Flow management to control excessive growth of Macrophytes - An assessment based on habitat suitability modeling

Detalhes bibliográficos
Autor(a) principal: Ochs, Konstantin
Data de Publicação: 2018
Outros Autores: Rivaes, Rui Pedro, Ferreira, Teresa, Egger, Gregory
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/15322
Resumo: Original Research
id RCAP_1676cd8101d4a1b8658a607fd7b8ad5c
oai_identifier_str oai:www.repository.utl.pt:10400.5/15322
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Flow management to control excessive growth of Macrophytes - An assessment based on habitat suitability modelingaquatic macrophyteshabitat suitability modelingflow regulationinvasive speciesMyriophyllum aquaticumIFIMOriginal ResearchMediterranean rivers in intensive agricultural watersheds usually display outgrowths of macrophytes – notably alien species – due to a combination of high concentrations of nutrients in the water runoff and low flows resulting from water abstraction for irrigation. Standard mechanical and chemical control is used to mitigate the problems associated with excessive growth of plant biomass: mainly less drainage capacity and higher flood risk. However, such control measures are cost and labor-intensive and do not present long-term efficiency. Although the high sensitivity of aquatic vegetation to instream hydraulic conditions is well known, management approaches based on flow management remain relatively unexplored. The aim of our study was therefore to apply physical habitat simulation techniques promoted by the Instream Flow Incremental Method (IFIM) to aquatic macrophytes – the first time it has been applied in this context – in order to model shifts in habitat suitability under different flow scenarios in the Sorraia river in central Portugal. We used this approach to test whether the risk of invasion and channel encroachment by nuisance species can be controlled by setting minimum annual flows. We used 960 randomly distributed survey points to analyze the habitat suitability for the most important aquatic species (including the invasive Brazilian milfoil Myriophyllum aquaticum, Sparganium erectum, and Potamogeton crispus) in regard to the physical parameters ‘flow velocity,’ ‘water depth,’ and ‘substrate size’. We chose the lowest discharge period of the year in order to assess the hydraulic conditions while disturbances were at a low-point, thus allowing aquatic vegetation establishment and subsistence. We then used the two-dimensional hydraulic River2D software to model the potential habitat availability for different flow conditions based on the site-specific habitat suitability index for each physical parameter and species. Our results show that the growth and distribution of macrophytes in the hydrologically stable vegetation period is primarily a function of the local physical instream condition. Using site-specific preference curves and a two-dimensional hydraulic model, it was possible to determine minimum annual flows that might prevent the excessive growth and channel encroachment caused by Myriophyllum aquaticumFrontiers in Plant ScienceRepositório da Universidade de LisboaOchs, KonstantinRivaes, Rui PedroFerreira, TeresaEgger, Gregory2018-05-07T13:08:32Z2018-032018-03-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/15322engOchs K, Rivaes RP, Ferreira T and Egger G (2018) Flow Management to Control Excessive Growth of Macrophytes – An Assessment Based on Habitat Suitability Modeling. Front. Plant Sci. 9:35610.3389/fpls.2018.00356info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:45:17Zoai:www.repository.utl.pt:10400.5/15322Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:01:00.877908Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Flow management to control excessive growth of Macrophytes - An assessment based on habitat suitability modeling
title Flow management to control excessive growth of Macrophytes - An assessment based on habitat suitability modeling
spellingShingle Flow management to control excessive growth of Macrophytes - An assessment based on habitat suitability modeling
Ochs, Konstantin
aquatic macrophytes
habitat suitability modeling
flow regulation
invasive species
Myriophyllum aquaticum
IFIM
title_short Flow management to control excessive growth of Macrophytes - An assessment based on habitat suitability modeling
title_full Flow management to control excessive growth of Macrophytes - An assessment based on habitat suitability modeling
title_fullStr Flow management to control excessive growth of Macrophytes - An assessment based on habitat suitability modeling
title_full_unstemmed Flow management to control excessive growth of Macrophytes - An assessment based on habitat suitability modeling
title_sort Flow management to control excessive growth of Macrophytes - An assessment based on habitat suitability modeling
author Ochs, Konstantin
author_facet Ochs, Konstantin
Rivaes, Rui Pedro
Ferreira, Teresa
Egger, Gregory
author_role author
author2 Rivaes, Rui Pedro
Ferreira, Teresa
Egger, Gregory
author2_role author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Ochs, Konstantin
Rivaes, Rui Pedro
Ferreira, Teresa
Egger, Gregory
dc.subject.por.fl_str_mv aquatic macrophytes
habitat suitability modeling
flow regulation
invasive species
Myriophyllum aquaticum
IFIM
topic aquatic macrophytes
habitat suitability modeling
flow regulation
invasive species
Myriophyllum aquaticum
IFIM
description Original Research
publishDate 2018
dc.date.none.fl_str_mv 2018-05-07T13:08:32Z
2018-03
2018-03-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/15322
url http://hdl.handle.net/10400.5/15322
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Ochs K, Rivaes RP, Ferreira T and Egger G (2018) Flow Management to Control Excessive Growth of Macrophytes – An Assessment Based on Habitat Suitability Modeling. Front. Plant Sci. 9:356
10.3389/fpls.2018.00356
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Frontiers in Plant Science
publisher.none.fl_str_mv Frontiers in Plant Science
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799131098901381120

Registros relacionados