Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries
The life history strategies of fishes can be defined by specific combinations of demographic traits that influence species performances depending on environmental features. Hence, the constraints imposed by the local conditions restrict the range of successful strategies by excluding species poorly...
Published in: | Estuarine, Coastal and Shelf Science |
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Online Access: | http://hdl.handle.net/10451/41191 https://doi.org/10.1016/j.ecss.2017.02.006 |
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ftunivlisboa:oai:repositorio.ul.pt:10451/41191 2023-05-15T17:38:33+02:00 Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries Teichert, Nils Pasquaud, Stéphanie Borja, Angel Chust, Guillem Uriarte, Ainhize Lepage, Mario 2020-01-19T20:37:05Z http://hdl.handle.net/10451/41191 https://doi.org/10.1016/j.ecss.2017.02.006 eng eng Elsevier https://www.sciencedirect.com/science/article/pii/S0272771417301348 0272-7714 http://hdl.handle.net/10451/41191 doi:10.1016/j.ecss.2017.02.006 restrictedAccess Fish assemblage Demographic strategies Salinity gradient Human disturbance Environmental stress article 2020 ftunivlisboa https://doi.org/10.1016/j.ecss.2017.02.006 2022-05-25T18:40:01Z The life history strategies of fishes can be defined by specific combinations of demographic traits that influence species performances depending on environmental features. Hence, the constraints imposed by the local conditions restrict the range of successful strategies by excluding species poorly adapted. In the present study, we compared the demographic strategies of fish caught in 47 estuaries of the North East Atlantic coast, aiming to determine the specific attributes of resident species and test for changes in trait associations along the environmental gradients. Eight demographic traits were considered to project our findings within a conceptual triangular model, composed on three endpoint strategies: (i) periodic (large size, long generation time, high fecundity); (ii) opportunistic (small size, short generation time, high reproductive effort); and (iii) equilibrium (low fecundity, large egg size, parental care). We demonstrated that various life history strategies co-exist in estuaries, but equilibrium species were scarce and restricted to euhaline open-water. Resident species form a specialised assemblage adapted to high spatiotemporal variability of estuarine conditions, i.e. opportunistic attributes associated with parental care. Even with these singular attributes, our findings revealed changes in distribution of resident species across the estuarine gradients linked to their life history traits. Among other patterns, the diversity of life history strategies significantly decreased from euhaline to oligohaline areas and along gradient of human disturbances. These trends were associated with a convergence of species traits toward short generation times, suggesting that long-lived species with late maturation are more severely impacted by disturbance and environmental stress. info:eu-repo/semantics/publishedVersion Article in Journal/Newspaper North East Atlantic Universidade de Lisboa: repositório.UL Estuarine, Coastal and Shelf Science 188 18 26 |
institution |
Open Polar |
collection |
Universidade de Lisboa: repositório.UL |
op_collection_id |
ftunivlisboa |
language |
English |
topic |
Fish assemblage Demographic strategies Salinity gradient Human disturbance Environmental stress |
spellingShingle |
Fish assemblage Demographic strategies Salinity gradient Human disturbance Environmental stress Teichert, Nils Pasquaud, Stéphanie Borja, Angel Chust, Guillem Uriarte, Ainhize Lepage, Mario Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries |
topic_facet |
Fish assemblage Demographic strategies Salinity gradient Human disturbance Environmental stress |
description |
The life history strategies of fishes can be defined by specific combinations of demographic traits that influence species performances depending on environmental features. Hence, the constraints imposed by the local conditions restrict the range of successful strategies by excluding species poorly adapted. In the present study, we compared the demographic strategies of fish caught in 47 estuaries of the North East Atlantic coast, aiming to determine the specific attributes of resident species and test for changes in trait associations along the environmental gradients. Eight demographic traits were considered to project our findings within a conceptual triangular model, composed on three endpoint strategies: (i) periodic (large size, long generation time, high fecundity); (ii) opportunistic (small size, short generation time, high reproductive effort); and (iii) equilibrium (low fecundity, large egg size, parental care). We demonstrated that various life history strategies co-exist in estuaries, but equilibrium species were scarce and restricted to euhaline open-water. Resident species form a specialised assemblage adapted to high spatiotemporal variability of estuarine conditions, i.e. opportunistic attributes associated with parental care. Even with these singular attributes, our findings revealed changes in distribution of resident species across the estuarine gradients linked to their life history traits. Among other patterns, the diversity of life history strategies significantly decreased from euhaline to oligohaline areas and along gradient of human disturbances. These trends were associated with a convergence of species traits toward short generation times, suggesting that long-lived species with late maturation are more severely impacted by disturbance and environmental stress. info:eu-repo/semantics/publishedVersion |
format |
Article in Journal/Newspaper |
author |
Teichert, Nils Pasquaud, Stéphanie Borja, Angel Chust, Guillem Uriarte, Ainhize Lepage, Mario |
author_facet |
Teichert, Nils Pasquaud, Stéphanie Borja, Angel Chust, Guillem Uriarte, Ainhize Lepage, Mario |
author_sort |
Teichert, Nils |
title |
Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries |
title_short |
Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries |
title_full |
Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries |
title_fullStr |
Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries |
title_full_unstemmed |
Living under stressful conditions: Fish life history strategies across environmental gradients in estuaries |
title_sort |
living under stressful conditions: fish life history strategies across environmental gradients in estuaries |
publisher |
Elsevier |
publishDate |
2020 |
url |
http://hdl.handle.net/10451/41191 https://doi.org/10.1016/j.ecss.2017.02.006 |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_relation |
https://www.sciencedirect.com/science/article/pii/S0272771417301348 0272-7714 http://hdl.handle.net/10451/41191 doi:10.1016/j.ecss.2017.02.006 |
op_rights |
restrictedAccess |
op_doi |
https://doi.org/10.1016/j.ecss.2017.02.006 |
container_title |
Estuarine, Coastal and Shelf Science |
container_volume |
188 |
container_start_page |
18 |
op_container_end_page |
26 |
_version_ |
1766139048479424512 |