Jellyfish Lake
Jellyfish Lake is a marine lake. It is connected to the ocean by underwater tunnels. It was formed 12,000 years ago when the ocean water went down and left water trapped inside on an island along with animals that inhabit this lake now. There are two layers of this lake, an oxygenated top layer (mixolimnion) and a bottom anoxic layer (monimolimnion). These layers never mix because the lake is stratified. The top 3 meters of the anoxic layer is bacteria. One of the species of bacteria is purple photosynthetic sulfur bacterium. This layer of bacteria absorbs all the sunlight so that the anoxic layer is dark, but clear. There is depressions of limestone that surrounds the inside of the lake. The size of the lake is 460 m by 160m, surface area- 0.057 sq km and a depth of 50m. There is two species of jellyfish in this lake; Golden jellyfish and Moon jellyfish.
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Their group name is smack and they are invertebrates. They group up around the western shore before sunrise, and around 6 am, they start swimming east towards the sunlight. Once they have almost reached the eastern shore, they stop so that they are not under the trees shadows, where their primary predators live, anemones. In the afternoon, when the sun slowly slips back towards the western shore, the jellies follow, awaiting there until dawn. This daily migration is also beneficial for the lake. As the jellies swim back and forth, they churn the water that contains nutrients and small organisms that are the base of this ecosystems food chain. These jellyfish don’t just like to bask in the sun, they need it to survive. Algae lives inside them called zooxanthellae. This algae provides the jellyfish with energy by using
A seismograph station is located 2000 km from an earthquake’s epicenter. Explain the order that the S and P waves will arrive at the station by using the characteristics of the waves.
Lake Mungo is a dry lake in south-western New South Wales. There have been various important archaeological findings at Lake Mungo. Most significantly the discovery of Mungo Man and Mungo Lady, the oldest human remains ever found in Australia. Lake Mungo holds some of the oldest archaeological evidence in Australia and the world.
The objective of this experiment was to test the effect of light exposure on the regeneration of Dugesia dorotocephala. Dorotocephala is a species which belongs to the kingdom Animalia, class Turbellaria, order Seriata, these worms are classified in the suborder Tricladida based on the three main branches of their digestive system. They are further subdivided based upon ecological habitat. They come in freshwater, marine and terrestrial forms (Alvarado, Reddien). they belong to the family Planariidae and genus Dugesia. These creatures display bilateral symmetry and are classified as metazoans (eumetazoans). Dugesia are found in freshwater habitats in various regions of the world. They inhabit places in Africa, the Middle East, Europe, Asia and even parts of Australia. These small animals tend to be elongated with a triangular head. They possess a dorsal surface coated in shades of grey, black and brown, and a ventral which is a paler shade than the dorsal side. In general they are small and soft bodied which allows them to hide in tight spaces. They are classified as free living and lack a coelom, a hemal system and a circulatory system. Because of this many of their functions depend on diffusion. Freshwater turbellarians are benthic inhabitants of lakes, ponds, springs and streams. Their bodies are covered with cilia and they possess a syncytial epidermis. These small animals lack appendages and rely on cilia to glide over surfaces.
Phytoplanktons are a very important part of ocean life. The carbon dioxide in the atmosphere is in balance with carbon dioxide in the ocean. During photosynthesis, phyto...
...er what manipulating this environment may due to the jellyfish. Unfortunately, in many cases we are improving conditions for them and as a result degrading our own situation.
Minneapolis,Minnesota - Hold on to your snorkel - WaterPark season is finally here and if the idea of Monster Water Rides has you shaking in your floatation device, your not alone.
The box jellyfish Tripedalia cystophora is a small jellyfish that can be at least 1cm long. Its bell is shaped somewhat like a square, which give it the name “box” jellyfish. Each of the four bottom corners of the bell have three tentacles. Even though it is in the same family as the sea wasp, T. cystophora is harmless. This jellyfish has been observed living in mangrove swamps where it stays in the light near the surface and feeds on copepods like Dioithona oculata. T. cystophora is diurnal, so it is actively feeding and moving about during the day, and at night, it rests on the muddy floor of the mangrove swamps.
This is representative of how eutrophication works in an aquatic environment. It shows that the greater the number of blue-green algae then the faster the oxygen depletion
Although there are many organisms that live in the deepest part of the ocean, the lantern fish is one with many adaptations. Being amazingly adapted creatures, lantern fish have extremely small organs that are called photophores that shine light. The ligh...
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.
Do you love the slimy,green,and gooey, flavor of kelp? Many people don't , not realizing
...through the fish's guts. The revelation of this information could help other scientists have a better understanding of the potential threat these harmful bacteria pose and the role that this new ecosystem plays in the larger ocean ecosystem, including its potential to change the nutrients contained in the water.
With increasing global surface temperature in addition to anthropogenic interference, the possibility of intense as well as frequent climate disasters are indefinite. Droughts are often caused by human activity, and they result in devastating conditions. Socioeconomic droughts occur when there is water stress caused by food production, diminished supplies, greenhouse gas emissions, land use change, and more. Developed and undeveloped countries are affected internationally. Lake Urmia, located in Northwest Iran, was once the second largest saltwater lake on earth; however, in the past 15 years, 20 man-made dams have been operating in Urmia’s basin. Lake Urmia has decreased in size by about 80%. The lake’s hypersaline desiccation will increase
What they do is produce light (bioluminescence) that helps the squid camouflage itself at night. The squid has a special way of sensing how much moonlight is coming down, and then using a shutter, can control how much light comes out. This makes the squid not cast a shadow, making it harder for predators and prey to see it. During the day, the squid pumps out the dead bacteria, and the process starts again. What her team did was look at how these bacteria produced their light. When they were in a dilute solution with very few bacteria, then they did not produce light. But when there were many bacteria, they did produce light. The reason this happened is because the bacteria produce these chemical messengers called Quorums, which help the bacteria know how much of them there