Changing isotopic food webs of two economically important fish in mediterranean coastal lakes with different trophic status
Transitional waters are highly productive ecosystems, providing essential goods and services to the biosphere and human population. Human influence in coastal areas exposes these ecosystems to continuous internal and external disturbance. Nitrogen-loads can affect the composition of the resident com...
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Online Access: | http://hdl.handle.net/11573/1409721 https://doi.org/10.3390/app10082756 |
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ftunivromairis:oai:iris.uniroma1.it:11573/1409721 2024-02-11T09:55:28+01:00 Changing isotopic food webs of two economically important fish in mediterranean coastal lakes with different trophic status Sporta Caputi, Simona Careddu, Giulio Calizza, Edoardo Fiorentino, Federico Maccapan, Deborah Rossi, Loreto Costantini, Maria Letizia Sporta Caputi, Simona Careddu, Giulio Calizza, Edoardo Fiorentino, Federico Maccapan, Deborah Rossi, Loreto Costantini, Maria Letizia 2020 http://hdl.handle.net/11573/1409721 https://doi.org/10.3390/app10082756 eng eng MDPI place:Basel info:eu-repo/semantics/altIdentifier/wos/WOS:000533352100120 volume:10 issue:8 numberofpages:21 journal:APPLIED SCIENCES http://hdl.handle.net/11573/1409721 doi:10.3390/app10082756 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85084642193 info:eu-repo/semantics/openAccess Anguilla anguilla Diplodus annulari food web Mediterranean coastal lake nitrogen pollution stable isotope trophic relationships info:eu-repo/semantics/article 2020 ftunivromairis https://doi.org/10.3390/app10082756 2024-01-17T18:05:56Z Transitional waters are highly productive ecosystems, providing essential goods and services to the biosphere and human population. Human influence in coastal areas exposes these ecosystems to continuous internal and external disturbance. Nitrogen-loads can affect the composition of the resident community and the trophic relationships between and within species, including fish. Based on carbon (δ13C) and nitrogen (δ15N) stable isotope analyses of individuals, we explored the feeding behaviour of two ecologically and economically important omnivorous fish, the eel Anguilla anguilla and the seabream Diplodus annularis, in three neighbouring lakes characterised by different trophic conditions. We found that A. anguilla showed greater generalism in the eutrophic lake due to the increased contribution of basal resources and invertebrates to its diet. By contrast, the diet of D. annularis, which was mainly based on invertebrate species, became more specialised, focusing especially on polychaetes. Our results suggest that changes in macroinvertebrate and fish community composition, coupled with anthropogenic pressure, affect the trophic strategies of high trophic level consumers such as A. anguilla and D. annularis. Detailed food web descriptions based on the feeding choices of isotopic trophospecies (here Isotopic Trophic Units, ITUs) enable identification of the prey taxa crucial for the persistence of omnivorous fish stocks, thus providing useful information for their management and habitat conservation. Article in Journal/Newspaper Anguilla anguilla Sapienza Università di Roma: CINECA IRIS Applied Sciences 10 8 2756 |
institution |
Open Polar |
collection |
Sapienza Università di Roma: CINECA IRIS |
op_collection_id |
ftunivromairis |
language |
English |
topic |
Anguilla anguilla Diplodus annulari food web Mediterranean coastal lake nitrogen pollution stable isotope trophic relationships |
spellingShingle |
Anguilla anguilla Diplodus annulari food web Mediterranean coastal lake nitrogen pollution stable isotope trophic relationships Sporta Caputi, Simona Careddu, Giulio Calizza, Edoardo Fiorentino, Federico Maccapan, Deborah Rossi, Loreto Costantini, Maria Letizia Changing isotopic food webs of two economically important fish in mediterranean coastal lakes with different trophic status |
topic_facet |
Anguilla anguilla Diplodus annulari food web Mediterranean coastal lake nitrogen pollution stable isotope trophic relationships |
description |
Transitional waters are highly productive ecosystems, providing essential goods and services to the biosphere and human population. Human influence in coastal areas exposes these ecosystems to continuous internal and external disturbance. Nitrogen-loads can affect the composition of the resident community and the trophic relationships between and within species, including fish. Based on carbon (δ13C) and nitrogen (δ15N) stable isotope analyses of individuals, we explored the feeding behaviour of two ecologically and economically important omnivorous fish, the eel Anguilla anguilla and the seabream Diplodus annularis, in three neighbouring lakes characterised by different trophic conditions. We found that A. anguilla showed greater generalism in the eutrophic lake due to the increased contribution of basal resources and invertebrates to its diet. By contrast, the diet of D. annularis, which was mainly based on invertebrate species, became more specialised, focusing especially on polychaetes. Our results suggest that changes in macroinvertebrate and fish community composition, coupled with anthropogenic pressure, affect the trophic strategies of high trophic level consumers such as A. anguilla and D. annularis. Detailed food web descriptions based on the feeding choices of isotopic trophospecies (here Isotopic Trophic Units, ITUs) enable identification of the prey taxa crucial for the persistence of omnivorous fish stocks, thus providing useful information for their management and habitat conservation. |
author2 |
Sporta Caputi, Simona Careddu, Giulio Calizza, Edoardo Fiorentino, Federico Maccapan, Deborah Rossi, Loreto Costantini, Maria Letizia |
format |
Article in Journal/Newspaper |
author |
Sporta Caputi, Simona Careddu, Giulio Calizza, Edoardo Fiorentino, Federico Maccapan, Deborah Rossi, Loreto Costantini, Maria Letizia |
author_facet |
Sporta Caputi, Simona Careddu, Giulio Calizza, Edoardo Fiorentino, Federico Maccapan, Deborah Rossi, Loreto Costantini, Maria Letizia |
author_sort |
Sporta Caputi, Simona |
title |
Changing isotopic food webs of two economically important fish in mediterranean coastal lakes with different trophic status |
title_short |
Changing isotopic food webs of two economically important fish in mediterranean coastal lakes with different trophic status |
title_full |
Changing isotopic food webs of two economically important fish in mediterranean coastal lakes with different trophic status |
title_fullStr |
Changing isotopic food webs of two economically important fish in mediterranean coastal lakes with different trophic status |
title_full_unstemmed |
Changing isotopic food webs of two economically important fish in mediterranean coastal lakes with different trophic status |
title_sort |
changing isotopic food webs of two economically important fish in mediterranean coastal lakes with different trophic status |
publisher |
MDPI |
publishDate |
2020 |
url |
http://hdl.handle.net/11573/1409721 https://doi.org/10.3390/app10082756 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000533352100120 volume:10 issue:8 numberofpages:21 journal:APPLIED SCIENCES http://hdl.handle.net/11573/1409721 doi:10.3390/app10082756 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85084642193 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3390/app10082756 |
container_title |
Applied Sciences |
container_volume |
10 |
container_issue |
8 |
container_start_page |
2756 |
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1790596500639711232 |