Aquatic Ecology374First Term of year

1432-1433Dr.Promy -Nuha AL-

Abdulhadilab 1

Topics to be covered:Study of the following: A-Plankton:1-Phytoplankton2-ZooplakntonB-Benthos C-MacrophytesChemical Properties of Water:1-Free carbondioxide2-Alkalinity3-Dissolved oxygen(Modified Winklers method)

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.

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 OceanB.Freshwater ecosystem :Fresh water is generally characterized by having low concentrations of dissolved salts Ponds, Lakes, Rivers ,Streams.

What is the Organisms are life in Aquatic environment?

3-Benthos

1-Plankton:

a-Phytoplankton

b-Zooplaknton

2-Macrophytes

What is the Plankton?

Microscopic materials, minute organisms and detritus in water which

wander at the wind, currents and tides

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.

a-Phytoplankton

b-Zooplaknton

Zooplaknton

2-Macrophytes: the aquatic macroscopic

plants confine themselves to the shallow zone of

water

Macrophytes

the term benthos denotes the whole organisms dwelling at the

bottom

Benthos

Benthos

NUHA