Species-specific population structure in rock-specialized sympatric cichlid species in Lake Tanganyika, East Africa.

Species richness and geographical phenotypic variation in East African lacustrine cichlids are often correlated with ecological specializations and limited dispersal. This study compares mitochondrial and microsatellite genetic diversity and structure among three sympatric rock-dwelling cichlids of Lake Tanganyika, Eretmodus cyanostictus, Tropheus moorii, and Ophthalmotilapia ventralis. The species represent three endemic, phylogenetically distinct tribes (Eretmodini, Tropheini, and Ectodini), and display divergent ecomorphological and behavioral specialization. Sample locations span both continuous, rocky shoreline and a potential dispersal barrier in the form of a muddy bay. High genetic diversity and population differentiation were detected in T. moorii and E. cyanostictus, whereas much lower variation and structure were found in O. ventralis. In particular, while a 7-km-wide muddy bay curtails dispersal in all three species to a similar extent, gene flow along mostly continuous habitat appeared to be controlled by distance in E. cyanostictus, further restricted by site philopatry and/or minor habitat discontinuities in T. moorii, and unrestrained in O. ventralis. In contrast to the general pattern of high gene flow along continuous shorelines in rock-dwelling cichlids of Lake Malawi, our study identifies differences in population structure among stenotopic Lake Tanganyika species. The amount of genetic differentiation among populations was not related to the degree of geographical variation of body color, especially since more phenotypic variation is observed in O. ventralis than in the genetically highly structured E. cyanostictus.

Rockfall monitoring by Terrestrial Laser Scanning ¿ case study of the basaltic rock face at Castellfollit de la Roca (Catalonia, Spain)

This case study deals with a rock face monitoring in urban areas using a Terrestrial Laser Scanner. The pilot study area is an almost vertical, fifty meter high cliff, on top of which the village of Castellfollit de la Roca is located. Rockfall activity is currently causing a retreat of the rock face, which may endanger the houses located at its edge. TLS datasets consist of high density 3-D point clouds acquired from five stations, nine times in a time span of 22 months (from March 2006 to January 2008). The change detection, i.e. rockfalls, was performed through a sequential comparison of datasets. Two types of mass movement were detected in the monitoring period: (a) detachment of single basaltic columns, with magnitudes below 1.5 m3 and (b) detachment of groups of columns, with magnitudes of 1.5 to 150 m3. Furthermore, the historical record revealed (c) the occurrence of slab failures with magnitudes higher than 150 m3. Displacements of a likely slab failure were measured, suggesting an apparent stationary stage. Even failures are clearly episodic, our results, together with the study of the historical record, enabled us to estimate a mean detachment of material from 46 to 91.5 m3 year¿1. The application of TLS considerably improved our understanding of rockfall phenomena in the study area.

Trace element chemistry and U-Pb dating of zircons from oceanic gabbros and their relationship with whole rock composition (Lanzo, Italian Alps)

The U-Pb ages and the trace element content of zircon U-Pb along with major and trace element whole rock data on gabbroic dikes from the Lanzo lherzolitic massif, N-Italy, have been determined to constrain crustal accretion in ocean-continent transition zones. Three Fe-Ti gabbros were dated from the central and the southern part of the massif providing middle Jurassic ages of 161 +/- 2, 158 +/- 2 and 163 +/- 1 Ma, which argue for magmatic activity over few millions of years. Zircon crystals are characterized by high but variable Th/U ratios, rare earth element patterns enriched in heavy rare earths, pronounced positive Ce and negative Eu-anomalies consistent with crystallization after substantial plagioclase fractionation. The zircon trace element composition coupled with whole rock chemistry was used to reconstruct the crystallization history of the gabbros. A number of gabbros crystallized in situ, and zircon precipitated from trapped, intercumulus liquid, while other gabbros represent residual liquids that were extracted from a cumulus pile and crystallized along syn-magmatic shear zones. We propose a model in which the emplacement mechanism of gabbroic rocks in ocean-continent transition zones evolves from in situ crystallization to stratified crystallization with efficient extraction of residual liquid along syn-magmatic shear zones. Such an evolution of the crystallization history is probably related to the thermal evolution of the underlying mantle lithosphere.

