Mean Secchi disk
(n = 179) was 3.2 [+ or -] 2.2 m and ranged from 0.3 m in January 2009 to 8.1 m in April 2015 (Table 2).
A lake can vary in water transparency, so it is important to take numerous Secchi disk
readings throughout the day.
Along with numbers of black sea bass at each site, abiotic factors were recorded, including water temperature (degrees Celsius), dissolved oxygen (milligrams per liter), salinity, Secchi disk
depth (centimeters), and water depth (meters).
(12) In addition to the customary locational and structural variables, they use Secchi disk
readings as an objective measure of water clarity.
Zooplankton samples were collected every month at five selected stations in the lake with three replicates, and the water temperature, dissolved oxygen, pH, Secchi disk
depth, electrical conductivity, and depth were measured at the stations.
In present work, the infestation rate decreases with increase in turbidity, and water clarity measured with Secchi disk
showed positive relation to isopod infestation.
I lowered my black-and-white secchi disk
into Florida Bay.
According to the OECD (1982) system, the lake was considered hypereutrophic when including the Secchi disk
values (Table 2).
The application of molasses to the culture water significantly reduced the Secchi disk
depth (p < 0.05), valid for tanks with and without substrate for periphyton.
(iv) light extinction depth, measured by Secchi disk