My Bio Homework
- 1. Intertidal Zone By Brian Mullins
- 2. Tidal Habitats Great places to live : High levels of primary (food) production: driven by phytoplankton Nutrient rich waters created from river drainage into the sea, and upwelling: the replacement of deep, cold water for surface water driven away by winds.
- 3. Different tidal habitats require different adaptations Sandy Beaches and Mud Flats Substrate offers lots of nutrients, but little structure for attachment Animals bury themselves in mud Can also attach to plants Rocky Shores Little protection from strong waves: animals must anchor Complex tide pools possible Seaweeds offer protection from drying Types of Tidal Habitats
- 4. Tidal Zones Tidal habitats are divided into zones based on relative beach location and how often they are covered by water Splash Zone High Tide Zone Middle Tide Zone Low Tide Zone Subtidal Zone Intertidal Zone High, Mid and Low Zones affected daily by changing tides Most adaptation required
- 5. High Tide Zone Increased wave action Species must survive exposure to drying Tide pools provide some protection Higher diversity: includes some animals from splash zone and middle zone (in tide pools)
- 6. Low Tide Zone Most diverse zone: more plants and animals in low tide zone than in all other zones combined Most food and shelter Less exposure to air and heat Animals unable to exist in other zones
- 7. Subtidal Zone Just below Intertidal Zone Almost never exposed Many consumer animals: prey on animals in low tide zone Life forms less tolerant to changes: do not have adaptations to allow them to survive without water
- 8. Each zone requires unique adaptations for survival Splash Zone High Tide Zone Middle Tide Zone Low Tide Zone Subtidal Zone Exposure to Wate r
- 9. Pteropurpura_trialata_is_laying_the_eggs_ acornbarnacle dogwinkles Pisaster Predate mussels rockweed sealettucel Shorecrab
- 10. Human Impact In addition to climatic impacts, people have a dramatic impact on the intertidal zones. While it's illegal to remove as much as a shell from many tidal pools, there is very limited enforcement so buckets of marine plants and animals are carried away from intertidal zones each day.
- 11. Human Impact cont.. That which is not carried away is often crushed or destroyed by sightseers who visit tidal pools and rocky Intertidal zones. This loss and damage affects the biodiversity and food cycle of these precious marine environments. More info at http://geography.about.com/od/physicalge...