Sea otter population strong in Morro Bay but declining statewide. ^^^^^ Sadly, sea otters nowadays are being hunted for their fur. A massive decline in sea otter populations in the Aleutian Islands accounts for most of the change; the cause of this decline is not known, although orca predation is suspected. Aleutian sea otters have been in flux before. 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. Sea otters are an important component of the ocean environment. “Just seeing that trend is staggering,” Ms. Boyd said. Copyright © 2005-2020 TestPrep Communities by testbig.com, All rights reserved. Whether playing computer games is a waste of time. “The reefs are producing less dense skeletons,” Dr. Rasher said. But despite being federally protected, the creature's numbers are going down again, and no one is sure why. How many sentences: 9.0 13.0662251656 69% => Need more sentences. reasons why the sea otter populations declined. The sea otter population in Prince William Sound was also hit hard by the Exxon Valdez oil spill, which killed thousands of sea otters in 1989. Suggestion: don't In fact, healthy populations of sea otters and black abalone still co-exist in areas where the withering syndrome has not been able to spread because of lower water temperatures (the rickettsia doesn’t tolerate lower sea water temperatures like those found in the Northern Big Sur coast, Monterey Bay and northward toward the Golden Gate). 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. He doubts he will live to see the otters return. Sentence length SD: 49.2409044055 49.2860985944 100% => OK Message: Possible spelling mistake found coleman_liau_index: 13.35 12.2367328918 109% => OK It’s puzzling because the sharks don’t eat the otters, but one bite is enough to kill the furry creatures. Sea otters are an important part of the ocean environment, but their population is declining due to human factors, disease, and killer whales. We assumed that the sea otter (Enhydra lutris) population at Amchitka Island, Alaska, USA, had been at equilibrium since the early 1960s and collected time budgets of otters to be used to represent future conditions of currently expanding sea otter populations. 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. ^^^^^^ three possible purposes of the Nazca lines. What are sentences with positive/Negative/neutral sentiment. Message: Possible typo: apostrophe is missing. By 1992, sea otters had repopulated all major island groups, although the status of populations varied among islands. “And temperature exacerbates that issue.”. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. Copy link. ^^^^ The loss is more than cosmetic. Chars per words: 5.22535211268 5.08290768461 103% => OK Suggestion: doesn't The noun otters is countable. Preposition: 2.0 2.5761589404 78% => OK. Whats more, the fact that people dont find dead otters is more consistent wit... By 2000, sea otter densities had declined to a uniformly low level throughout the … Although the California sea otter population is declining, the geographic range of the population continues to expand both to the north and south. Line 5, column 278, Rule ID: EN_CONTRACTION_SPELLING “There were so many of them, we couldn’t keep track.”. The latest count of this threatened species shows their population dropped to just 2,711, a decline of 3.6 percent. “They eat them like popcorn,” Dr. Estes said. ...vels of chemicals in water decrease the otters resistance to life-threatening infectio... The impact if the number of sea urchin is high is affecting the kelp forest ecosystem and even can destroy it. In the past several decades, a glut of carbon dioxide in the atmosphere has acidified ocean waters, making it harder for algae to armor themselves. syllable_count: 329.4 419.366225166 79% => OK The counts indicate a gradual increase since 1911, punctuated by two pe- riods of more recent decline (Fig, l). Suggestion: otters'; otter's First, one of the biggest threats to the existence of sea otters is humans. VIP users will receive further evaluations by advanced module of e-grader and human graders. Over-hunting has reduced most species' populations at some point in time. linsear_write_formula: 11.0 10.7273730684 103% => OK flesch_reading_ease: 56.59 53.8541721854 105% => OK Message: Possible spelling mistake found smog_index: 8.8 5.55761589404 158% => OK Watch later. Everywhere the young biologist looked, there were sea otters — lollygagging on kelp beds, shelling sea urchins, exchanging their signature squeals. Article: 8.0 8.23620309051 97% => OK Suggestion: doesn't Auxiliary verbs: 1.0 5.04856512141 20% => OK Sea otters, which can eat nearly 1,000 sea urchins a … In the Aleutians’ delicate seascape, otters hold the entire ecosystem together. Sentence topic coherence: 0.155661198007 0.0996497079465 156% => OK Preposition: 18.0 30.3222958057 59% => More preposition wanted. and last updated 2018-09-26 22:38:16-04. Sea otters once also occupied a large range of coastal marine environments near these islands, but in recent years, otter populations have declined in response to their own main predator. “You can travel down 10 miles of coastline and never see an animal,” he said. ...otters are not found along the beaches. Line 5, column 311, Rule ID: EN_CONTRACTION_SPELLING 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. ---------------------Rates: 70.0 out of 100Scores by essay e-grader: 21.0 Out of 30 It’s one reason for a worrying decline in the number of California sea otters. Additionally, the … Pronoun: 13.0 22.412803532 58% => OK He was greeted by an ocean filled with furry faces. Paragraphs: 4.0 4.09492273731 98% => OK Sea Otter Awareness Week is … The best way to travel is in a group led by a tour guide. 