Active Research - Why are the killer whales eating sea otters now. … A sea otter rests on its back with its head, arms and flippers in the air, and looks like two lumps close together. Missing Otters – Case Study Objectives Interpreting data from graphs and tables Practicing developing testable hypotheses Understanding indirect effects in biological communities Learning about sea otter, killer whale, and kelp forest ecology Subjects. Genetic analysis indicates the sea otter and its closest extant relatives, which include the African speckle-throated otter, European otter, African clawless otter and oriental small-clawed otter, shared an ancestor approximately 5 million years ago. In fact, by the 1920s, the sea otter was at the brink of extinction — it was even thought to be extinct for a time. sea otter (Enhydra lutris) are also often included in the marine mammals, which constitute additional diversity and two additional invasions of the aquatic habitat within the order Carnivora in addition to the Pinnipedia (Berta et al., 2006). Use the second law of thermodynamics (see Chapter Using a progressive disclosure format, this case study teaches students how to apply ecological principles to a real-life ecological problem, namely, the decline in sea otter populations in Alaska. Section 5-1 – How Do Species Interact? History: On the coast of California during the 1700-1800s, the sea otter was hunted for its sleek and beautiful fur. Sea otter. Detailed solutions are available in the Student Solutions ... Biochemistry. Using a progressive disclosure format, this case study teaches students how to apply ecological principles to a real-life ecological problem, namely, the decline in sea otter populations in Alaska. What are three things we could do to help prevent the extinction of this species? They are members of the Mustelid family which includes badgers, polecats, martens, weasels, stoats and minks, and have inhabited the earth for the last 30 million years and over the years have undergone subtle changes to the carnivore bodies to exploit the rich aquatic environment. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Support our work. Sea Otter Case Study Answers of them are equally great. It is considered to be the most important process in public relations.. Three elements are common … What could cause such a sharp drop in the sea otter population in the Aleutian Island chain in Alaska? Answers to all problems are at the end of this book. Find answers to questions asked by student like you. Accounting. On some islands the sea otter populations declined by 90 percent in fewer than 10 years (see Figures 1 and 2)! Clam Lagoon, the entrance from the open sea is too narrow and shallow for killer whales to get in. �{cܐ � [Content_Types].xml �(� �TKO�@������v��1��A�$b�)�v�Y^��قICQ�Ҥ�~��vgz����xT�䬛uXF�B�i�^Ǐ�-K0S����� �����&�6��Y�s�3�3��P��^�@�~ʝ�b Case Study: Search for the Missing Sea Otters: An Ecological Detective Story PART 1 Adapted from: Mary E. Allen and Mark L Kuhlmann National Center for Case Study Education Modifications by Dr. Dechaine and Dr. Scoville Introduction and Question Sea otters are the smallest marine mammal and an important species in coastal marine ecosystems. The interaction between sea otters, sea urchins and kelp forests has been studied as a model of the impact of predator-prey interaction on community ecology. Finance. In the same year, a leading national daily 9 stated that approximately US $ 40,000 was spent on the rehabilitation of every sea otter affected by the Alaska oil spill. What difference would it make if the southern sea otter (Core Case Study) became prematurely extinct because of human activities? The sharp drop in sea otters may be due to them being eliminated. Detailed solutions are available in the Student Solutions ... Biochemistry. The sea otter should not be allowed to spread into Southern California coastal waters because it will reduce the value of fisheries. Estes and Duggins (1995) found that rebounding populations of sea otters in Alaska were indirectly affecting the recovery of marine kelp forests. Use the second law of thermodynamics (see Chapter 3. It does not say they continued to track offspring. Economics. 