Landscape, Nature, Nationhood: A Historical Geography of Ruhuna (Yala) National Park

Resumen: En el espacio central de la raya entre Galicia y el Norte de Portugal se extiende el Gerês/Xurés. Este ámbito territorial está conformado por dos Parques, uno Nacional en Portugal y otro Natural en Galicia. El presente artículo aporta los mimbres para una geografía histórica de este ámbito, en clave de región transfronteriza. La metodología aúna trabajo de campo (entrevistas semiestructuradas) y análisis de diversas fuentes de información: libros, documentos oficiales, artículos, páginas web y documentación de archivo.Palabras clave: Geografía histórica, territorio, frontera, región transfronteriza, espacio natural protegido transfronterizo,Galicia/Portugal.Abstract: The Gerês/Xurés region is located in the central area of the Galician-North Portuguese borderlands. The territory encompasses two parks: a national park in Portugal, and a natural park in Galicia. In this article, a historical geography of the area, under the theoretical framework of cross-border region. The methods combine fieldwork (semi-structured interviews) and analysis of different sources: books, official documents, articles, web pages and archives.Key words: Historical geography, territory, boundary, crossborder región, Transboundary Protected Area (TBPA), Galicia/Portugal.

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Ultrastructural Localization of Phycocyanin in the Acidophilic, Thermophilic Alga, Cyanidium Caldarium

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100072757 ◽

1973 ◽

Vol 31 ◽

pp. 462-463

Author(s):

M. R. Edwards ◽

J. D. Mainwaring

Keyword(s):

Yellowstone National Park ◽

National Park ◽

Ultrastructural Localization ◽

Review Of Literature ◽

Cyanidium Caldarium ◽

Taxonomic Rank ◽

Thin Sections ◽

Standard Methods ◽

Laboratory Cultures

Although the general ultrastructure of Cyanidium caldarium, an acidophilic, thermophilic alga of questionable taxonomic rank, has been extensively studied (see review of literature in reference 1), some peculiar ultrastructural features of the chloroplast of this alga have not been noted by other investigators.Cells were collected and prepared for thin sections at the Yellowstone National Park and were also grown in laboratory cultures (45-52°C; pH 2-5). Fixation (glutaraldehyde-osmium), dehydration (ethanol), and embedding (Epon 812) were accomplished by standard methods. Replicas of frozenfracture d- etched cells were obtained in a Balzers apparatus. In addition, cells were examined after disruption in a French Press.

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