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362745 
Journal Article 
Metal content in Ulva lactuca (Linnaeus) from Navachiste Bay (Southeast Gulf of California) Sinaloa, Mexico 
Orduña-Rojas, J; Longoria-Espinoza, RM 
2006 
Yes 
Bulletin of Environmental Contamination and Toxicology
ISSN: 0007-4861
EISSN: 1432-0800 
77 
4 
574-580 
This study was conducted to investigate the seasonal levels of Cd, Cu, Fe, Pb, and Zn in the green algae (Ulva lactuca) from the Navachiste Bay in southern Gulf of California, Sinoloa, Mexico. U. lactuca was hand-picked every two months from January through December 2002 from natural population at 1 to 1.5 m depth. The percentages of recovery were between 95 and 99, and only Cd concentration was significantly different from expected value. The concentrations of metals in algae varied significantly during the sampling period. The relative seasonal variation was higher for Fe and Zn, in which the highest concentrations were approximately five times higher than the lowest concentration. On the other hand, the relative variation for Cu, Cd and Pb was the lowest. The concentrations of all metals were minimum in summer, and increasing in October, and reached a maximum in winter, with the exception of Fe. The highest concentrations were observed in August (3652 µg/g), whereas the rest of the year concentrations ranged between approximately 500 to 1500 µg/g. Copper concentrations ranged from a minimum of 23 µg/g in the period June-August (summer) to a maximum of 44 µg/g in December. Cadmium concentrations were relatively lower compared to other metals and showed no strong variations during the seasons analysed. 
bioavailability; cadmium; copper; freshwater bays; iron; lead; polluted water; seasonal variation; water pollution; water quality; zinc; Gulf of Mexico; Mexico; algae; plants; aquatic plants; aquatic organisms; Western Central Atlantic; Atlantic Ocean; oceans; marine areas; North America; America; Developing Countries; Threshold Countries; Latin America; OECD Countries; Chlorophyta; seaweeds; eukaryotes; seasonal changes; seasonal fluctuations; Ulva; Ulva lactuca; Ulvaceae; Ulvales; water composition and quality; Aquatic Biology and Ecology (MM300); Water Resources (PP200); Pollution and Degradation (PP600); Industrial Wastes and Effluents (XX400)