Functional diversity of macrophyte communities within and between Pyrenean Lakes

12 páginas, 6 figuras, 6 tablas.

Detalles Bibliográficos
Autores: Gacia, Esperança, Chappuis, Eglantine, Lumbreras, Ana, Riera, Joan L., Ballesteros, Enric
Tipo de recurso: artículo
Fecha de publicación:2009
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/57160
Acceso en línea:http://hdl.handle.net/10261/57160
Access Level:acceso abierto
Palabra clave:Nutrients
Pyrenees
Macrophytes
Soft-water lakes
Sediment redox
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spelling Functional diversity of macrophyte communities within and between Pyrenean LakesGacia, EsperançaChappuis, EglantineLumbreras, AnaRiera, Joan L.Ballesteros, EnricNutrientsPyreneesMacrophytesSoft-water lakesSediment redox12 páginas, 6 figuras, 6 tablas.Submersed vegetation is a common feature in about 70% Pyrenean high mountain (>1500 m a.s.l.) lakes. Isoetids and soft-water elodeids are common elements of this underwater flora and can form distinct vegetation units (i.e. patches of vegetation dominated by different species) within complex mosaics of vegetation in shallow waters (<7 m). Since isoetids exert a strong influence on sediment biogeochemistry due to high radial oxygen loss, we examined the small scale characteristics of the lake environment (water and sediment) associated to vegetation patches in order to ascertain potential functional differences among them. To do so, we characterised the species composition and biomass of the main vegetation units from 11 lakes, defined plant communities based on biomass data, and then related each community with sediment properties (redox and dissolved nutrient concentration in the pore water) and water nutrient concentration within plant canopy. We also characterised lake water and sediment in areas without vegetation as a reference. A total of twenty-one vegetation units were identified, ranging from one to five per lake. A cluster analysis on biomass species composition suggested seven different macrophyte communities that were named after the most dominant species: Nitella sp., Potamogeton praelongus, Myriophyllum alterniflorum, Sparganium angustifolium, Isoetes echinospora, Isoetes lacustris and Carex rostrata. Coupling between macrophyte communities and their immediate environment (overlying water and sediment) was manifested mainly as variation in sediment redox conditions and the dominant form of inorganic nitrogen in pore-water. These effects depended on the specific composition of the community, and on the allocation between above- and belowground biomass, and could be predicted with a model relating the average and standard deviation of sediment redox potential from 0 down to -20 cm, across macrophyte communities. Differences in pore-water total dissolved phosphorus were related to the trophic state of the lakes. There was no correlation between sediment and water column dissolved nutrients. However, nitrate concentrations tended to be lower in the water overlaying isoetid communities, in apparent contradiction to the patterns of dissolved nitrates in the pore-water. These tendencies were robust even when comparing the water overlaying communities within the same lake, thus pointing towards a potential effect of isoetids in reducing dissolved nitrogen in the lakes.This study was funded by the Red de Parques Nacionales of the Spanish Ministry of the Environment (ref. 118/2003).Peer reviewedIstituto italiano di idrobiologia (Pallanza, Italia)201220122009info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/57160reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://limnol.pagepress.org/index.php/jlimnol/article/view/jlimnol.2009.25/154info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/571602026-05-22T06:33:51Z
dc.title.none.fl_str_mv Functional diversity of macrophyte communities within and between Pyrenean Lakes
title Functional diversity of macrophyte communities within and between Pyrenean Lakes
spellingShingle Functional diversity of macrophyte communities within and between Pyrenean Lakes
Gacia, Esperança
Nutrients
Pyrenees
Macrophytes
Soft-water lakes
Sediment redox
title_short Functional diversity of macrophyte communities within and between Pyrenean Lakes
title_full Functional diversity of macrophyte communities within and between Pyrenean Lakes
title_fullStr Functional diversity of macrophyte communities within and between Pyrenean Lakes
title_full_unstemmed Functional diversity of macrophyte communities within and between Pyrenean Lakes
title_sort Functional diversity of macrophyte communities within and between Pyrenean Lakes
dc.creator.none.fl_str_mv Gacia, Esperança
Chappuis, Eglantine
Lumbreras, Ana
Riera, Joan L.
Ballesteros, Enric
author Gacia, Esperança
author_facet Gacia, Esperança
Chappuis, Eglantine
Lumbreras, Ana
Riera, Joan L.
Ballesteros, Enric
author_role author
author2 Chappuis, Eglantine
Lumbreras, Ana
Riera, Joan L.
Ballesteros, Enric
author2_role author
author
author
author
dc.subject.none.fl_str_mv Nutrients
Pyrenees
Macrophytes
Soft-water lakes
Sediment redox
topic Nutrients
Pyrenees
Macrophytes
Soft-water lakes
Sediment redox
description 12 páginas, 6 figuras, 6 tablas.
publishDate 2009
dc.date.none.fl_str_mv 2009
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/57160
url http://hdl.handle.net/10261/57160
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://limnol.pagepress.org/index.php/jlimnol/article/view/jlimnol.2009.25/154
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Istituto italiano di idrobiologia (Pallanza, Italia)
publisher.none.fl_str_mv Istituto italiano di idrobiologia (Pallanza, Italia)
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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