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Ecosystem of the coral reef
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Coral environments are vivid and diverse communities found in the clear, warm, shallow waters of the tropics. Coral reefs are home to an astounding number of fish and they play an important role in the ocean. The corals begin life as larvae floating in the ocean until they attach themselves to a hard surface and eventually develop into polyps. The polyps then multiply themselves; until a colony is formed. Corals grow only fifteen centimeters a year and fully mature corals take thousands of years. All organisms rely on the coral at some point or another. Whether it be for territory, food or for reproduction.
The Coral environments are home to many species and there is constant conflict. All species have to find their own space and way of surviving
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Numerous breeding strategies exist, but each is targeted at maximizing the reproduction of species. All members of the shrimp colony are the offspring of one female. She is the queen and the only one to produce eggs. Brown surgeonfish wait until the light the light fades and then the females in the group release their eggs while the quickest males in the group try to fertilize them. The Banded pipe fish find their partner and create a bond before they entwine their bodies to pass on the eggs to the male. The males keep the eggs until the young pipefish are born ten days later. During those days, the females starts developing a new batch of eggs and by sharing the work, the pipe fish double the offspring they can produce. The male Flamboyant cuttlefish get the attention of the female by using his colorful display to seduce the female before she accepts and the transfer the sperm is very quick. After a year long pregnancy, the large humpback whale goes to the reefs to give birth while the singing males go there to mate. The louder and longer he sings, the more mating opportunities he would get. Corals also reproduce sexually by using the rising temperatures of spring and a male coral releases sperm, while a female nearby would release eggs into the ocean. Some corals exist as both male and female and release eggs already pre-wrapped in sperm. Their fertilized eggs then drift away from the
The humuhumu are a very independent and aggressive fish therefore they breed externally,but still heterosexualy.. Once they reach the age of maturity, the female will lay her eggs in the wedges of a coral which will then be fertilized by a male soon after. Then once they are fertilized the female will come back and guard the ...
The outer layer of a reef consists of living animals, or polyps, of coral. Single-celled algae called zooxanthellae live within the coral polyps, and a skeleton containing filamentous green algae surrounds them. The photosynthetic zooxanthellae and green algae transfer food energy directly to the coral polyps, while acquiring scarce nutrients from the coral. The numerous micro habitats of coral reefs and the high biological productivity support a great diversity of other life.
The courting ritual begins with the males circling females in an offshore mating ground and then the males approach and bite a female’s neck and if she accepts, they mate; if she does not accept, she swims to the bottom of the mating grounds (Deurmit L 2007). Males have long claws to use during mating because other males try to remove the mating male in order to mate with the female (Deurmit L 2007). Caretta caretta are polygynandrous and breed seasonally in the early summer (Deurmit L 2007). With mating, the females have the ability to store sperm throughout the reproductive season (Sakaoka K et al.). This characteristic developed with “changes in the sperm storage tubules (SSTs) in the oviduct” and allows the females to reproduce more (Sakaoka K et al.). This storage helps to combat climate change because Caretta caretta, as a species, only breed during certain temperatures (Sakaoka K et al.). Female loggerhead turtles have developed sperm storage abilities within mating to combat climate
The North American brine shrimp goes through several stages in development before reaching adulthood. The brine shrimp is first encased in a protective capsule within a female brine shrimp’s brood sac (Drewes, C, 2006). Here, egg development rapidly...
This article discusses how important the organisms symbiotic with coral reefs are, as well as how important coral reefs are to our environment. Also explained is how natural and non natural things things like hurricanes and overfishing affects them. A study is quoted about how water acidity also plays a role in the bleaching of corals. Lastly, restoration and conservation efforts are discussed and how we could possibly help our oceans.
Coral Reefs are said to be the “tropical rainforest” of the sea. They are home to over 25% of all marine life (http://coralreefalliance.org.stories/storyReader$77). Over the past few decades they have been subjected to destructive anthropogenic practices. Some of the major threats to coral reefs include sedimentation, water pollution, harmful recreational activities, and global warming. All of these things cause stress on corals and can potentially cause mortality. Corals are made up of two parts, a polyp and zooxanthellae. A polyp is a calcerous body that grows from a hard part of the ocean floor. Zooxanthellae is a photosynthetic algae which lives in the polyp and provide energy for themselves and the coral. In many cases, corals undergo “bleaching,” which is a process where corals lose the zooxantheallae or chlorophyll pigment, and turn white (Wilkinson et all). After bleaching corals can survive for several months. It is possible for corals to recover by hosting more zooxantheallae, but it can take between 5 and 50 years for them to recover completely (Wilkinson et all, 1999).
Imagine a lush underwater place. Beautiful structures colorful animals and places that would never have been thought of before. In reality that's not what it really looks like, really the ocean is a desolate place that is barren like a desert. Many marine species have been lost by as much as 49%.(seeker) A big part of that reason is because of coral bleaching which causes as stated above a decline in species that depend on the coral as there home. Coral bleaching is a serious problem that could cause problems for everyone if we don’t fix it.
The world’s coral reefs are quintessential to global biodiversity, so much so that they are often referred to as the "rainforests of the sea". Although their actual space occupied by reefs is relatively small, constituting less than 0.1% of the world's ocean surface, they support over 25% of all marine species on earth. They provide complex and varied marine habitats that support a wide range of other organisms including, but not limited to, fish, mollusks, worms, crustaceans, echinoderms, sponges, tunicates and other cnidarians. Some of these animals feed directly on the corals, while others graze on algae on the reef. The reef also provides a protective habitat for many of these animals.
All over the world coral reefs play an important part in our environment. Not only are the reefs colorful and beautiful to look at but the coral reefs house several different types of fish and other sea creatures. Coral reefs have started to decline over the years due to “climate change, El Nino events, overfishing, pollution and other pressures” (Newnham 1). A healthy coral reef can also collapse due to a natural disaster (Newnham 2). There can be several different reasons why a coral reef has started to decline or has been destroyed.
The battle between sexual and asexual reproduction is a competition that has been ongoing for millions of years. Somewhere along the way due to its higher level of genetic variation, sexual reproduction was able to overcome the two fold advantage of asexual reproduction, and now dominates reproduction in organisms. However, some types of organisms such as worms and corals have acquired the ability to reproduce both sexually and asexually. The purpose of this paper is to explore the differences in asexual and sexual reproduction both from a biological and an evolutionary standpoint and to explain why evolution has made it possible for soft corals to reproduce both sexually and asexually.
Located in tropical ocean waters, coral reefs provide priceless resources to both human and marine life. They exist in an area about 30 degrees on either side of the equator. Coral reefs are home to more species than any other marine ecosystem. This includes over 1500 types of fish and 500 different types of algae. (Encarta) However, nearly 60% of coral reefs are in serious danger due to both natural and man-made causes.
We need coral reefs, and not just to make the ocean look pretty and colourful, they are more than just that…
In conclusion, I would like to say that before writing this paper, I had no idea how important coral reefs were to the earth. I have learned a lot and I think that if more people were informed about the positive capabilities of them, humans wouldn't be so careless about them.
A coral reef is scientifically defined as limestone ridges that are created out of coral animals. These types of tiny animals are called coral polyps. Overtime, coral polys produce and accumulate into limestone. Inside the cracks and chinks of the limestone reside thousands of species. Since there are so many diverse species that live in the limestone, coral reefs make up some of the most diverse ecosystems on the Earth. These ecosystems can only function in clear, warm salt water, which is usually located in tropical regions. These reefs are usually located in shallow waters so that they are close to the surface. They are situated in this environment so that there is enough sunlight for photosynthesis which is important for the growth and development of the reefs.