Dec 08, 2016 powerpoint presentation for duel enrollment enc 1101 class. Coral reefs are one of the most biologically diverse ecosystems in the world they occupy less than 1% of the ocean floor, but are inhabited by at least 25% of all marine species. Dodgea anational coral reef institute, nova southeastern university, dania, florida, usa bkhaled bin sultan living oceans foundation, landover, maryland, usa. Its home to countless species of colourfull fish, molluscs and starfish, plus turtles, dolphins and sharks. The impacts from unsustainable fishing on coral reef areas can lead to the depletion of key reef species in many locations.
Called rainforests of the sea, these coral reefs are home to a quarter of all marine species, provide habitat and breeding ground for commercially important species, provide natural buffers to the coastlines from erosions, and contain the highest biodiversity of. Reef types quiz reef types this lesson is a part of the reef types unit, which explains bathymetric features of the ocean floor and how this relates to coral reefs. Zooxanthellae algae require sunlight for photosynthesis, and coral reefs usually begin to form in clear, shallow waters near land because water gradually filters out sunlight with depth. Additionally, certain types of fishing gear can inflict serious physical damage to coral reefs. Nov 15, 2019 the three main types of coral reefs are fringing, barrier, and atoll. This relationship with land is used to categorize the different types of coral reef.
They closely border the coastline or are separated from it by a narrow stretch of water. Scientists estimate that there are one to eight million undiscovered species living in and around the reef. Though they may look like colorful plants, coral are in fact made up of tiny animals called polyps. Powerpoint presentation for duel enrollment enc 1101 class. Types of coral reefs there are three main types of coral reefs. Other types apart from an atoll, fringing reef and a barrier reef, other coral reefs remain.
Fringe reef fringe reefs grow close to the shore line. Disturbances affecting coral reefs include human caused and natural events. Barrier reefs are the largest, most extensive, highest and widest reefs of all types of coral. Most coral reefs are built from stony corals, whose polyps cluster in groups. Local communities often support coral reef conservation in order to raise income potential associated with tourism andor improved resource levels. Ppt corals and coral reefs powerpoint presentation. This guide provides a summary of taxonomic features for the key coral groups we find in the new zealand region. It can be attached to the shore or there may be a narrow strip of water called a lagoon or channel between the land and the coral reef. This type of reef grows seaward directly from the shore. This kind of association where two different kinds of organisms benefit from each other is called a mutualistic association.
Phylum cnidaria class anthozoa corals, sea anemones, sea pens. Coral is a general term used to describe several different groups of animals in the phylum cnidaria. Introduction to the different types of corals coral forum. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Coral reefs threats and conservation in an era of global change bernhard riegl,a andy bruckner, b steve l. The polyps live together and work together to build the coral that is their home. This would be great to use for an ocean unit as the graphics are visually stimulating. Fringing reefs are the most common type of reef that we see. There are a multitude of coral species found in the world, and they live in very different habitats and depths. This 14slide ppt discusses where coral reefs are located, basic information about coral reefs and problems facing coral reefs today. Sea turtles, jellyfish, sharks, and dolphins all live in coral reefs.
Coral reefs and climate change coral reef ecological. A coral reef may grow into a permanent coral island. Atolls usually form when islands surrounded by fringing reefs sink into the sea or the sea level rises around them these islands are often the tops of underwater volcanoes. Aug 17, 2017 coral reefs theory, types, formation 1. General characteristics coral reefs are built from the remains of stony. Ppt corals and coral reefs powerpoint presentation free. A coral reef is an underwater ecosystem characterized by reefbuilding corals. Types of reefs there are three main types of reefs. Jun 29, 2015 to download environment pdf slides click here. Corals and coral reefs is the property of its rightful owner. Often called the rainforests of the sea, coral reefs are home to a spectacular variety of organisms. The largest coral reefs off the coastal platforms but parallel to them are called barrier reefs fig. Mar 25, 2015 distribution of coral reefs in various oceans persian gulf and red sea contain a small percentage of worlds coral reefs indian ocean24% of the worlds coral reefs. In the modern era, coral reefs passes and channels provide safe navigation chan nels for boats, and harbors are often sighted on reefs because they provide natural protection from.
Below is a summary of what is included in the entire unit. In the last few decades, over 35 million acres of coral reefs have been obliterated. Called rainforests of the sea, these coral reefs are home to a quarter of all marine species, provide habitat and breeding ground for commercially important species, provide natural buffers to the coastlines from erosions, and contain the highest. Reef types great barrier reef national oceanic and. Queensland, australia unesco world heritage site inscription. Their most distinguishing feature is that they are isolated from the shores by a lagoon of considerable depth. Dodgea anational coral reef institute, nova southeastern university, dania, florida, usa bkhaled bin sultan living oceans foundation, landover, maryland, usa cbishop museum, honolulu, hawaii, usa.
Reefs protect coastlines from storms and erosion and provide habitat, spawning and nursery grounds for economically important fish species. These do best in areas with little rain and low land run off. 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. Corals and reefs for pdf international coral reef initiative. Introduction to the different types of corals coral. The great barrier reef has more than 2,600 kinds of coral altogether. For reef tank owners, adding corals to your tank is one of the most exciting experience. Lesson 1 an introduction to the coral reef habitat lesson at a glance students create concept maps to determine the basic needs of organisms for survival. Barrier reefs follow coastline but are separated by lagoons.
Vaughan 1917 has defined coral reef as a ridge or mound of lime stone, the upper surface of which is near the. Fringing reefs lie near the shores of islands or continents. The three main types of coral reefs are fringing, barrier, and atoll. Most of the substantial coral reefs found today are between 5,000 and 10,000 years old, according to coral. Coral reefs are full of many types of plants and animals.
