Oberdan José Pereira

Florística de um trecho de floresta de restinga no município de Guarapari, Espírito Santo, Brasil

The Paulo Cesar Vinha State Park (PCVSP), in Setiba, Guarapari Municipality (ES), is the best studied of all restinga conservation units in the state of Espirito Santo. But there is still much to be learned concerning the flora of some of the plant communities found here. From 1997 to 2000, plants were collected on random walks through approximately four hectares of forest that covers the outer beach ridges of the PCVSP. A total of 172 species were surveyed, belonging to 54 families. The most species-rich families are Myrtaceae (25 spp.), Bromeliaceae (14), Orchidaceae (13), Sapotaceae (10), Lauraceae (7), and Rubiaceae (7).The most common geographic distribution pattern, based on the literature, was that of Atlantic coast species, followed by widespread species, species found on both the Atlantic coast and in central Brazil, disjunct species and those endemic to Espirito Santo. Floristic similarity with other coastal areas is directly related to the distance between these areas. The presence of endemic and threatened species in the neighborhood of the Park reinforces the need for effective conservation of this area and provides the incentive to create other conservation units in the restingas of Espirito Santo State.

The flora of Camburi restinga, Vitória, Espírito Santo State, Brazil.

The flora of the Camburi restinga in the municipality of Vitoria, Espirito Santo State, Brazil, was surveyed and vegetation types were classified. Monthly visits to the area resulted in a list of 211 species from 70 plant families of which the most important, according to species richness, were Fabaceae (19), Myrtaceae (14), Euphorbiaceae (10), Rubiaceae (10), Cyperaceae (9), Sapindaceae (7) and Lauraceae (7). This coastal plain still supports remnant patches of dry restinga forest, open Ericaceae scrub and sedge marsh, as well as disturbed areas dominated by pioneer species. Most of the species are widely distributed along the Brazilian coast other patterns, however, being found. Erythmxylum tenue Plowman, Ocotea nutans (Nees) Mez, Miconia brevipes Benth., Prescottia pilntaginea Lindl., Pseudolaelia vellozicola (Hoehne) Porto & Brade and Coccocypselum hirsutum Bartl. ex DC. are reported for the first time in the restingas of Espirito Santo.

Structure and floristic pattern of a coastal dunes in southeastern Brazil

ABSTRACT Th e 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. Th e aims of this study were to describe the structure and fl oristic composition of a restinga near the community of Itaunas, in the northern part of the state of Espirito 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 Espirito 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 Espirito Santo and Bahia to prepare a database that would reveal patterns of fl oristic variation among these areas. We used two-way indicator species analysis for the identifi cation of the species that occur preferentially in the coastal forests of Espirito Santo. We identifi ed 114 species belonging to 38 families. Species richness was greatest for Myrtaceae (26 species), followed by Fabaceae (10). Th e Shannon index for the study area was 3.96. Th e estimated total density was 3,330 individuals/ha and basal area was 32.02 m²/ha. Th e highest importance value (IV) was for

Composição e estrutura de uma restinga arbustiva aberta no norte do Espírito Santo e relações florísticas com formações similares no Sudeste do Brasil

Resumo Foram analisadas a estrutura e a composicao floristica de uma formacao de restinga arbustiva aberta no Parque Estadual de Itaunas, ES, e verificada a similaridade entre a flora das formacoes de restinga arbustiva da Regiao Sudeste do Brasil. Para o levantamento, foi utilizado o metodo de intercepto de linha, contemplando individuos com altura igual ou superior a 50 cm. Os parâmetros fitossociologicos de frequencia e valor de importância (VI) foram calculados. A similaridade da flora das restingas arbustivas da Regiao Sudeste foi verificada utilizando o indice de Sorensen. Foram encontradas 42 especies em 28 familias, sendo Fabaceae e Bromeliaceae as mais ricas (quatro especies cada). As 10 especies mais importantes representaram 65,6% do VI total, evidenciando forte estrutura oligarquica, principalmente no estrato herbaceo. Assim, puderam ser apontadas especies que caracterizam esta formacao, a qual e associada com fatores ambientais que condicionam a composicao e abundância floristica. A analise de similaridade evidenciou que as restingas do sudeste formam dois blocos floristicos distintos, um ao norte (litoral do Espirito Santo) e outro mais ao sul (litoral do Rio de Janeiro). Foram comuns a todas as restingas analisadas Manilkara subsericea, Pilosocereus arrabidae e Byrsonima sericea , podendo ser consideradas de ampla distribuicao na costa sudeste. Composition and structure of an open scrub restinga of northern Espirito Santo and floristic relationships with similar formations in southeastern Brazil Abstract This study analyzed the structure and floristic composition of an open scrub restinga at Parque Estadual de Itaunas, Espirito Santo and verified the similarity between floras of the restinga formations in southeastern Brazil. The line intercept method was applied to sample individuals equal or greater than 50 cm tall. The frequency and an importance value were estimated. The similarity of the flora of the restinga formations in southeastern Brazil was performed using the Sorensen index. We surveyed 42 species in 28 families, being Fabaceae and Bromeliaceae the richest families (four species each). The 10 most important species represented 65.6% of the total importance value, showing a strong oligarchic structure, especially in the herbaceous layer. Thus, we identified some species that characterize this formation, which is associated with environmental factors that constrain floristic composition and abundance. The similarity analysis evidenced two distinct floristic blocks of southeastern restingas , one in the north (the coast of Espirito Santo) and another further to the south (coast of Rio de Janeiro). Some species were common to all analyzed resting formations - Manilkara subsericea , Pilosocereus arrabidae and Byrsonima sericea and may be considered of wide distribution on the southeast coast.