PPT-Biodiversity, Species Interactions,

and Population Control Chapter 5 Miller and Spoolman 2010 Figure 51 An endangered southern sea otter in Monterey Bay California USA uses a stone to crack the shell of a clam insert It lives in a giant kelp bed near San Clemente Island California background Scientific studies indicate that the otters act as a keystone species in a kelp forest system by helping to control the populations of sea urchins and other kelpeating species. The complexity and rich diversity of life found in forests provides many vital services to human beings Nonetheless humans are destroying forest biodiversity at an alarming rate The conversion of forests to agricultural land overgrazing unsustainabl What is Biodiversity?. All living things in a food web are connected.. If the numbers of one species are affected it affects the numbers of all other species in the food web.. If the numbers of baboons decreased then this would affect every other living things in the food web.. Achievements and challenges . . Dr. Amani . Alassaf. . Environment and natural resources Economist. University of Jordan. amani.alassaf@ju.edu.jo. Reflecting Biodiversity – Holistic approaches and regional adaptation . AP Environmental Science. Mr. Grant. Lesson . 38. Objectives:. Define . the terms . extinction. , . extirpation. and . mass extinction. .. Contrast . background extinction rates and periods of mass extinction.. Environmental Science. January 9, 2012. Ms Cilli. Chapter 10 Activity. Exotic Species. : . animals that are not native to an area. Objectives. Develop an organization that preserves the world’s . biodiversity. Wednesday, February 1. st. , 2017. & Friday February 3. rd. , 2017. WHAT CAN WE DO? Eight Priorities for Protecting Biodiversity. Take immediate action . to . preserve. world’s biological . hot spots.. ?. What diversity is…. What diversity does…. So, there sure are a lot of species… (= biodiversity). WHY PRESERVE BIODIVERSITY?. So, there sure are a lot of species… (= biodiversity). WHY PRESERVE BIODIVERSITY?. What is biodiversity?. Bio = life. Diversity = differences among organisms. Biodiversity. = the variety of living organisms found in an area. Where can you find biodiversity?. Biodiversity varies around the world:. Case Study: Protecting Whales: A Success Story… So Far (1) . Cetaceans: Toothed whales and baleen whales. 8 of 11 major species hunted to commercial extinction by 1975. 1946: International Whaling Commission (IWC). Which do you like better?. A. B. Which do you like better?. A. B. Which do you like better?. A. B. Which do you like better?. A. B. A. B. Which do you like better?. A. B. Which do you like better?. A. BIODIVERSITY Our planet-earth (biosphere) contains more than 20 million species of organisms. But, of which only 1.4 million species have been identified so far. These species differ widely from Match the following to the correct description. One Teacher. species. population. community. ecosyste. m. All Teachers. Teachers and Students. George West. Look through the vocabulary cards on your desk.. Extinction . When an organism is classed as extinct there are no living members of that species left. Extinction is a natural process where organisms that are less suited to an environment die out. Throughout the history of earth there have been several mass extinction events . Biodiversity at regional level is better understood by categorizing species richness into four types. . Whittaker (1972). described three terms for measuring biodiversity over spatial scales: . alpha, beta, and gamma diversity.