Abstract The process of metal bioaccumulation in marine food chains is poorly understood because very little data is available on metal
concentration at different trophic levels and their temporal or spatial variation. Because of that, we were interested to
(1) determine the concentration range of heavy metals in seaweed and seagrasses species in Magdalena Bay; (2) describe the
spatial and temporal variation of heavy metal concentrations in the seaweeds and seagrasses. Seasonal collections were done
at Estero Banderitas in November 2004, February, and April 2005 wherein we divided the estuary into three major areas (upper,
middle, and lower), and within each area, two sites were selected. Our results showed that iron, copper, and magnesium were
the most significant metals found in seagrasses, red, and green algae. We found significant more variation in temporal heavy
metal concentrations in relation to the maximum abundance in the samples and spatial variation in relation to the studied
taxa suggesting that hervibores have a differential intake of the metals. Also, our results suggest that heavy metals might
be incorporated regularly in the diet of many herbivorous animals with severe consequences to their health. Management strategies
for these species should consider monitoring the levels of metals.
concentration at different trophic levels and their temporal or spatial variation. Because of that, we were interested to
(1) determine the concentration range of heavy metals in seaweed and seagrasses species in Magdalena Bay; (2) describe the
spatial and temporal variation of heavy metal concentrations in the seaweeds and seagrasses. Seasonal collections were done
at Estero Banderitas in November 2004, February, and April 2005 wherein we divided the estuary into three major areas (upper,
middle, and lower), and within each area, two sites were selected. Our results showed that iron, copper, and magnesium were
the most significant metals found in seagrasses, red, and green algae. We found significant more variation in temporal heavy
metal concentrations in relation to the maximum abundance in the samples and spatial variation in relation to the studied
taxa suggesting that hervibores have a differential intake of the metals. Also, our results suggest that heavy metals might
be incorporated regularly in the diet of many herbivorous animals with severe consequences to their health. Management strategies
for these species should consider monitoring the levels of metals.
- Content Type Journal Article
- DOI 10.1007/s10811-009-9457-2
- Authors
- R. Riosmena-Rodríguez, Universidad Autónoma de Baja California Sur Programa de Investigación en Botánica Marina, Departamento de Biología Marina La Paz Baja California Sur 23080 Mexico
- A. Talavera-Sáenz, Universidad Autónoma de Baja California Sur Programa de Investigación en Botánica Marina, Departamento de Biología Marina La Paz Baja California Sur 23080 Mexico
- B. Acosta-Vargas, Centro de Investigaciones Biológicas del Noroeste S.C. (CIBNOR) Mar Bermejo #195, Col. Playa Palo de Santa Rita. A.P. 128 23090 La Paz Baja California Sur Mexico
- S. C. Gardner, Centro de Investigaciones Biológicas del Noroeste S.C. (CIBNOR) Mar Bermejo #195, Col. Playa Palo de Santa Rita. A.P. 128 23090 La Paz Baja California Sur Mexico
- Journal Journal of Applied Phycology
- Online ISSN 1573-5176
- Print ISSN 0921-8971
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