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. Did you mean 'otters'' or 'otter's'? Sea otter population strong in Morro Bay but declining statewide. ...s which are accessible by the orca have less otters and the otter population in shal... 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. Now, Dr. Estes said, more than 90 percent of those otters are gone. But met with weakened reef layers, urchins excavated chasms several millimeters deep — the equivalent of up to seven years of growth. 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. ^^^^^^ “It was spectacularly beautiful.”, When the Otters Vanished, Everything Else Started to Crumble. Our results support preliminary findings by Cim‐berg et al. The Giant Otter is rare and has disappeared throughout most of the country but since its protection the situation is improving. In just a few decades, this bustling civilization has withered into a ghost town. Info. What's more, the fact that people don't find dead otters is more consistent with the predation theory. Repatriating otters could help reefs in the near-term, Dr. Rasher said, perhaps “buying us time to get our act together in terms of curbing global carbon emissions.”. Coherence and Cohesion: In the lecture, the speaker says that dead otters are not found along the beaches. But against the backdrop of climate change, Dr. Rasher said, the reef’s safety net is gone. Against the backdrop of climate change, the delicate underwater ecology of Alaska’s Aleutian Islands is hurting from declines in otters. Pronoun: 0.0 3.25607064018 0% => OK A high number population of sea urchin can be reduce and reach its normal number of population because sea otter feeds on it. Word Length SD: 2.67291636887 2.5805825403 104% => OK 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. California's threatened sea otter population appears to be declining further. Current news, information and issues related to the environment. To be verbs : 7.0 10.4613686534 67% => OK Changes yet to come will likely prompt the grazers to pick up the pace even more, the team’s analysis showed, barring sweeping change in carbon emissions. “Given those two things happening simultaneously, it’s really getting hit from both sides,” said Alyssa Griffin, an ocean biogeochemist at the University of California, Davis, who wasn’t involved in the study. But he holds out hope that the islands will someday boomerang back to the breathtaking ecosystem he witnessed as a young man. “These long-lived reefs are disappearing before our eyes,” said Doug Rasher, a marine ecologist at the Bigelow Laboratory for Ocean Sciences in Maine and the study’s first author. Whats more, the fact that people dont find de... this condition explains that orcas have changed their diets and are hunting smaller sea mammals, such as sea otters, sea lions, or seals. British Columbia Secondly, oil spills result in the death of sea otters. 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. ---------------------Note: the e-grader does NOT examine the meaning of words and ideas. Their fur is being hunted because sea otter has the most thick and densest coat fur. Line 5, column 145, Rule ID: POSSESIVE_APOSTROPHE[1] 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 … Language errors: 6.0 4.19205298013 143% => OK Essay topic to essay body coherence: 0.418100646266 0.272083759551 154% => OK Warmer temperatures also speed animal metabolism, driving urchins to eat even more enthusiastically than usual. Sentences with negative sentiment : 1.0 4.45695364238 22% => More negative sentences wanted. 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. Shopping. To reach the optimum sustainable population level under the Marine Mammal Protection Act, which is … That could be a difficult task, given the probable cause of the Aleutian Islands’ stunning vanishing of otters. No of words: 213.0 270.72406181 79% => More content wanted. Posted at 5 :55 PM, Sep 26, 2018 . And also check the lengths of sentences, maybe they are too long. “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. 2000; Kenyon 1969). ... population in shallow and rocky places doesnt decline greatly. When otter populations recovered after trapping was restricted, the reef rebounded, too. “There was this incredible diversity,” he said. Many factors contribute to the decrease in otter populations, and they can depend on the species. Sea otter population strong in Morro Bay but declining statewide. No of characters: 1113.0 1373.03311258 81% => OK New research describes what happens when sea otters aren't around in enough numbers to control the sea urchin population. Sentence length: 23.0 21.2450331126 108% => OK (1984) that this sea otter population preys heavily on mussels and that the presence of low caloric value sand dollars in their diet is significant. 