Name: ____________________________________________________ Per.: _____ Date: ___________________ Assignment #: ______ Env Sci Ch. 7 Notes: Aquatic Biomes A. Freshwater a. Freshwater = Waters with ________________________________________________________________________ • Includes ponds, lakes, streams, rivers, and wetlands (lands that are periodically under water) b. Lakes and ponds are divided into zones: _____________________________ zone _____________________________ zone _____________________________ zone • Littoral Zone = NutrientIrich layer _________________________________________________________________ o Contains abundant and diverse aquatic life • Limnetic Zone = __________________________________________ near the surface o Receives _____________________________________________________ and dominated by ______________________________________________ (small aquatic organisms) • Benthic Zone = _______________________________________________________________________________________ o Characterized by decomposers, insect larvae, and clams c. Wetlands = areas of ____________________________________________ that support aquatic plants • Includes __________________________________________________________________________________________ • Adaptations i. Hydrophytes = Organisms, such as cattails, are ___________________________________________ _________________________________________________________________________________________________ ii. Many organisms are _________________________________________________________________________ • Threats i. __________________________________________________________________ threatens the existence of many wetlands