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Trypanosoma cruzi persistence at oral inflammatory foci in chronic chagasic patients
(2011-12-13)
The persistence of Trypanosoma cruzi in seropositive individuals, previously diagnosed as chronic chagasic
patients (CCP), was detected for the first time in biopsies taken from gingival inflammatory foci processed
by ...
Supervivencia e infectividad de formas metacíclicas de Trypanosoma cruzi en alimentos experimentalmente contaminados
(2011-12-13)
Se registra el tiempo de supervivencia de formas metacíclicas de Trypanosoma cruzi,
obtenidas del tracto digestivo de Rhodnius prolixus, sobre alimentos contaminados experimentalmente. Observaciones entre 1h y 18h ...
Vegetation and grazing patterns in Andean environments: A comparison of pastoral systems in punas and páramos
(Spehn, E., Liberman, M., Körner, C. (Eds)., 2006-11-11)
O caso das savanas tropicais da América do Sul: quando a sustentabilidade econômica e ecológica não é suficiente
(2006)
O caso das savanas tropicais da América do Sul ilustra as complexas interrelações entre as características ecológicas dos ecossistemas terrestres naturais
e os seus usos. As savanas tropicais estão determinadas por um ...
Spatial heterogeneity, land use and conservation in the cerrado region of Brazil
(2006)
Aim This paper presents a spatial classification of the environmental and ecological diversity of the cerrado region of Brazil, as well as an appraisal of
the levels of conversion to agriculture and of the extent of land ...
Grazing impact on vegetation structure and plant species richness in an old-field succession of the venezuelan Páramos
(Spehn, E., Liberman, M., Körner, C. (Eds)., 2006)
Dinámica sucesional de la vegetación en un sistema agrícola con descanso largo en el Altiplano central boliviano
(2006)
Se estudió la dinámica sucesional de la vegetación en parcelas en descanso agrícola en el Altiplano central boliviano, donde se practica una agricultura
con descansos largos en sectores manejados comunalmente. El objetivo ...
Factors controlling decomposition of soil organic matter in fallow systems of the high tropical Andes: A field simulation approach using 14C- and 15N- labelled plant material
(2006)
N-rich (C:N ¼ 27) and N-poor (C:N ¼ 130) wheat straw, labelled with 14C and 15N, was incubated for 2 yr in two major ecosystems of the upper elevation belt of cultivation in the high Andes: the moist Paramo (precipitation ...
Nitrogen and phosphorus as limiting factors for growth and primary production in a flooded savanna in the Venezuelan Llanos
(2006)
The effects of N, P, NP and NPKS application on plant growth, above-ground primary production and N and P accumulation in the above-ground
biomass of a flooded savanna were assessed over two growth cycles. Application ...