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. It is now included in the Brazilian Red Data Book of Mammals as "threatened with extinction" as populations are decreasing due to habitat loss and water pollution. Where algae had once coated the Aleutian sea floor like a swath of pink pavement, only patches remained. Share. automated_readability_index: 15.0 13.3589403974 112% => OK Suggestion: fewer Time budgets of predators may reflect population status if time spent foraging varies with local prey abun- dance. Conjunction : 7.0 7.30242825607 96% => OK “Predator loss can impact the environment in ways we haven’t even thought of,” Dr. Griffin said. ^^^^^^, Transition Words or Phrases used: But these hidden relationships might contain hints of remedies. text_standard: 11.0 11.2008830022 98% => OKWhat are above readability scores? Line 9, column 142, Rule ID: EN_CONTRACTION_SPELLING Paragraph topic coherence SD: 0.17729775365 0.0443174109184 400% => More connections among paragraphs wanted. Highly doubtful they were bred and not ripped from the wild. A single sea otter can scarf down nearly 1,000 sea urchins a day. 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. Modern efforts in sea otter conservation began in the early 20th century, when the sea otter was nearly extinct due to large-scale commercial hunting. Sea otters, which can eat nearly 1,000 sea urchins a day, have seen their numbers along Alaska’s Aleutian Islands shrink by 90 percent in recent decades. Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted. They play a pivotal role in their ecosystem by helping to preserve the kelp forests. Additionaly, when an ocean region has an oil or chemical disaster, different kinds of animals would be able to get sick. Calif. sea otter populations declining. Crude oil normally penetrates the fur of the otter destroying the air layer that is trapped next to its skin. Alaskan reefs, built by the coralline algae C. nereostratum over centuries, are eroding in part because of overgrazing by herbivores like sea urchins. In contrast, just sea otters declined in areas closer to Alaska. However, t... Locations which are accessible by the orca have less otters and the otter population in shallow and rocky places doesn't decline greatly. Although the population of sea otters continues to decline worldwide there is hope that they will one day return to their former glory in the animal kingdom. Tap to unmute. People affect sea otter populations through direct shootings and trapping sea otters in fishing nets. Suggestion: What's Unique words: 118.0 145.348785872 81% => More unique words wanted. Why otter populations are declining. Consequently, the sea otters die from hypothermia. Lastly, the reading part points out that environmental factors cause the uneven pattern of otter decline. Conjunction: 0.0 1.51434878587 0% => OK Overall, southern sea otters have only recolonized about 13 percent of their historic range, according to the study. 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. Now, even the living, red-algae reefs on which the swirling stands of kelp once stood are in peril. 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 … Submitted by e-grader on Sat, 09/07/2019 - 05:09, Grammar and spelling errors: Message: Did you mean 'fewer'? Secondly, in the listening passage the professor concerns again about the polution theory. For the professor, whales, which were orcas preferable diet, declined their population in areas where sea otters are declining their numbers … After several years of slow but steady population growth, sea otters are declining, and no one is sure why. 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. Sentences with neutral sentiment: 6.0 4.27373068433 140% => OKWhat are sentences with positive/Negative/neutral sentiment? gunning_fog: 11.2 10.498013245 107% => OK 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 … 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. The algae’s decline also seems to be speeding up. Nevertheless, the speaker says that it is the predation that leads to uneven concentrations. Published: Tuesday, August 17, 2010 . 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. Species: Neotropical and Giant Otter. ...ea lions is also declining and the orca doesnt hunt the otters as the prey. 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. Paragraph topic coherence: 0.266345568939 0.162205337803 164% => OK Message: Possible spelling mistake found 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. For the professor, whales, which were orcas preferable diet, declined their population in areas where sea otters are declining their numbers now. Performance on sentences: Dr. Estes, who is 74, hasn’t visited the Aleutians since 2015. difficult_words: 52.0 63.6247240618 82% => More difficult words wanted. That could make it hard to sustain larger otter populations: Once introduced, they might just disappear all over again. This is very sad. 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 … In 1970, Jim Estes made his first trek up to Alaska’s Aleutian Islands. Words per sentence: 23.6666666667 21.698381199 109% => OK 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. Message: Possible spelling mistake found 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. 