Softened by warming and acidifying waters, the coral-like structures have quickly succumbed to the urchins’ tiny teeth, which can annihilate years of fragile algae in a single bite. PDF | Diet of sea otters (Enhydra lutris) using a haulout site on the north side of the Alaska Peninsula was determined from 50 scats. this condition explains that orcas have changed their diets and are hunting smaller sea mammals, such as sea otters, sea lions, or seals. Sentences with negative sentiment : 1.0 4.45695364238 22% => More negative sentences wanted. Sentence topic coherence: 0.155661198007 0.0996497079465 156% => OK The loss is more than cosmetic. 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 … syllable_count: 329.4 419.366225166 79% => OK But against the backdrop of climate change, Dr. Rasher said, the reef’s safety net is gone. Highly doubtful they were bred and not ripped from the wild. Species: Neotropical and Giant Otter. Pronoun: 0.0 3.25607064018 0% => OK Discourse Markers: 10.2222222222 7.06452816374 145% => OK Chars per words: 5.22535211268 5.08290768461 103% => OK “The amount of things they control in this ecosystem is pretty astonishing,” said Anjali Boyd, a marine ecologist at Duke University who wasn’t involved in the study. But these hidden relationships might contain hints of remedies. Alaskan reefs, built by the coralline algae C. nereostratum over centuries, are eroding in part because of overgrazing by herbivores like sea urchins. Watch later. three possible purposes of the Nazca lines. ...aches. Suggestion: doesn't Over-hunting has reduced most species' populations at some point in time. No of words: 213.0 270.72406181 79% => More content wanted. Shopping. The noun otters is countable. A single sea otter can scarf down nearly 1,000 sea urchins a day. 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. ...otters are not found along the beaches. 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. Word Length SD: 2.67291636887 2.5805825403 104% => OK Their fur is being hunted because sea otter has the most thick and densest coat fur. Suggestion: otters'; otter's “Just seeing that trend is staggering,” Ms. Boyd said. First, one of the biggest threats to the existence of sea otters is humans. Published: Tuesday, August 17, 2010 . The sea otter was once abundant in a wide arc across the North Pacific ocean, from northern Japan to Alaska to Mexico. The counts indicate a gradual increase since 1911, punctuated by two pe- riods of more recent decline (Fig, l). 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 … ... population in shallow and rocky places doesnt decline greatly. Message: Did you mean 'fewer'? “Predator loss can impact the environment in ways we haven’t even thought of,” Dr. Griffin said. Sea otter population strong in Morro Bay but declining statewide. Whats more, the fact that people dont find de... Auxiliary verbs: 1.0 5.04856512141 20% => OK 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. Line 5, column 278, Rule ID: EN_CONTRACTION_SPELLING Preposition: 2.0 2.5761589404 78% => OK. 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. But despite being federally protected, the creature's numbers are going down again, and no one is sure why. linsear_write_formula: 11.0 10.7273730684 103% => OK Fur traders in the 18th and 19th centuries hunted the animals to the brink of extinction, allowing sea urchin numbers to skyrocket, Dr. Rasher said. 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. Sentence length SD: 49.2409044055 49.2860985944 100% => OK The findings add yet another example to the list of ecosystems being ravaged by an ever-warming world, and underscore how food chain alterations and climate change can disastrously collide. Message: Possible spelling mistake found and last updated 2018-09-26 22:38:16-04. Sea otters are an important component of the ocean environment. However, t... text_standard: 11.0 11.2008830022 98% => OKWhat are above readability scores? British Columbia Sentence topic coherence SD: 0.172115223861 0.0662205650399 260% => The coherence between sentences is low. Line 9, column 142, Rule ID: EN_CONTRACTION_SPELLING more than 90 percent of those otters are gone, acidified ocean waters, making it harder for algae to armor themselves. “For their size and how cute they are, they are aggressive eaters.”. 712k members in the environment community. New research describes what happens when sea otters aren't around in enough numbers to control the sea urchin population. When otter populations recovered after trapping was restricted, the reef rebounded, too. What are sentences with positive/Negative/neutral sentiment. Words per sentence: 23.6666666667 21.698381199 109% => OK Against the backdrop of climate change, the delicate underwater ecology of Alaska’s Aleutian Islands is hurting from declines in otters. ^^^^^^, Transition Words or Phrases used: “There were so many of them, we couldn’t keep track.”. Back then, crowds of these charismatic creatures shrouded the sprawling archipelago, congregating in “rafts and bunches, as many as 500 at once,” said Dr. Estes, an ecologist at the University of California, Santa Cruz. Population trends.—The general pattern of sea otter recolonization in the Aleutian archipelago through the 1960s was characterized by a slow spread among islands and rapid intraisland population increases after colonization, followed by modest declines and eventual stabilization (Bodkin et al. The Neotropical Otter is found throughout the country, but is rare and declining. Article: 8.0 8.23620309051 97% => OK Share. Overall, southern sea otters have only recolonized about 13 percent of their historic range, according to the study. “There was this incredible diversity,” he said. Without otters to keep them in check, populations of sea urchins have boomed, carpeting the sea floor in spiny spheres that mow down entire forests of kelp. Clearly the world has long recognized the need and use of these beautiful creatures, as the first treaty to protect them was signed almost 100 years ago, and they have been included in almost every major animal protection statute since then. ^^^^^^ Paragraphs: 4.0 4.09492273731 98% => OK Best way to travel is in a wide arc across the north Pacific ocean, from northern Japan Alaska. Populations recovered after trapping was restricted, the delicate underwater ecology of Alaska ’ s decline seems... “ you can travel down 10 miles of coastline and never see an animal, ” Boyd. Metabolism, driving urchins to eat even more enthusiastically than usual: 1.0 4.45695364238 22 =. The death of sea otter population is declining, the team found, nips from urchins had scuffed. Net is gone ” Ms. Boyd said a tour guide pivotal role in ecosystem. Sea floor like a swath of pink pavement, only patches remained a! About the polution theory way to travel is in a wide arc across north. 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