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Introduction to Marine Otters
Introduction to Marine Otters
Introduction to Marine Otters
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Home page carnivora - means "flesh-eating (animals)" Carni = flesh Vore = devour/to eat Common name-Mustelids Mustelids characteristics Mustelidae is the largest family within Carnivora and consists of 56 species Most Mustelids have a very good sense of smell Most Mustelids are carnivorous, but some species will eat plant material. Mustelids most impact their ecosystems through their effects on prey populations. Many different mustelid species keep rodent and bird populations from getting too big. The earliest mustelid fossil that was found in the Oligocene(33.5-23.8 mya). Marine Otter Conservation Status Marine otters are endangered because they are hunted for their pelts. Location South America Length 20 - 31 inches Tail Length 12 - 14 inches Weight 6.6 - 11 lbs Life Expectancy 10-12 Yrs Main Characteristics Marine Otters live out near the coast. They spend most of their time laying on their backs in the water eating fish and other shellfish. They have thick fur coats that keep them warm in the cold pacific waters. Habitat …show more content…
Marine Otters are usually found in rocky marine habitats where there is a high amount of kelp canopy. These rocky marine habitats usually consist of water depths that are about 20 m. A kelp canopy is an important habitat component for the Marine Otter because it is used for resting and foraging. Sometimes sea otters are found further offshore in water depths of between 40 and 60 meters. These deeper areas usually have an abundance of food, which is why the otters will go out of their way to get their. The main predators of Marine Otters are sharks and killer
Orca whales are the largest members of the dolphin family. Orcas are very curious creatures, they like to sky hop, which is when they poke their heads out of the water and look around, and they can also dive to as much as a hundred feet. These social animals live in pods and stay with them for their whole lives. They are so family oriented that they can may sleep together in a tight circle and have synchronized breathing. Orcas can grow up to thirty-two feet and can weigh nine tons. They typically eat five percent of their body weight and are amazing hunters. The lifespan of an orca in their natural habitat is about fifty years. This lifestyle for them is wonderful because they can swim as far as they want to and are free. Orcas should not be held captive because the capture process is dangerous, it is not good for their health, and their trainers are at risk. Free Willy. Dir Simon Wincer. 1993.Video. Warner Bros Home Video
For example the canopies of kelp provide shelter for many organisms . Because the kelp is able to float, it creates a canopy. This canopy has warm temperatures and slow water currents, providing a home to defenseless young. This is important because the kelp is able to protect many organisms from predators and rough storms (6). Kelp is also the base of the food chain. Since kelp is the base of the food chain many organisms eat kelp and other animals eat them.This is important because without the kelp all the primary consumers would starve having no other food source (5). Finally each part of kelp is home to a different species. Because each part of kelp is home to a different species, many species breed in them. This is important because if the kelp where gone there would be no place for the organisms to breed downsizing their population (4). Overall kelp is providing food and shelter to many
Owen-Wilson suggests that wile megaherbivores are not particularly prone to disturbance by predators or the weather, their populations tend to grow up until the point of nutritional deficiency which curiously leads to other vegetation components being trampled or broken by the trampling of megaherbivores (Owen-Smith 355). Sometimes, such damage can actually lead to the creation of different landscapes that provide a "higher biomass of accessible forage" (Owen-Smith 355). However, not all land lends to this kind of lucky damage and megaherbivores can also severely decrease the biomass of accessible forage. In fact, whether or not the megaherbivore will help or hinder is largely dependent on the water resources in the trampled areas (Owen-Smith 356).
Manatees, commonly called Sea Cow, are large aquatic mammals that are found in warm coastal areas, rivers and warm water springs in the Amazon Basin, West Africa, the Gulf of Mexico, the Caribbean Sea and the Southeastern United States. Manatees can be found in salt water, fresh water and brackish water. They spend most of their time eating aquatic plants, resting, migrating and nurturing their young. The manatee species has evolved over the last 45 million years. The adult manatee evolved into an average of approximately 10 feet long and weighs between 800 and 1,200 pounds (Site This).
The Web. 28 July 2011. http://redpath-museum.mcgill.ca/Qbp/3.Conservation/impacts.htm>. Interaction with kelp & sea otters. asnailsodyssey.com.
