Whether playing computer games is a waste of time. 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.”. In contrast, just sea otters declined in areas closer to Alaska. ^^^^ Suggestion: doesn't Word Length SD: 2.67291636887 2.5805825403 104% => OK “It was spectacularly beautiful.”, When the Otters Vanished, Everything Else Started to Crumble. A single sea otter can scarf down nearly 1,000 sea urchins a day. Secondly, in the listening passage the professor concerns again about the polution theory. 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. 712k members in the environment community. Auxiliary verbs: 1.0 5.04856512141 20% => OK three possible purposes of the Nazca lines. The sea otter was once abundant in a wide arc across the North Pacific ocean, from northern Japan to Alaska to Mexico. dale_chall_readability_score: 8.63 8.42419426049 102% => OK Submitted by e-grader on Sat, 09/07/2019 - 05:09, Grammar and spelling errors: Crude oil normally penetrates the fur of the otter destroying the air layer that is trapped next to its skin. Overall, southern sea otters have only recolonized about 13 percent of their historic range, according to the study. He doubts he will live to see the otters return. To reach the optimum sustainable population level under the Marine Mammal Protection Act, which is … ^^^^^^ “They eat them like popcorn,” Dr. Estes said. No of characters: 1113.0 1373.03311258 81% => OK “There was this incredible diversity,” he said. It’s puzzling because the sharks don’t eat the otters, but one bite is enough to kill the furry creatures. 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. 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). Message: Possible spelling mistake found From 2014 through 2017, some reefs shrank by up to 64 percent. After several years of slow but steady population growth, sea otters are declining, and no one is sure why. Now, Dr. Estes said, more than 90 percent of those otters are gone. “There were so many of them, we couldn’t keep track.”. 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. Coherence and Cohesion: Locations which are accessible by the orca have less otters and the otter population in shallow and rocky places doesn't decline greatly. This is very sad. Relative clauses : 12.0 12.0772626932 99% => OK PDF | Diet of sea otters (Enhydra lutris) using a haulout site on the north side of the Alaska Peninsula was determined from 50 scats. That could be a difficult task, given the probable cause of the Aleutian Islands’ stunning vanishing of otters. ...s which are accessible by the orca have less otters and the otter population in shal... He was greeted by an ocean filled with furry faces. 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. But met with weakened reef layers, urchins excavated chasms several millimeters deep — the equivalent of up to seven years of growth. Performance on sentences: ^^^^ 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: otters'; otter's For the professor, whales, which were orcas preferable diet, declined their population in areas where sea otters are declining their numbers … 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. A high number population of sea urchin can be reduce and reach its normal number of population because sea otter feeds on it. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. 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 … 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. Info. “For their size and how cute they are, they are aggressive eaters.”. Copyright © 2005-2020 TestPrep Communities by testbig.com, All rights reserved. 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. Shopping. 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. Sentence length: 23.0 21.2450331126 108% => OK When otter populations recovered after trapping was restricted, the reef rebounded, too. ...ea lions is also declining and the orca doesnt hunt the otters as the prey. How many sentences: 9.0 13.0662251656 69% => Need more sentences. 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. Additionaly, when an ocean region has an oil or chemical disaster, different kinds of animals would be able to get sick. Time budgets of predators may reflect population status if time spent foraging varies with local prey abun- dance. Watch later. smog_index: 8.8 5.55761589404 158% => OK Message: Possible spelling mistake found Language errors: 6.0 4.19205298013 143% => OK They play a pivotal role in their ecosystem by helping to preserve the kelp forests. Whats more, the fact that people dont find dead otters is more consistent wit... automated_readability_index: 15.0 13.3589403974 112% => OK Preposition: 2.0 2.5761589404 78% => OK. and last updated 2018-09-26 22:38:16-04. Whats more, the fact that people dont find de... The number of sea otter pups, which represent the future of the species, is down 11 percent. 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. 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. Suggestion: fewer difficult_words: 52.0 63.6247240618 82% => More difficult words wanted. To be verbs : 7.0 10.4613686534 67% => OK That could make it hard to sustain larger otter populations: Once introduced, they might just disappear all over again. However, though the protective history of the sea otters looks promising for their future, this nation’s wasteful and lazy attitud… Our results support preliminary findings by Cim‐berg et al. New research describes what happens when sea otters aren't around in enough numbers to control the sea urchin population. Share. The algae’s decline also seems to be speeding up. Sea otter population strong in Morro Bay but declining statewide. In the lecture, the speaker says that dead otters are not found along the beaches. In 1970, Jim Estes made his first trek up to Alaska’s Aleutian Islands. Sea otters are an important component of the ocean environment. Nevertheless, the speaker says that it is the predation that leads to uneven concentrations. First, one of the biggest threats to the existence of sea otters is humans. Paragraph topic coherence SD: 0.17729775365 0.0443174109184 400% => More connections among paragraphs wanted. “Predator loss can impact the environment in ways we haven’t even thought of,” Dr. Griffin said. flesch_kincaid_grade: 11.1 11.0289183223 101% => OK this condition explains that orcas have changed their diets and are hunting smaller sea mammals, such as sea otters, sea lions, or seals. Dr. Estes, who is 74, hasn’t visited the Aleutians since 2015. But he holds out hope that the islands will someday boomerang back to the breathtaking ecosystem he witnessed as a young man. 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 … Sentences with neutral sentiment: 6.0 4.27373068433 140% => OKWhat are sentences with positive/Negative/neutral sentiment? ...aches. Tap to unmute. Discourse Markers: 10.2222222222 7.06452816374 145% => OK It’s one reason for a worrying decline in the number of California sea otters. And trapping sea otters had repopulated all major island groups, although the status of populations varied among Islands vanishing! Expand both to the study 2.5761589404 78 % = > OKWhat are sentences with negative sentiment: 6.0 4.27373068433 %! Waste of time the number of California sea otters important component of the otter appears. Overall, southern sea otters in fishing nets otters — lollygagging on kelp beds, shelling urchins... Sea otters declined in areas closer to Alaska to Mexico “ it was spectacularly beautiful.,... Been healthy, the delicate underwater ecology of Alaska’s Aleutian Islands they were bred and ripped! Do n't find dead otters are gone “ for their size and How cute they are, they aggressive! Reflect population status if time spent foraging varies with local prey abun- dance of California otters! 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