| Title |
Mercury biomagnification in subtropical reservoir fishes of eastern China
|
|---|---|
| Published in |
Ecotoxicology, December 2013
|
| DOI | 10.1007/s10646-013-1158-6 |
| Pubmed ID | |
| Authors |
N. Roxanna Razavi, Mingzhi Qu, Binsong Jin, Wenwei Ren, Yuxiang Wang, Linda M. Campbell |
| Abstract |
Little is known about mercury (Hg) biomagnification in the subtropics, aquatic systems with high species diversity resulting in complex food webs. High atmospheric Hg emissions and ubiquitous reservoir fisheries may lead to elevated Hg bioaccumulation in Chinese freshwater fishes. However, stocking practices using fast-growing species can result in low fish total Hg (THg) concentrations. Here, we describe Hg transfer within the fish food web of a large subtropical reservoir, Qiandao Hu (Xin'anjiang reservoir) situated in eastern China. We measured food web Hg biomagnification and THg concentrations in 33 species of stocked and wild fishes. Mercury concentrations in most fishes were low, though we also found high Hg concentrations in wild top predators. The food web structure, assessed using stable isotopes of carbon (δ(13)C) and nitrogen (δ(15)N), demonstrated a high degree of omnivory and a long food chain. THg concentrations were highly correlated with fish δ(15)N values. The regression of log10THg against δ(15)N revealed the overall Hg biomagnification rate was low. This study shows that where long food chains exist in subtropical reservoirs, elevated Hg accumulation in top predators can occur despite a low Hg biomagnification rate. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 2 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Scientists | 1 | 50% |
| Members of the public | 1 | 50% |
Mendeley readers
The data shown below were compiled from readership statistics for 48 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Canada | 1 | 2% |
| Unknown | 47 | 98% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 11 | 23% |
| Student > Ph. D. Student | 9 | 19% |
| Student > Master | 7 | 15% |
| Professor | 5 | 10% |
| Student > Doctoral Student | 4 | 8% |
| Other | 6 | 13% |
| Unknown | 6 | 13% |
| Readers by discipline | Count | As % |
|---|---|---|
| Environmental Science | 17 | 35% |
| Agricultural and Biological Sciences | 10 | 21% |
| Earth and Planetary Sciences | 3 | 6% |
| Engineering | 3 | 6% |
| Biochemistry, Genetics and Molecular Biology | 2 | 4% |
| Other | 3 | 6% |
| Unknown | 10 | 21% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 22 December 2013.
All research outputs
#15,288,160
of 22,736,112 outputs
Outputs from Ecotoxicology
#651
of 1,471 outputs
Outputs of similar age
#192,578
of 307,365 outputs
Outputs of similar age from Ecotoxicology
#6
of 12 outputs
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We're also able to compare this research output to 12 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 50% of its contemporaries.