apes unit 1

Littoral zone

shallow near shore; light reaches bottom; rooted/floating plants flourish.(Lake fw)

Limnetic zone

well-lit open surface water; supports phytoplankton/zooplankton and many consumers; produces food and oxygen for much of the lake.(lake/fw)

profundal zone

deep, low/no light; too dark for photosynthesis; often low oxygen; inhabited by organisms adapted to cool, dark conditions.(lake/fw)

benthic zone

bottom sediments; important for decomposers and nutrient storage; organisms tolerate cooler temperatures and lower oxygen.(lake/fw)

Intertidal zone

area between high tide and low tide(ocean/sw)

Phonic zone

where phytoplankton produce a large amount of planets oxygen and take up large amounts of co2(ocean/sw)

Aphotic zone

Deeper layer of water that sufficient sunlight for photosynthesis doesn’t reach(ocean/sw)

Benthic zone

The ocean floor

Eutrophication

1. Nutrient runoff

2. Excess nutrients enter waters

3. Algae grow 

   1. create algal bloom

   2. algae die

4. Sunlight blocked

5. Oxygen consumed

   1. decomposition

6. Fish suffocate