1. Aquatic Ecology374 First Term of year 1432- 1433 Dr.Promy -Nuha AL- Abdulhadi lab 1

3. Topics to be covered: Study of the following: A-Plankton: 1-Phytoplankton 2-Zooplaknton B-Benthos C-Macrophytes Chemical Properties of Water: 1-Free carbondioxide 2-Alkalinity 3-Dissolved oxygen(Modified Winklers method)

4. Introduction What is Aquatic Ecology? Aquatic ecology is a branch of the science of ecology which is concerned with the study of aquatic ecosystems. This field can be broken into two divisions:1- freshwater ecology and 2-marine ecology.ecology ecosystemsmarine ecology

5. Aquatic environment can be divided into: A. Marine ecosystem : are among the largest of Earth's aquatic ecosystems Marine waters cover two-thirds of the surface of the Earth involves: E.g.Shorelines, Coral Reefs, Open Ocean B.Freshwater ecosystem :Fresh water is generally characterized by having low concentrations of dissolved salts Ponds, Lakes, Rivers,Streams.aquatic ecosystems concentrationssalts

6. What is the Organisms are life in Aquatic environment? 3-Benthos 1- Plankton: a- Phytoplankt on b- Zooplaknt on 2- Macrophyt es

7. What is the Plankton? Microscopic materials, minute organisms and detritus in water which wander at the wind, currents and tides

8. The types of Plankton: a-Phytoplankton b- Zooplaknton are chlorophyll bearing suspended microscopic organisms consisting of algae with representatives from all major taxonomic phyla are microscopic free swimming animal components of aquatic system.

9. a-Phytoplankton

10. b-Zooplaknton

11. Zooplak nton

13. 2-Macrophytes: the aquatic macroscopic plants confine themselves to the shallow zone of water

14. Macrophytes

15. the term benthos denotes the whole organisms dwelling at the bottom Benthos

18. NUHA