Biomes freshwater

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By: iambob32 (122 month(s) ago)

Great Job. I woudl like to use it in my trout in the classroom training. It woudvbe part of the conservation and aquatic isect module..Hope it is OK with you; it is a huge benefit for our class My email is Thaks, Bob

By: ElCanadii (123 month(s) ago)

Hello my friend, A really great presentation you got there. I am working on the same topic as you are for my mid-term assignment here at CGEP and I would like to download the presentation on my computer because I haven't been able to see everything since my laptop is really slow. I thank you for the time and I really hope you allow me to download it. I will not take credit I will just read the points you make. Canadii Khalil, my email is, thank you again.

By: rcus62 (127 month(s) ago)

Great presentation, I would like todown load this and use it for my High school Environmental Science class if that is O.K with you. I will not take credit for it but would like to create a power note workshhet for them to follow along. Rodney Cross My email is

By: jrlindsey304 (128 month(s) ago)

me again - my email address is thanks

By: jrlindsey304 (128 month(s) ago)

May I have a copy of this powerpoint for my aquatic science class. I teach in a Title 1 school and resources are scant. Thank you Jim Lindsey, Ed.D.

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Presentation Transcript

World Biomes: 

World Biomes Fresh water


Wetlands Bogs, swamps, and marshes are wetlands. All wetlands have waterlogged soil. Bogs and swamps are flooded, but a marsh is wet only part of the year. Some wetlands are flooded with salty ocean water; others are covered with fresh water from rivers and lakes.


marsh swamp bog

Wetland distribution: 

Wetland distribution Wetland biomes are found all over the world. They are often near lakes and rivers, but they also develop in sunken areas of grassy plains.

Wetland climate: 

Wetland climate Unlike some other biomes, wetlands do not have a characteristic climate. They exist in polar, temperate, and tropical zones, although usually not in deserts. However, they are very sensitive to changes in climate, such as a decrease in precipitation (rain, sleet, or snow). The amount of precipitation and changes in temperature affect the growth rate of wetland plants. Some wetlands are seasonal, which means that they are dry for one or more seasons of the year.

Wetland soil: 

Wetland soil Wetland soils are known for their wetness but they should also be known for their high organic content. Most wetland soils have a higher amount of organic material than terrestrial soils.

Wetland plants: 

Wetland plants More than 5,000 species of plants live in or near wetlands. Wetlands have high biological productivity (the rate at which life forms grow in a certain period of time). The kinds of plants that may be found in a wetland are determined by several factors, especially the type of soil and the quantity of water. Some plants grow only in water or extremely wet soil. Other plants need moist but not saturated soil. When a wetland dries up, the area fills with plants adapted to life in dry habitats and can survive where other wetland plants would wilt.


Pond Lily Cattail


Marsh Purslane Cypress swamp


Animals Wetlands have been called "biological supermarkets." Besides animals that live there permanently, many nonwetland animals visit for food and water. Wetland conditions make it necessary for the animals that live there permanently to adapt in special ways.


Lungfish Dragonfly


Bittern Boat-billed Heron Snipe


Leopard Frog Swamp Tortoise


Rivers These are bodies of flowing water moving in one direction. Streams and rivers can be found everywhere—they get their starts at headwaters, which may be springs, snowmelt or even lakes, and then travel all the way to their mouths, usually another water channel or the ocean. The characteristics of a river or stream change during the journey from the source to the mouth.

Distribution of Rivers: 

Distribution of Rivers

Conditions in Rivers: 

Conditions in Rivers The temperature is cooler at the source than it is at the mouth. The water is also clearer, has higher oxygen levels. Towards the middle part of the stream/river, the width increases, as does species diversity—numerous aquatic green plants and algae can be found. Toward the mouth of the river/stream, the water becomes murky from all the sediments that it has picked up upstream, decreasing the amount of light that can penetrate through the water. Since there is less light, there is less diversity of flora, and because of the lower oxygen levels, fish that require less oxygen.

River plants: 

River plants In fast streams and rivers many plants have special structures that keep them from being carried away by the water. Some aquatic plants have strong roots that keep them anchored securely, while others have stems that bend easily with the movement of the water. Certain mosses are able to cling to rocks.


River plants Algae from Mississippi

River animals: 

River animals In fast moving waters animals that have to hold onto rocks and the bottom may have suction-cup like structures on their bodies.


Anaconda and Cayman Black River Turtle


Red-Bellied Piranha Gavial


Lakes These regions range in size from just a few square meters to thousands of square kilometres. Scattered throughout the Earth. Many ponds are seasonal, lasting just a couple of months while lakes may exist for hundreds of years or more. Ponds and lakes may have limited species diversity since they are often isolated from one another and from other water sources like rivers and oceans.

Distribution of Lakes: 

Distribution of Lakes

Conditions in Lakes: 

Conditions in Lakes The zone, which is closet to the shore is host to a wide variety of species due to its warm, shallow environment.  Various species of invertebrates, crustaceans, plants and amphibians thrive in this environment, and in turn provide food for predators such as birds, reptiles and other creatures inhabiting the shoreline. The open water near the surface of a lake or pond, is home to a variety of phytoplankton, and zooplankton, which play an important role in the food chain. Several species of freshwater fish such as bass and lake trout can also be found this area, mainly feeding on insects and plankton.   The deeper region of a lake is shrouded in darkness, and serves as a repository for dead plankton, and is inhabited by creatures which feed mostly on decaying organisms. 

Lake plants: 

Lake plants Underwater plants need to stay close to the water's surface so sunlight can reach them. Some freshwater plants, such as water lilies, grow flowers and leaves that float on the water's surface.



Lake animals: 

Lake animals Many types of animals live in ponds because they are not in danger of being swept away by a current. Insects, birds, turtles, frogs, and fish are some of the animals you can find in ponds and lakes. In regions with colder climate some animals have to hibernate during winter.


Common Carp White Pelican


Anodonta Great Pond Snail

People I: 

People I Without freshwater biomes we would not be alive. Freshwater ecosystems are important because they provide us water for drinking; energy and transportation. Dams may provide pollution-free energy, and create lakes for people to enjoy, but they can also damage the environment. Salmon are a species that use rivers to spawn, and are often hurt by dams. Wetlands are also an important type of freshwater ecosystem. They may be soggy and stinky, but they provide critical habitat for tons of plants and animals, help clean our water, control floods, and provide food for humans. By fertilizing the lawn with chemicals and allowing our cars to drip nasty oils and fluids we are polluting freshwater biomes. The rain carries these pollutants into rivers, streams, lakes and ponds.

People II: 

People II


River dam

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