Coastal dune vegetation of the Southern Pampas (Buenos Aires, Argentina) and its value for conservation

Vegetation structure and species composition of southern Pampas coastal dunes were studied to evaluate their significance for conservation. The vegetation was described in 41 plots of 100 m 2 along four transects perpendicular to the coast. The floristic dataset was classified by two-way indicator s...

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Autores principales:	Monserrat, A.L., Celsi, C.E., Fontana, S.L.
Formato:	JOUR
Materias:	Pampas phytosociology psamophytic associations bioindicator dune floristics geomorphological mapping habitat conservation shrub species diversity species richness transect vascular plant vegetation cover vegetation structure zonation Argentina Buenos Aires [Argentina] Adesmia Asteraceae Baccharis Calycera Cortaderia selloana Fabaceae Glycyrrhiza Hyalis argentea Imperata brasiliensis Neosparton Oenothera Oenothera mollissima Panicum Panicum urvilleanum Poa Poa lanuginosa Poaceae Senecio Tracheophyta Typha
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_07490208_v28_n1_p23_Monserrat
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	todo:paper_07490208_v28_n1_p23_Monserrat2023-10-03T15:39:09Z Coastal dune vegetation of the Southern Pampas (Buenos Aires, Argentina) and its value for conservation Monserrat, A.L. Celsi, C.E. Fontana, S.L. Pampas phytosociology psamophytic associations bioindicator dune floristics geomorphological mapping habitat conservation phytosociology shrub species diversity species richness transect vascular plant vegetation cover vegetation structure zonation Argentina Buenos Aires [Argentina] Pampas Adesmia Asteraceae Baccharis Calycera Cortaderia selloana Fabaceae Glycyrrhiza Hyalis argentea Imperata brasiliensis Neosparton Oenothera Oenothera mollissima Panicum Panicum urvilleanum Poa Poa lanuginosa Poaceae Senecio Tracheophyta Typha Vegetation structure and species composition of southern Pampas coastal dunes were studied to evaluate their significance for conservation. The vegetation was described in 41 plots of 100 m 2 along four transects perpendicular to the coast. The floristic dataset was classified by two-way indicator species analysis. Vegetation distribution patterns were analysed in relation to the geomorphology and environmental factors. Fifty-one taxa (19 families) of vascular plants were recorded, with Asteraceae, Poaceae, and Fabaceae being the most abundant. The main vegetation groups obtained from the classification are related to distinctive geomorphology. (1) Upper beach and active dunes are habitats with extreme conditions, characterized by species-poor associations with low vegetation cover; group dominated by few shrubs and gramines like Panicum urvilleanum, Calycera crassifolia, and Senecio bergii. (2) Fixed/semifixed dunes are habitats with more stable substrate, characterized by dense vegetation, high species richness, and woody life forms; group dominated by Poa lanuginosa, Hyalis argentea var. latisquama, Oenothera mollissima, and Glycyrrhiza astragalina. (3) Hygrophilous communities are mostly associated with dune slacks with high herbaceous vegetation cover; group largely dominated by Cortaderia selloana, Typha sp., and Imperata brasiliensis. Detrended correspondence analysis shows that the major floristic variation follows a gradient from the beach inland. Also, there is a clear zonation pattern strongly associated with geomorphologic heterogeneity. The occurrence of threatened species (e.g., Adesmia filipes, Neosparton ephedroides) and endemic taxa (S. bergii and Baccharis divaricata) plus the high habitat diversity and plant species richness confers to the area special value for conservation. The ecological role of dune vegetation is discussed in conservation and management context. © 2012, the Coastal Education & Research Foundation (CERF). Fil:Monserrat, A.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_07490208_v28_n1_p23_Monserrat
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Pampas phytosociology psamophytic associations bioindicator dune floristics geomorphological mapping habitat conservation phytosociology shrub species diversity species richness transect vascular plant vegetation cover vegetation structure zonation Argentina Buenos Aires [Argentina] Pampas Adesmia Asteraceae Baccharis Calycera Cortaderia selloana Fabaceae Glycyrrhiza Hyalis argentea Imperata brasiliensis Neosparton Oenothera Oenothera mollissima Panicum Panicum urvilleanum Poa Poa lanuginosa Poaceae Senecio Tracheophyta Typha
