Unsuitable habitat patches lead to severe underestimation of dynamics and gene flow in a zooplankton metapopulation.

Migration and re-colonization enable organisms to persist in metapopulations. Re-colonization success may be limited by the number of arriving migrants or by patch quality. In a well-studied rock pool Daphnia metapopulation, it is frequently assumed that re-colonization is limited by the number of arriving migrants, and that all patches are equally suitable for colonization.

Converging seasonal prevalence dynamics in experimental epidemics.

Background: Regular seasonal changes in prevalence of infectious diseases are often observed in nature, but the mechanisms are rarely understood. Empirical tests aiming at a better understanding of seasonal prevalence patterns are not feasible for most diseases and thus are widely lacking. Here, we set out to study experimentally the seasonal prevalence in an aquatic host-parasite system.

Health literacy of adults presenting to an urban ED.

Objective: The aim of the study was to assess the prevalence of limited health literacy in an urban emergency department (ED) and its association with sociodemographic variables.

Methods: This was a cross-sectional study of patients presenting to the ED of an urban county hospital. For 3 months, we screened a convenience sample of patients presenting to the ED.

Lactate and pH evaluation in exhausted humans with prolonged TASER X26 exposure or continued exertion.

Objective: Safety concerns about TASER Conducted Electrical Weapon (CEW) use and media reports of deaths after exposure have been expressed. CEWs are sometimes used on exhausted subjects to end resistance. The alternative is often a continued struggle.

Founder events as determinants of within-island and among-island genetic structure of Daphnia metapopulations.

The genetic structure of metapopulations offers insights into the genetic consequences of local extinction and recolonization. We studied allozyme variation in rock pool metapopulations of two species of waterfleas (Daphnia) with the aim to understand how these dynamics influence genetic differentiation. We screened 138 populations of D.