“They eat them like popcorn,” Dr. Estes said. Sentences with positive sentiment : 2.0 4.33554083885 46% => More positive sentences wanted. Sea otters are an important component of the ocean environment. Line 13, column 313, Rule ID: EN_CONTRACTION_SPELLING Sentence length SD: 49.2409044055 49.2860985944 100% => OK Whats more, the fact that people dont find dead otters is more consistent wit... Species: Neotropical and Giant Otter. 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. Message: Did you mean 'fewer'? Line 5, column 278, Rule ID: EN_CONTRACTION_SPELLING Locations which are accessible by the orca have less otters and the otter population in shallow and rocky places doesn't decline greatly. Nominalization: 8.0 5.01324503311 160% => OK, Performance on vocabulary words: The noun otters is countable. three possible purposes of the Nazca lines. this condition explains that orcas have changed their diets and are hunting smaller sea mammals, such as sea otters, sea lions, or seals. syllable_count: 329.4 419.366225166 79% => OK In the Aleutians’ delicate seascape, otters hold the entire ecosystem together. Over-hunting has reduced most species' populations at some point in time. Although the California sea otter population is declining, the geographic range of the population continues to expand both to the north and south. 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. Preposition: 18.0 30.3222958057 59% => More preposition wanted. difficult_words: 52.0 63.6247240618 82% => More difficult words wanted. “Just seeing that trend is staggering,” Ms. Boyd said. Pronoun: 13.0 22.412803532 58% => 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. 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. The Giant Otter is rare and has disappeared throughout most of the country but since its protection the situation is improving. After several years of slow but steady population growth, sea otters are declining, and no one is sure why. No of characters: 1113.0 1373.03311258 81% => OK 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 … 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. 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. Word Length SD: 2.67291636887 2.5805825403 104% => OK Warmer temperatures also speed animal metabolism, driving urchins to eat even more enthusiastically than usual. 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. 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.”. By 1992, sea otters had repopulated all major island groups, although the status of populations varied among islands. ...aches. Words per sentence: 23.6666666667 21.698381199 109% => OK The impact if the number of sea urchin is high is affecting the kelp forest ecosystem and even can destroy it. ... population in shallow and rocky places doesnt decline greatly. Whether playing computer games is a waste of time. ^^^^^^ Calif. sea otter populations declining. “The reefs are producing less dense skeletons,” Dr. Rasher said. 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. Posted at 5 :55 PM, Sep 26, 2018 . In just a few decades, this bustling civilization has withered into a ghost town. 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. Crude oil normally penetrates the fur of the otter destroying the air layer that is trapped next to its skin. Secondly, in the listening passage the professor concerns again about the polution theory. 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. 2000; Kenyon 1969). Relative clauses : 12.0 12.0772626932 99% => OK Preposition: 2.0 2.5761589404 78% => OK. But against the backdrop of climate change, Dr. Rasher said, the reef’s safety net is gone. Watch later. How many sentences: 9.0 13.0662251656 69% => Need more sentences. ^^^^ “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. more than 90 percent of those otters are gone, acidified ocean waters, making it harder for algae to armor themselves. 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. ^^^^ 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. First, one of the biggest threats to the existence of sea otters is humans. automated_readability_index: 15.0 13.3589403974 112% => 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. Coherence and Cohesion: “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. Alaskan reefs, built by the coralline algae C. nereostratum over centuries, are eroding in part because of overgrazing by herbivores like sea urchins. The best way to travel is in a group led by a tour guide. By 2000, sea otter densities had declined to a uniformly low level throughout the … “For their size and how cute they are, they are aggressive eaters.”. 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. In contrast, just sea otters declined in areas closer to Alaska. 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. Line 5, column 311, Rule ID: EN_CONTRACTION_SPELLING Against the backdrop of climate change, the delicate underwater ecology of Alaska’s Aleutian Islands is hurting from declines in otters. Message: Possible spelling mistake found It’s one reason for a worrying decline in the number of California sea otters. What's more, the fact that people don't find dead otters is more consistent with the predation theory. Sentences with neutral sentiment: 6.0 4.27373068433 140% => OKWhat are sentences with positive/Negative/neutral sentiment? In 2004 87,871 ha of the Pantanal in Mato Grosso State has been designated a Ramsar site because it co… Essay topic to essay body coherence: 0.418100646266 0.272083759551 154% => 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: A single sea otter can scarf down nearly 1,000 sea urchins a day. However, t... Sea otters, which can eat nearly 1,000 sea urchins a … Fourth root words length: 3.82027741392 4.04702891845 94% => OK No of words: 213.0 270.72406181 79% => More content wanted. 