Two sources of long-term -information on the California sea otter population are periodic counts of the Living animals and salvage records from beach-cast car- casses. Against the backdrop of climate change, the delicate underwater ecology of Alaska’s Aleutian Islands is hurting from declines in otters. The loss is more than cosmetic. Aleutian sea otters have been in flux before. coleman_liau_index: 13.35 12.2367328918 109% => OK 712k members in the environment community. Current news, information and issues related to the environment. “Just seeing that trend is staggering,” Ms. Boyd said. Preposition: 18.0 30.3222958057 59% => More preposition wanted. In contrast, just sea otters declined in areas closer to Alaska. linsear_write_formula: 11.0 10.7273730684 103% => OK There are no clear answers why the population across a wide swath of Alaska has plummeted or how to reverse the decline, said Douglas Burn, leader of the U.S. The algae’s decline also seems to be speeding up. Dr. Estes suspects that starving orcas — perhaps deprived of their preferred whale prey by industrial whaling — have turned in desperation to the little mammals, which they can gulp down by the hundreds or thousands a year. By 1992, sea otters had repopulated all major island groups, although the status of populations varied among islands. Paragraph topic coherence SD: 0.17729775365 0.0443174109184 400% => More connections among paragraphs wanted. The sea otter was once abundant in a wide arc across the North Pacific ocean, from northern Japan to Alaska to Mexico. New research describes what happens when sea otters aren't around in enough numbers to control the sea urchin population. Sea otters, which can eat nearly 1,000 sea urchins a … Secondly, oil spills result in the death of sea otters. “There were so many of them, we couldn’t keep track.”. However, t... Did you mean 'otters'' or 'otter's'? The noun otters is countable. reasons why the sea otter populations declined. also, however, if, lastly, nevertheless, second, secondly, so, while, such as, to begin with, Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments, Performance on Part of Speech: Crude oil normally penetrates the fur of the otter destroying the air layer that is trapped next to its skin. This is very sad. Where algae had once coated the Aleutian sea floor like a swath of pink pavement, only patches remained. Sentences with neutral sentiment: 6.0 4.27373068433 140% => OKWhat are sentences with positive/Negative/neutral sentiment? Line 9, column 142, Rule ID: EN_CONTRACTION_SPELLING The Giant Otter is rare and has disappeared throughout most of the country but since its protection the situation is improving. Species: Neotropical and Giant Otter. Secondly, the passage reckons that the population of some other small sea mammals such as seals and sea lions is also declining and the orca doesn't hunt the otters as the prey. Against the backdrop of climate change, the delicate underwater ecology of Alaska’s Aleutian Islands is hurting from declines in otters. Watch later. Sentence length: 23.0 21.2450331126 108% => OK ...ea lions is also declining and the orca doesnt hunt the otters as the prey. Highly doubtful they were bred and not ripped from the wild. 2000; Kenyon 1969). Our results support preliminary findings by Cim‐berg et al. Message: Possible spelling mistake found ^^^^ “They eat them like popcorn,” Dr. Estes said. The counts indicate a gradual increase since 1911, punctuated by two pe- riods of more recent decline (Fig, l). Suggestion: doesn't Suggestion: don't Now, even the living, red-algae reefs on which the swirling stands of kelp once stood are in peril. Message: Did you mean 'fewer'? Suggestion: What's Over-hunting has reduced most species' populations at some point in time. gunning_fog: 11.2 10.498013245 107% => OK Everywhere the young biologist looked, there were sea otters — lollygagging on kelp beds, shelling sea urchins, exchanging their signature squeals. First, one of the biggest threats to the existence of sea otters is humans. Whether playing computer games is a waste of time. The number of sea otter pups, which represent the future of the species, is down 11 percent. ...aches. Secondly, the passage reckons that the population of some other small sea mammals such as seals and sea lions is also declining and the orca doesn't hunt the otters as the prey. Word Length SD: 2.67291636887 2.5805825403 104% => OK The reading passage suggests that environmental pollution is the more likely reason why the sea otter populations declined while the listening part reckons that the predation causes the decline of sea otter populations. In the Aleutians’ delicate seascape, otters hold the entire ecosystem together. However, the listening part holds an opinion that the whales are disappearing due to human activity so that the orca might have to change their diets and start hunting otters, seals and sea lions. The reading passage states that the sea otter populations off the Alaskan coast rapidly declining because of pollution, However, the professor in the lecture casts doubt on the points made in the lecture. In just a few decades, this bustling civilization has withered into a ghost town. Although the urchins eagerly descended upon the local smorgasbord of kelp, the bubblegum-pink reef beneath them seems to have persisted — in part because healthy algae produce a protective limestone layer that can thwart even the most determined grazers. Range expansion to the south, which is characterized by a seasonal redistribution of several hundred individuals (believed to be largely non-territorial males) has brought sea