I lowered my black-and-white secchi disk
into Florida Bay.
1 gasoline-water mud pump arnomis- 1 2 batteries from 150 Ah to 200 - 2 3 Centrifuges - 1 Mobile Laminar 4 - 1 5 of moisture, temperature and pressure (0-100 hPa) probes - 1 of 6 rabble - extractors with accessories - 1 7 Electric range - 1 of 8 Triple filtration system with a vacuum pump - 1 9 Single filtration system with a vacuum pump - 1 10 Secchi disk
- 1 of 11 samples drying unit (with the weighing function) - 1 12 Air conditioning - 1 3 public lots.
depth (Secchi), water surface temperature (Temp), dissolved oxygen (DO) content, and pH were measured in situ, the rest of the chemical analyses were performed at Tartu laboratory of the Estonian Environmental Research Centre.
Water clarity was measured using a Secchi disk
at each location.
It is a proxy the scientific community has long accepted as legitimate, said Paul Falkowski of Rutgers University, who has used Secchi disk
data for his work.
Two reservoir locations were monitored bi-weekly from May through September 2007 for pH, temperature, dissolved oxygen, Secchi disk
transparency, chlorophyll a, and nutrients.
readings from state fishery agencies provide water clarity information, or you can do it yourself by watching the depth at which a large white spinner-bait disappears from view.
In addition, inputs for water temperature (as an influence on development rate), and Secchi disk
transparency as an estimator of phytoplankton (midge larval food) abundance were included in the model.
Water transparency was determined with a Secchi disk
and euphotic depth with a submarine photometer.
Other data collected included: water temperature, depth, air temperature, secchi disk
, dissolved oxygen, fecal coliform, pH, biochemical oxygen demand (BOD), bird survey, invertebrates, vegetation and soil.
Environmental conditions were recorded at the time of each net set, and included temperature, salinity, conductivity, secchi disk
reading, dissolved oxygen, wind speed and direction, and cloud cover.