TY - JOUR
T1 - Effects of used lubricating oil on two mangroves Aegiceras corniculatum and Avicennia marina
AU - YE, Yong
AU - TAM, NFY
N1 - Funding Information:
Project supported by the Program for New Century Excellent Talents in University (NCET) and the Environment and Conservation Fund of the HKSAR (No. 9210007). *Corresponding author. E-mail: [email protected].
PY - 2007
Y1 - 2007
N2 - An outdoor experiment was set up to investigate the effects of used lubricating oil (5 L/m2) on Aegiceras corniculatum Blanco. and Avicennia marina (Forsk) Vierh., two salt-excreting mangroves. A. marina was more sensitive to used lubricating oil than A. corniculatum and canopy-oiling resulted in more direct physical damage and stronger lethal effects than base-oiling. When treated with canopy-oiling, half of A. corniculatum plants survived for the whole treatment time (90 d); but, for A. marina, high mortality (83%) resulted from canopy-oiling within 3 weeks and no plants survived for 80 d. Base-oiling had no lethal effects on A. corniculatum plants even at the termination of this experiment, but 83% of A. marina plants died 80 d after treatment. Forty days after canopy-oiling, 93% of A. corniculatum leaves fell and no live leaves remained on A. marina plants. By the end of the experiment, base-oiling treatment resulted in about 45% of A. corniculatum leaves falling, while all A. marina leaves and buds were burned to die. Lubricating oil resulted in physiological damage to A. corniculatum leaves, including decreases in chlorophyll and carotenoid contents, nitrate reductase, peroxidase and superoxide dismutase activities, and increases in malonaldehyde contents. For both species, oil pollution significantly reduced leaf, root, and total biomass, but did not significantly affect stem biomass. Oil pollution resulted in damage to the xylem vessels of fine roots but not to those of mediate roots.
AB - An outdoor experiment was set up to investigate the effects of used lubricating oil (5 L/m2) on Aegiceras corniculatum Blanco. and Avicennia marina (Forsk) Vierh., two salt-excreting mangroves. A. marina was more sensitive to used lubricating oil than A. corniculatum and canopy-oiling resulted in more direct physical damage and stronger lethal effects than base-oiling. When treated with canopy-oiling, half of A. corniculatum plants survived for the whole treatment time (90 d); but, for A. marina, high mortality (83%) resulted from canopy-oiling within 3 weeks and no plants survived for 80 d. Base-oiling had no lethal effects on A. corniculatum plants even at the termination of this experiment, but 83% of A. marina plants died 80 d after treatment. Forty days after canopy-oiling, 93% of A. corniculatum leaves fell and no live leaves remained on A. marina plants. By the end of the experiment, base-oiling treatment resulted in about 45% of A. corniculatum leaves falling, while all A. marina leaves and buds were burned to die. Lubricating oil resulted in physiological damage to A. corniculatum leaves, including decreases in chlorophyll and carotenoid contents, nitrate reductase, peroxidase and superoxide dismutase activities, and increases in malonaldehyde contents. For both species, oil pollution significantly reduced leaf, root, and total biomass, but did not significantly affect stem biomass. Oil pollution resulted in damage to the xylem vessels of fine roots but not to those of mediate roots.
KW - Aegiceras corniculatum
KW - Avicennia marina
KW - mangrove
KW - used lubricating oil
UR - http://www.scopus.com/inward/record.url?scp=36148967363&partnerID=8YFLogxK
U2 - 10.1016/S1001-0742(07)60221-6
DO - 10.1016/S1001-0742(07)60221-6
M3 - Article
C2 - 18232231
AN - SCOPUS:36148967363
SN - 1001-0742
VL - 19
SP - 1355
EP - 1360
JO - Journal of Environmental Sciences
JF - Journal of Environmental Sciences
IS - 11
ER -