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X Demographics
Mendeley readers
Attention Score in Context
| Title |
Whole-ecosystem study shows rapid fish-mercury response to changes in mercury deposition
|
|---|---|
| Published in |
Proceedings of the National Academy of Sciences of the United States of America, October 2007
|
| DOI | 10.1073/pnas.0704186104 |
| Pubmed ID | |
| Authors |
Reed C. Harris, John W. M. Rudd, Marc Amyot, Christopher L. Babiarz, Ken G. Beaty, Paul J. Blanchfield, R. A. Bodaly, Brian A. Branfireun, Cynthia C. Gilmour, Jennifer A. Graydon, Andrew Heyes, Holger Hintelmann, James P. Hurley, Carol A. Kelly, David P. Krabbenhoft, Steve E. Lindberg, Robert P. Mason, Michael J. Paterson, Cheryl L. Podemski, Art Robinson, Ken A. Sandilands, George R. Southworth, Vincent L. St. Louis, Michael T. Tate |
| Abstract |
Methylmercury contamination of fisheries from centuries of industrial atmospheric emissions negatively impacts humans and wildlife worldwide. The response of fish methylmercury concentrations to changes in mercury deposition has been difficult to establish because sediments/soils contain large pools of historical contamination, and many factors in addition to deposition affect fish mercury. To test directly the response of fish contamination to changing mercury deposition, we conducted a whole-ecosystem experiment, increasing the mercury load to a lake and its watershed by the addition of enriched stable mercury isotopes. The isotopes allowed us to distinguish between experimentally applied mercury and mercury already present in the ecosystem and to examine bioaccumulation of mercury deposited to different parts of the watershed. Fish methylmercury concentrations responded rapidly to changes in mercury deposition over the first 3 years of study. Essentially all of the increase in fish methylmercury concentrations came from mercury deposited directly to the lake surface. In contrast, <1% of the mercury isotope deposited to the watershed was exported to the lake. Steady state was not reached within 3 years. Lake mercury isotope concentrations were still rising in lake biota, and watershed mercury isotope exports to the lake were increasing slowly. Therefore, we predict that mercury emissions reductions will yield rapid (years) reductions in fish methylmercury concentrations and will yield concomitant reductions in risk. However, a full response will be delayed by the gradual export of mercury stored in watersheds. The rate of response will vary among lakes depending on the relative surface areas of water and watershed. |
X Demographics
The data shown below were collected from the profiles of 5 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Canada | 2 | 40% |
| United Kingdom | 1 | 20% |
| Japan | 1 | 20% |
| Unknown | 1 | 20% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 4 | 80% |
| Science communicators (journalists, bloggers, editors) | 1 | 20% |
Mendeley readers
The data shown below were compiled from readership statistics for 343 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 10 | 3% |
| Canada | 9 | 3% |
| Belgium | 2 | <1% |
| Germany | 1 | <1% |
| Portugal | 1 | <1% |
| France | 1 | <1% |
| China | 1 | <1% |
| Brazil | 1 | <1% |
| Unknown | 317 | 92% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 61 | 18% |
| Researcher | 61 | 18% |
| Student > Master | 57 | 17% |
| Student > Bachelor | 33 | 10% |
| Student > Doctoral Student | 22 | 6% |
| Other | 70 | 20% |
| Unknown | 39 | 11% |
| Readers by discipline | Count | As % |
|---|---|---|
| Environmental Science | 115 | 34% |
| Agricultural and Biological Sciences | 90 | 26% |
| Earth and Planetary Sciences | 34 | 10% |
| Chemistry | 12 | 3% |
| Biochemistry, Genetics and Molecular Biology | 7 | 2% |
| Other | 28 | 8% |
| Unknown | 57 | 17% |
Attention Score in Context
This research output has an Altmetric Attention Score of 19. 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 April 2021.
All research outputs
#1,966,993
of 26,017,215 outputs
Outputs from Proceedings of the National Academy of Sciences of the United States of America
#24,342
of 104,451 outputs
Outputs of similar age
#4,276
of 87,867 outputs
Outputs of similar age from Proceedings of the National Academy of Sciences of the United States of America
#90
of 578 outputs
Altmetric has tracked 26,017,215 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 91st percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 104,451 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 39.5. This one has done well, scoring higher than 76% 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 87,867 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 93% of its contemporaries.
We're also able to compare this research output to 578 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 84% of its contemporaries.