Temporal and spatial changes in plant dune diversity in urban resorts
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 20...
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2011
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14000350_v15_n4_p585_Faggi http://hdl.handle.net/20.500.12110/paper_14000350_v15_n4_p585_Faggi |
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paper:paper_14000350_v15_n4_p585_Faggi2023-06-08T16:13:15Z Temporal and spatial changes in plant dune diversity in urban resorts Dadon, José Roberto 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] 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. Fil:Dadon, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14000350_v15_n4_p585_Faggi http://hdl.handle.net/20.500.12110/paper_14000350_v15_n4_p585_Faggi |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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] |
| spellingShingle |
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] Dadon, José Roberto Temporal and spatial changes in plant dune diversity in urban resorts |
| topic_facet |
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] |
| description |
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. |
| author |
Dadon, José Roberto |
| author_facet |
Dadon, José Roberto |
| author_sort |
Dadon, José Roberto |
| title |
Temporal and spatial changes in plant dune diversity in urban resorts |
| title_short |
Temporal and spatial changes in plant dune diversity in urban resorts |
| title_full |
Temporal and spatial changes in plant dune diversity in urban resorts |
| title_fullStr |
Temporal and spatial changes in plant dune diversity in urban resorts |
| title_full_unstemmed |
Temporal and spatial changes in plant dune diversity in urban resorts |
| title_sort |
temporal and spatial changes in plant dune diversity in urban resorts |
| publishDate |
2011 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14000350_v15_n4_p585_Faggi http://hdl.handle.net/20.500.12110/paper_14000350_v15_n4_p585_Faggi |
| work_keys_str_mv |
AT dadonjoseroberto temporalandspatialchangesinplantdunediversityinurbanresorts |
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1768544654277476352 |