Catalina Ecosystem

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by samantha71952
Last updated 5 years ago

Discipline:
Science
Subject:
Ecosystems
Grade:
8

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Catalina Ecosystem

Catalina Island's water supply is very low, which is bad for its inhabitants. The lack of water is due to a huge amount of tourism.

Snakes that are found on Catalina include: the California Kingsnake (Lampropeltis Getulus), San Diego Gopher Snake (Pituophis Melanoleucus), Western Ringneck Snake (Diadophus Punctatus), and many more.

Catalina Island's water plant uses reverse osmosis to desalinate ocean water so it is drinkable. Reverse osmosis is a method in which water is put under extremely high pressure and put through a thin membrane. The membrane allows water molecules to pass through, but not salt or other minerals. It's often called "Freshly squeezed water."

The isthmus (narrow strip of land) naturally separates a part of Catalina from the rest. This isolated section is called the West End, and many plants that are rare on Catalina are found there.

When Spanish explorers found Catalina Island, they brought many plants and animals that still live on the island today. A total of about 400 native plants and 200 non-native plants are found on Catalina.

There are many animals that inhabit Catalina! Bats, shrews, sea lions, owls, hummingbirds, seals, salamanders, eagles, dogs, crickets, frogs, lizards, and rats live on the island, just to name a few.

some sea cucumbers are able to throw their internal organs outside of their body when agitated!

The ratio of ocean water to clean water (before and after reverse osmosis) is about 30:9 gallons. The other 21 gallons are put back in the sea.

A good example of a food chain is the Catalina Island Fox and its prey. They eat most of the living animals and scavenge the dead island organisms. The fox, for example, eats deer, which eat grass.

of Catalina Island

by Sam Nichols #16


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