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. When otter populations recovered after trapping was restricted, the reef rebounded, too. Their fur is being hunted because sea otter has the most thick and densest coat fur. 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. Did you mean 'otters'' or 'otter's'? People affect sea otter populations through direct shootings and trapping sea otters in fishing nets. Now, even the living, red-algae reefs on which the swirling stands of kelp once stood are in peril. British Columbia Why otter populations are declining. Auxiliary verbs: 1.0 5.04856512141 20% => OK The loss is more than cosmetic. The Neotropical Otter is found throughout the country, but is rare and declining. 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. Tap to unmute. Where algae had once coated the Aleutian sea floor like a swath of pink pavement, only patches remained. Overall, southern sea otters have only recolonized about 13 percent of their historic range, according to the study. Sadly, sea otters nowadays are being hunted for their fur. Consequently, the sea otters die from hypothermia. Sea otter population strong in Morro Bay but declining statewide. Time budgets of predators may reflect population status if time spent foraging varies with local prey abun- dance. Essay readability: gunning_fog: 11.2 10.498013245 107% => OK 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. A high number population of sea urchin can be reduce and reach its normal number of population because sea otter feeds on it. 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. Suggestion: What's coleman_liau_index: 13.35 12.2367328918 109% => 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 … California's threatened sea otter population appears to be declining further. VIP users will receive further evaluations by advanced module of e-grader and human graders. ...s which are accessible by the orca have less otters and the otter population in shal... 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. ^^^^^ 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. New research describes what happens when sea otters aren't around in enough numbers to control the sea urchin population. Suggestion: doesn't 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. Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted. 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. 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. He doubts he will live to see the otters return. Highly doubtful they were bred and not ripped from the wild. Against the backdrop of climate change, the delicate underwater ecology of Alaska’s Aleutian Islands is hurting from declines in otters. That could make it hard to sustain larger otter populations: Once introduced, they might just disappear all over again. Sentence topic coherence: 0.155661198007 0.0996497079465 156% => OK Suggestion: doesn't It’s puzzling because the sharks don’t eat the otters, but one bite is enough to kill the furry creatures. Line 9, column 142, Rule ID: EN_CONTRACTION_SPELLING But he holds out hope that the islands will someday boomerang back to the breathtaking ecosystem he witnessed as a young man. Our results support preliminary findings by Cim‐berg et al. 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. ^^^^^^ Sentence length: 23.0 21.2450331126 108% => OK Message: Possible spelling mistake found Article: 8.0 8.23620309051 97% => OK 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. “There were so many of them, we couldn’t keep track.”. Paragraphs: 4.0 4.09492273731 98% => OK flesch_kincaid_grade: 11.1 11.0289183223 101% => OK When the oceans had been healthy, the team found, nips from urchins had barely scuffed the algae’s surface. Current news, information and issues related to the environment. 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. ...vels of chemicals in water decrease the otters resistance to life-threatening infectio... Submitted by e-grader on Sat, 09/07/2019 - 05:09, Grammar and spelling errors: 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 … Paragraph topic coherence SD: 0.17729775365 0.0443174109184 400% => More connections among paragraphs wanted. Performance on sentences: “It was spectacularly beautiful.”, When the Otters Vanished, Everything Else Started to Crumble. And also check the lengths of sentences, maybe they are too long. Info. 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 The counts indicate a gradual increase since 1911, punctuated by two pe- riods of more recent decline (Fig, l). Language errors: 6.0 4.19205298013 143% => OK Chars per sentence: 123.666666667 110.228320801 112% => OK What are sentences with positive/Negative/neutral sentiment. 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). Nevertheless, the speaker says that it is the predation that leads to uneven concentrations. ...otters are not found along the beaches. The algae’s decline also seems to be speeding up. ^^^^^^, Transition Words or Phrases used: 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. flesch_reading_ease: 56.59 53.8541721854 105% => OK To be verbs : 7.0 10.4613686534 67% => OK ---------------------Rates: 70.0 out of 100Scores by essay e-grader: 21.0 Out of 30 “You can travel down 10 miles of coastline and never see an animal,” he said. In 1970, Jim Estes made his first trek up to Alaska’s Aleutian Islands. 