PPT-Chapter 5 Evolution of Biodiversity

Module 14 The Biodiversity of Earth After reading this module you should be able to understand how we estimate the number of species living on Earth quantify biodiversity describe patterns of relatedness among species using a . 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 Marine and coastal habitats include coral reefs mangrove forests sea grass beds estuaries hydrothermal vents seamounts and soft sediments on the ocean 64258oor deep below the surface More than just a valuable source of food the ocean is one of the l . Kelemework. . Tafere. . Reda. , UNISA. Background. Pastoralism as a mode of production and way of life has existed in East Africa for thousands of years. There are over 200 million pastoralists across the globe, with over 180 million of them currently living in developing countries (. 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. the variety of living organisms within an ecosystem.. Review Q#1-5. 1. What causes the “patchiness” in the Biosphere (Earth)?. The Earth is “patchy” because it is made up of different environments (land, oceans, lakes, ice). . Objectives:. Define the terms . extinction. , . extirpation. and . mass extinction. .. Contrast background extinction rates and periods of mass extinction.. Evaluate the primary causes of biodiversity loss.. Supervisor: Dr. Doug King. Niloofar. . Alavi. Background: Biodiversity and Habitat . H. eterogeneity. Biodiversity:. . T. he . variability among living organisms from all sources including, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part . By . Vaibhavi Apte. Biodiversity ???. Diversity = variety. Bio= living. Thus, variability among living organisms from all sources including inter alia, terrestrial, marine & other aquatic ecosystems and ecological complexes of which they are part of. . Ari-Pekka . Auvinen. Finnish Environment Institute. 2016 . Eionet. . Workshop. | . NRCs . Biodiversity, Ecosystems, Indicators and Assessments . 30 June . - . 1 July 2016, . E. uropean. Environment . Mashiyat Ahmed, Kelly DiResto, Jessica Marcote. Mentored by Cody Onufrock . Long Beach High School. . Abstract. Rewilding. is a conservation strategy that restores and protects natural processes. Through . It is the variety of all the different living things and their homes on the planet. . BIO. . DIVERSITY. Bio= biological organisms . -living things!. diversity= the amount of variation. Chapter Overview Questions. How do scientists account for the development of life on earth?. What is biological evolution by natural selection, and how can it account for the current diversity of organisms on the earth?. 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). History of Evolution. The evolution of life is linked to the physical and chemical evolution of the earth.. Life on earth evolved in two phases over the past 4.7 -4.8 billion years. Chemical evolution (1 billion years) of the organic molecules and systems of chemical reactions needed to form the first proto-cells..