Wait a second!
More handpicked essays just for you.
More handpicked essays just for you.
Biodiversity loss and extinction
Biodiversity and habitat loss conclusion
Biodiversity loss and extinction
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Recommended: Biodiversity loss and extinction
In this essay, I will be talking about the loss of biodiversity in the southern hemisphere while focusing on Australia and Asia. I'll address what biodiversity is and what constitutes for its loss globally. Next, I'll talk about the increasing decline of biodiversity in Australia as well as Asia and why it's occurring. Then, I'll take a religious approach to the environment and how the loss of biodiversity ties into it. Last, I'll explore how Australia and Asia are trying to combat their loss of biodiversity and what I think we should implement to change it. Biodiversity is the variety of all life forms including animals & plants that can be found either in just one location, or on the whole planet. There are three main factors …show more content…
Australia is home to an estimated 570,000 different species (147,579 described species), giving it more than 5 per cent of the world’s plants and animals. In Australia, more than 1,700 species and ecological communities are known to be threatened and at risk of extinction. There are many causes for this loss of biodiversity in Australia that are shared worldwide as well. Those causes include: habitat loss, degradation, fragmentation, invasive species, unsustainable use and management of natural resources, changes to aquatic environment and water flows, changing fire regimes, and climate change. Due to these, Australia has experienced the largest documented decline in biodiversity of any continent over the past 200 years. Therefore, many animal and plant species have become extinct or are threatened to become extinct if Australia continues to use the environment in the same way. Approximately, more than 50 species of Australian animals have been listed as extinct, including 27 mammal species, 23 bird species, and 4 frog species with 426 animal species (including presumed extinctions) and 1,339 plant species listed as threatened under the EPBC (Environmental Protection and Biodiversity Conservation) Act. Constituting more than a third of Australia's 85 bioregions to have at least 30% of their ecosystems threatened. However, Australia's environment isn't as affected by the causes for the loss of biodiversity as Asia's environment is. Asia covers 14% of the world but contains half of the world's population, with population density eight times higher than the global average and uses about 40% of the total land primary production. Deforestation is the largest influence to Asia's loss of biodiversity but mining, dams, as well as oil and gas development open lands up to further degradation or clearance for
Australia is a land of rather extreme weather conditions and widely diverse climates that force the vegetation living there to adapt in many interesting ways. Australia is the driest continent, and biomes such as grasslands and savannas are prime sources of widespread catastrophic fires. The plants that grow in the vast arid and semi-arid regions of Australia are prone to fires simply because of the desert climates that they grow in. High temperatures combined with low fuel moisture contents, little humidity and drying winds that sweep across the landscape encourage many of the plants living in these areas to burst into flames at fairly frequent intervals. Serotinous cones, protective bark, intricate underground recovery systems, unique seed distributions and even the necessity of fire for reproduction are just some of the amazing ways that the major plant families which grow in these fire-prone areas have learned to adapt to their environments.
(http://www.encyclopedia.com/doc/1O7-densityfrequencydominance.html) Biodiversity is the number of richness or the number of species in a local area. This happens when someone can look at a species, in order to indicate a degree of uncertainty. This can happen by calculating the number of species given, where the individual is picked at random from the community. In other words, if the diversity is high, then oneself will have a poorer chance of correctly calculating the species of the next individual picked at random. (http://www.tiem.utk.edu/~gross/bioed/bealsmodules/shannonDI.html) This experiment was a way to find out the diversity of the school parking lot and the possibility to identify the type or model of the student’s, faculties and guest
a) The Daintree rainforest at Cape Tribulation, in far north Queensland is diverse in many ways. It holds 12 of the 19 primitive plant families in the world (Cairns Today, 2007). The forest covers an area of 1100 square kilometres and is approximately eighty kilometres wide. This dense and luxuriant rainforest has the greatest diversity than any other in Australia and many in the world. The Daintree is also the home of rare and threatened of being extinct plant and animal species. The importance of this ecosystem is the very high. This ecosystem contributes to the overall health of this plant in many ways. The diversity contributes in the breakdown of pollution and helps to control the climate to name a few. This rainforest also is a great ‘carbon sink’. It has many photosynthesising plants and this allows the control of carbon dioxide (CO2). The plants take in the CO2 from the atmosphere and return oxygen (O2)
Landscape fragmentation contributes to loss of migratory corridors, loss of connectivity and natural communities, which all lead to a loss of biodiversity for a region. Conservation of biodiversity must include all levels of diversity: genetic, species, community, and landscape (CNHP 1995). Each complex level is dependent upon and linked to the other levels. In addition, humans are linked to all levels of this hierarchy. A healthy natural and human environment go hand in hand (CNHP 1995). An important step in conservation planning, in order to guarantee both a healthy natural environment as well as a healthy human environment, is recognizing the most endangered elements.
There are many aspects to include when defining diversity. Diversity is understanding biological variations, space, social organization, communication, time and environmental control of a culture. The first aspect is understanding the different biological variations within different cultures of people. Biological variations include: body structure,
Climate change has affected biodiversity on the Great Barrier Reef significantly over the years and is continuing to have negative effects on the marine life. The rapid climate change puts the food chain at risk. Species of marine life are likely to decrease resulting in major biodiversity loss. Climate change has increased extreme weather such as flooding and cyclones. Extreme weather, such as cyclones has caused extensive amounts of physical damage to the reef, an exa...
