Does the Lagoa do Peixe sandbar opening influence the macrophyte richness and composition in Southern Brazil wetlands?
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Universidad de Costa Rica
2013
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| author | Ana Silvia Rolon |
| author_facet | Ana Silvia Rolon |
| contents | Does the Lagoa do Peixe sandbar opening influence the macrophyte richness and composition in Southern Brazil wetlands? Ana Silvia Rolon Odete Rocha Leonardo Maltchik Biología Aquatic plants sandbar breaching floodplain wetlands species composition stability The Lagoa do Peixe has its connection with the sea artificially opened every year at the end of winter. However, this management has been carried out without the evaluation of the impact of this opening in the aquatic biodiversity. This information is crucial for the management of the natural resources of the Lagoa do Peixe National Park, the unique Ramsar site in Southern Brazil. The following questions were analyzed: (1) Do richness and composition of aquatic macrophytes from Lagoa do Peixe floodplain varies temporarily according to the sandbar opening and closing? (2) Does the variation pattern of the macrophyte community changed according to the sandbar opening and closing? A set of eight sampling sites of 1ha were selected over the Lagoa do Peixe floodplain: four sites not influenced by the artificial sandbar opening and four sites influenced by this event, being two sites closer to the sandbar opening and the two sites distant to the sandbar opening. The samplings were carried out between November 2007 and October 2009. The results show that although the artificial sandbar breaching does not affect the aquatic macrophyte richness at the floodplain, it affects the dynamics of species composition. The hydrological variation related to this management can be the main factor of the continuous change in the species composition in the floodplain, especially in the Southern portion. In order to avoid impacts in the macrophyte conservation, the artificial sandbar opening should be considered carefully, since the area of study is one of the most important conservation units to wetland systems in Southern Brazil. Rev. Biol. Trop. 61 (1): 409-417. Epub 2013 March 01. 2013 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44925650021 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.61 |
| format | Artículo científico |
| id | redalyc_44925650021 |
| institution | Redalyc |
| language | en |
| publishDate | 2013 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Does the Lagoa do Peixe sandbar opening influence the macrophyte richness and composition in Southern Brazil wetlands? Ana Silvia Rolon Biología Aquatic plants sandbar breaching floodplain wetlands species composition stability Does the Lagoa do Peixe sandbar opening influence the macrophyte richness and composition in Southern Brazil wetlands? Ana Silvia Rolon Odete Rocha Leonardo Maltchik Biología Aquatic plants sandbar breaching floodplain wetlands species composition stability The Lagoa do Peixe has its connection with the sea artificially opened every year at the end of winter. However, this management has been carried out without the evaluation of the impact of this opening in the aquatic biodiversity. This information is crucial for the management of the natural resources of the Lagoa do Peixe National Park, the unique Ramsar site in Southern Brazil. The following questions were analyzed: (1) Do richness and composition of aquatic macrophytes from Lagoa do Peixe floodplain varies temporarily according to the sandbar opening and closing? (2) Does the variation pattern of the macrophyte community changed according to the sandbar opening and closing? A set of eight sampling sites of 1ha were selected over the Lagoa do Peixe floodplain: four sites not influenced by the artificial sandbar opening and four sites influenced by this event, being two sites closer to the sandbar opening and the two sites distant to the sandbar opening. The samplings were carried out between November 2007 and October 2009. The results show that although the artificial sandbar breaching does not affect the aquatic macrophyte richness at the floodplain, it affects the dynamics of species composition. The hydrological variation related to this management can be the main factor of the continuous change in the species composition in the floodplain, especially in the Southern portion. In order to avoid impacts in the macrophyte conservation, the artificial sandbar opening should be considered carefully, since the area of study is one of the most important conservation units to wetland systems in Southern Brazil. Rev. Biol. Trop. 61 (1): 409-417. Epub 2013 March 01. 2013 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44925650021 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.61 |
| title | Does the Lagoa do Peixe sandbar opening influence the macrophyte richness and composition in Southern Brazil wetlands? |
| topic | Biología Aquatic plants sandbar breaching floodplain wetlands species composition stability |
| url | https://www.redalyc.org/articulo.oa?id=44925650021 |