PPT-6 Biomes and Aquatic Ecosystems

CHAPTER Too Much of a Good Thing Elephant populations in southern Africa declined sharply due to hunting but have made overwhelming comebacks within nature reserves and parks Some worry that elephant overpopulation is causing a decline in local biodiversity and damage to farms and infrastructure. Freshwater Biomes. Freshwater is less than 3% of the Hydrosphere. . 90% of the freshwater is locked beneath the Earth’s surface. . Water is cycled through evaporation and transpiration from the atmosphere to the land and back again. . Chapter 10. Objectives. Describe the factors that characterize the various types of aquatic biomes.. 10.1 Aquatic Biomes. Aquatic Biomes. What type of biomes have we learned about so far?. Rainforest, savannah, desert, . Designed by Christopher Becker,. Joeie. Puckett, Michael . Ruthenberg. ,. and . Satura. Thomas. A . Webquest. for 4. th. Grade. Introduction. Biomes are defined as "the world's major communities, classified according to the predominant vegetation and characterized by adaptations of organisms to that particular environment" (. . Table of Contents. Section 3: . Aquatic Ecosystems. Section 1: . How Ecosystems Change. Section 2: . Biomes. Chapter: Ecosystems. . Table of Contents. Section 1: . How Ecosystems Change. Mosses from my back yard. The Aquatic Biome. 3 Basic Areas:. Freshwater. (rivers, lakes). Brackish. Water (estuaries, wetlands). Marine. (oceans, coral reefs). How do ecologist classify?. Salinity. Depth . Whether the water is . Abiotic Elements That Affect Our Water. Water Chemistry. Healthy aquatic ecosystems depend upon many factors. One important factor is the chemical balance present in the ecosystem.. Aquatic ecosystems are susceptible to many chemical changes. Usually if the chemistry of a “healthy” ecosystem changes, signs of this change will include sensitive organisms quickly declining in number or disappearing. These types of organisms are called . 4.2 pgs. 94 - 100. Biomes. A large geographical region with a specific range of temperatures and precipitation, and the organisms that are adapted to those conditions of temperature and precipitation. Overview: Discovering Ecology. Ecology. is the scientific study of the interactions between organisms and the environment. These interactions determine distribution of organisms and their abundance. Explain how biomes are characterized. Describe how net primary production varies among biomes. Explain how organisms are adapted to the conditions of their biomes. Describe the criteria ecologist use to classify aquatic systems. Aquatic ecosystems are primarily determined by the ecosystem’s . salinity. . Salinity refers to the dissolved salt content of the water.. Aquatic ecosystems are divided into freshwater and marine ecosystems.. SUMMER INSTITUTE. June 23-25, 2015. Presented by. UNC INSTITUTE FOR THE ENVIRONMENT. GOOSE CREEK STATE PARK. A TIME FOR SCIENCE NATURE AND SCIENCE LEARNING CENTER. Funded by . THE EDDIE AND JO ALLISON SMITH FAMILY FOUNDATION. A BIG group of LIVING things . Different kinds of species. Large geographical area/ REGION. How are biomes commonly identified?. Biomes are commonly identified by the Biome’s dominant . plant species. Section 3: . Aquatic Ecosystems. K. What I Know. W. What I Want to Find Out. L. What I Learned. Essential Questions. What are the major abiotic factors that determine the aquatic ecosystems?. What are transitional aquatic ecosystems and why are they important?. Biomagnification. is the process by which matter becomes concentrated in living things in a food chain.. Moving up the Food Chain . DDT provides one example of the effects of . biomagnification. in an ecosystem. DDT is a chemical that was widely used to kill plant–eating insects. Some chemicals break down over time, but DDT does not. DDT collected in water and soil, was absorbed by living things, and moved up the food chain. The diagram shows how DDT became magnified in a wetland ecosystem. It entered through tiny organisms called zooplankton, which absorbed DDT from the water..