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Contribución al estudio de biología reproductiva de un especie de bactris (palmae) en el bosque de Galería (depto. Beni, Bolivia)
Moraes, Mónica,Sarmiento, Jaime
Bulletin de l'Institut Francais d'études Andines , 1992,
Abstract: CONTRIBUTION A L ETUDE DE BIOLOGIE REPRODUCTIVE D UNE ESPECE DE BACTRIS (PALMAE) DE FORET DE GALERIE (DPT. BENI, BOLIVIE). Cette étude présente les résultats d observations préliminaires sur la biologie de reproduction de Bactris bidentula Spruce des forêts-galerie situées dans les savanes des plaines de Moxos (Espíritu, département du Beni, Bolivie). Les observations réalisées ont permis d obtenir des données sur les caractères végétatifs, la phénologie, l anthèse et les agents pollinisateurs possibles. Se presentan los resultados obtenidos de observaciones preliminares sobre la biología reproductiva de Bactris bidentula Spruce del bosque de galería en las sabanas de los llanos de Moxos (Espíritu, Depto. Beni, Bolivia). Las observaciones realizadas permitieron registrar datos vegetativos, fenológicos, antesis y posibles polinizadores. CONTRIBUTION TO REPRODUCTIVE BIOLOGY OF A BACTRIS SPECIES (PALMAE) IN A GALLERY FOREST (DEPART. OF BENI, BOLIVIA). Here we present results of preliminary observations on the reproductive biology of Bactris bidentula Spruce of gallery forest of the savanna of Llanos de Moxos (Espíritu, Dept. Beni, Bolivia). The observations registered information about vegetative features, phenology, anthesis, and possible pollinators.
Leishmaniasis in Bolivia: II. The involvement of Psychodopygus yucumensis and Psychodopygus llanosmartinsi in the selvatic transmission cycle of Leishmania braziliensis braziliensis in a lowland subandean region
Le Pont, F.;Desjeux, Philippe;
Memórias do Instituto Oswaldo Cruz , 1986, DOI: 10.1590/S0074-02761986000300007
Abstract: an epidemiological survey of the vectors of cutaneous leishmaniasis ("espúndia" type) was caried out in the alto beni region of bolivia, an area of andean foothills at the eastern limit of the amazonian lowlands. the climate is typical wet tropical (15os latitude). anthropophilic phlebotomine sandfly species were sampled at 20 sites, all forested. the importance of species from the psychodopygus group, already suspected as a vector in the transmission of leishmania from the braziliensis complex, was confirmed by: 1) the aggressiveness and diversity of the species encountered (83% of catches, nine species), 2) the discovery of a new anthropophilic species, p. yucumensis and 3) the isolation of a strain of leishmania braziliensis braziliensis indistinguishable from human strains from the same area, from two species, p. llanosmartinsi and p. yucumensis.
The growing season greenhouse gas balance of a continental tundra site in the Indigirka lowlands, NE Siberia
Biogeosciences (BG) & Discussions (BGD) , 2007,
Abstract: Carbon dioxide and methane fluxes were measured at a tundra site near Chokurdakh, in the lowlands of the Indigirka river in north-east Siberia. This site is one of the few stations on Russian tundra and it is different from most other tundra flux stations in its continentality. A suite of methods was applied to determine the fluxes of NEE, GPP, Reco and methane, including eddy covariance, chambers and leaf cuvettes. Net carbon dioxide fluxes were high compared with other tundra sites, with NEE= 92 g C m 2 yr 1, which is composed of an Reco=+141 g C m 2 yr 1 and GPP= 232 g C m 2 yr 1. This large carbon dioxide sink may be explained by the continental climate, that is reflected in low winter soil temperatures ( 14°C), reducing the respiration rates, and short, relatively warm summers, stimulating high photosynthesis rates. Interannual variability in GPP was dominated by the frequency of light limitation (Rg<200 W m 2), whereas Reco depends most directly on soil temperature and time in the growing season, which serves as a proxy of the combined effects of active layer depth, leaf area index, soil moisture and substrate availability. The methane flux, in units of global warming potential, was +28 g C-CO2e m 2 yr 1, so that the greenhouse gas balance was 64 g C-CO2e m 2 yr 1. Methane fluxes depended only slightly on soil temperature and were highly sensitive to hydrological conditions and vegetation composition.
