BIOA02H3 Lecture Notes - Lecture 13: Invertebrate, Cyanobacteria, Unit

• School: UTSC
• Department: Biological Sciences
• Course: BIOA02H3
• Professor: Ivana Stehlik

Document Summary

Unit 4: global ecology & the anthropocene, part 3. Distribution of aquatic biomes: aquatic biome distributions impacted by, climate, nutrient & oxygen availability, primary producers, buoyance important (structural support is not, water not limiting, distribution of producers governs distribution of consumers, shallow environments (lakes, coasts) Plant, algal and animal debris accumulates in sediments. ~2. 5% of earth"s surface is freshwater, but this is largely frozen (glaciers, permafrost) or below ground. Lakes, rivers, wetlands: variation due to climate, nutrient inputs, oxygen levels. Falling leaves and soil from riverbanks add nutrients (retained best in slow waters: organisms. Small, fast moving streams can"t support photosynthetic organisms, have many animals (fish, insect larvae, mollusks and other animals) Slower moving streams have nutrients and organic matter to support plant and algae growth, & animals that eat these algae. Lakes & ponds: water flow & nutrient ability.