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Genetic diversity and gene flow decline with elevation in montane mayflies

Overview of attention for article published in Heredity, May 2017
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  • Above-average Attention Score compared to outputs of the same age (62nd percentile)
  • Average Attention Score compared to outputs of the same age and source

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Title
Genetic diversity and gene flow decline with elevation in montane mayflies
Published in
Heredity, May 2017
DOI 10.1038/hdy.2017.23
Pubmed ID
Authors

N R Polato, M M Gray, B A Gill, C G Becker, K L Casner, A S Flecker, B C Kondratieff, A C Encalada, N L Poff, W C Funk, K R Zamudio

Abstract

Montane environments around the globe are biodiversity 'hotspots' and important reservoirs of genetic diversity. Montane species are also typically more vulnerable to environmental change than their low-elevation counterparts due to restricted ranges and dispersal limitations. Here we focus on two abundant congeneric mayflies (Baetis bicaudatus and B. tricaudatus) from montane streams over an elevation gradient spanning 1400 m. Using single-nucleotide polymorphism genotypes, we measured population diversity and vulnerability in these two species by: (i) describing genetic diversity and population structure across elevation gradients to identify mechanisms underlying diversification; (ii) performing spatially explicit landscape analyses to identify environmental drivers of differentiation; and (iii) identifying outlier loci hypothesized to underlie adaptive divergence. Differences in the extent of population structure in these species were evident depending upon their position along the elevation gradient. Heterozygosity, effective population sizes and gene flow all declined with increasing elevation, resulting in substantial population structure in the higher elevation species (B. bicaudatus). At lower elevations, populations of both species are more genetically similar, indicating ongoing gene flow. Isolation by distance was detected at lower elevations only, whereas landscape barriers better predicted genetic distance at higher elevations. At higher elevations, dispersal was restricted due to landscape effects, resulting in greater population isolation. Our results demonstrate differentiation over small spatial scales along an elevation gradient, and highlight the importance of preserving genetic diversity in more isolated high-elevation populations.Heredity advance online publication, 10 May 2017; doi:10.1038/hdy.2017.23.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 110 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Netherlands 1 <1%
Colombia 1 <1%
Portugal 1 <1%
Unknown 107 97%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 22 20%
Researcher 16 15%
Student > Master 15 14%
Student > Bachelor 14 13%
Student > Postgraduate 7 6%
Other 15 14%
Unknown 21 19%
Readers by discipline Count As %
Agricultural and Biological Sciences 47 43%
Environmental Science 16 15%
Biochemistry, Genetics and Molecular Biology 14 13%
Business, Management and Accounting 1 <1%
Mathematics 1 <1%
Other 5 5%
Unknown 26 24%
Attention Score in Context

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 16 May 2017.
All research outputs
#7,280,433
of 22,971,207 outputs
Outputs from Heredity
#1,011
of 2,162 outputs
Outputs of similar age
#115,204
of 310,791 outputs
Outputs of similar age from Heredity
#8
of 17 outputs
Altmetric has tracked 22,971,207 research outputs across all sources so far. This one has received more attention than most of these and is in the 67th percentile.
So far Altmetric has tracked 2,162 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 9.2. This one has gotten more attention than average, scoring higher than 51% 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 310,791 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 62% of its contemporaries.
We're also able to compare this research output to 17 others from the same source and published within six weeks on either side of this one. This one is in the 47th percentile – i.e., 47% of its contemporaries scored the same or lower than it.