Changes in the juvenile fish assemblage of a Mediterranean shallow Posidonia oceanica seagrass nursery area after half century
The within-year dynamics of the juvenile fish community over a shallow nursery seagrass-dominated habitat (Posidonia oceanica) in a Mediterranean Bay was compared between two surveys separated 50 years (1960 and 2012-2013). A nocturnal survey over depths ranging from 2 to 10 m over patched seagrass...
Published in: | Mediterranean Marine Science |
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Language: | English |
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Hellenic Centre for Marine Research
2019
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Online Access: | https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/19510 https://doi.org/10.12681/mms.19510 |
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ftektojs:oai:ejournals.epublishing.ekt.gr:article/19510 2023-05-15T13:28:10+02:00 Changes in the juvenile fish assemblage of a Mediterranean shallow Posidonia oceanica seagrass nursery area after half century DÍAZ-GIL, CARLOS GRAU, AMALIA GRAU, ANTONIO MARIA PALMER, MIQUEL CABRERA, REMEDIOS JORDÀ, GABRIEL CATALÁN, IGNACIO ALBERTO Ministerio de Economía y Empresa (MINECO) Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA) Mediterranean Sea 50 years fish juveniles 2019-11-11 application/pdf https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/19510 https://doi.org/10.12681/mms.19510 eng eng Hellenic Centre for Marine Research https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/19510/18763 https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/19510/18764 https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/downloadSuppFile/19510/2892 https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/downloadSuppFile/19510/2893 https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/downloadSuppFile/19510/2894 https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/19510 doi:10.12681/mms.19510 Copyright (c) 2019 Mediterranean Marine Science Mediterranean Marine Science; Vol 20, No 3 (2019); 603-615 1791-6763 1108-393X Marine Biology Ecology Fisheries Science Seagrass meadow nursery habitat management juvenile fish assemblages. info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion comparative fish communities 2019 ftektojs https://doi.org/10.12681/mms.19510 2022-01-09T20:25:30Z The within-year dynamics of the juvenile fish community over a shallow nursery seagrass-dominated habitat (Posidonia oceanica) in a Mediterranean Bay was compared between two surveys separated 50 years (1960 and 2012-2013). A nocturnal survey over depths ranging from 2 to 10 m over patched seagrass meadows was conducted for one year (2012-2013) through 72 epibenthic tows spread fortnightly in 4 close-by stations, mimicking a survey, conducted in 1960, in terms of sampling intensity, sampling zone, temporal coverage and sampling gear. Although a large proportion of fish species was similar among surveys, remarkable and statistically significant differences were detected. A striking feature was that one of the most common and abundant sparidae species nowadays, Diplodus annularis, did not appear in 1960. Other strong differences included the disappearance of European eel Anguilla anguilla in the recent survey. Further, one of the most valuable species for artisanal fisheries in the area, the black scorpionfish Scorpaena porcus, was almost 10 times less abundant in 1960. A finer-scale study of the 2012-2013 survey allowed a quantitative analysis between species composition and potential environmental drivers through Redundancy Analysis that described well the current pattern of time-dependent recruitment pulses in nearshore meadows from the area through a year, with marked effects of surface temperature and photoperiod. The comparison between surveys suggests that some strong differences between surveys are unlikely attributable to interannual stochasticity in recruitment or environmental variability but may be related with i) unaccounted for habitat transformation and/or ii) the strong decrease of juvenile fishing mortality in this shallow nursery area since the enforcement of bans on littoral epibenthic trawling activities characteristic of this area. Article in Journal/Newspaper Anguilla anguilla European eel EKT ePublishing (National Documentation Centre, Greece) Mediterranean Marine Science 20 3 603 |
institution |
Open Polar |
collection |
EKT ePublishing (National Documentation Centre, Greece) |
op_collection_id |
ftektojs |
language |
English |
topic |
Marine Biology Ecology Fisheries Science Seagrass meadow nursery habitat management juvenile fish assemblages. |
spellingShingle |
