Distribuição das espécies e estrutura do manguezal do rio Benevente, Anchieta, ES

Abstract

Abstract:The structure of the mangrove forest of the Benevente River estuary, in Anchieta, ES, was analyzed by the plot method in order to evaluate the distribution of species along the river. The results indicated a trend of species distribution, in which Avicennia schaueriana Leechm ex Stapf & Moldenke and Rhizophora mangle L. exhibited the highest dominance and relative density in areas under greater marine influence, while Laguncularia racemosa (L.) Gaertn.f. and Avicennia germinans (L.) Stearn. showed higher dominance and relative density in areas under greater influence of fresh water. The density ranged from 700 to 7,866 stems.ha -1 , the basal area from 10.3 to 72.2 m 2 .ha -1 , the average height from 2.0 to 16.4 m and average DBH (diameter at breast height) from 4.7 to 27.3 cm. Most forests exhibited distribution of trunks of the inverted iota type, with an absence of selective cutting. The contribution of the basal area was larger in diameter class ≥10 cm, indicating the high structural development of the forests studied. The forests studied exhibited good conservation. , a altura média de 2,0 a 16,4 m e o DAP médio de 4,7 a 27,3 cm. A maioria das florestas analisadas exibiu distribuição de troncos do tipo jota invertido, com ausência de corte seletivo. A contribuição em área basal foi maior na classe diamétrica ≥10 cm, indicando o elevado desenvolvimento estrutural das florestas estudadas. As florestas analisadas exibiram bom estado de conservação.

THE RECOVERY OF A DEGRADED MANGROVE IN CEARÁ THROUGH THE PRODUCTION OF Laguncularia racemosa (L.) C.F. Gaertn. (Combretaceae) AND Avicennia sp. Stapf ex Ridl (Acanthaceae) SEEDLINGS

“…According to Smith III (1992), mangrove forests subjected to more frequent disturbances have lower numbers of Rhizophoraceae species compared to species such as Laguncularia racemosa. Petri et al (2011) analyzed the vegetation structure of a mangrove forest in the Benavente River estuary (ES) and noted that the species R. mangle and A. schaueriana are dominant in areas with marine influence and longer flooding by tides while the species L. racemosa and A. germinans were dominant in areas of high influence of freshwater.…”

“…The greater the knowledge of the ecosystem's functions, the greater the chances of producing management plans and aiding its recovery (MENEZES, 2005;QUEIROZ et al, 2013.). As the result of the vegetation structure evaluation in this study, Laguncularia racemosa and Avicennia sp were chosen for the production of seedlings to be used in the restoration of degraded areas.…”

Estrutura da vegetação de mangue associada ao gradiente de inundação no litoral norte do Espírito Santo, Brasil

“…Todavia, é importante ressaltar que a espécie dominante pode variar de manguezal para manguezal, em virtude das características abióticas e bióticas (ex. : tolerância à inundação e à salinidade, competição interespecífica), além da influência do estresse natural e antrópico (PETRI et al, 2011) …”

Benthic macrofaunal structure and secondary production in tropical estuaries on the Eastern Marine Ecoregion of Brazil

“…The northernmost estuary, Piraquê-Açu-Mirim estuary (PAE; 19°57'S 40°09'W) is within a municipal conservation unit and covered by extensive and well-developed mangrove forests with an area of over 19 km 2 (Servino et al in review). The Vitória Bay estuarine system (VIB; 20º16'S 40º20'W) is the largest estuary on the region with approximately 18 km 2 of mangrove forests and surrounded by a densely populated metropolitan area with high levels of sewage input and industrial activities (Jesus et al 2004 (Pereira et al 2009, Petri et al 2011. Mangrove forests of the three estuaries are composed by Rhizophora mangle, Laguncularia racemosa and Avicennia schaueriana species.…”