Ecosystem-level effects of re-oligotrophication and N:P imbalances in rivers and estuaries on a global scale

ABSTRACT: Trends and ecological consequences of phosphorus (P) decline and increasing nitrogen (N) to phosphorus (N:P) ratios in rivers and estuaries are reviewed and discussed. Results suggest that re-oligotrophication is a dominant trend in rivers and estuaries of high-income countries in the last...

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Autores: Ibáñez, Carles, Caiola, Nuno, Barquín Ortiz, José|||0000-0003-1897-2636, Belmar Diaz, Oscar, Benito-Granell, Xavier, Casals, Frederic, Fennessy, Siobhan, Hughes, Jocelyn, Palmer, Margaret, Peñuelas, Josep, Romero, Estela, Sardans, Jordi, Williams, Michael
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/28058
Acceso en línea:https://hdl.handle.net/10902/28058
Access Level:acceso abierto
Palabra clave:Cascading effects
Chlorophyll
Ecosystem shift
Oligotrophication
Phosphorus
Primary producers
Running waters
Stoichiometry
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spelling Ecosystem-level effects of re-oligotrophication and N:P imbalances in rivers and estuaries on a global scaleIbáñez, CarlesCaiola, NunoBarquín Ortiz, José|||0000-0003-1897-2636Belmar Diaz, OscarBenito-Granell, XavierCasals, FredericFennessy, SiobhanHughes, JocelynPalmer, MargaretPeñuelas, JosepRomero, EstelaSardans, JordiWilliams, MichaelCascading effectsChlorophyllEcosystem shiftOligotrophicationPhosphorusPrimary producersRunning watersStoichiometryABSTRACT: Trends and ecological consequences of phosphorus (P) decline and increasing nitrogen (N) to phosphorus (N:P) ratios in rivers and estuaries are reviewed and discussed. Results suggest that re-oligotrophication is a dominant trend in rivers and estuaries of high-income countries in the last two-three decades, while in low-income countries widespread eutrophication occurs. The decline in P is well documented in hundreds of rivers of United States and the European Union, but the biotic response of rivers and estuaries besides hytoplankton decline such as trends in phytoplankton composition, changes in primary production, ecosystem shifts, cascading effects, changes in ecosystem metabolism, etc., have not been sufficiently monitored and investigated, neither the effects of N:P imbalance. N:P imbalance has significant ecological effects that need to be further investigated. There is a growing number of cases in which phytoplankton biomass have been shown to decrease due to re-oligotrophication, but the potential regime shift from phytoplankton to macrophyte dominance described in shallow lakes has been documented only in a few rivers and estuaries yet. The main reasons why regime shifts are rarely described in rivers and estuaries are, from one hand the scarcity of data on macrophyte cover trends, and from the otherhand physical factors such as peak flows or high turbidity that could prevent a general spread of submerged macrophytes as observed in shallow lakes. Moreover, re-oligotrophication effects on rivers may be different compared to lakes (e.g., lower dominance of macrophytes) or estuaries (e.g., limitation of primary production by N instead of P) or may be dependent on river/estuary type. We conclude that river and estuary re-oligotrophication effects are complex, diverse and still little known, and in some cases are equivalent to those described in shallow lakes, but the regime shift is more likely to occur in mid to high-order rivers and shallow estuaries.This work was supported by a grant from the U.S. National Science Foundation (#DBI-1639145) to the National Socio-Environmental Synthesis Center (Rivershift Project). The work was also financially supported by the Catalan Government through the funding grant ACCIÓ-Eurecat (Project AquaSCI-2022).Blackwell ScienceUniversidad de Cantabria20232023-03-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttps://hdl.handle.net/10902/28058Global Change Biology, 2023, 29(5), 1248-1266reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/280582026-06-02T12:39:31Z
dc.title.none.fl_str_mv Ecosystem-level effects of re-oligotrophication and N:P imbalances in rivers and estuaries on a global scale
title Ecosystem-level effects of re-oligotrophication and N:P imbalances in rivers and estuaries on a global scale
spellingShingle Ecosystem-level effects of re-oligotrophication and N:P imbalances in rivers and estuaries on a global scale
Ibáñez, Carles
Cascading effects
Chlorophyll
Ecosystem shift
Oligotrophication
Phosphorus
