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2021-06-17

Which marine ecosystem has the fewest available nutrients and lowest productivity a open ocean c coral reefs D continental shelf?

Which marine ecosystem has the fewest available nutrients and lowest productivity a open ocean c coral reefs D continental shelf?

Explanation: The open ocean ecosystems have the least available nutrients and lowest productivity. The limiting factors in an marine habitat are light and nutrients.

What are the 3 major categories of marine ecosystems?

These include the open ocean, the deep-sea ocean, and coastal marine ecosystems, each of which have different physical and biological characteristics.

Why is the marine biome unique?

The marine biome is an environment characterized by the presence of salt water. The marine biome is found in all of Earth’s oceans and is the largest biome in the world. The marine biome is home to an amazing array of living organisms, from the enormous blue whale to microscopic cyanobacteria.

What factors limit the productivity of a marine ecosystem?

In the vast unproductive low- and mid-latitude ocean, warm and sunlit surface water is separated from cold, nutrient-rich interior water by a strong density difference that restricts mixing of water and thereby reduces nutrient supply, which becomes the limiting factor for productivity.

What makes the Antarctic seas some of the most productive marine ecosystems?

Antarctic seas are extremely productive because phytoplankton grows abundantly during the extended daylight of summer and feeds huge populations of krill. Krill, shrimplike crustaceans, are a key animal in this ecosystem, as food for top predators: whales, penguins, and seals.

Why are Antarctic seas more productive?

Why is cold water more productive? Cold water can hold more dissolved oxygen than warm water. The levels of dissolved oxygen in Antarctic waters are so high that many fish have few or no red blood cells (the blood cells other animals, including humans, use to carry oxygen).

What is the food chain in Antarctica?

Antarctica supports a wide range of organisms from algae to large animals. All these organisms are interconnected within a food web and rely on each other for survival. A wide range of plants and animals live in Antarctica….Decomposers.

food chain
whale
u / ai to bite, eat
energy

What do whales in Antarctica eat?

Killer whales (or orcas) prey on fish, squid, penguins, seals, dolphins, porpoises, and even other whales.

Can a jellyfish kill a whale?

At 200,000 kg, the whale needs to be stung by 20,000 m of tentacles. Each jellyfish has 15 tentacles, each 3 m long. To release enough venom for a whale fatality, you need 445 jellyfish, each of whose tentacles must fully discharge on the whale’s incredibly thick skin to envenomate.