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X Demographics
Mendeley readers
Attention Score in Context
| Title |
The case for negative senescence
|
|---|---|
| Published in |
Theoretical Population Biology, June 2004
|
| DOI | 10.1016/j.tpb.2003.12.003 |
| Pubmed ID | |
| Authors |
James W. Vaupel, Annette Baudisch, Martin Dölling, Deborah A. Roach, Jutta Gampe |
| Abstract |
Negative senescence is characterized by a decline in mortality with age after reproductive maturity, generally accompanied by an increase in fecundity. Hamilton (1966) ruled out negative senescence: we adumbrate the deficiencies of his model. We review empirical studies of various plants and some kinds of animals that may experience negative senescence and conclude that negative senescence may be widespread, especially in indeterminate-growth species for which size and fertility increase with age. We develop optimization models of life-history strategies that demonstrate that negative senescence is theoretically possible. More generally, our models contribute to understanding of the evolutionary and demographic forces that mold the age-trajectories of mortality, fertility and growth. |
X Demographics
The data shown below were collected from the profiles of 8 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Germany | 1 | 13% |
| United States | 1 | 13% |
| Russia | 1 | 13% |
| Spain | 1 | 13% |
| Unknown | 4 | 50% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 7 | 88% |
| Scientists | 1 | 13% |
Mendeley readers
The data shown below were compiled from readership statistics for 286 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 4 | 1% |
| United Kingdom | 4 | 1% |
| Mexico | 2 | <1% |
| Spain | 2 | <1% |
| Portugal | 1 | <1% |
| Netherlands | 1 | <1% |
| Brazil | 1 | <1% |
| Sweden | 1 | <1% |
| Unknown | 270 | 94% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 61 | 21% |
| Student > Ph. D. Student | 58 | 20% |
| Student > Bachelor | 32 | 11% |
| Student > Master | 30 | 10% |
| Professor | 25 | 9% |
| Other | 48 | 17% |
| Unknown | 32 | 11% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 134 | 47% |
| Environmental Science | 27 | 9% |
| Biochemistry, Genetics and Molecular Biology | 25 | 9% |
| Social Sciences | 14 | 5% |
| Medicine and Dentistry | 11 | 4% |
| Other | 34 | 12% |
| Unknown | 41 | 14% |
Attention Score in Context
This research output has an Altmetric Attention Score of 45. 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 15 November 2023.
All research outputs
#943,374
of 26,017,215 outputs
Outputs from Theoretical Population Biology
#5
of 718 outputs
Outputs of similar age
#983
of 63,681 outputs
Outputs of similar age from Theoretical Population Biology
#1
of 3 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 95th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 718 research outputs from this source. They receive a mean Attention Score of 4.8. This one has done particularly well, scoring higher than 97% 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 63,681 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 98% of its contemporaries.
We're also able to compare this research output to 3 others from the same source and published within six weeks on either side of this one. This one has scored higher than all of them