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  1. 7741
    “…Accurately identifying species is a crucial step for developing conservation strategies for freshwater mussels, one of the most imperiled faunas in North America. This study uses genetic data to re‐examine species delineation in the genus Cyprogenia. …”
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    Incongruence between mtDNA and nuclear data in the freshwater mussel genus Cyprogenia (Bivalvia: Unionidae) and its impact on species delineation
  2. 7742
    “…The monarch’s multi-generational migration between overwintering grounds in central Mexico and the summer breeding grounds in the northern U.S. and southern Canada is celebrated in all three countries and creates shared management responsibilities across North America. Here we present a novel Bayesian multivariate auto-regressive state-space model to assess quasi-extinction risk and aid in the establishment of a target population size for monarch conservation planning. …”
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    Quasi-extinction risk and population targets for the Eastern, migratory population of monarch butterflies (Danaus plexippus)
  3. 7743
    “…Exotic plant invasions and chronic high levels of herbivory are two of the major biotic stressors impacting temperate forest ecosystems in eastern North America, and the two problems are often linked. …”
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    Long-Term Effects of White-Tailed Deer Exclusion on the Invasion of Exotic Plants: A Case Study in a Mid-Atlantic Temperate Forest
  4. 7744
    “…To overcome these limitations, country-based registries and multicenter research networks have been created in Europe and North America. Reliable epidemiological data on DILI in Latin America (LA), a region with a large variety of ethnic groups, were however lacking. …”
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    The Latin American DILI Registry Experience: A Successful Ongoing Collaborative Strategic Initiative
  5. 7745
    “…Frequency of DBC among adolescents in European countries and North America showed a more uniform pattern in 2010 as compared to patterns in 2002. …”
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    Trends from 2002 to 2010 in Daily Breakfast Consumption and its Socio-Demographic Correlates in Adolescents across 31 Countries Participating in the HBSC Study
  6. 7746
    “…We employed nuclear microsatellites (single sequence repeat (SSR)) and candidate gene single-nucleotide polymorphism markers (SNPs) to characterize the genetic architecture and patterns of interspecific gene flow in the Picea glauca × P. engelmannii hybrid zone across a broad latitudinal (40–60 degrees) and elevational (350–3500 m) range in western North America. Our results revealed a wide and complex hybrid zone with broad ancestry levels and low interspecific heterozygosity, shaped by asymmetric advanced-generation introgression, and low reproductive barriers between parental species. …”
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    Genetic architecture and genomic patterns of gene flow between hybridizing species of Picea
  7. 7747
    “…PROCEDURE: A partnership was established between investigators in North America and sub‐Saharan Africa, to develop a prospective multicenter research protocol designed to provide data on the safety, feasibility, and benefits of hydroxyurea for children with SCA. …”
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    Hydroxyurea Therapy for Children With Sickle Cell Anemia in Sub‐Saharan Africa: Rationale and Design of the REACH Trial
  8. 7748
    “…We analyzed whether different migrant passerine species of North America present climatic preferences during arrival to and departure from their wintering areas. …”
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    Climatic patterns in the establishment of wintering areas by North American migratory birds
  9. 7749
    “…We use data from 16 grassland experiments across North America and Europe that manipulated plant species richness and one of two essential resources—soil nutrients or water—to assess the direction and strength of the interaction between plant diversity and resource alteration on above-ground productivity and net biodiversity, complementarity, and selection effects. …”
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    Plant diversity effects on grassland productivity are robust to both nutrient enrichment and drought
  10. 7750
    “…We finely sampled natural populations of Arabidopsis lyrata from the Great Lakes region of North America (A. l. lyrata) and broadly sampled six European countries (A. l. petraea) to investigate allelic variation of two R-genes (RPM1 and WRR4) and neutral genetic markers (Restriction Associated DNA sequences and microsatellites) in relation to mating system, phylogeographic structure and subspecies divergence. …”
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    R-gene variation across Arabidopsis lyrata subspecies: effects of population structure, selection and mating system
  11. 7751
    “…METHODS AND RESULTS: We conducted a retrospective cohort study using the Pediatric Heart Network Single Ventricle Reconstruction Trial public use dataset, which includes data on infants with single right ventricle congenital heart disease randomized to receive either a Blalock‐Taussig shunt or right ventricle‐to‐pulmonary artery shunt during the Norwood procedure at 15 institutions in North America from 2005 to 2008. Parametric survival models were used to compare the risk of interstage mortality between those discharged to home on digoxin versus those discharged to home not on digoxin, adjusting for center volume, ascending aorta diameter, shunt type, and socioeconomic status. …”
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    Association of Digoxin With Interstage Mortality: Results From the Pediatric Heart Network Single Ventricle Reconstruction Trial Public Use Dataset
  12. 7752
    “…In March 2013, the public health authorities of China reported three cases of laboratory confirmed human infection with avian influenza A (H7N9) virus, and subsequently there have been many cases reported across South East Asia and recently in North America. Most patients experience severe respiratory illness, and morbidity with mortality rates near 40%. …”
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    MicroRNA Regulation of Human Genes Essential for Influenza A (H7N9) Replication
  13. 7753
    “…The ST1 is associated with highly virulent strains. In North America, the strains most commonly isolated belong to ST25 and ST28, which are respectively moderately and weakly virulent in a mouse model. …”
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    Impact of serotype and sequence type on the preferential aerosolization of Streptococcus suis
  14. 7754
    “…However, only tetraploids have been found in its introduced range in North America, where C. stoebe has become a most prominent plant invader. …”
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    Neighbour Origin and Ploidy Level Drive Impact of an Alien Invasive Plant Species in a Competitive Environment
  15. 7755
    “…Here, we use observations of 389 time-series of 83 species and complexes from 61 study areas across North America to test the effects of 4 of the major hypothesized drivers of declines. …”
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    Quantitative evidence for the effects of multiple drivers on continental-scale amphibian declines
  16. 7756
    “…Concern over stratospheric ozone depletion has prompted several government agencies in North America to establish networks of spectroradiometers for monitoring solar ultraviolet irradiance at the surface of the Earth. …”
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    The 1996 North American Interagency Intercomparison of Ultraviolet Monitoring Spectroradiometers
  17. 7757
    “…Concern over stratospheric ozone depletion has prompted several government agencies in North America to establish networks of spectroradiometers for monitoring solar ultraviolet irradiance at the surface of the Earth. …”
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    The 1995 North American Interagency Intercomparison of Ultraviolet Monitoring Spectroradiometers
  18. 7758
    “…BACKGROUND: In North America, more than 800,000 youth are registered in organized ice hockey leagues. …”
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    Aggression, Violence and Injury in Minor League Ice Hockey: Avenues for Prevention of Injury
  19. 7759
    “…In 2013, a 14 g serving of spread contained on average 7.1 g fat and 0.2 g trans-fatty acids and provided 22% and 15% of the daily amounts recommended for male adults in North America of omega-3 α-linolenic acid and omega-6 linoleic acid, respectively. …”
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    Fat composition of vegetable oil spreads and margarines in the USA in 2013: a national marketplace analysis
  20. 7760
    “…Spiders of the family Nesticidae are members of cave communities around the world with cave-obligate (troglobiotic) species known from North America, Europe, Asia and the Indo-Pacific. A radiation of Nesticus (Araneae: Nesticidae) in the southern Appalachians includes ten troglobiotic species. …”
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    Reproductive Seasonality in Nesticus (Araneae: Nesticidae) Cave Spiders
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