As the emergence of invasive pathogens and their impacts on ecological communities increases, so has the interest in understanding how landscape pattern (in other words the configuration and composition of suitable habitat) affects their establishment and spread. Plant pathogen invasions are inherently spatial, but few studies have demonstrated the role of landscape pattern on disease dynamics....

In a case study, we evaluated observers’ accuracy in detecting Phytophthora ramorum and their ability to estimate percentage of infested area in coast live oak (Quercus agrifolia) stands in California. The study compared visual detection of symptoms on California bay laurel (Umbellularia californica) and oaks with results from three permanent 1-hectare plots. Each plot had 100 percent survey of...

Semi-artificial diets consisting of redbay (Persea borbonia (L.) Spreng.; Laurales: Lauraceae) sawdust and various nutrients were tested for rearing Xyleborus glabratus Eichoff (Coleoptera: Curculionidae: Scolytinae) in vitro. Comparison of 2 media, modified and standard, adapted from Biedermann et al. (2009) showed that the more solid consistency of the modified medium resulted in greater rate...

Sudden oak death is an emerging forest disease caused by the invasive pathogen Phytophthora ramorum. Genetic and environmental factors affecting susceptibility to P. ramorum in the key inoculum-producing host tree Umbellularia californica (bay laurel) were examined across a heterogeneous landscape in California, USA. Laboratory susceptibility trials were conducted on detached leaves and assesse...

En 1941 la editorial Séneca de México fundada por José Bergamín, publicó, bajo dirección del poeta Xavier Villaurrutia y con colaboración Octavio Paz, Emilio Prados Juan Gil-Albert, Laurel, antología poesía moderna en lengua española, que ha sido considerada como el epílogo a una larga tradición antológica ambos lados Atlántico heredera publicada pocos años antes Federico Onís. Este trabajo, ca...

The chemical composition of laurel leaves and fruits essential oils (content of 0.917 and 0.747%, respectively) and laurel leaves extracts obtained at different pressures/temperatures by supercritical fluid extraction (SFE) were studied by GC-MS. The predominant compound in the essential oils and in CO2 extracts obtained at pressures/temperatures of 100 bar/40°C and 250 bar/40°C was 1,8-cineole...