6.3 Biodiversity

AB Which do you like better? Circa 1910

AB Which do you like better? Sugar cane

What do you think biodiversity means?

Bio = Bio diversity What does “ Bio ” mean?

Bio diversity Diversity = Variety What does “ Diversity ” mean?

- “The variety of life in all its forms, levels and combinations” - Includes: ecosystem diversity, species diversity, and genetic diversity

There are 3 components of biodiversity 1. Diversity of genes these are all dogs—but they're not the same because their genes are different. Chihuahua NewfoundlandGreyhound

Diversity of species. Hoary Bat There are 3 components of biodiversity Iwi Kahuli

Variety of ecosystems Each one is different, with its own set of species living in it. Desert Tropical Rain ForestTiaga There are 3 components of biodiversity

Biodiversity has Intrinsic Value Intrinsic Value = Something that has value in and of itself Source: Burmbaugh © AMNH-CBC

Biodiversity also has Utilitarian Value Utilitarian Value = the value something has as a means to another’s end. Utilitarian values include: Goods Services Information

What do we get from biodiversity? Oxygen Oxygen Food Food Clean Water Clean Water Medicine Medicine Aesthetics Aesthetics Ideas Ideas

Should we be concerned about biodiversity? What we know: The Earth is losing species at an alarming rate Some scientists estimate that as many as 3 species per hour are going extinct and 20,000 extinctions occur each year. Some scientists estimate that as many as 3 species per hour are going extinct and 20,000 extinctions occur each year. when species of plants and animals go extinct, many other species are affected. when species of plants and animals go extinct, many other species are affected.

Threats to biodiversity Habitat Loss Introduced Species Pollution Population Growth Over-consumption HIPPO Dilemma

Habitat Fragmentation

Biodiversity Hotspots

Quiz: - Mammals - Birds - Fish - Insects - Flowering Plants - Total # of species recorded - Estimated Total # of species in the World 4,675 9,702 23, , ,968 1,413,000 ~ million species

Protecting Biodiversity How can we protect biodiversity How can we protect biodiversity Stop overharvestingStop overharvesting Sustainable yield Sustainable yield Hunting & fishing laws Hunting & fishing laws Protect habitatProtect habitat Refuges, parks, preserves Refuges, parks, preserves Endangered Species ActEndangered Species Act