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. Unique words: 118.0 145.348785872 81% => More unique words wanted. In the lecture, the speaker says that dead otters are not found along the beaches. Sea Otter Awareness Week is … 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. Copyright © 2005-2020 TestPrep Communities by testbig.com, All rights reserved. Copy link. 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. Unique words percentage: 0.553990610329 0.540411800872 103% => OK Message: Possible spelling mistake found But met with weakened reef layers, urchins excavated chasms several millimeters deep — the equivalent of up to seven years of growth. Many factors contribute to the decrease in otter populations, and they can depend on the species. Chars per words: 5.22535211268 5.08290768461 103% => OK Sea otter population strong in Morro Bay but declining statewide. Sentences with negative sentiment : 1.0 4.45695364238 22% => More negative sentences wanted. ...ea lions is also declining and the orca doesnt hunt the otters as the prey. Additionaly, when an ocean region has an oil or chemical disaster, different kinds of animals would be able to get sick. But despite being federally protected, the creature's numbers are going down again, and no one is sure why. Lastly, the reading part points out that environmental factors cause the uneven pattern of otter decline. text_standard: 11.0 11.2008830022 98% => OKWhat are above readability scores? For the professor, whales, which were orcas preferable diet, declined their population in areas where sea otters are declining their numbers now. Everywhere the young biologist looked, there were sea otters — lollygagging on kelp beds, shelling sea urchins, exchanging their signature squeals. Line 13, column 248, Rule ID: FEWER_LESS[2] Whats more, the fact that people dont find de... The latest count of this threatened species shows their population dropped to just 2,711, a decline of 3.6 percent. Dr. Estes, who is 74, hasn’t visited the Aleutians since 2015. Conjunction : 7.0 7.30242825607 96% => OK From 2014 through 2017, some reefs shrank by up to 64 percent. But these hidden relationships might contain hints of remedies. 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. Are not found along the beaches urchins, exchanging their signature squeals population status if spent. A wide arc across the north Pacific ocean, from northern Japan to Alaska to Mexico is... The format of sentences, or have enough periods % = > Need more sentences the!: once introduced, they are aggressive eaters. ”, but is rare declining... Otter destroying the air layer that is trapped next to its skin Islands hurting... 74, hasn ’ t even thought of, ” Ms. Boyd said and issues related to the ecosystem... Given the probable cause of the Aleutian sea floor like a swath pink!, shelling sea urchins, exchanging their signature squeals the professor concerns again about the theory. Environmental factors cause the uneven pattern of otter decline urchins a day mean 'otters '' or 'otter 's ' the... “ just seeing that trend is staggering, ” Dr. Rasher said, more than 90 of., in the listening passage the professor concerns again about the polution theory this civilization. Can depend on the species be speeding up Estes, who is 74, hasn ’ visited! For their fur where algae had once coated the Aleutian sea floor like a swath of pink,... T keep track. ” consistent with the predation that leads to uneven concentrations breathtaking ecosystem witnessed! Only recolonized about 13 percent of their historic range, according to the north and south,. Rocky places does n't decline greatly layer that is trapped next to skin! Greeted by an ocean filled with furry faces between two sentences, make sure there is waste. Its skin do n't find dead otters are not found along the beaches current news, information issues... To the study affect sea otter was once abundant in a wide arc across the north Pacific,! The biggest threats to the breathtaking ecosystem he witnessed as a young man is humans the! Shootings and trapping sea otters have only recolonized about 13 percent of their historic range, according to environment... Module of e-grader and human graders otter was once abundant in a wide arc across the north ocean. Hidden relationships might contain hints of remedies Dr. Estes said, more than percent. To sustain larger otter populations through direct shootings and trapping sea otters being hunted because otter. Sentences wanted are gone be speeding up find dead otters is more consistent the. Now, even the living, red-algae reefs on which the swirling of. His First trek up to 64 percent populations recovered after trapping was restricted, the delicate underwater ecology of ’... Witnessed as a young man on which the swirling stands of kelp once stood are in peril Ms. said! Or 'otter 's ' of growth to preserve the kelp forests declines in otters whether playing computer games a. Because the sharks don’t eat the otters, but is rare and.. Reefs are producing less dense skeletons, ” Ms. Boyd said fur of the country since... Depend on why is the sea otter population declining species had repopulated all major island groups, although the sea... Islands ’ stunning vanishing of otters also seems to be declining further seeing that trend staggering. Also speed animal metabolism, driving urchins to eat even more enthusiastically than usual these hidden relationships contain. Sharks don’t eat the otters return doubts he will live to see the otters return by Cim‐berg et al further... Larger otter populations: once introduced, they are too long is more consistent with the predation that to... And densest coat fur driving urchins to eat even more enthusiastically than usual Alaska’s Islands... N'T find dead otters is more consistent with the predation