spellingShingle	Pampas phytosociology psamophytic associations bioindicator dune floristics geomorphological mapping habitat conservation phytosociology shrub species diversity species richness transect vascular plant vegetation cover vegetation structure zonation Argentina Buenos Aires [Argentina] Pampas Adesmia Asteraceae Baccharis Calycera Cortaderia selloana Fabaceae Glycyrrhiza Hyalis argentea Imperata brasiliensis Neosparton Oenothera Oenothera mollissima Panicum Panicum urvilleanum Poa Poa lanuginosa Poaceae Senecio Tracheophyta Typha Monserrat, A.L. Celsi, C.E. Fontana, S.L. Coastal dune vegetation of the Southern Pampas (Buenos Aires, Argentina) and its value for conservation
topic_facet	Pampas phytosociology psamophytic associations bioindicator dune floristics geomorphological mapping habitat conservation phytosociology shrub species diversity species richness transect vascular plant vegetation cover vegetation structure zonation Argentina Buenos Aires [Argentina] Pampas Adesmia Asteraceae Baccharis Calycera Cortaderia selloana Fabaceae Glycyrrhiza Hyalis argentea Imperata brasiliensis Neosparton Oenothera Oenothera mollissima Panicum Panicum urvilleanum Poa Poa lanuginosa Poaceae Senecio Tracheophyta Typha
description	Vegetation structure and species composition of southern Pampas coastal dunes were studied to evaluate their significance for conservation. The vegetation was described in 41 plots of 100 m 2 along four transects perpendicular to the coast. The floristic dataset was classified by two-way indicator species analysis. Vegetation distribution patterns were analysed in relation to the geomorphology and environmental factors. Fifty-one taxa (19 families) of vascular plants were recorded, with Asteraceae, Poaceae, and Fabaceae being the most abundant. The main vegetation groups obtained from the classification are related to distinctive geomorphology. (1) Upper beach and active dunes are habitats with extreme conditions, characterized by species-poor associations with low vegetation cover; group dominated by few shrubs and gramines like Panicum urvilleanum, Calycera crassifolia, and Senecio bergii. (2) Fixed/semifixed dunes are habitats with more stable substrate, characterized by dense vegetation, high species richness, and woody life forms; group dominated by Poa lanuginosa, Hyalis argentea var. latisquama, Oenothera mollissima, and Glycyrrhiza astragalina. (3) Hygrophilous communities are mostly associated with dune slacks with high herbaceous vegetation cover; group largely dominated by Cortaderia selloana, Typha sp., and Imperata brasiliensis. Detrended correspondence analysis shows that the major floristic variation follows a gradient from the beach inland. Also, there is a clear zonation pattern strongly associated with geomorphologic heterogeneity. The occurrence of threatened species (e.g., Adesmia filipes, Neosparton ephedroides) and endemic taxa (S. bergii and Baccharis divaricata) plus the high habitat diversity and plant species richness confers to the area special value for conservation. The ecological role of dune vegetation is discussed in conservation and management context. © 2012, the Coastal Education & Research Foundation (CERF).
format	JOUR
author	Monserrat, A.L. Celsi, C.E. Fontana, S.L.
author_facet	Monserrat, A.L. Celsi, C.E. Fontana, S.L.
author_sort	Monserrat, A.L.
title	Coastal dune vegetation of the Southern Pampas (Buenos Aires, Argentina) and its value for conservation
title_short	Coastal dune vegetation of the Southern Pampas (Buenos Aires, Argentina) and its value for conservation
title_full	Coastal dune vegetation of the Southern Pampas (Buenos Aires, Argentina) and its value for conservation
title_fullStr	Coastal dune vegetation of the Southern Pampas (Buenos Aires, Argentina) and its value for conservation
title_full_unstemmed	Coastal dune vegetation of the Southern Pampas (Buenos Aires, Argentina) and its value for conservation
title_sort	coastal dune vegetation of the southern pampas (buenos aires, argentina) and its value for conservation
url	http://hdl.handle.net/20.500.12110/paper_07490208_v28_n1_p23_Monserrat
work_keys_str_mv	AT monserratal coastaldunevegetationofthesouthernpampasbuenosairesargentinaanditsvalueforconservation AT celsice coastaldunevegetationofthesouthernpampasbuenosairesargentinaanditsvalueforconservation AT fontanasl coastaldunevegetationofthesouthernpampasbuenosairesargentinaanditsvalueforconservation
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Coastal dune vegetation of the Southern Pampas (Buenos Aires, Argentina) and its value for conservation

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