2. The scientists came up with a hypothesis. Population Ecology Case Study: the Sea Otter by: Mattie Collins There are about 106,000 sea otters in Sea Otter Case Study Answers of them are equally great. Explain how the role of the southern sea otter in its ecosystem (Core Case Study) illustrates the population control principle of sustainability. Over 100,000 Portuguese translations of English words and phrases. What difference would it make if the southern sea otter (Core Case Study) became extinct primarily because of human activities? Sea Otter Case Study Answers, thesis title proposal tagalog, how do you communicate essay, cdc dissertation grant offer an opportunity for scientists to study the long-term effects as the sea otter … ... Want to see this answer and more? Donate now. Therefore, the correct answer is coastal otters. ... Plant growth in a salt marsh: a case study of the scientific method. A mystery disease is stranding sea otters in Alaska’s Kachemak Bay region. Sea Otter Case Study Answers, thesis title proposal tagalog, how do you communicate essay, cdc dissertation grant The decline in the sizes of sea otter populations inhabiting the Aleutian Islands, which was observed by Dr. Estes and his group, was indeed large. Part 2 - Case Studies. interactions with the kelp forests and the sea urchins have not really had any consequences that need to be currently studied. Over 100,000 Italian translations of English words and phrases. Beaches & dunes. If they did it could give them a better understanding of. Make at least one suggestion for strengthening this study design. A study conducted by Johnson et al. Places that are overrun with urchins are known as “urchin barrens”. Sure, you might decide it’s a good idea to spend as little money as possible. Describe the following types of interactions between species. A Otters are semiaquatic (or in the case of the sea otter, aquatic) mammals. Sea urchins are herbivores and feed on seaweeds like kelp. Open waters. PK ! Engineering. Management. The reason for this is that male and female coastal otters have range of a few kilometers of coastline. Estes and his colleagues estimated the impact of killer whales on sea otter populations by comparing trends in population size and survival rates of individually marked otters between two adjacent locations on Adak Island-Clam Lagoon and Kuluk Bay. Do killer whales cause decline in sea otter populations? Figure A in next page shows the food web (i.e., a summary of the feeding relationships in a community) in kelp forests when sea otters are abundant. Sea otter is a keystone species. 2. About us. Sea Otters Use Tools, and Archaeologists Are On the Case. Tune into our LIVE Sea Otter Cam for your daily dose of sea otter cuteness. If it were to extinct, other species who rely on it would as well be harmed. 2. If it were to extinct, other species who rely on it would as well be harmed. Arctic Tundra . Answers to all problems are at the end of this book. (2 pts.) Crisis management is the process by which an organization deals with a disruptive and unexpected event that threatens to harm the organization or its stakeholders. (2009), examined how two diseases affect the population growth of sea otters. 1. Between 1741 and 1911, a period of extensive hunting for sea otter pelts, known as "the Great Hunt", … What difference would it make if the southern sea otter (Core Case Study) became extinct primarily because of human activities? Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes! History: On the coast of California during the 1700-1800s, the sea otter was hunted for its sleek and beautiful fur. Based on Figures 2 and 3 above, what can you conclude about the effects of killer whales on sea, The otters in the area where the killer whales can get into decreased more than the area that had a narrow. We need your support to continue animal care and maintenance of the Aquarium. Critical Thinking 1. * how well they are reproducing and effectively replacing the population. Case Study: Search for the Missing Sea Otters: An Ecological Detective Story PART 1 Adapted from: Mary E. Allen and Mark L Kuhlmann National Center for Case Study Education Modifications by Dr. Dechaine and Dr. Scoville Introduction and Question Sea otters are the smallest marine mammal and an important species in coastal marine ecosystems. Sea otters have become more centrally located in their environments. 10. Wallpapers. Explain how the role of the southern sea otter in its ecosystem (Core Case Study) illustrates the population control principle of sustainability. ... What difference would it make if the southern sea otter (Core Case Study) became extinct primarily b... A: Southern sea otters occur in the giant kelp forests in shallow waters along the Pacific coast of Nor... question_answer. This preview shows page 1 - 2 out of 3 pages. The facial structure and skull shape are different between the two, Gagne says. In. Tips for spotting a sea otter. However, starting in the early 1990s, Estes and his colleagues noted that otter population numbers were dropping precipitously. View Sea Otter case study answer sheet.docx from ECON 101 at Orange County Public Schools West Orange High School. 1. Show more Q&A. How does the story of the sea otter illustrate an example of a TROPHIC CASCADE? The researchers in the case study had ruled out reproductive problems and migration, so one of the only other options would be elimination. Portuguese Translation of “otter” | The official Collins English-Portuguese Dictionary online. 