Presentation on theme: "Biodiversity and Conservation"— Presentation transcript:
1 Biodiversity and Conservation 7CHAPTERPlaceholder opening page, but maybe we can duplicate the look of the SE chapter opener page by using the same fonts and colors (and maybe that Ch 14 icon?)
2 Brainstorm!Estimate how many different types of species are on earth, including plants, animals, fungi, and microorganisms.
3 Scientists have identified 1.7 to 2 million species to date. HOWEVER, scientists estimate the total number of species on earth is between 3 million to 100 million!!!
4 Lesson 7.1 Our Planet of Life There are more known species of insects than any other form of life. Among known insect species, 40% are beetles.
5 Lesson 7.1 Our Planet of Life BiodiversityDescribes the variety of life across all levels of ecological organizationIncludes three types:Ecosystem diversitySpecies diversityGenetic diversityGenetic DiversitySpecies DiversityEcosystem Diversity
6 Lesson 7.1 Our Planet of Life Ecosystem DiversityThe number and variety of ecosystems in a given areaBrainstorm: List the ecosystems found in Florida. Does Florida have a high Ecosystem Diversity?
7 Species Diversity The number or variety of species in a given area Lesson 7.1 Our Planet of LifeSpecies DiversityThe number or variety of species in a given areaSpeciation increases biodiversity!Extinction decreases biodiversity!
8 Lesson 7.1 Our Planet of Life Genetic DiversityThe differences in DNA among individuals within a speciesThe more genetic diversity in a population, the better the chance for survival because it provides the raw materials for adaptation
9 Lab: How genetically diverse is 1C-310?? Lesson 7.1 Our Planet of LifeLab: How genetically diverse is 1C-310??Work with your table.To find percentage, take the number in the first column (Group Results) and divide it by the second column (Group Total).EXAMPLE: 2 people have curly hair / 4 people in the group = 50%
10 Other Benefits of Biodiversity Lesson 7.1 Our Planet of LifeOther Benefits of BiodiversityAgriculture: Wild strains are cross-bred with related crops to transfer beneficial traits.Medicine: Organisms contain compounds that are useful for treating disease.Ecotourism: Environmentally responsible tourism is a source of income for many nations.The yew tree, an original source of Taxol, a cancer-fighting drugDid You Know? Of the 150 most prescribed drugs in the United States, 118 originated in nature.
11 Causes of Biodiversity Loss Lesson 7.2 Extinction and Biodiversity LossCauses of Biodiversity LossHabitat change and lossInvasive speciesPollutionOverharvestingSiberian tiger
12 Habitat Change and Loss Lesson 7.2 Extinction and Biodiversity LossHabitat Change and LossGreatest cause of biodiversity lossOrganisms, adapted to their habitat, decline in population when the habitat changes.Habitat fragmentation: Patches of suitable habitat surrounded by unsuitable habitatIn general, larger habitat fragments can support greater biodiversity than smaller fragments.Did You Know? Habitat change or destruction is the primary cause of population decline in more than 80% of threatened birds and mammals.
13 Invasive Species, Pollution, and Overharvesting Lesson 7.2 Extinction and Biodiversity LossInvasive Species, Pollution, and OverharvestingInvasive species can out-compete and displace native species.Harmful chemicals and materials that make their way into habitats can poison people and wildlife.Occasionally, species can be driven toward extinction by hunting or overharvesting by humans. Examples include Siberian tigers and passenger pigeons.Once common in North America, the passenger pigeon is now extinct.
14 Climate Change Increasingly becoming a factor in biodiversity loss Lesson 7.2 Extinction and Biodiversity LossClimate ChangeIncreasingly becoming a factor in biodiversity lossUnlike the other factors, climate change will have a potentially global effect on biodiversity.Did You Know? Scientists predict that a 1.5–2.5C global temperature increase could put 20–30% of plant and animal species at increased risk of extinction.
16 Ways to Protect Biodiversity Single Species ApproachEcosystem Approach
17 Ways to Protect Biodiversity Single Species ApproachEcosystem ApproachCloningCaptive Breeding ProgramsSpecies Survival Plan
18 Ways to Protect Biodiversity Single Species ApproachEcosystem ApproachWildlife CorridorsCloningCaptive Breeding ProgramsBiodiversity HotspotsEconomic ApproachesSpecies Survival Plan
19 Lesson 7.3 Protecting Biodiversity Just 2.3% of the planet’s land surface is home to 50% of the world’s plant species and 42% of its vertebrate animal species.
20 Biodiversity Hotspots Lesson 7.3 Protecting BiodiversityBiodiversity HotspotsThe “hotspot approach” focuses attention on areas where the greatest number of species can be protected with the least effort.Hotspots have:At least 1500 plant species found nowhere else in the worldAlready lost 70% of their habitat as a result of human activityThe 34 biodiversity hotspots are home to 50% of Earth’s plant species and 42% of terrestrial vertebrate species.Northern Pintail ducks, Honshu, Japan Japan is one of the world’s biodiversity hotspots.
22 Biodiversity Hotspots Glogster Lesson 7.3 Protecting BiodiversityBiodiversity Hotspots Glogster Go to Make a glogster and include the following information:Location of the hotspot and type of ecosystems found there.Describe at least one endemic plant species and one animal species found thereDescribe the socio-economic conditions (pre-industrial, transitional, industrial, post-industrial)Human induced and/or natural reasons why species biodiversity is decreasing in that regionWhat is being done to protect this hotspotAny interesting information you found about the area (AKA your choice!)LOTS of pictures and color!!