The income of small-scale fisheries of two urban reservoirs in Brazil: Represa Billings (127 km2) located in the metropolitan region of São Paulo, the capital city of the state of São Paulo and Lago Paranoá (38 km2) located in Brasília (DF), the capital city of Brazil were calculated and compared. Both fisheries are mainly based on the alien Nile tilapia Oreochromis niloticus (more than 80% of ...

s of the 10th International Auchenorrhyncha Congress, 6–10 September, Cardiff, Wales. MacMahon JA. 1988. Warm deserts. In: Barbour MG, Billings WD, eds. North American terrestrial vegetation. Cambridge: Cambridge University Press, pp. 231–

other techniques can also be used. Billings et al. (1) describe a quantification system based on absolute pixel count. While this method of quantification would allow for accurate comparison amongst homogenous tissue sources, heterogeneous tissue specimen sizes would undoubtedly affect the total pixel count. The use of pixel density rather allows for comparison independent of tissue size. Pixel...

BillingsMentor is an automated Web-based service for the Billings Method of natural family planning in which the guidance and interpretation previously communicated from teacher to student is provided by programmed algorithms. There are two functions: (1) to instruct the client to generate proper descriptions of her fertility symptoms; and (2) to interpret the symptoms efficiently according to ...

An unusual bloom of Ceratium furcoides is reported for a station of the Taquacetuba compartment of the Billings Reservoir. The appearance of this bloom is attributed to the mixing and turbulence of the water column that removed Ceratium cysts from the surface of the sediment and promoted conditions for the growth of this species in the region of mixing. Cold fronts approaching the Billings Rese...