Lecture Quiz 1 : A water sample reveals that the following chemical contaminates were found in it (Phosphates, Nitrates, and Sulfides). Based on this you can conclude that the water body is being contaminated by what type of source ? 2: A water sample reveals that the following chemical contaminates where found in it (Copper and ph value 4.5). Based on this you can conclude that the water body is being contaminated by what type of source ?

Lecture Quiz 1. A water sample reveals that the following chemical contaminates where found in it (Phosphates, Nitrates, and Sulfides). Source - SEWAGE 2. A water sample reveals that the following chemical contaminates where found in it (Copper and ph value 4.5). Source - INDUSTRIAL/HAZARD WASTE

FACT - Biological contamination of surface water is more common than chemical contamination. FACT - Biological contaminates cause more illnesses than a chemical contaminate.

Protozoa: Single cell organisms. Types 1. Plantlike (Autotrophs) 2. Animal (Heterotrophs)

Plantlike Protozoa (Autotrophic). T hey can produce their own food like a land plant because they have the chemical, chlorophyll that can convert sunlight, water, and carbon dioxide into glucose sugar.

Euglena

Volvox: A fresh water algae that form into a spherical colony.

Algae  Algae bloom = rapid growth of algae in a surface water body like an ocean, lake, or pond due to overabundance of food (nutrients).

Alga Bloom (The Series of Effects)  A thick layer of algae form near the surface blocking sunlight from reaching plants below. This will cause these plants to die and sink to the bottom of the water source.  Decomposers (aerobatic bacteria) breakdown the dead organism and begin to overpopulate using up the dissolved oxygen (DO).

Alga Bloom (The Series of Effects) Fish, crustaceans, and shellfish suffer due to oxygen deprivation and eventually will die from suffocation if they remain in the area of the alga bloom..

Alga bloom on the Colorado River

Dead fish from an ocean alga bloom (Red Tide).

Animal Protozoa (Heterotroph): 1. Amoeba: *A shapeless one-celled mass. *Most amoeba are not harmful to humans except the Dysentery Amoeba. * This amoeba carries the disease dysentery which causes diarrhea and vomiting. The disease is transmitted through feces material that was in the water or food.

Amoeba

2. Paramecium A single cell protozoa with cilia (hair- like) which they use for locomotion. Plasm odium(D) P aramecium causes the disease malaria and is transmitted from the bite of a mosquito.

Paramecium

Bacteria versus Virus

Bacteria  E. Coli: A bacteria found in the intestines of animals and humans.  The presence of E Coli in water is a strong indication of recent sewage or animal waste contamination.

Viruses

The Cycle of a Virus

How the West Nile Virus is transferred

Viruses West Nile Virus - The virus is carried by a species of mosquitoes. -Affects people with weak immune systems Infants Elderly People suffering from illness