Otter

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    River Otter Family

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    river otter is part of the family Mustelidae, which is the weasel family. They have an elongated body that is widest at the hips with short and stocky legs. Another characteristic of this family is having a muscular neck that is in thickness equal to or greater than that of its head. River otters have a tail that is approximately one-third of their total body length with the end being tapered. They have a small flat head that with small anterior eyes, broad muzzle, long thick whiskers, and small round ears that blend in with the pelage. River otter fur is short and very dense for waterproofing. The standard shade is a light brown to black color with a high sheen, with the fur of older individuals becoming white-tipped. There is a slight sexual dimorphism where the males are approximately five percent larger than females of the same age. They range is size from 11-31 pounds with the average male weighing approximately 25 pounds and the females weighing…

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    Otter Research Paper

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    Interesting facts about the otter They at times hold hands while walking just like humans do, and just like humans, they also employ the use of tools to make their life easier. The otter is a small mammal that is interesting. It is from the same family as the honey badger, minks and polecats as well as wolverines and martens; the family Mustelidae also known as the weasel family. There are 13 species of the otter that are in existence today and these are the Lutrogale perspicillata, Hydrictis…

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    Sea Otter Research Paper

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    Introduction: The pacific sea otter, known as the heaviest members of the Weasel family, is a keystone species living in the Pacific Ocean, off the coast of Japan, Russia, America, Canada and Mexico. It’s current population, is estimated to be just over 106,000 worldwide, with just over 3,000 in California. These aquatic mammals are currently under threat of extinction. Through scientific knowledge and understanding of the sea otter, protection laws have been put into place to create for design…

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    Sea Otters Research Paper

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    Sea Otters are a very well known example of a keystone predator and often utilized by textbooks to illustrate the concept. Sea Otters “Enhydra Lutris” are involved in maintaining the population of macrobenthic grazers such as sea urchins “Strongylocentrotus polyacanthus” and mussels. Sea urchins and mussels are the dominant species in these shallow water benthic ecosystems. Left unchecked, the sea urchins overgraze the benthic vegetation and the kelp forests. Kelp forests provide habitat for…

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    Sea Otters Pros And Cons

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    Huffington Post’s article authoritatively described the definition of a trophic cascade as an ecological phenomenon triggered by the addition, or removal of top predators and involving reciprocal changes in the relative populations of predator and prey through a food chain, which often results in dramatic changes in ecosystem structure and nutrient cycling (huffingtonpost.com).” For that reason, in today’s society we have witnessed numerous trophic cascades that occur all over the world,…

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    The text and the lecture are about reasons that caused sea otters declination. The text provide two reasons ro suppot the pollution theory of otters declining. However, the lecturer refutes this theoty and states that three reason is predator, ocra. First, the text says thata lot of sourses of chemical pollution are allonf the Alaskan coast. Thus the chemical pollution could cause immune system of sea otters and as a result to decline populatiion. However, the lecture says thatit it have not…

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    Both reading passage and lecture are about reasons that made the sea otter to be declined. According to the reading passage, the author claims that environmental pollution and predation are the reasons of this declining. However, the professor doubts that by stating that the reason is the predation only. First, the passage states that according to the pollution sources that found along the Alaskan coast and the level of chemicals that increased, the sea otter population has declined. In…

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    Sea Otters Research Paper

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    Sea Otters Enhydra Lutris, also known as sea otters are the heaviest members of the weasel family and the second smallest marine mammals (Basic Facts About Sea Otters). Sea otters make up four different types of species: Enhydra (sea otter), Pteronua (giant otters), Aonyx (clawless otters), and Lutra (river otters) (Seaworld). Sea otters are not found just anywhere in the world. Most sea otters are found in coastal areas and islands of eastern and western North Pacific Ocean such as California,…

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    This organism can be found along the shores of the Chesapeake Bay and throughout lakes, streams, and almost anywhere. The organism is most commonly known as the common otter, North American river otter or scientifically known as Lontra Canadensis. The Northern river otter has a dark brown fur wither lighter brown along the face and belly. They have thick fur to help them keep warm while swimming in cold waters to catch fish. Their webbed feet allows them to swim faster in the water and they also…

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    Why Do Sea Otters Exist

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    There are many scenarios that could occur if sea otters disappeared in the ecosystems where they currently exist. Sea otters are considered a keystone species in these ecosystems, so the entire eco-system could be altered drastically and one can expect multiple species to be negatively affected which may diminish diversity. To start with, the most likely immediate effect would be the top down impact discussed above. Free from predators, the sea urchin population would explode (assuming that a…

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