Food chains and food webs illustrate how different specie get energy. Plants are the basis for energy that flows through a food web. Freshwater ecosystems have cattails, duck weed, moss and other plants that provide good energy source for the primary plant eaters. Find out how the energy flows up through the food chain.

Cattails (Typha species)
Cattails (Typha species) By Steve Brill Wildmanstevebrill.com Scroll down the page and click on Cattails for photos and information on the plant.
http://www.wildmanstevebrill.com/plants.html
Cattails - Bay Field Guide
Cattails - Bay Field Guide Chesapeake Bay Program Cattails are a native perennial plant with distinctive brown, sausage-shaped “tails.”
http://www.chesapeakebay.net/fieldguide/critter/ca...
Cattails on Flickr - Photo Sharing
Cattails on Flickr - Photo Sharing, by PaperBouquet, Visit the website for photo.
http://www.flickr.com/photos/paperbouquet/35960634...
Charms of Duckweed, The
Charms of Duckweed, The by John W. Cross, Ph.D. Alexandria, VA Missouri Botanical Garden The family of duckweeds (botanically, the Lemnaceae) are the smallest flowering plants. These plants
http://www.mobot.org/jwcross/duckweed/duckweed.htm
Common Duckweed
Common Duckweed Texas AgriLife Extension Service Department of Wildlife & Fisheries Texas A&M University Lemna minor Common duckweed is a very small light green free-floating, seed bearing plan
http://aquaplant.tamu.edu/plant-identification/alp...
Typha - Wikipedia
Typha, Wikipedia.org, Visit the website for article; click on photo for a larger version.
http://en.wikipedia.org/wiki/Typha
What are Cattails?
What are Cattails? Written by Lou Paun Wisegeek.com Cattails are wetland plants in the genus Typha. There are eleven species in this genus, mostly native to the northern hemisphere. Typha lat
http://www.wisegeek.com/what-are-cattails.htm
What Are the Different Types of Phytoplankton?
What Are the Different Types of Phytoplankton? Updated by Rachelle Dragani, Sciencing.com "Phytoplankton are tiny in size but giant in impact. The diverse group of organisms live in a variety o
https://sciencing.com/different-types-phytoplankto...
What exactly is green algae?
What exactly is green algae? YouAskAndy.com Certain pollution reports give the idea that the green algae is the worst pest on this planet. This bad reputation is ridiculous. The truth is that al
http://youaskandy.com/questions-answers/30-article...