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Revista Científica UDO Agrícola
Universidad de Oriente Press
ISSN: 1317-9152
Vol. 7, No. 1, 2007, pp. 181-194
Bioline Code: cg07019
Full paper language: English
Document type: Research Article
Document available free of charge

Revista Científica UDO Agrícola, Vol. 7, No. 1, 2007, pp. 181-194

 es Efecto del Petróleo Crudo Sobre el Desarrollo de Plántulas de Mangle ( Rhizophora Mangle check for this species in other resources L.) en el Delta de Niger, Nigeria
Chindah, Alex Chuks; Braide, Solomon Amabaraye; Amakiri, Jonathan & Onokurhefe, Judith

Resumen

Este estudio se diseñó para evaluar los efectos agudos y crónicos del petróleo (Bonny Light) sobre el comportamiento del desarrollo de plántulas de mangle bajo condiciones de laboratorio, monitoreando las características críticas del crecimiento de las plantas tales como altura y diámetro del tallo, longitud de hojas, ancho y número de hojas (producción foliar), senescencia y sobrevivencia de plántulas durante 16 semanas. Los resultados mostraron diferencias en la respuesta de las características de las plántulas expuestas a los diferentes tratamientos con el efecto agudo teniendo un patrón de respuesta descendente de la altura del tallo - tasa de crecimiento relativo (TCR) = 0,17 > diámetro del tallo - TCR = 0,01 > longitud de hojas - TCR = 0 = ancho de hojas - TCR = 0 y el efecto crónico con longitud de hojas - TCR = 0,20 > altura de tallo - TCR = 0,19 > ancho de hojas - TCR = 0,15 > diámetro del tallo - TCR = -0.03. Estos resultados fueron adicionalmente corroborados mediante análisis de agrupamiento y correspondencia. Los resultados sugieren que las plántulas de mangle respondieron diferentemente a las varias exposiciones de petróleo y suministraron evidencia del comportamiento de las plántulas, la supervivencia y la implicación de las actividades de restauración a varios niveles de exposición de petróleo.

Palabras-clave
Rhizophora mangle, plántulas de mangle, petróleo crudo, Delta del Niger, Nigeria

 
 en Effect of Crude Oil on the Development of Mangrove ( Rhizophora Mangle check for this species in other resources L.) Seedlings from Niger Delta, Nigeria
Chindah, Alex Chuks; Braide, Solomon Amabaraye; Amakiri, Jonathan & Onokurhefe, Judith

Abstract

This study was designed using randomized block design to evaluate the acute and chronic effects of crude oil (Bonny Light) on the growth performance of mangrove seedlings in a 16-week laboratory experiment monitoring critical plant growth attributes such as stem height and diameter, leaf length , width and numbers of leaves (leaf production), senescence and seedlings survival. Two treatments were compared with the control (no oil added); they were: 150 mL crude oil applied once and 15 mL crude oil applied weekly. The results showed differences in response of seedling attributes exposed to the different treatments with acute exposure having a declining response pattern of stem height > stem diameter > leaf length = leaf and chronic exposure with leaf length > stem height > leaf width > stem diameter. These results were further corroborated by cluster and correspondence analyses, and demonstrated affinities of the attributes and extent and sensitivity of each attributes. This suggests that the mangrove seedlings respond differently to various crude oil exposures which has implications for restoration activities. The present study demonstrated that mangrove seedlings are negatively impacted by both acute and chronic exposure but more so with seedlings under acute exposure and further provided insight on the potential ecological risk associated with mangrove seedling development exposed to crude oil contamination.

Keywords
Rhizophora mangle, mangrove seedling, Bonny light crude oil, Niger Delta, Toxicity

 
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