key abiotic characteristics of the ocean
DESCRIPTION
Key abiotic characteristics of the ocean. Temperature- Cold at the poles - Cold in the deep. Depth – Avg depth: 2.5 Miles - Deepest: 7 Miles. Light- Dark below 1000 ft - Most life in first 1000 ft. Salinity - Salty. Plankton DRIFTERS- don’t actively swim - PowerPoint PPT PresentationTRANSCRIPT
Key abiotic characteristics of the ocean
• Temperature- Cold at the poles
- Cold in the deep• Depth – Avg depth: 2.5 Miles - Deepest: 7 Miles
• Light- Dark below 1000 ft - Most life in first 1000 ft• Salinity - Salty
Plankton• DRIFTERS- don’t actively swim• Found worldwide
Phytoplankton• Producers• Base of oceanic food web• Make over half of world’s oxygen
Zooplankton• Consumers• Most are microscopic, some, like
jellyfish can be 10 ft wide or 100 ft long
Coral Reef• Few nutrients in water – Clear• Coral live symbiotically with
zooxanthellae (algae)• Coral get food from the algae• Algae get fertilizer (waste) from
coral.
Kelp Forest• Cool, nutrient rich water• Habitat and Food• Can grow 2ft per day, and 100ft
deep
Estuary• Mix of fresh and salt water• Nutrient rich• Abundant life – three biomes in
one: land meets fresh and salt water.
Deep Sea• Cold, dark, high pressure• No producers• Most of ocean is the deep sea
Sargasso Sea• Open ocean with rafts of Sargasso floating (sea weed)• Fish and invertebrates mimic Sargasso
Polar Ice• Ice covered seas• Life dependent on Plankton (Krill)