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Mendeley readers
Attention Score in Context
| Title |
Variation in a sparrow's reproductive success with rainfall: food and predator-mediated processes
|
|---|---|
| Published in |
Oecologia, November 2002
|
| DOI | 10.1007/s00442-002-1040-3 |
| Pubmed ID | |
| Authors |
Scott A. Morrison, Douglas T. Bolger |
| Abstract |
From 1997 to 1999, we monitored the reproductive success of individual rufous-crowned sparrows (Aimophila ruficeps) in coastal sage scrub habitat of southern California, USA. Annual reproductive output of this ground-nesting species varied strongly with annual variation in rainfall, attributed to the El Niño-Southern Oscillation. Birds fledged 3.0 young per breeding pair in 1997, when rainfall was near the long-term mean, 5.1 offspring per pair in 1998, a wet El Niño year, and 0.8 fledglings per pair in 1999, a dry La Niña year. Variation in many components of reproductive output was consistent with the hypothesis that food availability was positively correlated with rainfall. However, the factor most responsible for the high reproductive output in 1998 was low early season nest predation which, combined with favorable nesting conditions, enabled more pairs to multiple-brood. Cool, rainy El Niño conditions may have altered the activity of snakes, the main predator of these nests, in the early season of 1998. Overall, more of the annual variation in fecundity was attributable to variation in within-season components of reproductive output (mean number of nests fledged per pair) than to within-nest components (mean brood size). Annual variation in rufous-crowned sparrow fecundity appears to be driven primarily by food resource-mediated processes in La Niña years and by predator-mediated processes in El Niño years. |
Mendeley readers
The data shown below were compiled from readership statistics for 158 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 4 | 3% |
| Portugal | 2 | 1% |
| Romania | 2 | 1% |
| Germany | 1 | <1% |
| United Kingdom | 1 | <1% |
| France | 1 | <1% |
| Sweden | 1 | <1% |
| New Zealand | 1 | <1% |
| Unknown | 145 | 92% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 40 | 25% |
| Student > Ph. D. Student | 35 | 22% |
| Student > Master | 22 | 14% |
| Student > Bachelor | 12 | 8% |
| Professor | 9 | 6% |
| Other | 22 | 14% |
| Unknown | 18 | 11% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 91 | 58% |
| Environmental Science | 36 | 23% |
| Arts and Humanities | 2 | 1% |
| Biochemistry, Genetics and Molecular Biology | 2 | 1% |
| Earth and Planetary Sciences | 2 | 1% |
| Other | 5 | 3% |
| Unknown | 20 | 13% |
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 19 March 2023.
All research outputs
#7,749,471
of 23,565,002 outputs
Outputs from Oecologia
#1,720
of 4,287 outputs
Outputs of similar age
#16,865
of 49,911 outputs
Outputs of similar age from Oecologia
#2
of 10 outputs
Altmetric has tracked 23,565,002 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 4,287 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 7.1. This one is in the 34th percentile – i.e., 34% 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 49,911 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 11th percentile – i.e., 11% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 10 others from the same source and published within six weeks on either side of this one. This one has scored higher than 8 of them.