 ftccsdartic 2021-11-07T01:08:30Z International audience The demographic strategies of fishes can be defined by specific combinations of traits expressed by organisms to cope with environmental constrains. Species traits thus influence the distribution and abundance of organisms by excluding species with traits poorly adapted to local conditions and enhancing performances of organisms possessing advantageous attributes. Fishes in estuaries belong to several ecological guilds, i.e. marine, freshwater, diadromous, and resident species, which perceive and respond to environmental components at different scales. In the present study, we hypothesized that the distributions of fish species across to gradient of estuarine habitats are related to their life history strategies. Eight life history traits were considered to reflect the demographic strategies of 168 taxa caught in 47 estuaries of the North East Atlantic coast. Our findings were replaced within a conceptual triangular model of life history, composed on three endpoint strategies: periodic (large, long generation time, high fecundity), opportunistic (small, short generation time, high reproductive effort) and equilibrium (low fecundity, large egg size, parental care). Various life history strategies co-occur in estuarine systems depending on fish ecological guilds, but our results demonstrated that species were mainly distributed along to an opportunistic-periodic gradient. The opportunistic attributes of estuarine resident species provided them high degree of demographic resilience, so that they can deal with a large range of estuarine environmental settings. However, the increasing of stressful conditions over the salinity gradient was appeared as crucial factor structuring the assemblages of resident fishes based on their demographic strategies. Our results highlighted a filtering effect associated with the system size. In small estuaries, fish assemblages are mainly composed on resident species with opportunistic traits, whereas the proportion of individuals with periodic attributes ... Conference Object North East Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDE]Environmental Sciences |
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[SDE]Environmental Sciences Teichert, Nils Pasquaud, Stéphanie Uriarte, A. Borja, A. Chust, G. Lepage, Mario Life history strategies of fishes across environmental gradients in estuaries |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience The demographic strategies of fishes can be defined by specific combinations of traits expressed by organisms to cope with environmental constrains. Species traits thus influence the distribution and abundance of organisms by excluding species with traits poorly adapted to local conditions and enhancing performances of organisms possessing advantageous attributes. Fishes in estuaries belong to several ecological guilds, i.e. marine, freshwater, diadromous, and resident species, which perceive and respond to environmental components at different scales. In the present study, we hypothesized that the distributions of fish species across to gradient of estuarine habitats are related to their life history strategies. Eight life history traits were considered to reflect the demographic strategies of 168 taxa caught in 47 estuaries of the North East Atlantic coast. Our findings were replaced within a conceptual triangular model of life history, composed on three endpoint strategies: periodic (large, long generation time, high fecundity), opportunistic (small, short generation time, high reproductive effort) and equilibrium (low fecundity, large egg size, parental care). Various life history strategies co-occur in estuarine systems depending on fish ecological guilds, but our results demonstrated that species were mainly distributed along to an opportunistic-periodic gradient. The opportunistic attributes of estuarine resident species provided them high degree of demographic resilience, so that they can deal with a large range of estuarine environmental settings. However, the increasing of stressful conditions over the salinity gradient was appeared as crucial factor structuring the assemblages of resident fishes based on their demographic strategies. Our results highlighted a filtering effect associated with the system size. In small estuaries, fish assemblages are mainly composed on resident species with opportunistic traits, whereas the proportion of individuals with periodic attributes ... |
author2 |
Ecosystèmes aquatiques et changements globaux (UR EABX) Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) UNIVERSIDADE DE LISBOA CENTRO DE OCEANOGRAFIA LISBON PRT Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) AZTI-TECNALIA MARINE RESEARCH DIVISION PASAIA ESP |
format |
Conference Object |
author |
Teichert, Nils Pasquaud, Stéphanie Uriarte, A. Borja, A. Chust, G. Lepage, Mario |
author_facet |
Teichert, Nils Pasquaud, Stéphanie Uriarte, A. Borja, A. Chust, G. Lepage, Mario |
author_sort |
Teichert, Nils |
title |
Life history strategies of fishes across environmental gradients in estuaries |
title_short |
Life history strategies of fishes across environmental gradients in estuaries |
title_full |
Life history strategies of fishes across environmental gradients in estuaries |
title_fullStr |
Life history strategies of fishes across environmental gradients in estuaries |
title_full_unstemmed |
Life history strategies of fishes across environmental gradients in estuaries |
title_sort |
life history strategies of fishes across environmental gradients in estuaries |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.inrae.fr/hal-02604952 |
op_coverage |
Murcia, Spain |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
7th EUROLAG Symposium https://hal.inrae.fr/hal-02604952 7th EUROLAG Symposium, Mar 2016, Murcia, Spain. pp.22 |
op_relation |
hal-02604952 https://hal.inrae.fr/hal-02604952 IRSTEA: PUB00051266 |
_version_ |
1766139094528688128 |