Coral reefs basic information, types, exampal, condition for formation powerpoint ppt presentation free to view. Corals and coral reefs a free powerpoint ppt presentation displayed as a flash slide show on id. Types of coral reefs and its distribution slideshare. Introduction to coral reefs introductionrationale coral reefs are known as the rainforests of the sea. This website and its content is subject to our terms and conditions. Due to their unique complexity and diversity, coral.
Iucn international union for conservation of nature coral reefs. Corals, with their stunning myriad of colors and depth, often introduce a whole new level of aesthetic to your tank. They form borders along the shoreline and surrounding islands. For both coral types, over time they form extensive reefs. Coral reefs are the most diverse of all marine ecosystems. The year in ecology and conservation biology, 2009 coral reefs threats and conservation in an era of global change bernhard riegl,a andy bruckner,b steve l. Coral reefs can have different sizes, shapes, and colors. Coral reefs and island formation 500 million people worldwide depend on reefs, 30 million are totally dependent on them for food. Through a powerpoint presentation, students are introduced to coral reef habitats, reef zones and types of coral common in hawaii. Such fringing reefs are found along sakau island, southern florida, mehetia island of society group of islands etc.
Types of coral reefs coral reefs are broken down into 3 main categories. Pdf slides of all the environment videos, 700 slides for free video lectures and st. Threats to coral reefs natural and human threats from nature unusually strong waves such as those from a hurricane water temperature changes dramatic changes in saltiness of water predators, such as snails and crown of thorns starfish overgrowth of algae coraleating snails crown of thorns starfish threats from humans pollution sediments block light from. They teem with life, with perhaps onequarter of all ocean species depending on reefs for food and shelter. Volcanic island with a welldeveloped barrier reef lagoon system. A coral reef, in fact, is a ridge of limestone whose upper surface is just below the sea surface and it is exposed at low tides. Fringing reef barrier reef atoll by using hand drawn diagrams and images to four kinds of coral reef tiny coral polyps build the massive structure of the reef. Just as there are different types of corals, there are different types of coral reefs. This creates a lagoon of open, often deep water between the reef and the shore. Thirtytwo of the 33 animal phyla are found on coral reefs, compared with nine in tropical rain forests. Such losses often have a ripple effect, not just on the coral reef ecosystems themselves, but also on the local economies that depend on them. Iucn international union for conservation of nature. Hard corals remove calcium from surrounding seawater and use this to create the carbonate structures that form the reefs.
Barrie r reefs are similar to fringing reefs in that they also border a shoreline. Types of corals types of reefs is the property of its rightful owner. Teacher will need to source material on threats to reefs and management solutions. Background information reef types bathymetric features of the oceans floor coral reef. Even the coral are like buildings full of small animals called polyps. These invertebrates can range from the size of a pinhead to a bit. This is the most common type of coral reef and are continuous with the land mass. Within the group of coral species used for jewellery there is also a wide range of habitat conditions. A fringing reef is a reef that forms around a land mass. Reefbuilding corals have evolved an essential symbiotic relationship with a type of brown algae called. Barrier reefs are some of the most wellknown types of coral reefs and are located in varied regions of the world. They are most often found in warm, clear, shallow water where. All together, it covers an area about half the size of texas a coral reef is home to alot of sea animals and plants.
Lesson looking at the importance and protection of coral reefs around the world. Types of reefs and reef formation university of hawaii. Scientists generally divide coral reefs into four classes. Their bright, vivid colors can be seen in tropical ocean waters around the globe. They cover less than one percent of earths surface, but are home to one quarter of known marine fish species. Aug 23, 20 for reef tank owners, adding corals to your tank is one of the most exciting experience. Background information reef types bathymetric features of the oceans floor coral reef geomorphology. Instructional objectives i can describe the living conditions coral reefs need to develop and survive. Iucn international union for conservation of nature ecosystems and livelihoods group asia, iucn. Threats to coral reefs natural and human threats from nature unusually strong waves such as those from a hurricane water temperature changes dramatic changes in saltiness of water predators, such as snails and crown of thorns starfish overgrowth of algae coral eating snails crown of thorns starfish threats from humans pollution sediments block light from zooxanthellae chemicals either poison. These bind together coral, sand and pieces of rubble to form a more solid structure known as the reef. Fringing reefs grow near the coastline around islands and continents.
However, with the many different types of corals available, it can be quite the daunting tas. If so, share your ppt presentation slides online with. Coral reefs are home to over 25 percent of all marine life and are among the worlds most fragile and endangered ecosystems. The three main types of reefs are fringing reefs, barrier reefs and atolls veron, 2000. Ppt types of corals types of reefs powerpoint presentation. Schools of colorful pennantfish, pyramid, and milletseed butterflyfish live on an atoll reef in the northwestern hawaiian islands. Coral reefs its types and distribution rehana raj dfk 7 i ph. Distribution and conditions of coral reef formation 3. Coral reefs and climate change free download as powerpoint presentation. Coral reefs are found in shallow waters of the ocean. Distribution of coral reefs in various oceans persian gulf and red sea contain a small percentage of worlds coral reefs indian ocean24% of the worlds coral reefs. Reef building corals secrete calcium carbonate which acts like a cement. This is a remarkable statistic when you consider that reefs cover just a tiny fraction less than one percent of the earths surface and less than two percent of the ocean bottom. Fringing reefs fringing reefs are coral reefs that grow in shallow waters.
225 1241 347 1601 488 246 566 521 873 1419 1071 750 751 591 227 1170 1140 302 380 438 371 148 950 1240 632 140 1044 1031 963 7 1189 489 483 1366 134 764 607 370 56 1308 574 765 891