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3.1 Measuring Biodiversity - Weebly

Measuring Biodiversity (Page 89-94). Learning Goals I can explain the concept of Biodiversity and identify trends in Biodiversity on Earth. I can explain how Biodiversity is measured. I can explain how to preserve Biodiversity and why preserving Biodiversity is important. Key Concepts Biodiversity is the number and variety of organisms found within a specific region. Scientists have identified about 2 million species on Earth. Key Concepts Scientists measure Biodiversity using several methods. There are places on Earth where there is an exceptionally large numbers of species in a relatively small area. Most Biodiversity hotspots are in tropical areas. Biodome II - Watch This! What is Biodiversity ? Biodiversity is the number and variety of organisms found within a specific region.

Key Concepts •Biodiversity is the number and variety of organisms found within a specific region. •Scientists have identified about 2 million species on Earth.

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Transcription of 3.1 Measuring Biodiversity - Weebly

1 Measuring Biodiversity (Page 89-94). Learning Goals I can explain the concept of Biodiversity and identify trends in Biodiversity on Earth. I can explain how Biodiversity is measured. I can explain how to preserve Biodiversity and why preserving Biodiversity is important. Key Concepts Biodiversity is the number and variety of organisms found within a specific region. Scientists have identified about 2 million species on Earth. Key Concepts Scientists measure Biodiversity using several methods. There are places on Earth where there is an exceptionally large numbers of species in a relatively small area. Most Biodiversity hotspots are in tropical areas. Biodome II - Watch This! What is Biodiversity ? Biodiversity is the number and variety of organisms found within a specific region.

2 There are approximately 5 to 100 million species on Earth. A sampling of fungi collected during summer 2008 in Northern Saskatchewan's mixed woods, near LaRonge, is an example of the species diversity of fungi. In this photo, there are also leaf lichens and mosses. The diverse forest canopy on Barro Colorado Island, Panama, yielded this display of different fruit. Sustaining Biodiversity An ecosystem can sustain Biodiversity only if individual species and their habitats are protected or preserved Measuring Biodiversity 4 Methods for Measuring Biodiversity : Canopy fogging Quadrat sampling Transect sampling Netting Methods of Measuring Biodiversity Canopy Fogging counting the Biodiversity of insects Insecticide is sprayed into the top of a tree & when insects fall they are collected on a screen Quadrat Sampling A quadrat is a known square area that is marked using a pre-made square Different species and their numbers within the quadrat are counted Methods of Measuring Biodiversity Transect sampling a transect line (rope or tape) that has been marked The line is unrolled within the habitat and the number of species along the line are recorded Netting Fine mesh nets are used to capture birds, bats & fish.

3 Once captured, organisms are identified; blood samples maybe taken for genetic analysis & organisms are eventually released Hotspots of Biodiversity A Biodiversity hotspot is a place where there is exceptionally large number of species that live in a relatively small area Hotspots of Biodiversity Biodiversity hotspot in Canada: See here for a collection: Biodiversity -hotspots Carolinian Canada - 2200 plants, 40% of Canada's breeding bird species Leitrim Wetland - 200 species of plants and 90 species of birds Trends in Biodiversity Species richness tends to be higher near the equator Warm temperatures Adequate precipitation Tropical rainforests have highest Biodiversity of any ecosystem Ex. Ontario has 1 species of hummingbird while the Amazon rainforest has over 200.

4 Preserving Biodiversity Protecting an ecosystem preserves Biodiversity It prevents houses/industries from being built in the area This helps to maintain an ecosystem where a variety of species can exist Practice Read pg 89-94. Page 94 # 1-8. Socrative Quiz