A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. They are most commonly found at shallow depths in tropical waters, but deep water and cold water coral reefs exist on smaller scales in other areas.
These omnivores include the Moorish Idol, reef triggerfish, and the raccoon butterflyfish. Finally, the coral community would not be complete without the creatures that make up nature's cleaning crew. These decomposers include the crabs and lobsters that scavenge for food, feeding on decaying plants and animals.
The Primary Consumers – the coral, sea turtle, and fish. The Secondary Consumers – the sharks, anemones, starfish, baracuda, jellyfish, sea snakes and sea slugs. The Scavengers – the fish.
What are the decomposers in the coral reef food web illustration? The decomposers are the polychaete worm and the queen conch.
Many corals will benefit from the food that you feed the fish and invertebrates in your tank. When meaty foods float by or land on corals, they will be consumed if the food is desired by the coral. Copepods, Amphipods, Brine Shrimp and Mysis Shrimp will also be consumed by many corals.
Crabs are omnivores, feeding primarily on algae, and taking any other food, including molluscs, worms, other crustaceans, fungi, bacteria, and detritus, depending on their availability and the crab species.
Herbivorous fish include Acanthurus lineatus or lined surgeonfish (also known as blue-banded surgeonfish, blue-lined surgeonfish, clown surgeonfish, pajama tang, striped surgeonfish, and zebra surgeonfish), Acanthurus nigrofuscus known as the lavender tang, brown tang, or spot-cheeked surgeonfish, and Zebrasoma scopas
Queen parrotfish are herbivores that graze the reef, using their beaks to scrape plants and algae from the reef surface. Oftentimes, this habit involves ingesting corals and other animals as well, but they are primarily herbivorous. Through their feeding strategies, parrotfishes create much of the sand around a reef.
Herbivorous fish conservationThe parrotfish is one of the most important fish living in coral reefs. They spend most of the day nibbling on corals, cleaning algae from their surface. They also eat dead corals—those bits and pieces that protrude from the reef—and later excrete them as white sand.
They discover coral flagellates. And sings while it does it!†Local business owners, however, embraced the discovery. “If coral can communicate with other coral, it stands to reason it can communicate with other organisms, even humans†said Elena Havens, owner of the Blacktip Haven resort.
Salmon are carnivorous. They are fed a meal produced from catching other wild fish and other marine organisms.
Marine herbivores are found within four groups of species in the animal kingdom -- invertebrates, fish, reptiles and mammals -- and include zooplankton, mollusks, the green sea turtle, the marine iguana and some fish species. Manatees and dugongs are the only herbivores among marine mammals.
Jellyfish are like other cnidarians generally carnivorous (or parasitic), feeding on planktonic organisms, crustaceans, small fish, fish eggs and larvae, and other jellyfish, ingesting food and voiding undigested waste through the mouth.
Phytoplankton are tiny single celled plants too small to see with the naked eye.
Animals that eat phytoplankton are called herbivores. The most common ocean herbivore is zooplankton. Another ocean herbivore is krill.
Food Chains.
| - | food |
|---|
| manu | animals |
| La'Ä | The Sun |
| - | krill |
| - | food chain |
Like many species of damselfishes in the Caribbean and around the world, threespot damselfish are herbivores that cultivate a garden of their preferred algae. They carefully remove other algae and small invertebrates in order to encourage growth of their favorite species.
Most corals are both heterotrophic (catching nutrition from outside sources) and autotrophic (relying on photosynthesis from symbiotic algae). Coral polyps capture plankton and particulate matter from the water with their tentacles.
Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton.
Most reef-building corals contain photosynthetic algae, called zooxanthellae, that live in their tissues. The corals and algae have a mutualistic relationship. The coral provides the algae with a protected environment and compounds they need for photosynthesis.
Though coral may look like a colorful plant growing from roots in the seafloor, it is actually an animal. Corals are known as colonial organisms, because many individual creatures live and grow while connected to each other. They are also dependent on one another for survival.
Since corals live in a symbiotic relationship with microscopically small plant cells, they require certain amounts of nutrients as “fertiliserâ€. In fact, the experimental addition of nutrients can promote coral growth. “Nutrient pollution will continue to increase in many coral reefs.
Almost all corals are colonial organisms. This means that they are composed of hundreds to hundreds of thousands of individual animals, called polyps.
In addition to weather, corals are vulnerable to predation. Fish, marine worms, barnacles, crabs, snails and sea stars all prey on the soft inner tissues of coral polyps. In extreme cases, entire reefs can be devastated if predator populations become too high.
A single coral animal is a polyp. This is how a single coral can, at least theoretically, live forever. Individual polyps will die but the colony will go on growing indefinitely provided that the environmental conditions continue to support its survival. Coral have been found that are more than 4,000 years old.
In novel lab observations of interactions between corals and planktonic bacteria, known as picoplankton, researchers found that corals are selectively feeding on specific types of bacteria -- the same bacteria whose growth is promoted by organic matter and nutrients that are released by the corals.
Corals are also secondary consumers at the third trophic level, because they also eat zooplankton and other small organisms they catch with their tentacles. Zooplankton that eat phytoplankton are primary consumers at the second trophic level.
Larger organisms, like small fish, crustaceans, sea stars and sea anemones, feed on algae or phytoplankton, too. Coral is actually an animal and a secondary consumer.
These carnivorous coral polyps reach their tentacles out to search for food. If you have ever seen branching corals spreading their arms out like tree limbs, you can see why early scientists thought corals were plants. But these tiny, soft-bodied creatures are carnivores, despite being sessile, or fixed to one spot.
Phytoplankton, coralline algae and seaweed are photosynthetic primary producers that commonly inhabit the coral reef. In deep reef areas that lack sunlight, producers perform chemosynthesis to make their own food.
Other sea creatures classified as decomposers include crustaceans and mollusks, bacteria, fungi, sea cucumbers, starfish, sea urchins, and other kinds of marine worms. Without decomposers like the Christmas tree worm, organic matter would just pile up and the nutrients in it would go to waste.
At the top of the reef food chain are the tertiary consumers, the bigger animals that feed on smaller fish and crustaceans. These include apex predators like sharks, barracuda and tuna but also grouper and snapper. These are the fish that are commercially fished at unsustainable levels.
A producer is a living thing, like a plant, that can take the Sun's energy and store it as food. Some examples of producers include the Date Palm Tree, the Eragrostis, and the African Welwitchsia.
The greatest threat to staghorn coral is ocean warming, which causes the corals to release the algae that live in their tissue and provide them food, usually causing death.
Scientific Classification.
| Kingdom | Animalia |
|---|
| Family | Acroporidae |
| Genus | Acropora |
| Species | cervicornis |
A starfish is a tertiary consumer in the ocean ecosystem.
