Los modos de vida marítimos que caracterizaron a los archipiélagos occidentales de Patagonia comenzaron su desarrollo a mediados del Holoceno medio. El registro arqueológico sugiere posibles orígenes tanto en el extremo sur como en el extremo norte del territorio insular. La propuesta de un núcleo ecotonal septentrional de maritización se fundamentó en el hallazgo de sitios con tempranas ocupaciones de especialización litoral, entre los que destacó el conchal de Puente Quilo-1. Este artículo presenta resultados de nuevas excavaciones realizadas con el objeto de precisar su cronología, historia ocupacional y relevancia en la comprensión del proceso de maritización y colonización de los archipiélagos. A través de su integración con investigaciones previas en el sitio, los nuevos datos muestran una secuencia de reocupación estrechamente ligada a cambios en el paisaje producto de la variación en los niveles marinos, y caracterizan un campamento con diversidad funcional y diferenciación de áreas de actividad, inserto en un contexto de expansión regional de grupos cazadores-recolectores marinos. Los atributos culturales y su cronología permiten robustecer la hipótesis de un núcleo de maritización en el norte de la franja archipelágica.

Migratory species rely on several distant sites during the annual cycle which makes their conservation more complex than that of non-migratory species. Even one of the most extensively studied migratory shorebirds - the Red Knot Calidris canutus - is currently ‘Near Threatened’ at the global level. Conflicting observations of migratory routes cast uncertainty on the subspecies classification and migratory connectivity of Red Knots in the Pacific coasts of the Americas. To fill essential information gaps, we present the first detailed population morphometrics of Red Knots during the non-breeding season in the southern Pacific coast, along with resightings of these birds throughout the Americas. We also estimated daily rate of weight gain during fuelling based on body mass at captures and known departure dates. Resightings demonstrate reliance on staging areas in both the Mid-continental and Atlantic flyways during the northward migration, and additionally in the Pacific Flyway during southward migration. In addition to the strong connection with several areas also used by C. c. rufa on the North American Atlantic coast, our results show morphometric differences within the ranges of both C. c. rufa and C. c. roselaari. Given the threats faced by Red Knots, the population in Chiloé Archipelago should be treated as a separate conservation unit within interhemispheric conservation programmes for endangered shorebirds within the Americas.

The present paper includes an historical briefing, a morphological description of blood polymorphism, and current use of the Chilote pony horse breed. Its characteristics differentiate it from other horse breeds present in Chile.

Historical records, phenotypic and genetic characteristics show that the ancestors of this breed were brought to Chiloé by the Spanish conquerors.

The actual population of the Chilote pony in Chiloé islands, as estimated by the present study, is not more than 300 horses. In order to maintain this genetic material it appears relevant to start with a conservation project for this horse in Chile.