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Mendeley readers
Attention Score in Context
| Title |
A Dynamic Marine Calcium Cycle During the Past 28 Million Years
|
|---|---|
| Published in |
Science, December 2008
|
| DOI | 10.1126/science.1163614 |
| Pubmed ID | |
| Authors |
Elizabeth M. Griffith, Adina Paytan, Ken Caldeira, Thomas D. Bullen, Ellen Thomas |
| Abstract |
Multiple lines of evidence have shown that the isotopic composition and concentration of calcium in seawater have changed over the past 28 million years. A high-resolution, continuous seawater calcium isotope ratio curve from marine (pelagic) barite reveals distinct features in the evolution of the seawater calcium isotopic ratio suggesting changes in seawater calcium concentrations. The most pronounced increase in the delta44/40Ca value of seawater (of 0.3 per mil) occurred over roughly 4 million years following a period of low values around 13 million years ago. The major change in marine calcium corresponds to a climatic transition and global change in the carbon cycle and suggests a reorganization of the global biogeochemical system. |
Mendeley readers
The data shown below were compiled from readership statistics for 126 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 3 | 2% |
| Germany | 2 | 2% |
| Kenya | 1 | <1% |
| United Kingdom | 1 | <1% |
| Mexico | 1 | <1% |
| Peru | 1 | <1% |
| China | 1 | <1% |
| Belgium | 1 | <1% |
| Unknown | 115 | 91% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 36 | 29% |
| Student > Ph. D. Student | 30 | 24% |
| Professor | 15 | 12% |
| Professor > Associate Professor | 10 | 8% |
| Student > Master | 8 | 6% |
| Other | 18 | 14% |
| Unknown | 9 | 7% |
| Readers by discipline | Count | As % |
|---|---|---|
| Earth and Planetary Sciences | 70 | 56% |
| Agricultural and Biological Sciences | 17 | 13% |
| Environmental Science | 14 | 11% |
| Computer Science | 2 | 2% |
| Chemical Engineering | 1 | <1% |
| Other | 4 | 3% |
| Unknown | 18 | 14% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. 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 24 March 2023.
All research outputs
#7,756,853
of 23,578,918 outputs
Outputs from Science
#48,667
of 78,703 outputs
Outputs of similar age
#48,465
of 168,216 outputs
Outputs of similar age from Science
#274
of 353 outputs
Altmetric has tracked 23,578,918 research outputs across all sources so far. This one is in the 44th percentile – i.e., 44% of other outputs scored the same or lower than it.
So far Altmetric has tracked 78,703 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 63.4. This one is in the 21st percentile – i.e., 21% of its peers scored the same or lower than it.
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 168,216 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 19th percentile – i.e., 19% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 353 others from the same source and published within six weeks on either side of this one. This one is in the 11th percentile – i.e., 11% of its contemporaries scored the same or lower than it.