Aquilegia, Vol. 28 No. 1, January-February 2004: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1101/thumbnail.jp

Evidence for over-dispersion in the distribution of clinical malaria episodes in children.

BACKGROUND: It may be assumed that patterns of clinical malaria in children of similar age under the same level of exposure would follow a Poisson distribution with no over-dispersion. Longitudinal studies that have been conducted over many years suggest that some children may experience more episodes of clinical malaria than would be expected. The aim of this study was to identify this group of children and investigate possible causes for this increased susceptibility. METHODOLOGY AND PRINCIPAL FINDINGS: Using Poisson regression, we chose a group of children whom we designated as 'more susceptible' to malaria from 373 children under 10 years of age who were followed up for between 3 to 5 years from 1998-2003. About 21% of the children were categorized as 'more susceptible' and although they contributed only 23% of the person-time of follow-up, they experienced 55% of total clinical malaria episodes. Children that were parasite negative at all cross-sectional survey were less likely to belong to this group [AOR = 0.09, (95% CI: 0.14-0.61), p = 0.001]. CONCLUSIONS AND SIGNIFICANCE: The pattern of clinical malaria episodes follows a negative binomial distribution. Use of lack of a clinical malaria episode in a certain time period as endpoints for intervention or immunological studies may not adequately distinguish groups who are more or less immune. It may be useful in such studies, in addition to the usual endpoint of the time to first episode, to include end points which take into account the total number of clinical episodes experienced per child

Comentario sobre el género Leptochloa P. Beauv. (Poaceae, Eragrostideae) en Extremadura y Andalucía (España)

Comments on the genus Leptochloa P. Beauv. (Poaceae, Eragrostideae) in Extremadura and Andalusia (Spain) Palabras clave. Nuevas manifestaciones, Leptochloa P. Beauv., Poaceae, Extremadura, Andalucía (España). Key words. New records, Leptochloa P. Beauv., Poaceae, Extremadura, Andalusia (Spain)

Aquilegia, Vol. 30 No. 3, June-July 2006, Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1116/thumbnail.jp

Aquilegia, Vol. 32 No. 2, Summer 2008, Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1124/thumbnail.jp

Aquilegia, Vol. 24 No. 3, May-June 2000: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1180/thumbnail.jp

Aquilegia, Vol. 26 No. 4, July-August 2002: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1094/thumbnail.jp

Aquilegia, Vol. 32 No. 1, Spring 2008, Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1123/thumbnail.jp

Isolation of Metrosideros (`Ohi`a) Taxa on O`ahu Increases with Elevation and Extreme Environments

Species radiations should be facilitated by short generation times and limited dispersal among discontinuous populations. Hawaii’s hyper-diverse, landscape-dominant tree, Metrosideros, is unique among the islands’ radiations for its massive populations that occur continuously over space and time within islands, its exceptional capacity for gene flow by both pollen and seed, and its extended life span (ca. \u3e650 years). Metrosideros shows the greatest phenotypic and microsatellite DNA diversity on O`ahu, where taxa occur in tight sympatry or parapatry in mesic and montane wet forest on 2 volcanoes. We document the nonrandom distributions of 12 taxa (including unnamed morphotypes) along elevation gradients, measure phenotypes of ~6-year-old common-garden plants of 8 taxa to verify heritability of phenotypes, and examine genotypes of 476 wild adults at 9 microsatellite loci to compare the strengths of isolation across taxa, volcanoes, and distance. All 8 taxa retained their diagnostic phenotypes in the common garden. Populations were isolated by taxon to a range of degrees (pairwise FST between taxa: 0.004–0.267), and there was no pattern of isolation by distance or by elevation; however, significant isolation between volcanoes was observed within monotypic species, suggesting limited gene flow between volcanoes. Among the infraspecific taxa of Metrosideros polymorpha, genetic diversity and isolation significantly decreased and increased, respectively, with elevation. Overall, 5 of the 6 most isolated taxa were associated with highest elevations or otherwise extreme environments. These findings suggest a principal role for selection in the origin and maintenance of the exceptional diversity that occurs within continuous Metrosideros stands on O`ahu

Koinonia

College Student IssuesCampus Suicide: Lessons Learned, Caryn Grimstead, Bob Neideck, Ann Snow, and Skip Trudeau Conference SpotlightOne Church Many Tribes: Following Jesus the Way God Made You, Richard Twiss Pursuing the Pearl, Ken Fong Residence Life & BeyondBuilding Inclusive Communities in the Residence Hall, Stephen J. Pasiciel Faculty Involvement in Student Development: Teaching Does Not End in the Classroom, Neil Friesland FeaturesThe President\u27s Corner Editor\u27s Disk ACSD Ballot NEW COLUMN: Thinking Theologically, Todd Ream My Senior Year; A Reflection on the First Four Years, Adela Huffordhttps://pillars.taylor.edu/acsd_koinonia/1020/thumbnail.jp