| Title |
Half a century of changing mercury levels in Swedish freshwater fish
|
|---|---|
| Published in |
Ambio, November 2014
|
| DOI | 10.1007/s13280-014-0564-1 |
| Pubmed ID | |
| Authors |
Staffan Åkerblom, Anders Bignert, Markus Meili, Lars Sonesten, Marcus Sundbom |
| Abstract |
The variability of mercury (Hg) levels in Swedish freshwater fish during almost 50 years was assessed based on a compilation of 44 927 observations from 2881 waters. To obtain comparable values, individual Hg concentrations of fish from any species and of any size were normalized to correspond to a standard 1-kg pike [median: 0.69 mg kg⁻¹ wet weight (ww), mean ± SD: 0.84 ± 0.67 mg kg⁻¹ ww]. The EU Environmental Quality Standard of 0.02 mg kg⁻¹ was exceeded in all waters, while the guideline set by FAO/WHO for Hg levels in fish used for human consumption (0.5-1.0 mg kg⁻¹) was exceeded in 52.5 % of Swedish waters after 2000. Different trend analysis approaches indicated an overall long-term decline of at least 20 % during 1965-2012 but trends did not follow any consistent regional pattern. During the latest decade (2003-2012), however, a spatial gradient has emerged with decreasing trends predominating in southwestern Sweden. |
X Demographics
The data shown below were collected from the profiles of 2 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Norway | 1 | 50% |
| Sweden | 1 | 50% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 2 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 61 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 2% |
| Unknown | 60 | 98% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 16 | 26% |
| Student > Master | 8 | 13% |
| Student > Bachelor | 7 | 11% |
| Student > Ph. D. Student | 6 | 10% |
| Professor | 3 | 5% |
| Other | 8 | 13% |
| Unknown | 13 | 21% |
| Readers by discipline | Count | As % |
|---|---|---|
| Environmental Science | 22 | 36% |
| Agricultural and Biological Sciences | 9 | 15% |
| Earth and Planetary Sciences | 4 | 7% |
| Biochemistry, Genetics and Molecular Biology | 2 | 3% |
| Unspecified | 1 | 2% |
| Other | 3 | 5% |
| Unknown | 20 | 33% |
Attention Score in Context
This research output has an Altmetric Attention Score of 13. 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 10 May 2021.
All research outputs
#2,722,310
of 26,017,215 outputs
Outputs from Ambio
#511
of 1,954 outputs
Outputs of similar age
#30,188
of 271,219 outputs
Outputs of similar age from Ambio
#5
of 20 outputs
Altmetric has tracked 26,017,215 research outputs across all sources so far. Compared to these this one has done well and is in the 88th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 1,954 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 16.2. This one has gotten more attention than average, scoring higher than 72% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 271,219 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 88% of its contemporaries.
We're also able to compare this research output to 20 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 75% of its contemporaries.