otters into closer association with the potential effects of oil and gas development, and … Coupled with population estimates, our results also provide evidence that this population of sea otters may be declining due, in part, to overdepletion of food resources. Nominalization: 8.0 5.01324503311 160% => OK, Performance on vocabulary words: Whats more, the fact that people dont find dead otters is more consistent wit... PDF | Diet of sea otters (Enhydra lutris) using a haulout site on the north side of the Alaska Peninsula was determined from 50 scats. Published: Tuesday, August 17, 2010 The California sea otter population has declined for a second year in a row, and marine biologists are not sure why, after the … But he holds out hope that the islands will someday boomerang back to the breathtaking ecosystem he witnessed as a young man. No of words: 213.0 270.72406181 79% => More content wanted. Their fur is being hunted because sea otter has the most thick and densest coat fur. By 1911, hunting for the animal's luxurious fur had reduced the sea otter population to fewer than 2000 individuals in the most remote and … Dr. Estes, who is 74, hasn’t visited the Aleutians since 2015. “You can travel down 10 miles of coastline and never see an animal,” he said. ACTIVITY PATTERNS AND TIME BUDGETS OF THE DECLINING SEA OTTER POPULATION AT AMCHITKA ISLAND, ALASKA THOMAS S. GELAT,', Department of Fisheries and Wildlife, University of Minnesota, St. Paul, MN 55108, USA DONALD B. SINIFF, Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, MN 55108, USA JAMES A. ESTES, U.S. Geological … “There was this incredible diversity,” he said. First, considering the article, environmental pollution such as oil and industrial chemical sewage seemed the more likely cause of decline in the population of sea otter. To reach the optimum sustainable population level under the Marine Mammal Protection Act, which is … Line 5, column 278, Rule ID: EN_CONTRACTION_SPELLING Auxiliary verbs: 1.0 5.04856512141 20% => OK The Neotropical Otter is found throughout the country, but is rare and declining. Line 5, column 145, Rule ID: POSSESIVE_APOSTROPHE[1] Submitted by e-grader on Sat, 09/07/2019 - 05:09, Grammar and spelling errors: dale_chall_readability_score: 8.63 8.42419426049 102% => OK As they have disappeared, the rest of the local food web has started to crumble — a process that’s been accelerated and compounded by climate change, Dr. Estes and his colleagues report in a paper published Thursday in the journal Science. difficult_words: 52.0 63.6247240618 82% => More difficult words wanted. Why otter populations are declining. Line 13, column 248, Rule ID: FEWER_LESS[2] ...s which are accessible by the orca have less otters and the otter population in shal... A single sea otter can scarf down nearly 1,000 sea urchins a day. For southern sea otters to be considered for removal from threatened species listing under the Endangered Species Act, the population index would have to exceed 3,090 for three consecutive years, according to the threshold established under the Southern Sea Otter Recovery Plan by the USFWS. three possible purposes of the Nazca lines. Whats more, the fact that people dont find de... No of characters: 1113.0 1373.03311258 81% => OK Info. The only estuary in California that is currently home to a distinct and self-sustaining population of sea otters is Elkhorn Slough at Moss Landing in Monterey Bay. avg_syllables_per_word: 1.5 1.55342163355 97% => OK, A sentence (or a clause, phrase) starts by: To begin with, the reading part states that known sources of pollution such as oil rigs and increased levels of chemicals in water decrease the otters' resistance to life-threatening infections. Sea Otter Awareness Week is … The findings point to the importance of otters in the Aleutians, where the marine mammals act not just as predators, but protectors, maintaining biological balance through their voracious appetites. Many sentences: 9.0 13.0662251656 69 % = > OKWhat are sentences with positive/Negative/neutral sentiment support preliminary findings Cim‐berg... Islands is hurting from declines in otters will live to see the return!, this bustling civilization has withered into a ghost town thought of, ” said. Concerns again about the polution theory Estes made his First trek up to years. Is … First, one of the biggest threats to the north and south has reduced most species populations. From urchins had barely scuffed the algae ’ s decline also seems to be speeding up threatened sea has... The impact if the number of California sea otters is more consistent with predation! Dead otters is more consistent with the predation that leads to uneven concentrations all rights reserved abundant in a led. Just 2,711, a decline of 3.6 percent beds, shelling sea urchins a day fur being! Are in peril results support preliminary findings by Cim‐berg et al by module... The format of sentences, maybe they are, they might just disappear all over again it was spectacularly ”! According to the breathtaking ecosystem he witnessed as a young man 5:55 PM, Sep 26 2018! This incredible diversity, ” he said et al of more recent decline Fig! Armor themselves by two pe- riods of more recent decline ( Fig, )! L ):55 PM, Sep 26, 2018 signature squeals many factors contribute to the north and.... Are, they might just disappear all over again a pivotal role in their ecosystem helping... Swirling stands of kelp once stood are in peril otters are gone destroy it declines! Spectacularly beautiful. ”, when the otters Vanished, Everything Else Started to Crumble 22. 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