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Ecosystems 5.L.2 Understand the interdependence of plants and animals with their ecosystems. 5.L.2.1 Compare the characteristics of several common ecosystems, including estuaries and salt marshes, oceans, lakes and ponds, forests and grasslands. Essential Questions • What are ecosystems? • What is the relationship between living things in an ecosystem? • How does human interaction affect ecosystems? Ecosystem • Everything that exists in a particular environment. • An ecosystem includes living things, such as plants and animals, and things that are not living, such as rocks, soil, sunlight, and water. Two Different Kinds of Ecosystems 1. Terrestrial – land-based; include forests and grasslands. – Forests have many trees (with needles or with leaves), shrubs, grasses and ferns, and a variety of animals. They usually get more rain than grasslands. Diverse types of animals can be found in forests, depending on their type – Temperatures in forests will vary based on where they are located in respect to the equator. Two Different Kinds of Ecosystems Terrestrial LAND Aquatic WATER Deciduous Forests • • • • • • Black bear Deer Red fox Vole Rabbit Cardinal Rainforests • • • • • Panther Monkeys Capybara Snakes Spiders Two Different Kinds of Ecosystems 2. Aquatic – water-based ecosystems may be freshwater (lakes and ponds) or saltwater (oceans, estuaries and saltwater marshes). Lakes and ponds are bodies of freshwater surrounded by land. Ponds – more shallow than lakes; temperature is usually the same from top to bottom. Plants and algae usually grow along the edges where the water is shallow. Various fish, amphibians, ducks, turtles, or beavers… • Oceans are large bodies of saltwater divided by continents. Needs of Organisms Today’s Vocab! • • • • • Community Competition Ecosystem Niche – the ROLE of an organism in an ecosystem Overpopulation – TOO MANY of at least one kind of living thing in an area compared to the available resources. • Population Ecosystem All the living and nonliving things in an environment and their interactions with each other. Population All of the members of one species in an area Community All the living things in an ecosystem. Today’s Vocab! • • • • • Community Competition Ecosystem Niche – the ROLE of an organism in an ecosystem Overpopulation – TOO MANY of at least one kind of living thing in an area compared to the available resources. • Population