The Evolution Of Species Extinction

Summarize: The result of one species extinction could potentially be fatal to the environment. In the animal kingdom, there is a food chain. Keystone animals, are the key ingredient to the food chain. When that keystone animals goes extinct, it sets off a chain reaction on the other animal’s food source. This causes one species to flourish and another to dwindle. The environment needs a healthy checks and balance system to keep each animal population under control (Stuart, 1990 ). Humans can cause the keystone animal to become extinct and therefore, responsible for rise and decline of other species, ultimately, throwing the food chain off balance.

The surviving species with the right amount of traits take advantage of these niches and live in them. This is called adaptive radiation. http://evolution.berkeley.edu/evolibrary/news/120901_afterextinction

A clear analysis shows that extinction has occurred so much, that they do not only list the animals, they have to list a broader and more general title, meaning extinction is so worst that writing the names of the animals' name will be too much, and writing the whole broad title will include thousands of animals under one title. With 41% amphibian, 26% of mammal species and 13% of birds. It is extremely alarming. And the extinction only includes the species that has been found and labeled by us, there are much more species that have not been discovered if any of those species goes extinct we would have never known they existed in the first place. The fact that the sixth extinction is compared to the mass extinction of wipe out that happened

One of the greatest gifts on this earth is the many species of animals that roam our planet and the wildlife that inhabit our world. A vast and diverse spectrum of wildlife keeps our planet functioning properly and it gives humans something to wonder at. Sadly, our planet’s species of animals are disappearing due to human activity. Our human activity is causing the next mass extinction and we are turning a blind eye to it.

In an ever-expanding world where resource scarcity is discussed in side conversations and overpopulation is being combatted by concerned nations, worldwide struggle of equal allocation of vital resources persist. Biological resources and biodiversity in general are at the forefront of these concerns. Decreasing biodiversity does not just pose a problem for the plants and animals that are becoming increasingly endangered; individuals who have constructed their livelihood around the availability of such resources face dire circumstances as scarcity arises. The greater the variety of abundant plant and animal species present in the world, the greater the potential opportunity, opportunities such as medical discoveries and newfound scientific knowledge that increase the sustainability of life on Earth. However, tragedy of the commons, has led to overuse of biological resources across the globe, throwing the issue of sustainability into question. While species extinction is a natural process in the world ecosystem, the rate at which it has increased is not. In the past 65 million years the rate of extinction has gone from one to five species per year to roughly 1,000 to 10,000 times that rate (Diversity, 2013, pg. 1). This is no longer a matter of natural selection; this is a matter of ineffective resource regulation worldwide. Despite extensive amounts of environmental legislation actively in place, specie scarcity will continue to grow. The greatest challenge now

Policy- and decision-makers claim information about the causes of population declines which driving species on the brink of extinction (). However, it is pointed out that the causes of vulnerability remain unclear to explain the variation to the risk of extinction (). According to Reynolds (2003), vulnerability is determinate by both the decline of species population and the reduction of their geographical range. These two forms of vulnerability are affected by both species’ mortality and habitat loss, which are the causes of intrinsic biological traits, extrinsic human induced effects and stochastic factors that likely determine the population trends (). It is suggested that extinction risk is not distributed by chance between taxa,

Studies indicates that nearly 16,000 type of animals, plants, fish and birds faces a grave danger of becoming extinct. This issue has left many asking why this is happening, and if there is something that can be done differently to protect them (Panda, 2013). I will specifically cover the following animals: blue whale, polar bear, tiger and the mountain gorilla. These animals are among the 16000 animals that are critically threatened with extermination (Panda, 2013). In fact, as indicated in IUCN Red List, approximately 22 out of a hundred of all mammalian class are likely to disappear in the next century (Panda, 2013). I selected this topic since I had not actually deliberated the statement previously, and was surprised after conducting preliminary research to establish the level of impact on our planet associated with the extermination of such large number of animal species.

In the past you’ve most likely heard about the extinction of dinosaurs and other prehistoric species that used to roam the earth far before our time. However, how many of you know the actual extent of extinction and how many species disappear every day? Not many people know about the mass amount of organisms dying off each day which is not helping the chances of them having potential to survive. It may be hard to swallow, but about one hundred fifty to two hundred types of animals, insects, plants, etc die off every day and has expected to stay that way throughout the twenty first century. Though many disappear because of natural causes or because of a change in their food chain, a few go extinct because of humans. In every million species to go extinct around a hundred to a thousand are due to humans every year.

Scientists estimates that 150-200 living species become extinct every 24 hours. The average human might not consider the significance of these dying species, but that may prove to be an issue in the near future. Living species, as Environmental Specialist Michael Marshall states provides “ecosystem services”. Some of these services are obvious, such as the meat that humans consume or the oxygen used to breathe. Imagine a world without any meat, and the widespread food shortages that would result. This fiction could become a reality if actions are not taken to prevent extinction. Because of the threats to resources that are required to sustain ourselves as humans, we must take steps towards conservation of species who are approaching extinction.

Violence against nature appears in various forms affecting different sectors of life. All kinds of hunting methods for recreation, food, fur, musk or any other reason have been the big threat to ecology. It is also known as exploitation of the rare species for commercialization purpose. The land of Nagas were once counted as the meeting place of wild animals and the riches forest but these days wild animals are no more, the dark green foliage is deceptive. It hides an unpalatable truth. The animals that once survived are on the endangered list. Once Nagaland was so rich in flora and fauna but now it is on the verge of extinct. The reason for the extensions of the wild plants and animals is people as they are greedy to get easily rich at the expenses of those beautiful and precious creatures .

Biological diversity underpins the earths structure and survival encompassing all plant animal and microbiology species (UN, 1992). Biodiversity is currently being lost at an alarming rate - with current rates of extinction being 100 times the background rate (Stork, 2010), which has consequent effects on other life on earth, disrupting eco-systems and environmental relationships. This raises social, economic and political issues, while concurrently human population increases urbanisation and demands on food and energy risking habitat and environment for species to survive. While conservation strategies work to try to alleviate this ultimately much of the success of these projects will ultimately rely on individual’s involvement and support – the gravity of the situation is further highlighted with more extensive and advanced species documentation. This essay will consider two important questions in respect of my personal views on biodiversity and consideration of whether I contribute to biodiversity loss and if biodiversity loss is important to me.

Thus, biodiversity crisis means the large number of different animals and plants are decreasing or in other word it’s facing extinction

Nonetheless, researchers agree that it is difficult to predict exact impacts of biodiversity loss on the environment and the combined effect of the biodiversity loss, degradation of the environment, and climate change. The latter three phenomena may intensify impacts of each other and lead to more severe and abundant problems relating to each of them. Therefore, it becomes of utmost importance to address the existing problems today so that the future of mankind

Biodiversity is the variety of living organisms (Cho, 2011). Currently, an extreme loss of biodiversity is a problem that is being caused by human activities. A major report in 2005 stated that due to human actions, between 10% and 30% of mammal, bird, and amphibian species are threatened with extinction, since then, the problem has only increased (Shah, 2014).

Thousands of species have become extinct over the last four decades as a result of changes in land use and as a result of global warming. Whether or not the millions of species can adapt and evolve to climate changes is debatable. As this brief overview will report, the human species is not adapting well to the changes. It must be remembered that increases in the levels of carbon dioxide are certainly responsible for the risk many species face, but so is the way land is used, e.g., rain forest destruction. There is a feedback loop wherein plant life and the climate are interdependent. Each affects the other. When forests are cut down, temperatures in that area will rise. Rising temperatures cause other plant life requiring cooler