期刊名称：Journal of Environmental Chemistry and Ecotoxicology
电子版ISSN：2141-226X
出版年度：2011
卷号：3
期号：6
页码：149-159
语种：English
出版社：Academic Journals
摘要：A major threat to the seagrass ecosystem worldwide, due to the growth of human population along the coastal environment, is pollution or contamination resulting from industrial and urban development. Although seagrass appears to be rather resistant to heavy metal contaminants, these substances may possibly harm some components of the seagrass and such responses have not been examined to a significant extent. Lead (Pb) and copper (Cu)wastested on seagrass,Halophila ovalis,to see whether the metals areenvironmental stressor on the seagrass.Reduced growth rate of the seagrass was observed both in Pb and Cu treatments.Leaf size of the plant also reduced as the metal concentrations increased and when the plants were exposed to the heavy metal for longer duration. An increased leaf asymmetry was more apparent atthe 2 mg/LCu treatmentand no significant increases in fluctuating asymmetry were found inPbtreatment or in low levels of Cu treatment.Further discussion were made in view of selecting non-costly bioindicators of heavy metal contamination.
关键词：Bioindicators; fluctuating asymmetry; Halophila ovalis; heavy metals; seagrass.
