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- Title
Tracking Metal Pollution in Lake Chapala: Concentrations in Water, Sediments, and Fish.
- Authors
Torres, Zaria; Mora, Miguel; Taylor, Robert; Alvarez-Bernal, Dioselina
- Abstract
We measured concentrations of selected metals (Al, Ba, Cu, Mn, Hg, Sr, V, and Zn) in water, sediments, and fish from Lake Chapala and a reference site to evaluate potential negative effects on wildlife, particularly fish-eating birds. Fish metal concentrations ranged from 0.05 µg/g wet weight (ww) for Al and Cu to 64.70 µg/g ww for Sr. There was a positive and significant correlation between fish length and metals particularly for Ba, Cu, Mn, and Zn in Lake Chapala ( p < 0.05). However, there were no significant correlations between metal concentrations and δN values in fish indicating no biomagnification through the food web. Overall, metal concentrations in water, sediments, and fish were similar to and in some cases below those reported for Lake Chapala over the last 20 years. Also, metal concentrations were below those that could be of concern for negative effects on fish and wildlife of Lake Chapala.
- Subjects
LAKE Chapala (Mexico); METAL content of water; PISCIVOROUS birds; PHYSIOLOGICAL effects of metals; BIOMAGNIFICATION; BIOACCUMULATION; BIRDS
- Publication
Bulletin of Environmental Contamination & Toxicology, 2016, Vol 97, Issue 3, p418
- ISSN
0007-4861
- Publication type
Article
- DOI
10.1007/s00128-016-1892-6