Non-native Minnows Threaten Quillwort Populations in High Mountain Shallow Lakes

Este artículo contiene 11 páginas, 8 figuras, 5 tablas.

Detalles Bibliográficos
Autores: Gacia, Esperança, Buchaca, Teresa, Bernal-Mendoza, Nayeli, Sabas, Ibor, Ballesteros, Enric, Ventura, Marc
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/162659
Acceso en línea:http://hdl.handle.net/10261/162659
Access Level:acceso abierto
Palabra clave:Algae
Epiphytes
Minnows
Quillworts
Lakes
Invasions
Eutrophication
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spelling Non-native Minnows Threaten Quillwort Populations in High Mountain Shallow LakesGacia, EsperançaBuchaca, TeresaBernal-Mendoza, NayeliSabas, IborBallesteros, EnricVentura, MarcAlgaeEpiphytesMinnowsQuillwortsLakesInvasionsEutrophicationEste artículo contiene 11 páginas, 8 figuras, 5 tablas.Submersed aquatic plants are a key component of shallow, clear water lakes contributing to primary production and water quality. High mountain lakes are naturally fishless although invasive trout and most recently minnows have been introduced causing a major impact on fauna richness. The Pyrenean high mountain range has preserved soft-water oligotrophic boreal isoetids in their southern limit of distribution but the recent fish introduction is a potential factor of stress that needs to be addressed. We here work under the hypothesis that due to contrasting ecological features, trout will not be heavily affecting quillwort populations while minnows will have a stronger effect on zooplankton and zoobenthos that will promote algal growth and reduce light availability for the underwater meadows. Ten Pyrenean shallow lakes representative of three scenarios -fishless, with trout and with minnows-, were sampled for meadow structure, water column and benthic environment characterization in mid-summer 2015 and 2016. Quillwort biomass allocation (above vs. belowground), epiphytic load, and composition of the algal community (abundant cyanobacteria) differed in the presence of minnows. In trout lakes biomass allocation and epiphytic load were average and the algal community composed by chlorophytes and diatoms as in fishless lakes. Biomass ratio was close to thresholds of negative buoyancy in minnow lakes indicating that meadows were at risk of uprooting and consequent de-vegetation. Total and soluble carbohydrates were lower and the sporangia contained significantly less reserves to constrain growth and expansion in the presence of minnows. Lake scenarios were coupled to physicochemical differences with low light, high phosphorus and Chl-a (mesotrophia) in minnow lakes, while trout and fishless lakes remained oligotrophic. This is the first study assessing the impact of non-native fish on soft-water isoetids from mountain lakes and shows that minnows are a major threat to quillworts. The impaired light environment (from epiphytic algal overgrow and water column Chl-a) entails consequent regression (i.e., no recruitment) and de-vegetation (uprooting) of themeadows. Since soft-water oligotrophic mountain lakes are protected under the Habitats Directive, some action needs to be urgently implemented not only to preserve quillworts but to the overall ecological integrity of the lakes.This work was funded by the European Commission LIFE+ project LimnoPirineus (LIFE13 NAT/ES/001210), EU H2020 eLTER ref. 999452014-EAA, and by Grup de Recerca de Canvis Ambientals GECA (SGR-DGR), Generalitat de Catalunya. SGR 1249. 2017-2020.Peer reviewedFrontiers MediaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201820182018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/162659reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.3389/fpls.2018.00329Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1626592026-05-22T06:33:51Z
dc.title.none.fl_str_mv Non-native Minnows Threaten Quillwort Populations in High Mountain Shallow Lakes
title Non-native Minnows Threaten Quillwort Populations in High Mountain Shallow Lakes
spellingShingle Non-native Minnows Threaten Quillwort Populations in High Mountain Shallow Lakes
Gacia, Esperança
Algae
Epiphytes
Minnows
Quillworts
Lakes
Invasions
Eutrophication
title_short Non-native Minnows Threaten Quillwort Populations in High Mountain Shallow Lakes
title_full Non-native Minnows Threaten Quillwort Populations in High Mountain Shallow Lakes
title_fullStr Non-native Minnows Threaten Quillwort Populations in High Mountain Shallow Lakes
title_full_unstemmed Non-native Minnows Threaten Quillwort Populations in High Mountain Shallow Lakes
title_sort Non-native Minnows Threaten Quillwort Populations in High Mountain Shallow Lakes
dc.creator.none.fl_str_mv Gacia, Esperança
Buchaca, Teresa
Bernal-Mendoza, Nayeli
Sabas, Ibor
Ballesteros, Enric
Ventura, Marc
author Gacia, Esperança
author_facet Gacia, Esperança
Buchaca, Teresa
Bernal-Mendoza, Nayeli
Sabas, Ibor
Ballesteros, Enric
Ventura, Marc
author_role author
author2 Buchaca, Teresa
Bernal-Mendoza, Nayeli
Sabas, Ibor
Ballesteros, Enric
Ventura, Marc
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Algae
Epiphytes
Minnows
Quillworts
Lakes
Invasions
Eutrophication
topic Algae
Epiphytes
Minnows
Quillworts
Lakes
Invasions
Eutrophication
description Este artículo contiene 11 páginas, 8 figuras, 5 tablas.
publishDate 2018
dc.date.none.fl_str_mv 2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/162659
url http://hdl.handle.net/10261/162659
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.3389/fpls.2018.00329
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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