Australia is home to the great barrier reef which is the world's largest coral reef system, and home to the kangaroo. Australia is the driest continent in the world. The outback is the part of Australia that few live in because it’s a vast desert (“Australia”). The great dividing range is a long chain of mountains that runs along the Pacific Coast of Australia (“Australia”). Australia is the driest inhabitable country in the world (“Australia”). The great barrier reef of Australia is the largest in the world (“Australia”). Australia is already a dry country and if the temperature rises anymore due to climate change than Australia could suffer from more severe forest fires and be doomed.
The Human Impact on Rainforests Human Impact on Rainforest is it a necessity? Rainforest are the beautiful gift of Mother Nature. It consists of the most magnificent species and plants in the world. 4.2% of the world’s animals live in the rainforest. This statistic it self shows how bad it would be to destroy such essential part of the worlds biodiversity.
Deforestation, defined by biologist Charles Southwick as "the destruction of forests; may involve clear-cutting or selective logging" (p. 365), is a predominantly human-driven process that is dramatically altering ecosystems worldwide. "Clear-cutting" involves the indiscriminant removal of every single plant and tree species from within a selected area. The other major process of deforestation, "selective logging," focuses removal efforts on only specific, predetermined tree species within a chosen area. The statistics gathered about human deforestation over time are considerable, and they can be somewhat controversial. Depending on the source and the location selected, the magnitude of deforestation varies. Southwick estimates that, approximately 10,000 years ago, 6.2 billion hectares (23.9 million square miles) of forest existed on earth (p. 117). That figure is equivalent to 45.5% of the earth's total land. He further estimates that, by 1990, this amount had declined 30%, with only 4.3 billion hectares of forest remaining (p. 117). Southwick also acknowledges other estimates that place the total amount of deforestation between 50% and 75% (p. 117). NASA has similar deforestation statistics that confirm these trends. According to their website, 16.5% of the Brazilian Amazon forests have been destroyed. They also note similar magnitudes of deforestation in Southeast Asia (Cambodia, Indonesia, Laos, Malaysia, Myanmar, Thailand, and Vietnam), despite the significantly smaller total area of forest within these countries. These grim figures are somewhat tempered by the NASA finding that, over the past ten years, the deforestation rate has declined from 6,200 square miles per year to 4,800 square miles per year. Though this trend is n...
Many of the issues of biodiversity loss can be traced back to human interaction to the environment. One of the issues is alteration and loss of habitats. A lot of this issue is based on the destruction of habitats and for the land to be used for human consumption. The land is either used up for agricultural use or for neighborhoods. Destroying habitats and building them for our own use can have a positive impact on our way of living but a negative impact on the environment. We would gain land for building land for crops and communities to be built. The habitat for the animals would be destroyed and the species local to the land would either relocate or die. There are restrictions to deforesting land and there are organizations to help protect the land.
Biodiversity is so important that if any chain or link is disturbed then the whole system will come to a halt. Biodiversity also boosts ecosystem productivity and if it declines automatically our ecosystem also declines as both are interdependent upon each other, where all the species play an essential role in the way ecosystem functions, so local and global species loss could threaten the stability of the ecosystem services on which humans depend. This is an interesting topic as well as a global issue concerning the whole human civilization and their existence. . The said issue as well as many other issues regarding our natural processes cannot be neglected as our present and future depends entirely on the sustainability and growth of this ecosystem and biodiversity. Our ecosystem completely depends on the way biodiversity functions. This is the reason I have chosen this topic and gathered information about how it e...
The United Nations designated 2011-2020 as the United Nations Decade on Biodiversity. In biodiversity, each species, no matter how big or small has an important role to play in ecosystem. Various plant and animal species depend on each other what each offers and these diverse species ensures natural sustainability for all life forms. A healthy and solid biodiversity can recover itself from variety of disasters. It is estimated that the current species extinction rate is between 1,000 and 10,000
NEED AND PURPOSE FOR CONSERVATION OF BIODIVERSITY: Biodiversity, a contraction of “biological diversity,” generally refers to the variety and variability of life on Earth. The very existence of human species and sustainable development depend on biodiversity conservation, therefore the need for conservation of biodiversity is basically for this reason that all living creatures need other creatures and plants in one way or the other. At least 40 per cent of the world’s economy and 80 per cent of the needs of the poor are mainly derived from biological resources. Biodiversity is necessary for our existence as well as valuable in its own right as it provides the fundamental building blocks for the many goods and services which are essential
The Earth is far and away the most biodiverse planet in our solar system, with about 8.7 million more unique species than the other 8 planets (UNEP). However, the Earth’s commanding lead is shrinking; not because the other planets are increasing biodiversity, but because Earth’s is decreasing. According to the World Wildlife Fund, we as a planet are losing 1,000 to 10,000 more species than the natural rate. Since the total number of species is hard to pin down, this can mean anywhere from 200 to 10,000 species going extinct per year (World Wildlife Fund). This obscenely high extinction rate is dangerous not just to ecosystems directly affected by the loss, but also creates a domino effect that circles around the globe and up and down the food
One of the reasons for loss in biodiversity is alteration of habitats. A habitat is the natural environment in which a species of living organism lives. If the habitat of a species is changed, it will cause the species to die or migrate to other places where it can find its natural habitat. There are many ways in which the habitat of plants and animals can be altered. One of them is land use changes. Since the beginning of human life, human beings have been changing land use for farming. Large areas of forests have been cleared by humans to increase the area of farming to satisfy their growing needs. Many biodiversity-rich landscape characteristics have been lost due to intensive farming (Young, Richards, Fischer, Halada, Kull, Kuzniar, Tartes, Uzunov & Watt, 2007). For example, traditional farming was replaced by private farms in Europe after the First World War causing an immense change in land use patterns. Another major proble...