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dc.contributor.author
Schneider, Berenice
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dc.contributor.author
Cunha, E. R.
dc.contributor.author
Marchese Garello, Mercedes Rosa
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dc.contributor.author
Thomaz, Sidinei Magela
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dc.date.available
2018-03-05T20:07:46Z
dc.date.issued
2015-02
dc.identifier.citation
Schneider, Berenice; Cunha, E. R.; Marchese Garello, Mercedes Rosa; Thomaz, Sidinei Magela; Explanatory variables associated with diversity and composition of aquatic macrophytes in a large subtropical river floodplain; Elsevier Science; Aquatic Botany; 121; 2-2015; 67-75
dc.identifier.issn
0304-3770
dc.identifier.uri
http://hdl.handle.net/11336/37895
dc.description.abstract
The structure of aquatic macrophyte assemblages can be affected by myriad factors, including physical, chemical and morphometric characteristics. We describe the patterns of plant species diversity and composition and vegetation height in aquatic ecosystems and their potential determinants at a regional scale in the Middle Paraná River floodplain. Sampling was conducted in twenty-three water bodies, including secondary channels, connected lakes and disconnected lakes. We compared the macrophyte species richness, composition and vegetation height in water bodies with different degrees of connectivity with the river and assessed the most important abiotic explanatory variables (morphometric, physical and chemical) associated with these assemblage attributes. Species accumulation curves showed that species richness did not differ between water bodies with different degrees of connectivity, although it tended to be lowest in secondary channels. Species richness was specifically associated with depth, conductivity, percent of solar radiation reaching the bottom and nitrate. Macrophyte assemblage composition was related primarily to the degree of connectivity, as rare species mostly occurred in disconnected lakes. Composition was also related to the degree of wind exposure (fetch), distance to shoreline and depth. Finally, vegetation height (a surrogate for biomass) was associated with the ammonium and sediment organic matter. Thus, a combination of morphometric and abiotic factors explained species richness, while degree of connectivity and morphometry explained assemblage composition. Vegetation height was explained by nutrients. These results suggest that a single set of variables is not sufficient to explain different aspects of macrophyte assemblages.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Aquatic Plant
dc.subject
Connectivity
dc.subject
South America
dc.subject
Species Composition
dc.subject
Wetland
dc.subject.classification
Otras Ciencias Biológicas
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Explanatory variables associated with diversity and composition of aquatic macrophytes in a large subtropical river floodplain
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-02T14:08:19Z
dc.journal.volume
121
dc.journal.pagination
67-75
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Schneider, Berenice. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
dc.description.fil
Fil: Cunha, E. R.. Universidade Estadual de Maringa; Brasil
dc.description.fil
Fil: Marchese Garello, Mercedes Rosa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
dc.description.fil
Fil: Thomaz, Sidinei Magela. Universidade Estadual de Maringa; Brasil
dc.journal.title
Aquatic Botany
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.aquabot.2014.11.003
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0304377014001855
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