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

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