The seasonal cycle of the greenhouse gas balance of a continental tundra site in the Indigirka lowlands, NE Siberia  [PDF]
M. K. van der Molen,J. C. van Huissteden,F. J. Parmentier,A. M. R. Petrescu
Biogeosciences Discussions , 2007,
Abstract: Carbon dioxide and methane fluxes were measured at a tundra site near Chokurdakh, in the lowlands of the Indigirka river in north-east Siberia. This site is one of the few stations on Russian tundra and it is different from most other tundra flux stations in its continentality. A suite of methods was applied to determine the fluxes of NEE, GPP, Reco and methane, including eddy covariance, chambers and leaf cuvettes. Net carbon dioxide fluxes were unusually high, compared with other tundra sites, with NEE=–92 g C m 2 yr 1, which is composed of an Reco=+141 g C m 2 yr 1 and GPP=–232 g C m 2 yr 1. This large carbon dioxide sink may be explained by the continental climate, that is reflected in low winter soil temperatures (–14°C), reducing the respiration rates, and short, relatively warm summers, stimulating high photosynthesis rates. Interannual variability in GPP was dominated by the frequency of light limitation (Rg <200 W m 2), whereas Reco depends most directly on soil temperature and time in the growing season, which serves as a proxy of the combined effects of active layer depth, leaf area index, soil moisture and substrate availability. The methane flux, in units of global warming potential, was +28 g C-CO2e m 2 yr 1, so that the greenhouse gas balance was –64 g C-CO2e m 2 yr 1. Methane fluxes depended only slightly on soil temperature and were highly sensitive to hydrological conditions and vegetation composition.
Fluvial systems and their sedimentary models
Dragomir Skabeme
Geologija , 1995,
Abstract: The Slovenian géomorphologie and sedimentologie terminology for fluvial depositional environments is not established yet. Therefore a classification and the proposal for Slovenian names of fluvial sedimentary and erosional forms and influences controlling them are discussed. Attention is given to the problems of recognition of sedimentary environments in sedimentary rocks, and to fluvial sedimentary models.
Attorno a beni comuni e communali  [cached]
Riccardo Rao,Alessandro Dani
Reti Medievali Rivista , 2009,
Abstract: Due contributi attorno al tema dei beni comuni e communali. Two studies about commons and communal properties.
Rhodnius robustus in Bolivia identified by its wings
Matias, A;Riva, JX de la;Torrez, M;Dujardin, JP;
Memórias do Instituto Oswaldo Cruz , 2001, DOI: 10.1590/S0074-02762001000700010
Abstract: wings of a rhodnius specimen from alto beni (bolivia) was examined for identification and compared with r. stali, r. robustus, (certified bolivian species), r. pictipes and r. prolixus (suspected bolivian species). a projection of the unidentified wings as supplementary data into a discriminant analysis of shape revealed clear cut differences with r. stali and r. pictipes, less differences with r. prolixus, and none with r. robustus. combining global size and shape of the wings, the unknown specimen was identified as r. robustus. thus, this study confirmed the presence of r. robustus in bolivia. it also highlighted the possibility of morphometrics to taxonomically interpret one individual, or even one piece of an individual, when related species data are available for comparison.
Rhodnius robustus in Bolivia identified by its wings  [cached]
Matias A,Riva JX de la,Torrez M,Dujardin JP
Memórias do Instituto Oswaldo Cruz , 2001,
Abstract: Wings of a Rhodnius specimen from Alto Beni (Bolivia) was examined for identification and compared with R. stali, R. robustus, (certified Bolivian species), R. pictipes and R. prolixus (suspected Bolivian species). A projection of the unidentified wings as supplementary data into a discriminant analysis of shape revealed clear cut differences with R. stali and R. pictipes, less differences with R. prolixus, and none with R. robustus. Combining global size and shape of the wings, the unknown specimen was identified as R. robustus. Thus, this study confirmed the presence of R. robustus in Bolivia. It also highlighted the possibility of morphometrics to taxonomically interpret one individual, or even one piece of an individual, when related species data are available for comparison.
