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Human impact on the ecosystem
How have humans impacted the ecosystem
Human impact on the ecosystem
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Earth’s children are entering a time where tragic events are rapidly advancing and are drawing very near. As this horror is being realized, bitterness and distastefulness fills this human mouth as we will be witness to the “modern human-induced,” sixth mass extinction of species. From Ceballos G, and his assessments Ehrlich PR, Barnosky AD, Garcia A, Pringle RM, and Palmer TM, they have strictly proven, through very narrowed, factual, precise data, that proves that the extinction rates are higher than before due to of human activity. He establishes his data referenced on being conservative to not be accused of exaggerating on human impact on Earth, and to show, no matter the difference in statistics, either side proves the sixth mass extinction …show more content…
Here he establishes the unquestioned truth about a mass extinction underway. To further his credibility through his data, Ceballos uses numbers that cannot be questioned on whether or not he is exaggerating. “We ascertain whether even the lowest estimates of the difference between background and contemporary extinction rates still justify the conclusion that people are precipitating a global spasm of biodiversity loss.” He wants to show, through unbiased, thoughtful, and conservative data, and thus, has what convinced me that a sixth extinction can happen in the …show more content…
After discussing the basis of an extinction being more loss of species more than before, Ceballos explains how much, humans have caused the loss. Normal rate of extinction is 0.1 to 1 E/MSYs, and now its 2 E/MSYs, as said before. Well, as just saying this, it shows that before humans, less than one species went extinct per so many of so many years and Homo sapiens made an impact, it is 2. He does not even stop there. Ceballos explains through usage of graphs, to show the difference in years of the amount of biodiversity loss there is. In Figure 1, of page 3 of 5, in 1500-1900, there was a small incline in cumulative extinctions as a percentage. Slightly higher than .40%, mammals have been extinct from 1500-1700 but in 1700-1900, more than .60% of mammals were going extinct. What does this have to do with today, well in 1900-recent times, the percentage of mammals have increased more than .70%. There are bountiful of graphs of data that show since humans have arrived and increased in numbers, the more resources are needed and this simply shows that the extinction of animals are increasing far more rapidly because of human activity. “Current rates vastly exceeded natural average background rates, even when (i) the background rate is considered to be double previous estimates and when (ii)
In this paper Martin is arguing that late quaternary or near time extinctions where caused by human activity or as he calls it “overkill”. Martin recognizes that there have been many forces that have triggered extinctions in the planet on the past but disagrees with the idea that near time extinctions where caused by some commonly believed causes like climate change, disease or nutrient shortage. He argues that the arrival of humans to different continents, islands and the subsequent excessive hunting, the introduction of diseases and other competitors and predators was the cause of extinction of a great number of species “As our species spread to various continents we wiped out their large
There have been five mass extinctions over the last half-billion years while the sixth extinction is currently being examined by scientists around the world. Studies have shown that this is the most shocking and damaging event since the impact that caused the extinction of dinosaurs. This one is different from all others, because humans are the cause of this disaster to our current environment. If we don’t start to realize this issue and do something about it, eventually it will be too late to try to save the Earth and ourselves. I am going to analyze the sixth chapter, “The Sea Around Us,” for pathos, ethos, visual rhetoric and other related issues
“If you want to think about why humans are so dangerous to other species, you can picture a poacher in Africa carrying and Ak-47/ better still, you can picture yourself, holding a book on your lap” (Kolbert 266). This excerpt alone sets up the dark narrative that lies within The Sixth Extinction. It is uncomfortable to think about the impact that humans have on the environment on a global scale; however, it is nearly unbearable to recognize individual actions such as reading a book, directly contribute to the devastation of the earth.
For some people the numbers and facts don’t really matter, they read through Manning’s description of extinction and focus on the conclusion he created. Others will focus blindly on the increased extinction rate and rue the day mankind was created. But, there is one group of people who will see “before human domination” (pg. 1) and lose their scientifically accurate minds. Manning is unknowingly referring to the ratio between the background extinction rate and the actual distinction rate, i.e. what scientist think is the extinction rate right now with humans vs. no humans, and referring to it as if it is two completely different rates at two completely different points in time. Small flaws like these are insignificant to the average reader but comparable to kryptonite to credibility from a scientific audiences view. Throughout the essay, these inaccuracies consistently occur, those who know the law of thermodynamics know is not the same as energy transformation in a food-chain and that the scientific method that you simply can’t make conclusions drawn from two different fields of inaccurately portrayed science based on your opinion and call it
On a day to day basis, most people take for granted the lives we get to live, and put too much value on the extra things such as materialistic items. Also, the majority of humans are too invested in their personal lives or with themselves that they do not look at the big picture of how what we are doing now will effect us later. As humans, the routines in our lives can bring us harm, and within time a we may become the sixth extinction. In “The Sixth Extinction” by Elizabeth Kolbert, she gives many examples of animals that are or may become extinct. Along with ways humans contribute to the effort of putting them in danger or having them become extinct. In the end having a summary of how this all comes together and impacts us humans in more
Humans can not be the only thing that is hurting the Earth. When you really think about it, Earth goes through a lot of natural disasters, which cannot be controlled. According to an activist, Tim Haering, “Tsunamis, floods, volcanoes, earthquakes, tornadoes, wildfires, disease nature kills more than we kill each other.” Earth throws in all of these natural ...
