Trace metal trophic transference and biomagnification in a semiarid coastal lagoon impacted by agriculture and shrimp aquaculture

被引:45
作者
Jara-Marini, Martin Enrique [1 ]
Molina-Garcia, Araceli [2 ]
Martinez-Durazo, Angel [2 ]
Paez-Osuna, Federico [3 ,4 ]
机构
[1] Centro Investigac Alimentc Desarrollo, Carretera Gustavo Astiazaran Rosas 46, Hermosillo 83304, Sonora, Mexico
[2] Centro Inmvestigac Alimentc Desarrollo, Unidad Hermosillo, Posgrado Ciencias, Carretera Gustavo Astiazaran Rosas 46, Hermosillo 83304, Sonora, Mexico
[3] Univ Nacl Autonoma Mex, Unidad Academ Mazatlan, Instituto Ciencias Mar Limnol, Box 811, Mazatlan 82000, Sinaloa, Mexico
[4] Colegio Sinaloa, Antonio Rosales 435 Pte, Culiacan, Sinaloa, Mexico
关键词
Anthropogenic activities; Metals; Stable isotopes; Gulf of California; Food web; Biomagnification; GULF-OF-CALIFORNIA; FOOD-WEB; STABLE-ISOTOPES; RISK-ASSESSMENT; HEAVY-METALS; ZN; PB; ELEMENTS; CD; CU;
D O I
10.1007/s11356-019-06788-2
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
We studied the biomagnification of cadmium (Cd), copper (Cu), lead (Pb), and zinc (Zn) with carbon (C) and nitrogen (N) stable isotope analyses during four seasons, in the food web of a semiarid coastal lagoon in the central-eastern Gulf of California (GC). The concentrations of the four metals increased among functional organism groups, from the food web base to the highest trophic levels. In general, the distribution of the elements for the four sampled seasons was Zn > Cu > Pb > Cd. The correlations between trophic level values and log-transformed metal concentrations were significantly (p < 0.05) positive for Cd (r = 0.61-0.91), Cu (r = 0.63-0.70), and Zn (r = 0.50-0.73), while Pb showed only one positive correlation (r = 0.38). The biomagnification factors (from specific predator-prey scenarios) ranged from 0.32 to 3.88 for Cd, 0.05 to 37.1 for Cu, 0.50 to 3.57 for Pb, and 0.70 to 22.2 for Zn. The trophic biomagnification factors (considering the entire food web) varied from 1.26 to 1.41 for Cd, 1.95 to 2.24 for Cu, 1.02 to 1.15 for Pb, and 1.45 to 1.78 for Zn. Our results show evidence for the biomagnification of Cd, Cu, and Zn in the studied food web, while data on Pb transference are not conclusive.
引用
收藏
页码:5323 / 5336
页数:14
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