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X Demographics
Mendeley readers
Attention Score in Context
| Title |
Summer declines in activity and body temperature offer polar bears limited energy savings
|
|---|---|
| Published in |
Science, July 2015
|
| DOI | 10.1126/science.aaa8623 |
| Pubmed ID | |
| Authors |
J P Whiteman, H J Harlow, G M Durner, R Anderson-Sprecher, S E Albeke, E V Regehr, S C Amstrup, M Ben-David |
| Abstract |
Polar bears (Ursus maritimus) summer on the sea ice or, where it melts, on shore. Although the physiology of "ice" bears in summer is unknown, "shore" bears purportedly minimize energy losses by entering a hibernation-like state when deprived of food. Such a strategy could partially compensate for the loss of on-ice foraging opportunities caused by climate change. However, here we report gradual, moderate declines in activity and body temperature of both shore and ice bears in summer, resembling energy expenditures typical of fasting, nonhibernating mammals. Also, we found that to avoid unsustainable heat loss while swimming, bears employed unusual heterothermy of the body core. Thus, although well adapted to seasonal ice melt, polar bears appear susceptible to deleterious declines in body condition during the lengthening period of summer food deprivation. |
X Demographics
The data shown below were collected from the profiles of 29 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 5 | 17% |
| United Kingdom | 3 | 10% |
| Italy | 2 | 7% |
| Canada | 1 | 3% |
| Sweden | 1 | 3% |
| India | 1 | 3% |
| France | 1 | 3% |
| Unknown | 15 | 52% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 16 | 55% |
| Scientists | 7 | 24% |
| Science communicators (journalists, bloggers, editors) | 6 | 21% |
Mendeley readers
The data shown below were compiled from readership statistics for 175 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 3 | 2% |
| United Kingdom | 2 | 1% |
| Romania | 1 | <1% |
| Unknown | 169 | 97% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 32 | 18% |
| Student > Bachelor | 29 | 17% |
| Researcher | 25 | 14% |
| Student > Master | 20 | 11% |
| Other | 9 | 5% |
| Other | 21 | 12% |
| Unknown | 39 | 22% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 73 | 42% |
| Environmental Science | 30 | 17% |
| Biochemistry, Genetics and Molecular Biology | 5 | 3% |
| Nursing and Health Professions | 3 | 2% |
| Earth and Planetary Sciences | 3 | 2% |
| Other | 19 | 11% |
| Unknown | 42 | 24% |
Attention Score in Context
This research output has an Altmetric Attention Score of 387. 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 25 June 2020.
All research outputs
#79,382
of 25,377,790 outputs
Outputs from Science
#2,794
of 82,914 outputs
Outputs of similar age
#742
of 276,308 outputs
Outputs of similar age from Science
#39
of 1,376 outputs
Altmetric has tracked 25,377,790 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 82,914 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 65.7. This one has done particularly well, scoring higher than 96% 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 276,308 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 99% of its contemporaries.
We're also able to compare this research output to 1,376 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 97% of its contemporaries.