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Name: ______________________________________________________________________________________ 6th Grade Science Date: ________________________ Period: ______________________ Biodiversity DO NOW - My definition (or phrases): _____________________________________________________________________________________________________ Definition: THE VARIETY OF LIFE IN THE WORLD OR PARTICULAR ECOSYSTEM There are three main types of diversity to consider: 1. ECOLOGICAL DIVERSITY – DIFFERENT TYPES OF ECOSYSTEMS IN WORLD 2. SPECIES DIVERSITY – DIFFERENT TYPES OF SPECIES IN AN AREA (CONSIDER AMOUNT AND EVENNESS) 3. GENETIC DIVERISTY – DIFFERENT TYPES OF TRAITS IN A SPECIES Species Diversity vs. Species Richness In the picture to the left, both communities have the same SPECIES RICHNESS. This refers to how in both communities there is four different species of trees (the amount of species in a given area). Community 1 has greater species diversity because ALTHOUGH THEY HAVE THE SAME AMOUNT OF SPECIES, COMMUNITY ONE HAS A MORE EVEN AMOUNT OF EACH SPECIES. Species Diversity in the World Based on the world map above, which area has a greater species diversity and explain why this could be possible. AREAS IN RED OR DARK ORANGE HAVE A GREATER SPECIES DIVERSITY – THEY HAVE ANYWHERE FROM 41-144 TYPES OF SPECIES. THEY HAVE MORE SPECIES IN THESE AREAS BECAUSE THE ABIOTIC FACTORS ARE MORE FAVORABLE. THERE IS MORE SUNLIGHT AND WARMER TEMPERATURES NEAR THE EQUATOR, THERE IS LARGE AMOUNTS OF RAINFALL, AND FERTILE SOIL IN THESE TROPICAL ZONES.