Save the World: Save the sea otters During the 18th and 19th centuries, sea otters were hunted for their luxurious pelts, and by the early 1900s, the species was believed to be extinct in California. (Carswell) Why do we care you ask, well not only are they super cute and eat with their hands. Apparently, a healthy population of sea otters keeps the sea urchin population in check. An unhealthy or small population of sea otters allows the sea urchin’s number to explode thus decimating kelp beds, which is the sea urchin’s food source, and causing a “chain reaction that depletes the food supply for other marine animals consequently causing their decline.
According to fossweb.org, the population of kelp holdfasts in Monterey Bay, California has increased from 470-640, throughout 1960-2010. During the exact time period, there was an increase of 525-2050 otters. During 1960-2010 the sea otter and kelp population increased, meanwhile the urchin species started to decrease from 6200-4000. Urchins feed on kelp as a food source, to obtain energy, and feed their hunger. Kelp uses sunlight to grow as producers, but without predators like otters present to eat the urchins, who destroy aquatic plants, several of them will be eaten.
There are many different species of organisms in the world. Some species, such as dominant species, are one example of having a large impact. They are species that are the most abundant in an area or have the most biomass, however, there are no definite reasons as to why they become the dominating species. Some debate that these species excel at competing for resources while others argue that they excel in avoiding predation. Yet, there are other species who provide a very large impact on its environment, often creating opportunities for other species to flourish; they are called keystone species and will be the main topic being discussed.
Humans are destructive. Not a lot of us think about how what we do affects the world around us. We almost act like we are the only ones on this planet. We go around polluting and destroying our world with no regard for our actions. The things that live out in the wild are paying the price for it. Every day that passes there is another animal or plant that is placed on an endangered list. This is happening at an alarming rate. Because of man’s desire to expand and conquer their surroundings, there are animals and plants that are on the brink of extinction that will not be around for our kids and future generations to enjoy if something is not done about it now. This problem has been going on for hundreds of years. There are animals and plants that can only been seen in paintings or early photography. It is because of our early ancestors that we have this problem today and we have to do more to prevent more animals and plants from disappearing forever.
...ws and acts such as the Marine Mammal Protection Act, the Endangered Species Act, Fur Seal Act, Fish and Wildlife Coordination Act, and the Coastal Management Act, have all helped to prevent the stocks of these important organisms from declining even further. Even though these have been enacted, the general public still needs to be educated and made aware of the population trends of these animals, as well as their importance to the tropic systems surrounding our coastlines. Many individuals do not realize, for instance, that Sea Otters are a keystone species in kelp bed habitats, and without them, kelp forests would dwindle in numbers and the health of those ecosystems would decline rapidly. Kelp forests provide habitat for over a thousand species of animals, many of which are important for fisheries and without those forests, fish abundance would fall as well.
If you have ever seen a Red Panda at the zoo, then you know they are cute animals but, did you know that they are also endangered? Red Pandas are endangered badly. Red pandas are endangered because of accidental trapping and illegal trading. That has caused the population of red pandas to decrease to around 10,000 pandas in all! Red Pandas live in the mountains of Nepal and northern Myanmar and in Central China. Did you know Red Pandas also have been endangered for the last 50 years.
Endangered species, because of the species ' own cause or the extinction of wild species subjected to human activities or natural disasters in the near future, the probability of a high species extinction key species may disrupt the local food chain, cause damage to ecosystems, and may eventually lead to the collapse of the entire ecosystem.
is a big impact on all ecosystems in the world. A very well known way is natural climate
Did you know in the world there are more than 90 species of whales, dolphins, and porpoises? (WDC) The dolphin is a very important animal to the ocean and there are many different types to discover. In order to learn about dolphins, it is important to discuss where they live, their appearance, and what they eat. Some helpful words to understand are “dorsal fin”, a dorsal fin is the top pointed fin on the dolphins back, “flippers”, a flipper is a flat fin that dolphins use to swim, and “echolocation” is a tool dolphins use to find food by sounds bouncing off of objects (dictionary.com).
In the world today there are about five thousand endangered species. Around one specie dies out every year. Some animals become endangered because people are killing them for their horns, as in the case of the Black Rhino of Africa. Others become extinct because pesticides are put on the food we eat, causing the animals that eat the insects off the plant to become contaminated, which causes their predators to become contaminated, which often affects the shell of that organism?s egg. Here is a list of the endangered species, 91 endangered birds, 76 endangered mammals, 36 endangered reptiles, 21 endangered amphibians, 115 endangered fish, 70 endangered clams, 35 endangered snails, 44 endangered insects, 12 endangered arachnids, 21 endangered crustaceans, 594 endangered flowering plants.