In, The Fate of the Earth by, Jonathan Schell, he starts with the extinction of dinosaurs then moves onto how it’s not possible to judge on human extinction. He also talks about how the extinction of animals and how we have learned from our mistakes. He states how we live, then we die. And how different catastrophes could kill everyone or how they could slowly become extinct from those catastrophes. He mainly talks about population and how the extinction of human beings and once we are extinct we are done.
Long-term survival of a species depends on its ability to adapt to changing environmental conditions (Murphy, 1994). Genetic diversity within a species, which has taken 3.5 billion years to evolve, makes adaptations to these changing environments possible. Unfortunately, the rate of extinction of genetically diverse organisms is rapidly increasing, thus reducing this needed biodiversity, largely due to the human impacts of development and expansion. What was an average of one extinction per year before is now one extinction per hour and extinct species numbers are expected to reach approximately one million by the year 2000 (WWW site, Bio 65). As a result governmental and societal action must be taken immediately!
During the past week, I had the opportunity to participate in an organized class debate regarding the use of scientific technology to bring extinct species back to life. The debate topic was presented within the framework that technology and practices capable of achieving the feat of de-extinction have already been developed. In other words, de-extinction is no longer merely a fantastical concept of science fiction, but something that is currently being pursued. The scope of discussion was rather broad as we not only discussed the potential implications of de-extinction on the environment, but also the implications that it may have on human morals, values, health, and societal advancement. I was assigned to argue in opposition of bringing extinct organisms back to life.
For example, chapter 4 brings up the question of how much Homo Sapiens played a role in the extinction of most of the large marsupial mammals in Australia. The evidence is presented that, after Homo Sapiens arrived on the continent of Australia, “of the twenty-four Australian animal species weighing 100 pounds or more, twenty-three became extinct” (65). This is the type of evidence that cannot be disputed. It is a literal fact that certain areas with large mammal populations experienced a decrease in those populations upon the arrival of Homo Sapiens. Thus it is posited that humans have been a strong antagonist to other species for many thousands of
Earth has gone through five fully major extinctions before. We currently are in the process of Earth’s sixth mass extinction. This mass extinction is closely related in severity to the extinction of the dinosaurs. Earth’s extinctions are broken into three different areas. The first area was the large number of animals caught by hunter-gathers. The discovery of agriculture led to the second area of extinction, wildlife habitats. These wildlife habitats were destroyed due to humans starting to stay in one area.
== = = Human beings are dependent on the Earth's diversity of species for our survival. Wild species play a vital role in the maintenance of the planets ecological functions, yet everyday on the planet 40-100 species become extinct.
Nowadays it is common to read articles in newspapers and magazines regarding biodiversity issues. Human beings have been knowingly and unknowingly destroying biodiversity since their existence. Biodiversity is the measure of the variety of species of animals living in an area. Forests are usually areas with high biodiversity while deserts are the opposite. Human beings have always destroyed biodiversity either by deforestation, or by some other means. Biodiversity depletion is a natural phenomenon. But the present levels of biodiversity depletion are many times higher than the natural rate. Recently the levels of loss in biodiversity have started causing global concern. Some of the main causes for loss in biodiversity are alteration of habitats, increasing levels of pollution and human population growth.
Everyone’s all seen those wildlife shows on tv. The shows on National Geographic and such, showing animals in beautiful environments, everything lush and growing and nothing at all wrong that could threaten these creatures and places. But, have anyone seen the other side? The side where all these beautiful creatures and plants starve, are decimated by predators that have never been there before, and sometime even become poisoned by their very own homes and habitats? Of course no one has. That doesn’t mean that its not happening. It is happening, and its happening everywhere. And guess who is to blame? People. Society. Humans as a race pollute the environment, hunt animals simply for their parts, fish way more than humans will ever need just for the sake of money, introduce new species to new places for our own gain, and even purposefully destroy entire regions just for human expansion. And its starting to take its toll. While it is true that nature is constantly in flux and certain species come and go, humans are causing more species to disappear in the past few hundred years then nature has ever caused since the age of the dinosaurs, and therefore it is up to humans to repair the damage caused, be it cleaning the environment and habitats of these creatures, or taking more direct action to protect and preserve the species that are on the brink of extinction.
I attended Mass at my local parish, the Parish of St. Francis de Sales, on Sunday, October 9th, in order to receive the Sacrament of the Eucharist. This also happens to be the 28th Sunday of Ordinary Time because the priest of the parish, Father Phan, wore green in order to symbolize life, anticipation for the coming of Christ, and hope. The liturgical season of Ordinary Time is also significant because it focuses on the fruits of Jesus’s three-year public ministry, his educational parables, and his extraordinary miracles. The season of Ordinary Time also serves as a reminder that the Church’s mission, our mission, is to not only share the life and hope of Jesus