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      Aspectos estructurales y florísticos de cuatro bosques Ribereños de la Cuenca del Río Aroa, Estado Yaracuy, Venezuela Translated title: Structural and floristic aspects of four riparian forests in the Aroa river basin, Yaracuy State, Venezuela

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          Abstract

          Se caracterizaron aspectos de la composición florística y de la estructura de cuatro bosques ribereños de la cuenca del río Aroa, zona vecina del Parque Nacional Yurubí en la serranía de Aroa perteneciente a la cordillera de la costa en el occidente de Venezuela, con el  propósito de resaltar la importancia de estos bosques para conservar la biodiversidad. En parcelas de 0,1 ha se censaron los individuos con DAP ≥ 2,5 cm. Se muestrearon 789  individuos, distribuidos en 38 familias, 78 géneros y 94 especies. De los individuos registrados, 40% pertenecen a las familias Euphorbiaceae (96), Piperaceae (53), Annonaceae (38), Mimosaceae (32), Lecythidaceae (31), Myristicaceae (28), Lacistemataceae (23) y Araliaceae (19). La familia con mayor riqueza de especies fue Rubiaceae (10), seguida por Euphorbiaceae (7), Mimosaceae (7), Caesalpiniaceae (4), Myristicaceae (4), y Araliaceae y Annonaceae (3). Los bosques ribereños estudiados presentaron dominancia heterogénea compartida entre aproximadamente seis especies, excepto el bosque ribereño del río Carabobo, sector El Tigre, que presentó marcada dominancia del candelo (Gyranthera caribensis), con 19% del Índice de Valor de Importancia (IVI). Las características estructurales de las parcelas estudiadas revelan que estos cuatro bosques ribereños tienen un dosel conformado en su mayoría por individuos que pueden alcanzar 8 m de altura y donde predominan las clases diamétricas comprendidas entre 2,54-10 cm de DAP, a excepción del bosque ribereño del río Carabobo, sector El Tigre donde 49% de los individuos pertenecen a clases diamétricas ≥ 10 cm de DAP y 52% de los individuos tienen alturas ≥ 8 m.

          Translated abstract

          Four riparian forests of the basin of the Aroa river neighboring area of the Yuribí National Park in the Aroa mountainous region were studied in western Venezuela, on the purpose of showing the importance of forests in biodiversity conservation. Quantitative data were recorded on the floristic composition, structure and diversity of four 0.1 ha plots. All the individuals with DBH ≥ 2.5 cm were recorded. In this study 789 individuals, 94 species, 78  genera and 38 families of vascular plants were sampled. Among the registered individuals, 40% belong to the families Euphorbiaceae (96 individuals), Piperaceae (53), Annonaceae (38), Mimosaceae (32), Lecythidaceae (31), Myristicaceae (28), Lacistemataceae (23) and Araliaceae (19). The family with the highest number of species was Rubiaceae (10), followed by Euphorbiaceae (7), Mimosaceae (7), Caesalpiniaceae (4), Myristicaceae (4), Araliaceae and Moraceae (3). The riparian forests studied showed an heterogeneous dominance of at least six species, although the riparian forest El Tigre showed a strong dominance of candelo (Gyranthera caribensis) with 19% of Importance Value Index (IVI). The structural characteristics of the studied plots reveal that these riparian forests present a canopy that can reach 8 m of height and that the diametric classes between 2.5 and 10 cm of DBH prevail. However, 49% of the individuals from the riparian forest El Tigre belong to diameter class ≥ 10 cm of DBH and 52% have heights ≥ 8 m.

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                Author and article information

                Contributors
                Role: ND
                Journal
                abv
                Acta Botánica Venezuelica
                Acta Bot. Venez.
                Fundación Instituto Botánico de Venezuela Dr. Tobías Lasser (Caracas )
                0084-5906
                June 2008
                : 31
                : 1
                : 273-290
                Affiliations
                [1 ] Universidad Centroccidental Lisandro Alvarado
                Article
                S0084-59062008000100009
                6ae62cbf-b819-4320-9b5e-9092f2a86200

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Venezuela

                Self URI (journal page): http://www.scielo.org.ve/scielo.php?script=sci_serial&pid=0084-5906&lng=en
                Categories
                PLANT SCIENCES

                Plant science & Botany
                Venezuela,Bosque ribereño,diversidad,florística,río Aroa,diversity,Yaracuy,floristics,riparian forest,Aroa river

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