RESUMENLa Estación Biológica Senda Darwin (EBSD) constituye un centro de investigación inmerso en el paisaje rural del norte de la Isla de Chiloé (42º S), donde fragmentos del bosque siempreverde original coexisten con praderas de uso ganadero, turberas de Sphagnum, matorrales sucesionales, plantaciones de Eucalyptus y otras formaciones de origen antropogénico. Desde 1994 hemos realizado estudios de largo plazo centrados en algunas especies de plantas (e.g., Pilgerodendron uviferum D. Don) y animales (e.g., Aphrastura spinicauda Gmelin, Dromiciops gliroides [Thomas]) catalogados como amenazados o escasamente conocidos y en ecosistemas nativos de importancia regional y global (e.g., turberas de Sphagnum, bosque Valdiviano y Nordpatagónico). Las investigaciones han considerado las respuestas de las especies y de los ecosistemas frente al cambio antropogénico del paisaje y cambio climático, así como los efectos de diferentes formas de manejo. Este escenario es semejante al de otras regiones de Chile y Latinoamérica lo que da generalidad a nuestros resultados y modelos. En este período, investigadores asociados a la EBSD han producido más de un centenar de publicaciones en revistas nacionales e internacionales y 30 tesis de pre y postgrado. Entendiendo el papel clave de los seres humanos en los procesos ecológicos de la zona rural, la EBSD ha desarrollado un programa de educación ecológica y vinculación del avance científico con la sociedad local y nacional. La integración de la EBSD a la naciente red de Sitios de Estudios Socio-Ecológicos de Largo Plazo en Chile consolidará y fortalecerá la investigación básica y aplicada que realizamos para proyectarla hacia la siguiente década. and animals (e.g., Aphrastura spinicauda, Dromiciops glirioides) that are considered threatened, poorly known or important for their ecological functions in local ecosystems, and on ecosystems of regional and global relevance (e.g., Sphagnum bogs, North Patagonian and Valdivian rain forests). Research has assessed the responses of species and ecosystems to anthropogenic land-use change, climate change, and the impact of management. During this period, more than 100 scientific publications in national and international journals, and 30 theses (graduate and undergraduate) have been produced by scientists and students associated with SDBS. Because of our understanding of the key role that humans play in ecological processes at this agricultural frontier, since the establishment of SDBS we have been committed to creative research on the communication of science to society and ecological education. The integration of SDBS to the nascent Chilean network of long-term socio-ecological research will consolidate and strengthen basic and applied research to project our work into the next decade.Key words: biodiversity, education, long-term socio-ecological research, private protected area, temperate rainforests. INTRODUCCIÓNLos bosques templados del sur de Sudamérica, distribuidos entre los 35° y 55º S en el margen occidental del continente, se carac...

Drimys winteri and Myrtaceae native swamp forests growing in twenty five ravines in the coastal mountain range (VII Region of Chile) were studied. The study area is located between río Mataquito (35°7' L.S. and 72°5' L.W.) and Tregualemu (35°59' L.S. and 72°41' L.W.).101 samples were studied using the European phytosociological method. In the initial table, the number frequency, cover and the value of relative importance of the species were calculated. The degree of association of the species with the dominant tree, Drimys winteri, and the phytosociological similarity, among the samples were determined. Beside the geographical origin, the life forms of the species and their biological spectrum were studied. Also, the layers of the stand were analyzed. Lastly, plant associations were determined using the differential species of the vegetational table.Of the 158 species appearing in the phytosociological table 72% are native. The forest are stratified. Their degra dation is confirmed by the abundant herbs, climbers and, as well aloctonos and species of the nearest neighbor and secondary communities. The shrubs layer and herbaceous vegetation exceeded in number the species at the tree layer. It was confirmed that humid coastal gorges give refuge to austral floristic and endemic elements of the region, as well as to typical elements of the mesomorphic Chilean zone. Six forest syntaxa are phytosociologically described: Myrceu genietum exsuccae, Myrceugenietum exsuccae variante con Amomyrtus luma, Myrceugenietum exsuccae with Luma gay ana, Temo-Myrceugenietum exsuccae,, Scirpo-Nothofagetum antarcticae and Pitavio-Myrceugenietum excuccae. The two variants and the last association are new for the science.

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