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Abstract:

We investigated the temporal and spatial changes in the floristic composition and abundance in sand dunes along a coastal strip in the province of Buenos Aires (Argentina). Firstly, we analysed changes over a span of 70 years, comparing 41 of our own inventories carried out in 14 beach resorts in 2005-2006 with 18 inventories made in the first half of the XXth century (1930-1940) in the same study area. We grouped sampled plots into four categories for comparison, taking into account the time period (1930-1940 or 2005-2006) and location at each end of the surveyed coastal strip in the northern or southern 'tourist' sectors. Secondly, we analysed the effect of afforestation with exotic trees on extant sand dune vegetation for the period 2005-2006. A total of 74 plant inventories were carried out in afforested and natural dunes at the same resorts. In both comparisons we contrasted plant richness, percentage plant cover, similarity and diversity. A cluster analysis was used to classify categories taking into account plant abundance and composition. Significant differences in total diversity were observed between sampling years, suggesting an increase in diversity at the present time due to urbanization and recreation related activities. Nevertheless, no single exotic plant species was clearly dominant across the sampled sites, suggesting that these coastal areas are, up to now, resistant to alien invasion. Diversity indexes discriminated by plant groups indicating different habitat conditions and exotics were shown to be more sensitive to existing changes than to total richness and cover. © 2011 Springer Science+Business Media B.V.

Registro:

Documento: Artículo
Título:Temporal and spatial changes in plant dune diversity in urban resorts
Autor:Faggi, A.; Dadon, J.
Filiación:CONICET, Museo Argentino de Ciencias Naturales, A.Gallardo 470, Buenos Aires, Argentina
CONICET, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina
Palabras clave:Afforestation; Argentina; Atlantic coast; Urbanization; Vegetation cover; afforestation; biodiversity; cluster analysis; coastal zone; dune; habitat quality; plant; species diversity; urban area; urbanization; vegetation cover; vegetation dynamics; Argentina; Atlantic Coast [South America]; Buenos Aires [Argentina]
Año:2011
Volumen:15
Número:4
Página de inicio:585
Página de fin:594
DOI: http://dx.doi.org/10.1007/s11852-011-0148-1
Título revista:Journal of Coastal Conservation
Título revista abreviado:J. Coast. Conserv.
ISSN:14000350
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14000350_v15_n4_p585_Faggi

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Citas:

---------- APA ----------
Faggi, A. & Dadon, J. (2011) . Temporal and spatial changes in plant dune diversity in urban resorts. Journal of Coastal Conservation, 15(4), 585-594.
http://dx.doi.org/10.1007/s11852-011-0148-1
---------- CHICAGO ----------
Faggi, A., Dadon, J. "Temporal and spatial changes in plant dune diversity in urban resorts" . Journal of Coastal Conservation 15, no. 4 (2011) : 585-594.
http://dx.doi.org/10.1007/s11852-011-0148-1
---------- MLA ----------
Faggi, A., Dadon, J. "Temporal and spatial changes in plant dune diversity in urban resorts" . Journal of Coastal Conservation, vol. 15, no. 4, 2011, pp. 585-594.
http://dx.doi.org/10.1007/s11852-011-0148-1
---------- VANCOUVER ----------
Faggi, A., Dadon, J. Temporal and spatial changes in plant dune diversity in urban resorts. J. Coast. Conserv. 2011;15(4):585-594.
http://dx.doi.org/10.1007/s11852-011-0148-1