PPT-Chapter 4 Biodiversity and Evolution

What is Biodiversity It is the variety of earths species the genes they contain the ecosystems in which they live and the ecosystems processes such as energy flow and nutrient cycling that sustain all life. 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 Emile Frisson, Director General, Bioversity International. Food Security in Africa – Bridging Research and Practice. Sydney, Australia 29 – 30 November 2012. Context. The Current Situation. 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.. Current Status. Conservation Efforts. Challenges of Managing the Sector. Institutions Managing Forests and Biodiversity in Tamil Nadu. Key Policies and Programs. Impact of Climate Change on Forests and Biodiversity. Ari-Pekka . Auvinen. Finnish Environment Institute. 2016 . Eionet. . Workshop. | . NRCs . Biodiversity, Ecosystems, Indicators and Assessments . 30 June . - . 1 July 2016, . E. uropean. Environment . 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:. 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?. 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.. All seven species in danger through:. Trawler fishing. Destroyed many coral gardens that are turtle feeding grounds. Turtles hunted for leather. Eggs taken for food. Pollution of ocean water. Case Study: The Plight of Sea Turtles. Charles Kahindo . 1. , Franck Theeten . 2. , Patricia Mergen . 2. , Garin Cael. 2. , Olivier Bakasanda . 3. , Motonobu Kasajima . 3. , Patricia Kelbert . 4. , Jörg Holetscheck . 4. ,Elizabeth Arnaud . André Mader. Institute for Global Environmental Strategies (IGES). Institutional structure of the CBD. Executive Secretary. Programme Officers. General service staff. Interns. Contractors. Associate Programme Officers. Scottish Natural Heritage. Three phases. Nature conservation and environmental bodies from five countries (England, Ireland, Northern Ireland, Scotland, Wales) and the River . R. estoration Centre. Led by Scottish Natural Heritage under the auspices of the International Union for Conservation of Nature. . C. Meehan, K. La Spisa, G. Ferguson. Victoria D’Ambrosia . William Floyd High School and Cold Spring Harbor’s DNA Learning Center. Abstract. In an ecosystem, biodiversity is the quantity of different species thriving in an.