Download Coral Reefs Now

▶▶ Read Coral Reefs Books

Download As PDF : Coral Reefs



Detail books :

Author :

Date : 2013-04-23

Page :

Rating : 4.0

Reviews : 4

Category : Book

Reads or Downloads Coral Reefs Now

0061914967

Coral reef Wikipedia ~ A coral reef is an underwater ecosystem characterized by reefbuilding corals Reefs are formed of colonies of coral polyps held together by calcium carbonate Most coral reefs are built from stony corals whose polyps cluster in groups Coral belongs to the class Anthozoa in the animal phylum Cnidaria

Corals and Coral Reefs Smithsonian Ocean ~ Coral reefs are the most diverse of all marine ecosystems They teem with life with perhaps onequarter of all ocean species depending on reefs for food and shelter This is a remarkable statistic when you consider that reefs cover just a tiny fraction less than one percent of the earth’s surface and less than two percent of the ocean bottom

What Are Coral Reefs Coral Facts ~ The coral species that build reefs are known as hermatypic or hard corals because they extract calcium carbonate from seawater to create a hard durable exoskeleton that protects their soft saclike bodies Other species of corals that are not involved in reef building are known as “soft” corals

NOAA CoRIS What are Coral Reefs ~ The NOAA Coral Reef Conservation Program CRCP is a partnership between the NOAA Line Offices that work on coral reef issues the National Ocean Service the National Marine Fisheries Service the Office of Oceanic and Atmospheric Research and the National Environmental Satellite Data and Information Service

Coral reef geology Britannica ~ Coral reef ridge or hummock formed in shallow ocean areas by algae and the calcareous skeletons of certain coelenterates of which coral polyps are the most important A coral reef may grow into a permanent coral island

Coral reefs WWF ~ Coral reefs only occupy 01 of the area of the ocean but they support 25 of all marine species on the planet In fact the variety of life associated with coral reefs rivals that of the tropical forests of the Amazon or New Guinea Hundreds of millions of people rely on coral reefs for essential

Coral Reefs Biscayne National Park National Park ~ Coral reefs are among the most biologically diverse ecosystems on earth Every crack and crevice seems to be occupied Knowledge of reefs is constantly growing This knowledge will be increasingly valuable as reefs around the world experience problems from pollution overfishing boat groundings climate change

Coral reef ecosystems National Oceanic and Atmospheric ~ Coral reefs are some of the most diverse ecosystems in the world Coral polyps the animals primarily responsible for building reefs can take many forms large reef building colonies graceful flowing fans and even small solitary organisms

Corals National Geographic ~ Coral polyps are tiny softbodied organisms related to sea anemones and jellyfish At their base is a hard protective limestone skeleton called a calicle which forms the structure of coral reefs