Su modificacion tiene funcion teleologica, ya que lo femenino se hace conducente con el fin de la existencia (Secchi
testudinum presented significant intra-annual differences and among years; nevertheless, this was not explained by seawater parameters (salinity, temperature, Secchi
That is why knowing the optimum depth of the perfect water is so important, thus the Secchi
disk readings are used as an objective measure of water clarity and applied to a standard two-stage hedonic model.
Light penetration was measured with the help of Secchi
In conclusion, although killer whales seem to have primarily an oceanic distribution in southern Brazil and feed mainly on large fishes near the continental slope (Secchi
and Vaske Jr., 1998; Dalla Rosa and Secchi
, 2007; Passadore et al., 2015), the species, or at least some of the existent stocks, can also eventually search and prey upon coastal whales and dolphins in the region.
Outfall characteristics Outfall Flow Fecal coliform rate concentration ((m.sup.3)/s) (MPN/100ml) Barra da 5 4,2.107 Tijuca Ipanema 7,5 4,2.107 Icarai 1 7.107 Maximum solar radiation Turbidity at water surface (W/(m.sup.2)) Outfall Summer Summer Winter Secchi
clear overcast clear depth sky sky (metres) Barra da 991 345 593 8 Tijuca Ipanema 991 345 593 8 Icarai 991 345 593 4 Maximum solar radiation within the sewage plume (W/(m.sup.2)) Outfall Summer Summer Winter clear overcast clear sky sky Barra da 378 132 227 Tijuca Ipanema 378 132 227 Icarai 207 72 124
Water transparency was determined by using a 20-cm in diameter Secchi
's disk and represented as Secchi
's depth (ZSd).
Evaluation of water transparency and depth: Evaluations of water transparency and depth for the pond were made from February 2008 to December 2009, using the Secchi
disc, while pond level was taken from a fluviometric gauge 12 km away.
If there are any doubts at all about the water's clarity, a Secchi
disc is a simple tool used to qualitatively measure water clarity (or alternately it's "turbidity").