Why do kelp forests grow so fast in cold coastal waters?
Quick Answer
Kelp grows quickly because it absorbs nutrients efficiently and can turn sunlight and dissolved minerals into rapid biomass in nutrient-rich waters. Cold, upwelling seas often provide ideal conditions.
The Full Story
Kelp is a large brown alga that can grow at astonishing rates when conditions are right. Cold coastal waters often bring nutrient-rich deep water to the surface through upwelling, and kelp uses those nutrients to build long blades and holdfasts. Some giant kelps can grow very rapidly, making kelp forests among the most productive ecosystems on Earth. These forests provide shelter for fish, sea otters, and many invertebrates. They also help dampen waves and stabilize coastal ecosystems.
Key Facts
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"Why underwater forests can grow at lightning speed"