LAS RAZAS DE MANí DE BOLIVIA The peanut landraces from Bolivia
Antonio Krapovickas,Ricardo O. Vanni,José R. Pietrarelli,David E. Williams
Bonplandia , 2010,
Abstract: Bolivia se destaca como probable lugar de origen del maní cultivado y un centro de variación único en el mundo, lo que se ala a Bolivia como una importante fuente de materiales para el mejoramiento de este cultivo de importancia mundial. En este estudio para maní se diferencian para Bolivia 62 razas de maní cultivado de las cuales, 42 pertenecen a Arachis hypogaea L subsp. hypogaea var. hypogaea, 17 a A. hypogaea susbp. fastigiata Waldron var. fastigiata, 1 a A. hypogaea susbp. fastigiata var. vulgaris y 2 a A. hypogaea subsp. fastigiata var. peruviana Krapov. & W. C. Gregory. Bolivia constituye un centro de variación independiente pues sus razas son exclusivas de su territorio, salvo muy pocas excepciones. Bolivia como unidad, se caracteriza por las razas "Crema", "Colorado San Simón", "Bayo americano", "Overo" y "Overo carenado", que se cultivan en todo el país. Se pueden delimitar algunas regiones de mayor diversidad: la región de los Yungas de La Paz, donde se coleccionaron 11 razas de las cuales 3 son exclusivas y la región monta osa de Santa Cruz y Cochabamba, con 18 razas de las cuales 6 son exclusivas. Estas dos regiones pertenecen a la cuenca del Amazonas. Una tercera región se encuentra en el Departamento de Tarija, perteneciente a la cuenca del Plata, donde se coleccionaron 14 razas, de las cuales 2 son exclusivas. Todas estas razas pertenecen a la var. hypogaea. La subsp. fastigiata, presenta un centro de variación muy notable en la cuenca del río Beni, donde en un área muy peque a se coleccionaron 10 razas, de las cuales 9 son exclusivas. Se destaca Bolivia como un centro de variación único en el mundo y la gran variabilidad del maní se ala a Bolivia como una importante fuente de posibilidades para el mejoramiento de este cultivo Bolivia is reagarded as the probable place of origin of the domesticated peanut, and an important world center of unique peanut diversity. As the first published study of its kind or peanut, this paper identifies and describes the infraspecific diversity of the crop in its country of origin and center of diverstity. 62 distinct landraces of Bolivian peanut were identified and systematically described. 42 landraces belong to Arachis hypogaea L. ssp. hypogaea var. hypogaea; 17 to A. hypogaea ssp. fastigiata var. fastigiata; one to A. hypogaea ssp. fastigiata var.vulgaris; and two to A. hypogaea ssp. fastigiata var. peruviana. With very few exceptions, the landraces encountered in Bolivia are almost entirely endemic to that country. The most typical peanuts from Bolivia pertain to the landraces “Crema”, “Colorado San S
First records of five species of the genus Eleutherodactylus Duméril and Bibron, 1841 (Anura, Leptodactylidae) for Bolivia  [cached]
Padial, J. M.,Gonzáles, L.,Reichle, S.,Aguayo, R.
Graellsia , 2004,
Abstract: Five species of the genus Eleutherodactylus (Anura, Leptodactylidae) are reported from Bolivia for the first time: E. altamazonicus from Departments Pando and La Paz; E. carvalhoi from Cochabamba; and E. ockendeni, E. skydmainos and E. zimmermanae from Pando. New departmental records are provided for other species: E. cruralis for Department Pando, E. danae for Beni and La Paz, E. platydactylus for Beni, E. toftae for Pando and La Paz and E. ventrimarmoratus for La Paz. Currently, 25 species of Eleutherodactylus are known in Bolivia. The taxonomic status of some species remains uncertain, new species are being described and others are still to be discovered. Therefore, the actual number of Bolivian Eleutherodactylus species is still unknown. En este trabajo se publican los primeros registros de cinco especies del género Eleutherodactylus (Anura, Leptodactylidae) para Bolivia: E. altamazonicus en los Departamentos de Pando y La Paz; E. carvalhoi en Cochabamba; y E. ockendeni, E. skydmainos y E. zimmermanae en Pando. Además, se aportan las primeras citas de E. cruralis para el Departamento de Pando, de E. danae para Beni y La Paz, de E. platydactylus para Beni, de E. toftae para Pando y La Paz y de E. ventrimarmoratus para La Paz. La diversidad conocida de Eleutherodactylus en Bolivia es de 25 especies, aunque los problemas taxonómicos sin resolver, las especies en descripción y el alto número de especies aún no citadas que se considera probable encontrar, hacen que aún desconozcamos la verdadera diversidad de este género en Bolivia.
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