Marine Biology Ecology Fisheries Science Seagrass meadow nursery habitat management juvenile fish assemblages. DÍAZ-GIL, CARLOS GRAU, AMALIA GRAU, ANTONIO MARIA PALMER, MIQUEL CABRERA, REMEDIOS JORDÀ, GABRIEL CATALÁN, IGNACIO ALBERTO Changes in the juvenile fish assemblage of a Mediterranean shallow Posidonia oceanica seagrass nursery area after half century |
topic_facet |
Marine Biology Ecology Fisheries Science Seagrass meadow nursery habitat management juvenile fish assemblages. |
description |
The within-year dynamics of the juvenile fish community over a shallow nursery seagrass-dominated habitat (Posidonia oceanica) in a Mediterranean Bay was compared between two surveys separated 50 years (1960 and 2012-2013). A nocturnal survey over depths ranging from 2 to 10 m over patched seagrass meadows was conducted for one year (2012-2013) through 72 epibenthic tows spread fortnightly in 4 close-by stations, mimicking a survey, conducted in 1960, in terms of sampling intensity, sampling zone, temporal coverage and sampling gear. Although a large proportion of fish species was similar among surveys, remarkable and statistically significant differences were detected. A striking feature was that one of the most common and abundant sparidae species nowadays, Diplodus annularis, did not appear in 1960. Other strong differences included the disappearance of European eel Anguilla anguilla in the recent survey. Further, one of the most valuable species for artisanal fisheries in the area, the black scorpionfish Scorpaena porcus, was almost 10 times less abundant in 1960. A finer-scale study of the 2012-2013 survey allowed a quantitative analysis between species composition and potential environmental drivers through Redundancy Analysis that described well the current pattern of time-dependent recruitment pulses in nearshore meadows from the area through a year, with marked effects of surface temperature and photoperiod. The comparison between surveys suggests that some strong differences between surveys are unlikely attributable to interannual stochasticity in recruitment or environmental variability but may be related with i) unaccounted for habitat transformation and/or ii) the strong decrease of juvenile fishing mortality in this shallow nursery area since the enforcement of bans on littoral epibenthic trawling activities characteristic of this area. |
author2 |
Ministerio de Economía y Empresa (MINECO) Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA) |
format |
Article in Journal/Newspaper |
author |
DÍAZ-GIL, CARLOS GRAU, AMALIA GRAU, ANTONIO MARIA PALMER, MIQUEL CABRERA, REMEDIOS JORDÀ, GABRIEL CATALÁN, IGNACIO ALBERTO |
author_facet |
DÍAZ-GIL, CARLOS GRAU, AMALIA GRAU, ANTONIO MARIA PALMER, MIQUEL CABRERA, REMEDIOS JORDÀ, GABRIEL CATALÁN, IGNACIO ALBERTO |
author_sort |
DÍAZ-GIL, CARLOS |
title |
Changes in the juvenile fish assemblage of a Mediterranean shallow Posidonia oceanica seagrass nursery area after half century |
title_short |
Changes in the juvenile fish assemblage of a Mediterranean shallow Posidonia oceanica seagrass nursery area after half century |
title_full |
Changes in the juvenile fish assemblage of a Mediterranean shallow Posidonia oceanica seagrass nursery area after half century |
title_fullStr |
Changes in the juvenile fish assemblage of a Mediterranean shallow Posidonia oceanica seagrass nursery area after half century |
title_full_unstemmed |
Changes in the juvenile fish assemblage of a Mediterranean shallow Posidonia oceanica seagrass nursery area after half century |
title_sort |
changes in the juvenile fish assemblage of a mediterranean shallow posidonia oceanica seagrass nursery area after half century |
publisher |
Hellenic Centre for Marine Research |
publishDate |
2019 |
url |
https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/19510 https://doi.org/10.12681/mms.19510 |
op_coverage |
Mediterranean Sea 50 years fish juveniles |
genre |
Anguilla anguilla European eel |
genre_facet |
Anguilla anguilla European eel |
op_source |
Mediterranean Marine Science; Vol 20, No 3 (2019); 603-615 1791-6763 1108-393X |
op_relation |
https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/19510/18763 https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/19510/18764 https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/downloadSuppFile/19510/2892 https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/downloadSuppFile/19510/2893 https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/downloadSuppFile/19510/2894 https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/19510 doi:10.12681/mms.19510 |
op_rights |
Copyright (c) 2019 Mediterranean Marine Science |
op_doi |
https://doi.org/10.12681/mms.19510 |
container_title |
Mediterranean Marine Science |
container_volume |
20 |
container_issue |
3 |
container_start_page |
603 |
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1766402586282295296 |