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Spatio-temporal dynamics of pneumonia in bighorn sheep

Overview of attention for article published in Journal of Animal Ecology, February 2013
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  • Good Attention Score compared to outputs of the same age (71st percentile)

Mentioned by

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2 Wikipedia pages
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1 video uploader

Citations

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54 Dimensions

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92 Mendeley
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Title
Spatio-temporal dynamics of pneumonia in bighorn sheep
Published in
Journal of Animal Ecology, February 2013
DOI 10.1111/1365-2656.12031
Pubmed ID
Authors

E. Frances Cassirer, Raina K. Plowright, Kezia R. Manlove, Paul C. Cross, Andrew P. Dobson, Kathleen A. Potter, Peter J. Hudson

Abstract

1. Bighorn sheep mortality related to pneumonia is a primary factor limiting population recovery across western North America, but management has been constrained by an incomplete understanding of the disease. We analysed patterns of pneumonia-caused mortality over 14 years in 16 interconnected bighorn sheep populations to gain insights into underlying disease processes. 2. We observed four age-structured classes of annual pneumonia mortality patterns: all-age, lamb-only, secondary all-age and adult-only. Although there was considerable variability within classes, overall they differed in persistence within and impact on populations. Years with pneumonia-induced mortality occurring simultaneously across age classes (i.e. all-age) appeared to be a consequence of pathogen invasion into a naïve population and resulted in immediate population declines. Subsequently, low recruitment due to frequent high mortality outbreaks in lambs, probably due to association with chronically infected ewes, posed a significant obstacle to population recovery. Secondary all-age events occurred in previously exposed populations when outbreaks in lambs were followed by lower rates of pneumonia-induced mortality in adults. Infrequent pneumonia events restricted to adults were usually of short duration with low mortality. 3. Acute pneumonia-induced mortality in adults was concentrated in fall and early winter around the breeding season when rams are more mobile and the sexes commingle. In contrast, mortality restricted to lambs peaked in summer when ewes and lambs were concentrated in nursery groups. 4. We detected weak synchrony in adult pneumonia between adjacent populations, but found no evidence for landscape-scale extrinsic variables as drivers of disease. 5. We demonstrate that there was a >60% probability of a disease event each year following pneumonia invasion into bighorn sheep populations. Healthy years also occurred periodically, and understanding the factors driving these apparent fade-out events may be the key to managing this disease. Our data and modelling indicate that pneumonia can have greater impacts on bighorn sheep populations than previously reported, and we present hypotheses about processes involved for testing in future investigations and management.

Mendeley readers

The data shown below were compiled from readership statistics for 92 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 3 3%
Mexico 2 2%
South Africa 1 1%
Unknown 86 93%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 22 24%
Student > Master 19 21%
Researcher 16 17%
Student > Bachelor 8 9%
Other 8 9%
Other 12 13%
Unknown 7 8%
Readers by discipline Count As %
Agricultural and Biological Sciences 55 60%
Environmental Science 10 11%
Veterinary Science and Veterinary Medicine 8 9%
Biochemistry, Genetics and Molecular Biology 3 3%
Unspecified 1 1%
Other 5 5%
Unknown 10 11%

Attention Score in Context

This research output has an Altmetric Attention Score of 4. 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 23 November 2015.
All research outputs
#3,429,246
of 12,353,464 outputs
Outputs from Journal of Animal Ecology
#949
of 1,777 outputs
Outputs of similar age
#39,722
of 144,345 outputs
Outputs of similar age from Journal of Animal Ecology
#25
of 32 outputs
Altmetric has tracked 12,353,464 research outputs across all sources so far. This one has received more attention than most of these and is in the 71st percentile.
So far Altmetric has tracked 1,777 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 11.6. This one is in the 45th percentile – i.e., 45% 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 144,345 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 71% of its contemporaries.
We're also able to compare this research output to 32 others from the same source and published within six weeks on either side of this one. This one is in the 18th percentile – i.e., 18% of its contemporaries scored the same or lower than it.