Aquatic biome


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Aquatic biome

  1. 1. Aquatic Biome • it makes up the largest part of the biosphere • There are two main types of Aquatic Biomes: 1.Freshwater 2. Marine • High biodiversity
  2. 2. • The amount of dissolved materials present • The depth of water • The availability and quality of light • The nature of the bottom substrate • Water temperature and circulating System
  3. 3. Three Main Ecological Groups 1. Plankton – organisms incapable of swimming from current system to another current system (floating) Two Major Categories 1. Phytoplankton- plant plankton 2. Zooplankton- animal plankton
  4. 4. Three Main Ecological Groups • 2. Nekton - stronger swimming species that are capable of swimming between current system Examples: fishes, squids and whales
  5. 5. Three Main Ecological groups 3. Benthos - attached organisms or resting on bottom mostly filter feeders Examples: seaweeds, barnacles and lobsters
  6. 6. FRESHWATER ECOSYSTEM • It makes up only 0.01% of the worlds water and approximately 0.08% of earth’s surface • Have a salt concentration of less than 1%, • Covers Ponds ,lakes streams and rivers
  7. 7. Two distinct categories of Freshwater Ecosystem 1. Lotic System - Running water - It includes streams and rivers 2. Lentic System - Calm water - includes Lakes and ponds
  8. 8. Streams and Rivers (LOTIC SYSTEM) • These are bodies of flowing water moving in one direction • has higher oxygen levels
  9. 9. 3 DIFFERENT ZONES IN LOTIC SYSTEM 1. Littoral zone - shoreline, shallow water region with light penetrating up to bottom with rooted plants
  10. 10. 2. Limnetic - open water zone to depth of effective light penetration
  11. 11. 3. Profundal - bottom and deep water area beyond effective light penetration ( absent in ponds)
  12. 12. In lotic system …. • Critical water velocity is 50 cm/sec • Lotic food chains are detritus based
  13. 13. PONDS AND LAKES • These regions range in size from just a few square meters to thousands of square kilometers. • Ponds and lakes may have limited species diversity since they are often isolated from one another
  14. 14. Classification of Lake 1. Eutrophic lakes - well nourished lake - shallow - very poor visibility
  15. 15. 2. Oligotrophic Lakes - a poorly nourished lake - Often deep w/ deep banks
  16. 16. 3. Mesotrophic Lake - lake with moderate supply -these are lakes that fall between ntwo extreme of nutrient enrichment
  17. 17. WETLANDS • Wetlands are areas of standing water that support aquatic plants • Many species of amphibians, reptiles, birds (such as ducks and waders), and furbearers can be found in the wetlands
  18. 18. MARINE ECOSYSTEM • The largest of all the ecosystems • Oceans are very large bodies of water that dominate the Earth's surface. • Ocean contains the richest diversity of species even though it contains fewer species than there are on land.
  19. 19. 4 ZONES 1. Intertidal zone - is where the ocean meets the land — sometimes it is submerged and at other times exposed, as waves and tides come in and out
  20. 20. 2. Pelagic zone -includes those waters further from the land, basically the open ocean
  21. 21. 3. Benthic zone - is the area below the pelagic zone, but does not include the very deepest parts of the ocean
  22. 22. 4.Abyssal zone -deep ocean -The water in this region is very cold (around 3° C), highly pressured, high in oxygen content, but low in nutritional content
  23. 23. CORAL REEFS • Sometimes called “Tropical Rainforest of the Ocean” • They can be found as barriers along continents • Highly diverse in species
  24. 24. 3 TYPES OF CORAL REEFS 1. FRINGING REEFS -coral reefs that are close to the shore, separated by low waters
  25. 25. 2. BARRIER REEFS -Reefs that are at least 10 kilometers away from land are called barrier reefs.
  26. 26. 3. ATOLL REEFS -A circular coral island that is far away from land is called an atoll - Atolls form when coral develops on a volcanic island that has sunk below the wateR
  27. 27. ESTUARINES • Are areas where freshwater streams or rivers merge with the Ocean • Microflora like algae, and macroflora, such as seaweeds, marsh grasses, and mangrove trees (only in the tropics), can be found here.
  28. 28. • Estuaries support a diverse fauna, including a variety of worms, oysters, crabs, and waterfowl.
  29. 29. THANK YOU