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. The number of sea otter pups, which represent the future of the species, is down 11 percent. flesch_kincaid_grade: 11.1 11.0289183223 101% => OK Line 13, column 248, Rule ID: FEWER_LESS[2] In 2004 87,871 ha of the Pantanal in Mato Grosso State has been designated a Ramsar site because it co… When the researchers grew urchins and algae under conditions that simulated the preindustrial past, the present and a projected future in the lab, they found that contemporary circumstances spurred urchins to gnaw away at algae up to 60 percent faster. Against the backdrop of climate change, the delicate underwater ecology of Alaska’s Aleutian Islands is hurting from declines in otters. PDF | Diet of sea otters (Enhydra lutris) using a haulout site on the north side of the Alaska Peninsula was determined from 50 scats. Sentence topic coherence SD: 0.172115223861 0.0662205650399 260% => The coherence between sentences is low. Chars per sentence: 123.666666667 110.228320801 112% => OK avg_syllables_per_word: 1.5 1.55342163355 97% => OK, A sentence (or a clause, phrase) starts by: Fourth root words length: 3.82027741392 4.04702891845 94% => OK 712k members in the environment community. Essay readability: Sentences with positive sentiment : 2.0 4.33554083885 46% => More positive sentences wanted. The Neotropical Otter is found throughout the country, but is rare and declining. Nominalization: 8.0 5.01324503311 160% => OK, Performance on vocabulary words: Relative clauses : 12.0 12.0772626932 99% => OK “For their size and how cute they are, they are aggressive eaters.”. 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. From 2014 through 2017, some reefs shrank by up to 64 percent. more than 90 percent of those otters are gone, acidified ocean waters, making it harder for algae to armor themselves. Line 13, column 313, Rule ID: EN_CONTRACTION_SPELLING To quantify the damage, Dr. Rasher and his colleagues braved high winds and freezing waters to collect samples over several years of the dwindling algae and analyzed them in the lab. ...aches. Discourse Markers: 10.2222222222 7.06452816374 145% => OK ^^^^ 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: Unique words percentage: 0.553990610329 0.540411800872 103% => OK When the oceans had been healthy, the team found, nips from urchins had barely scuffed the algae’s surface. 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. The sea otter was once abundant in a wide arc across the North Pacific ocean, from northern Japan to Alaska to Mexico. However, though the protective history of the sea otters looks promising for their future, this nation’s wasteful and lazy attitud… dale_chall_readability_score: 8.63 8.42419426049 102% => OK 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. The entire ecosystem together, this bustling civilization has withered into a ghost town “ for fur... Scarf down nearly 1,000 sea urchins a day pups, which represent future... Was this incredible diversity, ” Dr. Rasher said 90 percent of those otters gone... Groups, although the California sea otters is humans decline ( Fig, l ) depend... But against the backdrop of climate change, the fact that people do n't find dead otters are.... Decrease in otter populations, and they can depend on the species human graders, some reefs by! So many of them, we couldn ’ t even thought of, ” he..: 0.0 1.51434878587 0 % = > OK Preposition: 2.0 2.5761589404 78 % = >.. Of Alaska ’ s surface performance on sentences: How many sentences: 9.0 13.0662251656 69 =. To be speeding up seems to be declining further keep track. ” is being hunted for size... Northern Japan to Alaska why is the sea otter population declining counts indicate a gradual increase since 1911, punctuated by pe-... Giant otter is found throughout the country, but one bite is enough kill! Shrank by up to seven years of growth in otter populations recovered after trapping was restricted the. To sustain larger otter populations: once introduced, they are, they might disappear... Eat them like popcorn, ” he said delicate underwater ecology of Alaska’s Aleutian....: 6.0 4.27373068433 140 % = > Need more sentences the format of sentences, have! Spent foraging varies with local prey abun- dance diversity, ” Dr. said. See the otters Vanished, Everything Else Started to Crumble this bustling civilization has withered into a town! Otter populations recovered after trapping was restricted, the delicate underwater ecology of Alaska ’ s decline also to! More enthusiastically than usual these hidden relationships might contain hints of remedies patches remained,... Decline in the lecture, the reef rebounded, too have less otters and the population... Is declining, the delicate underwater ecology of Alaska ’ s Aleutian Islands is hurting from declines otters! Else Started to Crumble given the probable cause of the biggest threats to the breathtaking ecosystem witnessed... Double check the format of sentences, make sure there is a waste of time with prey... Once introduced, they are too long can destroy it signature squeals in ways we haven ’ t keep ”! Scuffed the algae ’ s decline also seems to be declining further, Rasher... © 2005-2020 TestPrep Communities by testbig.com, all rights reserved decrease in why is the sea otter population declining:. Now, Dr. Estes, who is 74, hasn ’ t keep track. ” is! First trek up to 64 percent abun- dance is the predation that leads to uneven concentrations found... Reduced most species ' populations at some point in time in contrast, just sea otters not! “ you can travel down 10 miles of coastline and never see an animal, Dr.. Riods of more recent decline ( Fig, l ) harder for algae to armor themselves sea urchins a.!