Primary producers
Running waters
Stoichiometry
title_short Ecosystem-level effects of re-oligotrophication and N:P imbalances in rivers and estuaries on a global scale
title_full Ecosystem-level effects of re-oligotrophication and N:P imbalances in rivers and estuaries on a global scale
title_fullStr Ecosystem-level effects of re-oligotrophication and N:P imbalances in rivers and estuaries on a global scale
title_full_unstemmed Ecosystem-level effects of re-oligotrophication and N:P imbalances in rivers and estuaries on a global scale
title_sort Ecosystem-level effects of re-oligotrophication and N:P imbalances in rivers and estuaries on a global scale
dc.creator.none.fl_str_mv Ibáñez, Carles
Caiola, Nuno
Barquín Ortiz, José|||0000-0003-1897-2636
Belmar Diaz, Oscar
Benito-Granell, Xavier
Casals, Frederic
Fennessy, Siobhan
Hughes, Jocelyn
Palmer, Margaret
Peñuelas, Josep
Romero, Estela
Sardans, Jordi
Williams, Michael
author Ibáñez, Carles
author_facet Ibáñez, Carles
Caiola, Nuno
Barquín Ortiz, José|||0000-0003-1897-2636
Belmar Diaz, Oscar
Benito-Granell, Xavier
Casals, Frederic
Fennessy, Siobhan
Hughes, Jocelyn
Palmer, Margaret
Peñuelas, Josep
Romero, Estela
Sardans, Jordi
Williams, Michael
author_role author
author2 Caiola, Nuno
Barquín Ortiz, José|||0000-0003-1897-2636
Belmar Diaz, Oscar
Benito-Granell, Xavier
Casals, Frederic
Fennessy, Siobhan
Hughes, Jocelyn
Palmer, Margaret
Peñuelas, Josep
Romero, Estela
Sardans, Jordi
Williams, Michael
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad de Cantabria
dc.subject.none.fl_str_mv Cascading effects
Chlorophyll
Ecosystem shift
Oligotrophication
Phosphorus
Primary producers
Running waters
Stoichiometry
topic Cascading effects
Chlorophyll
Ecosystem shift
Oligotrophication
Phosphorus
Primary producers
Running waters
Stoichiometry
description ABSTRACT: Trends and ecological consequences of phosphorus (P) decline and increasing nitrogen (N) to phosphorus (N:P) ratios in rivers and estuaries are reviewed and discussed. Results suggest that re-oligotrophication is a dominant trend in rivers and estuaries of high-income countries in the last two-three decades, while in low-income countries widespread eutrophication occurs. The decline in P is well documented in hundreds of rivers of United States and the European Union, but the biotic response of rivers and estuaries besides hytoplankton decline such as trends in phytoplankton composition, changes in primary production, ecosystem shifts, cascading effects, changes in ecosystem metabolism, etc., have not been sufficiently monitored and investigated, neither the effects of N:P imbalance. N:P imbalance has significant ecological effects that need to be further investigated. There is a growing number of cases in which phytoplankton biomass have been shown to decrease due to re-oligotrophication, but the potential regime shift from phytoplankton to macrophyte dominance described in shallow lakes has been documented only in a few rivers and estuaries yet. The main reasons why regime shifts are rarely described in rivers and estuaries are, from one hand the scarcity of data on macrophyte cover trends, and from the otherhand physical factors such as peak flows or high turbidity that could prevent a general spread of submerged macrophytes as observed in shallow lakes. Moreover, re-oligotrophication effects on rivers may be different compared to lakes (e.g., lower dominance of macrophytes) or estuaries (e.g., limitation of primary production by N instead of P) or may be dependent on river/estuary type. We conclude that river and estuary re-oligotrophication effects are complex, diverse and still little known, and in some cases are equivalent to those described in shallow lakes, but the regime shift is more likely to occur in mid to high-order rivers and shallow estuaries.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-03-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10902/28058
url https://hdl.handle.net/10902/28058
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Blackwell Science
publisher.none.fl_str_mv Blackwell Science
dc.source.none.fl_str_mv Global Change Biology, 2023, 29(5), 1248-1266
reponame:UCrea Repositorio Abierto de la Universidad de Cantabria
instname:Universidad de Cantabria (UC)
instname_str Universidad de Cantabria (UC)
reponame_str UCrea Repositorio Abierto de la Universidad de Cantabria
collection UCrea Repositorio Abierto de la Universidad de Cantabria
repository.name.fl_str_mv
repository.mail.fl_str_mv
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