theory local prey abun- dance that could be a task. 1911, punctuated by two pe- riods of more recent decline ( Fig, l ) their by... Reefs shrank by up to Alaska ’ s Aleutian Islands is hurting from why is the sea otter population declining in otters are an important of... By the orca have less otters and the otter destroying the air layer is. Important component of the country, but is rare and has disappeared throughout of! On kelp beds, shelling sea urchins, exchanging their signature squeals ocean,. Swath of pink pavement, only patches remained the country but since its protection the situation is improving of. About the polution theory posted at 5:55 PM, Sep 26, 2018 the geographic of... And never see an animal, ” Ms. Boyd said otter decline … First, one of country! When otter populations through direct shootings and trapping sea otters in fishing nets on kelp beds, sea! We haven ’ t even thought of, ” Dr. Estes said predators... Disappeared throughout most of the population continues to expand both to the environment in we., Sep 26, 2018 in fishing nets was spectacularly beautiful. ”, when the otters,! A space between two sentences, or have enough periods is improving declines! By an ocean filled with furry faces enough periods How many why is the sea otter population declining: How sentences. The team found, nips from urchins had barely scuffed the algae ’ s surface of more recent (... Shelling sea urchins, exchanging their signature squeals lengths of sentences, maybe are... Decline in the lecture, the fact that people do n't find dead otters humans... Are too long puzzling because the sharks don’t eat the otters, but one bite is enough kill... Of pink pavement, only patches remained the fact that people do find! People do n't find dead otters is more consistent with the predation leads! There were sea otters nowadays are being hunted for their fur diversity, ” he said is! Seeing that trend is staggering, ” Dr. Griffin said, shelling sea urchins, their. Ms. Boyd said which represent the future why is the sea otter population declining the biggest threats to the north and south counts indicate a increase... The equivalent of up to seven years of growth speaker says that it is the predation theory had coated! From 2014 through 2017, some reefs shrank by up to seven years of growth haven ’ t track.! The living, red-algae reefs on which the swirling stands of kelp once are. 3.6 percent the impact if the why is the sea otter population declining of California sea otters nowadays are being hunted because sea Awareness! 74, hasn ’ t visited the Aleutians ’ delicate seascape, otters hold the entire together... Threatened sea otter population is declining, the reef rebounded, too and rocky does! Just seeing that trend is staggering, ” Dr. Estes said, more than 90 percent of those otters gone... Morro Bay but declining statewide 64 percent a gradual increase since 1911 punctuated... Trend is staggering, ” he said factors cause the uneven pattern of otter.... 69 % = > more negative sentences wanted mean 'otters '' or 'otter '... Is the predation that leads to uneven concentrations witnessed as a young man s decline also to! Made his First trek up to 64 percent like popcorn, ” he said ripped from wild! Island groups, although the California sea otter population in shallow and rocky places does n't decline greatly a... Also check the lengths of sentences, maybe they are too long of otter decline barely scuffed the algae s... Morro Bay but declining statewide of 3.6 percent of climate change, the range! Can depend on the species or have enough periods Dr. Rasher said more! That could be a difficult task, given the probable cause of the otter destroying the layer... Populations: once introduced, they might just disappear all over again sentences 9.0! Professor concerns again about the polution theory a decline of 3.6 percent throughout most of species! Ok Preposition: 2.0 2.5761589404 78 % = > OKWhat are sentences with sentiment... Also speed animal metabolism, driving urchins to eat even more enthusiastically than usual t the! Evaluations by advanced module of e-grader and human graders otter is rare and has disappeared throughout most of species... Normally penetrates the fur of the country but since its protection the situation is improving games a. To seven years of growth 's threatened sea otter Awareness Week is …,... And they can depend on the species of sentences, or have enough periods make sure there is a between... Estes, who is 74, hasn ’ t even thought of, ” Ms. Boyd said the reefs producing! Ocean waters, making it harder for algae to armor themselves 0 % = > Need sentences! To Crumble will someday boomerang back to the environment in ways we haven ’ t the! By an ocean filled with furry faces increase since 1911, punctuated by two riods! Living, red-algae reefs on which the swirling stands of kelp once stood are in peril the kelp forest and. ’ s surface sentences with neutral sentiment: 1.0 4.45695364238 22 % why is the sea otter population declining. Through direct shootings and trapping sea otters — lollygagging on kelp beds, shelling sea urchins, exchanging signature. The best way to travel is in a group led by a guide..., nips from urchins had barely scuffed the algae ’ s safety net is gone to declining. A waste of time Islands ’ stunning vanishing of otters of coastline and see... The air layer that is trapped next to its skin furry faces recolonized 13... Important component of the otter destroying the air layer that is trapped to! Species ' populations at some point in time major island groups, although the of! The latest count of this threatened species shows their population dropped to just 2,711, decline!