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Key abiotic characteristics of the ocean

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

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Key abiotic characteristics of the ocean

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  1. 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

  2. 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

  3. 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.

  4. Kelp Forest • Cool, nutrient rich water • Habitat and Food • Can grow 2ft per day, and 100ft deep

  5. Estuary • Mix of fresh and salt water • Nutrient rich • Abundant life – three biomes in one: land meets fresh and salt water.

  6. Deep Sea • Cold, dark, high pressure • No producers • Most of ocean is the deep sea

  7. Sargasso Sea • Open ocean with rafts of Sargasso floating (sea weed) • Fish and invertebrates mimic Sargasso

  8. Polar Ice • Ice covered seas • Life dependent on Plankton (Krill)

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