Théâtre : L'oncle vengé - Le doute et la croyance - Le capitaine Rock / J.-M. Cournier

Comprend : L'oncle vengé : [comédie en 3 actes] (Moscou, 1854) - Le doute et la croyance : [drame en 1 acte en vers] (Odéon, 19 août 1848) - Le capitaine Rock, ou L'Irlande en 1798 : [étude dramatique en 5 actes en vers avec 1 prologue]

Contemporary engagements within corridors of the past: temporal elasticity, graffiti, and the materiality of St. Rock Street, Barcelona

In a medieval Barcelonan side-street, urine, rubbish, and a bewildering array of graphic imagery splatters the narrowing walls between two major thoroughfares. A contemporary conflict between residents, unknown artists and others is played out using banners, bottles, stickers, posters, stencils, spray paint, and bodily substances. In this shadowed liminality, local and global debates are superimposed upon substructures constructed from disease, prostitution, and the Saint of the Plague. The continuing urban struggle constitutes temporal statements of dirt and purity, violence and humour, dominance and resistance, death and salvation. Like the renovated facades masking the crumbling remains of structures long neglected, the government’s literal whitewashing of the art is a temporal cover-up of a discursive symptom stretching from deeply embedded preconditions. However, from his niche in the angular bend of the alley bearing his name, the statue of St. Rock remains unblinkingly staring, raised above the contestations expressed below.

Japanin musiikkimarkkinat : Japanin pop- ja rock-markkinoiden erityispiirteet suomalaisen musiikin näkökulmasta

Tämän opinnäytetyön tavoite on selvittää suomalaisen pop- ja rock-musiikin vientimahdollisuuksia yhteen maailman kiinnostavimpaan ja ostovoimaisimpaan maahan, Japaniin, ja tuoda esille sen luonnetta suhteessa suomalaiseen musiikkiin. Opinnäytetyön teoriaosa selvittää Suomen tämän hetkistä musiikkiviennin tilannetta ja syitä siihen, miksi Japanin markkinat on erittäin kiinnostava alue viennin saralla. Kirjallinen viitekehys työlle muodostuu pääasiassa kootuista musiikkialan raporteista, tilastoista ja artikkeleista. Empiirisessä osassa keskeistä tutkimusmateriaalia ovat Tokion Suomen Instituutissa kolmen kuukauden työharjoittelun yhteydessä kertyneet kokemukset ja asiantuntijahaastatteluaineisto. Nämä avaavat Japanin musiikkimarkkinoita luoden parempaa kuvaa siellä vallitsevista kilpailuolosuhteista, maan tavoista ja kiinnostuksen kohteista, sekä japanilaisten mielikuvaa suomalaisesta musiikista. Suomessa musiikkimarkkinat ovat hyvin pienet, mutta niiden laajentamiseen viennillä on alettu keskittyä yhä enenevissä määrin. Koska Japanissa on maailman toiseksi suurimmat musiikkimarkkinat, se on erittäin varteenotettava kohde myös suomalaisen musiikin viennille. Vaikka suomalainen musiikki on toistaiseksi suhteellisen tuntematonta suurelle osalle japanilaisista, suhtaudutaan siihen positiivisesti. Japanilaisten mielestä Suomesta tuleva musiikki on verrattuna moniin muihin maihin paljon omaleimaisempaa ja tämä tekee siitä kiinnostavan. Viennissä ongelmia kuitenkin luovat kielimuuri ja japanilaisten kulttuurisidonnaiset toimintatavat. Ilman hyviä suhteita toiminta Japanin musiikkialan kentällä on lähes mahdotonta. Keskeistä on huomioida paikalliset toimintatavat ja toimia kiireettä kaukonäköisesti. Tuotteen kaikkien osa-alueiden tulisi olla suunniteltu Japanin markkinoihin soveltuviksi jo tarjontavaiheessa. Parantaakseen suomalaisen musiikin vientiä Japaniin on tärkeää tuotteiden menestyksien yhteydessä tuoda esille niiden suomalaisuutta ja näin lisätä kiinnostusta japanilaisten silmissä. Lähtökohtaisesti suomalaisella musiikilla on kuitenkin hyvät mahdollisuudet menestykseen Japanin musiikkimarkkinoilla. Suurimpina ongelmina voidaan pitää vähäistä tietoa japanilaisten mielenkiinnon kohteista, toimintatapojen kulttuurisia eroja ja suomalaisten vientiin panostettavien varojen vähyyttä.