Structure and floristic pattern of a coastal dunes in southeastern Brazil
The Brazilian shrublands area (restinga) is composed of marine coast vegetation on Quaternary sandy plains, where the species composition can vary depending on the surrounding ecosystems. The aims of this study were to describe the structure and floristic composition of a restinga near the community...
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| Format: | Article |
| Language: | English |
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Sociedade Botânica do Brasil
2013-03-01
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| Series: | Acta Botânica Brasílica |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100011 |
| _version_ | 1819266248488255488 |
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| author | Augusto Giaretta Luis Fernando Tavares de Menezes Oberdan José Pereira |
| author_facet | Augusto Giaretta Luis Fernando Tavares de Menezes Oberdan José Pereira |
| author_sort | Augusto Giaretta |
| collection | DOAJ |
| description | The Brazilian shrublands area (restinga) is composed of marine coast vegetation on Quaternary sandy plains, where the species composition can vary depending on the surrounding ecosystems. The aims of this study were to describe the structure and floristic composition of a restinga near the community of Itaúnas, in the northern part of the state of Espírito Santo, to identify any relationships between this restinga and surrounding plant formations, and to determine which are the species that occur preferentially in the coastal forests of Espírito Santo. We sampled woody plants with a diameter at breast height > 2.5 cm, excluding lianas, in 50 plots of 100 m². We selected studies of coastal forests in the states of Espírito Santo and Bahia to prepare a database that would reveal patterns of floristic variation among these areas. We used t wo-way indicator species analysis for the identification of the species that occur preferentially in the coastal forests of Espírito Santo. We identified 114 species belonging to 38 families. Species richness was greatest for Myrtaceae (26 species), followed by Fabaceae (10). The Shannon index for the study area was 3.96. The estimated total density was 3,330 individuals/ha and basal area was 32.02 m²/ha. The highest importance value (IV) was for Protium heptaphyllum (IV, 23.4), indicating that it is characteristic of the Espírito Santo restinga. The results of our floristic analysis indicate that the species composition of the Itaúnas restinga is influenced by the so-called tabuleiro forests (coastal lowland forests on Tertiary deposits), which are most common in northern Espírito Santo. This seems to be the main factor responsible for the gradual reduction in floristic similarity between the restingas in the north of Espírito Santo and those in the south of the state, each constituting a distinct floristic block. In addition, we generated lists of species that occur preferentially in the restinga and tabuleiro forests. Those lists could inform decisions regarding environmental restoration programs. |
| first_indexed | 2024-12-23T20:58:15Z |
| format | Article |
| id | doaj.art-d8caeb7005a549d4a1bf09a74b7728fa |
| institution | Directory Open Access Journal |
| issn | 0102-3306 1677-941X |
| language | English |
| last_indexed | 2024-12-23T20:58:15Z |
| publishDate | 2013-03-01 |
| publisher | Sociedade Botânica do Brasil |
| record_format | Article |
| series | Acta Botânica Brasílica |
| spelling | doaj.art-d8caeb7005a549d4a1bf09a74b7728fa2022-12-21T17:31:28ZengSociedade Botânica do BrasilActa Botânica Brasílica0102-33061677-941X2013-03-0127187107Structure and floristic pattern of a coastal dunes in southeastern BrazilAugusto GiarettaLuis Fernando Tavares de MenezesOberdan José PereiraThe Brazilian shrublands area (restinga) is composed of marine coast vegetation on Quaternary sandy plains, where the species composition can vary depending on the surrounding ecosystems. The aims of this study were to describe the structure and floristic composition of a restinga near the community of Itaúnas, in the northern part of the state of Espírito Santo, to identify any relationships between this restinga and surrounding plant formations, and to determine which are the species that occur preferentially in the coastal forests of Espírito Santo. We sampled woody plants with a diameter at breast height > 2.5 cm, excluding lianas, in 50 plots of 100 m². We selected studies of coastal forests in the states of Espírito Santo and Bahia to prepare a database that would reveal patterns of floristic variation among these areas. We used t wo-way indicator species analysis for the identification of the species that occur preferentially in the coastal forests of Espírito Santo. We identified 114 species belonging to 38 families. Species richness was greatest for Myrtaceae (26 species), followed by Fabaceae (10). The Shannon index for the study area was 3.96. The estimated total density was 3,330 individuals/ha and basal area was 32.02 m²/ha. The highest importance value (IV) was for Protium heptaphyllum (IV, 23.4), indicating that it is characteristic of the Espírito Santo restinga. The results of our floristic analysis indicate that the species composition of the Itaúnas restinga is influenced by the so-called tabuleiro forests (coastal lowland forests on Tertiary deposits), which are most common in northern Espírito Santo. This seems to be the main factor responsible for the gradual reduction in floristic similarity between the restingas in the north of Espírito Santo and those in the south of the state, each constituting a distinct floristic block. In addition, we generated lists of species that occur preferentially in the restinga and tabuleiro forests. Those lists could inform decisions regarding environmental restoration programs.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100011phytosociologyphytogeographyPleistocene restingaEspírito SantoItaúnas |
| spellingShingle | Augusto Giaretta Luis Fernando Tavares de Menezes Oberdan José Pereira Structure and floristic pattern of a coastal dunes in southeastern Brazil Acta Botânica Brasílica phytosociology phytogeography Pleistocene restinga Espírito Santo Itaúnas |
| title | Structure and floristic pattern of a coastal dunes in southeastern Brazil |
| title_full | Structure and floristic pattern of a coastal dunes in southeastern Brazil |
| title_fullStr | Structure and floristic pattern of a coastal dunes in southeastern Brazil |
| title_full_unstemmed | Structure and floristic pattern of a coastal dunes in southeastern Brazil |
| title_short | Structure and floristic pattern of a coastal dunes in southeastern Brazil |
| title_sort | structure and floristic pattern of a coastal dunes in southeastern brazil |
| topic | phytosociology phytogeography Pleistocene restinga Espírito Santo Itaúnas |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100011 |
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