552 research outputs found
Comparison of fish assemblages in two littoral habitats in a Neotropical morichal stream in Venezuela
Morichales are lowland streams in South American savannas with riparian forest dominated by the moriche palm (Mauritia flexuosa). We sampled littoral habitats from ten flooded vegetated patches (dominated by Mauritiella aculeate) and six sand banks in two months of the dry season (Feb-Mar 2005) in a stream in the savannas of Apure State, Venezuela. We collected samples that compromised 12,407 individual fishes of 107 species. Small-bodied fishes (\u3c 100 mm), representing diverse trophic and life history strategies, were abundant. The most abundant species were in the families Characidae and Cichlidae. Fish assemblages from flooded vegetated patches differed significantly from those on adjacent sand banks. High structural complexity along vegetated shoreline habitats of morichal streams likely contributes to species richness and affects assemblage composition
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Issue evolution and the remaking of partisan alignments in a European multiparty system: elite and mass repositioning in Denmark 1968-2011
Issue evolution is a well-established theoretical perspective in the analysis of long-term party competition and partisanship in the US. However, this perspective has rarely been used to analyze political elite effects on partisan polarization in European multiparty systems. Consequently, I apply the issue evolution perspective to polarization in a European multiparty system. I find an emergence of cultural issues in Denmark, where mass level polarization on cultural issues followed elite level polarization. Unlike two-party systems, niche parties drive issue evolution on the elite level, which is then followed by niche partisan polarization and, finally, mainstream party adaption. The findings illustrate the mechanisms of issue evolution in a European-style multiparty system and the role of niche parties
Targeted next generation sequencing approach identifies eighteen new candidate genes in normosmic hypogonadotropic hypogonadism and Kallmann Syndrome
The genetic basis is unknown for ∼60% of normosmic hypogonadotropic hypogonadism (nHH)/Kallmann syndrome (KS). DNAs from (17 male and 31 female) nHH/KS patients were analyzed by targeted next generation sequencing (NGS) of 261 genes involved in hypothalamic, pituitary, and/or olfactory pathways, or suggested by chromosome rearrangements. Selected variants were subjected to Sanger DNA sequencing, the gold standard. The frequency of Sanger-confirmed variants was determined using the ExAC database. Variants were classified as likely pathogenic (frameshift, nonsense, and splice site) or predicted pathogenic (nonsynonymous missense). Two novel FGFR1 mutations were identified, as were 18 new candidate genes including: AMN1, CCKBR, CRY1, CXCR4, FGF13, GAP43, GLI3, JAG1, NOS1, MASTL, NOTCH1, NRP2, PALM2, PDE3A, PLEKHA5, RD3, and TRAPPC9, and TSPAN11. Digenic and trigenic variants were found in 8/48 (16.7%) and 1/48 (2.1%) patients, respectively. NGS with confirmation by Sanger sequencing resulted in the identification of new causative FGFR1 gene mutations and suggested 18 new candidate genes in nHH/KS
Piecing Together the American Voting Puzzle: How Votersâ Personalities and Judgments of Issue Importance Mattered in the 2016 Presidential Election
In the wake of the 2016 election, which surprised pundits and voters on both the left and the right, there has been renewed interest in understanding what predicts American votersâ choices. In this article, we investigate the roles of personality and issue importance in how people voted in the 2016 U.S. election. In this longitudinal study of 403 MTurk workers who voted in the election, we assessed the relations between personality (openness, social dominance orientation, and national identity importance) and issue importance (group rights and social justice, economic rights, and individual and national rights), and voting for Clinton or Trump. Our results indicate that both individual differences and issue importance as measured in July 2016 predicted votes in November. We also found that the links between personality and voting were mediated by issue importance. Implications for political psychology and the study of personality, campaign issues, and voting behavior are discussed.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/146841/1/asap12157.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/146841/2/asap12157_am.pd
Marine nurseries and effective juvenile habitats: concepts and applications
Much recent attention has been focused on juvenile fish and invertebrate habitat use, particularly defining and identifying marine nurseries. The most significant advancement in this area has been the development of a standardized framework for assessing the relative importance of juvenile habitats and classifying the most productive as nurseries. Within this framework, a marine nursery is defined as a juvenile habitat for a particular species that contributes a greater than average number of individuals to the adult population on a per-unit-area basis, as compared to other habitats used by juveniles. While the nursery definition and framework provides a powerful approach to identifying habitats for conservation and restoration efforts, it can omit habitats that have a small per-unit-area contribution to adult populations, but may be essential for sustaining adult populations. Here we build on the nursery concept by developing a framework for evaluating juvenile habitats based on their overall contribution to adult populations, and introduce the concept of Effective Juvenile Habitat (EJH) to refer to habitats that make a greater than average overall contribution to adult populations.Craig P. Dahlgren, G. Todd Kellison, Aaron J. Adams, Bronwyn M. Gillanders, Matthew S. Kendall, Craig A. Layman, Janet A. Ley, Ivan Nagelkerken, Joseph E. Seraf
Marine nurseries and effective juvenile habitats
Craig A. Layman, Craig P. Dahlgren, G. Todd Kellison, Aaron J. Adams, Bronwyn M. Gillanders, Matthew S. Kendall, Janet A. Ley, Ivan Nagelkerken and Joseph E. Seraf
QUERIES 'N THEORIES: An instructional game on the DOT, DOT, DOT, ... approach to scientific method
QUERIES 'N THEORIES provides a parallel to the strong inference approach to scientific method — designing experiments, observing data, and theorizing. The reiterated use of the DOT approach (Design, Observe, Theorize) in the problem-solving required by the game mirrors the regular, systematic application of strong inference in some areas of science (e.g., high energy physics and molecular biology) that have moved ahead much more rapidly than others. Moreover, the game embodies and provides practive in two aspects of scientific theorizing and designing which John Platt has pointed out as central to scientific advance: (1) the usefulness of multiple hypotheses and (2) disproof as science's mode of advance.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/43862/1/11251_2004_Article_BF00150473.pd
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