2. ... That’s why archaeologists may be turning to ancient sea otter skeletons to study the evolution of tool use in the sea. The southern sea otter is smaller than its similar counterpart, the northern sea otter. UCSD Researchers Get Grant To Study Psychedelics On Phantom Pain The grant, worth $1.3 million, will fund a clinical trial investigating a treatment for phantom limb pain. Changes in relative abundance of sea otters … This article outlines a study that suggests that thriving sea otter populations keep sea urchins in check, which in turn allow kelp forests to prosper. What difference would it make if the southern sea otter ( Core Case Study ) became extinct primarily because of human activities? Students interpret data from graphs and tables and practice developing testable hypotheses as they work in groups to solve the mystery of the “missing” sea otters. A Snail’s Odyssey, Tom Carefoot. Sea otters can sometimes be seen off sandy beaches — and even local harbors. What’s Killing Alaska’s Sea Otters? However, it is coastal otters that have the shortest range. While scuba diving in the Aleutian Islands, Dr. Estes noticed places where the seafloor was covered with sea urchins and no kelp remained. Start studying Environmental Science Final Study Guide Semester 2. Students interpret data from graphs and tables and practice developing testable hypotheses as they work in groups to solve the mystery of the “missing” sea otters. We would like to show you a description here but the site won’t allow us. Fishermen also hunted these creatures because they believed that the otters were eating too many of the fish they wanted to catch. The sea otter should not be allowed to spread into Southern California coastal waters because it will reduce the value of fisheries. Case Study: Search for the Missing Sea Otters: An Ecological Detective Story PART 2 Do killer whales cause decline in sea otter populations? Sure, you might decide it’s a good … 3. Keep in mind that while a good writing service should be affordable to you, it definitely shouldn’t be the cheapest Sea Otter Case Study Answers you can find. Products. ... Want to see this answer and more? Read the sea otter case study and answer the questions at the end. 2. Leadership. All the evidence collected by Estes and his coworkers points to killer whales as the cause of the decline in sea otters: the increase in observed killer whale attacks on sea otters, the differences in sea otter survival and population trends at the two locations on Adak Island (Figures 2 and 3), and energetics data demonstrating that killer whales could have eaten enough otters for these … Sea otters offer a unique case for the study and application of conservation genetics because of their documented history of population reduction and recovery from the fur trade of the eighteenth and nineteenth centuries. The sea otter once ranged from Baja California to the Pacific Northwest to Russia and Japan. Using a progressive disclosure format, this case study teaches students how to apply ecological principles to a real-life ecological problem, namely, the decline in sea otter populations in Alaska. The study of crisis management originated with large-scale industrial and environmental disasters in the 1980s. Live cams. Estes and his colleagues estimated the impact of killer whales on sea otter populations by comparing trends in, population size and survival rates of individually marked otters between two adjacent locations on Adak Island-, Clam Lagoon and Kuluk Bay. Describe how sea otters are a keystone species in their ecosystem. Animal stories. A Otters are semiaquatic (or in the case of the sea otter, aquatic) mammals. Figure A in next page shows the food web (i.e., a summary of the feeding relationships in a community) in kelp forests when sea … Sea otters are keystone predators, whose presence has a far-reaching influence on the marine food web by affecting the population of sea … 2. And in one study, it was found that male river otters have a range of 12 and 80 km. Jul 20, 2015 | 2,600 words, about 13 minutes. The reason for this is that male and female coastal otters have range of a few kilometers of coastline. And in one study, it was found that male river otters have a range of 12 and 80 km. But before forging ahead, members of the alliance hope to find an answer to a conservation mystery: what caused 93 sea otters introduced to Oregon in the 1970s to disappear? What difference would it make if the southern sea otter (Core Case Study) became extinct primarily because of human activities? Numbers of sea otters in California have gone up in recent years but the range of sea otters has decreased. 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