Endangered Species

Since earth was created, there has been a natural phenomenon of species across the globe appearing and disappearing. However, in the past century, many species of animals have been disappearing at an alarming rate. Mainly, this rapidly occurring issue is caused by humans. Humans that contribute to the harmful actions that cause side effects such a pollution, deforestation, habitat loss and poaching. The natural rate of extinction pales in comparison to the extinction rate caused by all of these. According to the World Wildlife Fund, the current rate of extinction is 11,000 times greater than the natural extinction rate. Several different efforts have been made in order to stop or slow down the extinction of earth’s species. The Endangered Species Act is possibly the most successful example of these efforts. It’s main purpose is to get a commitment from the American people that they will work hand in hand to help save species that are at risk of becoming extinct and never returning. This act was put in place in 1973 and since then, no other law about the disappearance of wildlife has been quite as accomplished. Many different species that are protected under this law are either fully recovered or on their way to becoming safer. Laws like these are helping many different creatures left and right, however, at the alarming rate that they are disappearing, something else needs to be done. What people don’t seem to realize is that we depend on many of the animals that we are

An endangered species is a plant or an animal at risk of becoming extinct. Scientists have estimated that up to one-third of species in the U.S. are at a high risk of extinction. In addition to donating millions of acres of land, this is essential to the recovery and survival of the endangered; the Act has shown a ninety percent recovery rate for species in the U.S. The main causes of endangerment include loss of habitat, excessive hunting, and pollution.

Conservation of our biodiversity not only demonstrates foresight, it protects the natural resources so vital to our own continued existence. The value of any single species to an ecosystem is immeasurable; the environment will not endure without its species, despite size or niche. These animals are not dispensable. And, they are apt to face extinction in the not too distant future, unless a resolve for their preservation is insisted by the public and enforced by governments internationally.

Extinction: Most species become extinct because they can’t cope with the environmental change, and also because of introduced species that turned into competitors for

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

“Biological diversity is of fundamental importance to the functioning of all natural and human-engineered ecosystems, and by extension to the ecosystem services that nature provides free of charge to human society ”(Lloyd, 2014). Biodiversity is very important to both plants, animals and humans on Earth and if one species is destroyed it throw the balance off .

Over the past decade, permitted by the Species at Risk Act (“SARA”), the former Conservative Government of Canada made a series of decisions that raise troubling ques-tions with regard to the conservation of endangered species in Canada. This essay exam-ines how the lenient wording of SARA permitted the Federal Government to circumvent the intent of the Act and to inadequately protect the country’s endangered species.

Biodiversity loss threatens to disrupt the function of ecosystems, with the potential of consequences for humans as well. Often this loss is measured by species extinction rates, but considerations should be made to include population diversity with measures including changes in size, number, distribution and genetic composition of population and potential implications those changes may have (Luck et al., 2003). Avise (2004) goes as far as to say biodiversity is genetic

The three levels of biodiversity are as follows: diversity of the ecosystems, diversity of species within the communities and diversity within species. The loss of species within the ecosystems and within the community can cause a catastrophic result, as species live and feed on other species. Species close to extinction are endangered species, therefore protecting them from predators and offering the chance to reproduce and repopulate. Unfortunately, with little support within the environment, a species can become extinct due to population density. Proper monitoring of an endangered species is required in order to keep species actively reproducing and changing with the environment around them.

“Extinction means having no living representatives, having died out” (Dictionary.Com). We’re currently experiencing the worst spate of species die-offs since the loss of the dinosaurs 65 million years ago” (Center for Biological Diversity). Among all the species, there are still animals that have a hope of living the next generation. Despite being threatened they are not endangered. The orca whale, commonly known as the killer whale is a prime example. To date approximately 50,000 orca populations thrive though out the world. Previously the world wide estimate was double that, at 100,000 (Kirby). It has been found in resent studies that the orca population is decreasing due to many hardships they face such as toxins, captivity, and depletion of food.

Influence on ecosystems range from human causes like the bulldozing of a forest to natural causes like a fire or a flood.  In recent times, the introduction and spread of invasive species has transformed native communities rapidly and, in some cases, created irreversible damages.  In the Earth’s history, changes have often occurred in the ecosystems.  For example, glaciers and the retreat of glaciers cause wide-spread changes.  However, although change is a constant in ecosystems, animals and habitats often cannot adapt to the rapid alterations of non-natural stresses.  Harm to the environment from the introduction of invasive species occurs through changes in the habitat and declines in the native species.  Invasive species

Although the resources available for maintaining healthy ecosystems are limited, it is very important to focus conservation efforts on keystone species. These species significantly shape their ecosystem through helping keep all parts of the ecosystem in balance, affecting the population levels of other species, and are crucial for their role in stabilizing their ecosystems. When a keystone species disappears from an ecosystem, species in the lower trophies levels of the ecosystem may become overly abundant as the main predator doesn't keep their numbers “in check” or species from the higher trophic levels suffer as their favourite prey disappears. However, the importance of conserving these species changes when other species are endangered. This is because endangered species are at risk of extinction and like keystones their role in their ecosystems need to be fulfilled. If they reach extinction, their species will be

Since the beginning of life itself, some species have lived and prospered while other species have gone extinct never to be seen again by mankind. Because of this, some would claim that extinction is natural and not significantly problematic to the world that we live in. Others, however, understand that due to climate change, habitat loss, and poaching, more and more species are becoming endangered which leads to a chain reaction that can be devastating to ecosystems. Species such as the Chinook salmon, gorillas, tropical sharks, and polar bears are all directly affected by climate change, species such as northern spotted owls, Sumatran tigers, and lemurs are greatly harmed due to habitat loss, and species such as the sea turtle, Javan rhinoceros, African elephant, and the Red-Fronted Macaw are all affected by poaching driving them all closer and closer to becoming extinct.

The question is, how do we predict which animals may become extinct? The IUCN Red List is a system forecasting the probability of endangered species, nicknamed “The Red List.” The Red List is a series of factors that, up until this point, have been effective in identifying what will cause animals to become extinct. It also “categorizes species based on population-level symptoms of endangerment such as population size and trends, spatial distribution, and fragmentation (Stanton et al. 1066). Many environmentalists dispute the idea that climate change should be considered a factor on the Red List, so a study was done to show the rate of extinctions based on Red List criteria when climate change was included. The Red List says that conservation

It’s clear that a great extinction is coming from the evidence of the destruction of other species around us. The choices made by the human race have too often negatively affected the surrounding species. Tracy Wilson, the site director for HowStuffWorks.com, in an article for Animal Planet, states that