Pdf the biodiversity, diversity in life forms, suffers greater threat from degradation, habitat. Short for biological diversity, biodiversity includes all organisms, species, and populations. Biodiversity biological diversity is the total variety of living organisms in all ecosystems on earth, the genetic differences between them, and the communities and ecosystems in which they occur. Biodiversity includes the genetic variability for which different varieties of spices have appeared in the course of evolution and diversity of life forms such as plants, animal microbes, etc. Biodiversity is that part of nature which includes the differences in genes among the individuals of a species. For example, land use change through deforestation is a leading driver of disease emergence in. Biodiversity, ecosystems and their species perform important biological services, for example, green plants remove carbon dioxide and release oxygen into the atmosphere, which helps keep the environment healthy and fit for human life. Biodiversity the concept of biodiversity has provoked considerable debate and misunderstanding among the general public, decisionmakers, and even the scientific community. Contents n importance n intrinsic value n extinctions n what is biodiversity.
Threats and constraints potato alone providing 60%. May 23, 2015 biodiversity is vital to keep all life on earth healthy, balanced and thriving. Renewable energy development threatens many globally. By securing the lifesustaining goods and services which biodiversity provides to us, the conservation and sustainable use of biodiversity can provide significant benefits to our health.
Hippo a threat to biodiversity follow green living. Threats to biodiversity activity 1 science photography aloha fellow scientists. Wild plants such as cinchona and foxglove plant are used for medicinal purposes. The term that is used to define this crowd of organisms that populate every corner of the planet, and that have adapted even to the most extreme environments, is biodiversity or biological diversity. While the plant species are very important for the existence of human beings, the role of animals in the ecosystem can not be ignored. Conservation and sustainable use of biodiversity revised2. Pdf biodiversitythreats and conservation researchgate.
Antarctic biodiversity faces increased threats despite. The planet earth is habitat for a wide variety of flora and fauna like plants, animals and other life forms. The natural disaster prevention mechanisms in most ecosystems and other free services we all get from the surrounding environment are not easily replaceable or replicable, so maintaining biodiversity is important. Threats to biodiversity the nature trust of british columbia.
Forest provides livelihoods for millions of people worldwide, through. Today you will have an opportunity to be part of a team of science photographers on assignment in waipa. Despite the benefits from biodiversity, todays threats to species and ecosystems are increasing day by day with alarming rate and virtually all of them are caused by human mismanagement of. Clearcutting forests to create fields, filling in wetlands to build houses, and creating dams that change river flow are all examples of habitat destruction. First, it is rare that humans intend to make a species go extinct or to threaten biodiversity in some other way.
This diversity includes all the variations that exist in all levels of biological organization. It is the natural wealth of the earth, which supplies all our food and much of our shelter and raw materials. The year 2010 has long been seen as an end goal, a time when we could look back and say, yes, weve done it that biodiversity, life on earth, is no longer threatened. The year 2018 marks the 25 th anniversary of the entry into force of the convention on biological diversity.
It is the number of different species of plants, animals, and microorganisms. Threats to biodiversity 6 major loss of biodiversity. Freshwater biodiversity is the overriding conservation priority during the international decade for action water for life 2005 to 2015. The loss of biodiversity is dangerous and its consequences are immediate. What is the 4 point strategy to restoring biodiversity worldwide. While being an environmentalist, one has to take equal care of the fauna as one cares for the flora.
A free powerpoint ppt presentation displayed as a flash slide show on id. Biodiversity definition biodiversity is the variation among living organisms from different sources including terrestrial, marine and desert ecosystems, and the ecological complexes of which they are a part. The growth of human populations, consumption levels, and mobility is the root of most of the serious threats to biodiversity today. Threats to biodiversity the following pages illustrate the benefits of highlighting important words and ideas. Threats to biodiversity threats tropical rainforests. Sep 07, 20 contents introduction threats to biodiversity habitat loss poaching manwildlife conflicts importance of biodiversity questions 3. Apr 17, 2015 through my case study of four endangered mammals, the blackfooted ferret, golden tamarin monkey, tasmanian devil, and saiga antelope, i was exposed to specific examples of the above which led me to further my understanding of threats to global biodiversity loss. Extinction is a natural event and, from a geological perspective, routine. Coral reefs support more species per unit area than any other marine environment, including about 4,000 species of fish, 800 species of hard corals and hundreds of other species. We are proud to the achievements that the nepal has made in conserving its biodiversity. While learning about the negative impacts of humans on biodiversity, please keep a few things in mind.
Biodiversity threats weston w sechrest,university of virginia, charlottesville, virginia, usa thomas m brooks, center for applied biodiversity science conservation international, washington dc, usa any direct or indirect human activity that threatens the planets biological diversity in the. Biodiversity describes the richness and variety of life on earth. Threats to biodiversity come from many sources, most human but some natural. The productivity of agricultural ecosystems depends on numerous species, such. Biodiversity is a reservoir of resources for the manufacture of food, cosmetic products and pharmaceuticals. Box 50 2department of natural resource management, adigrat university, ethiopia abstract. Values of biodiversity, threats to biodiversity free download as powerpoint presentation. The biggest threats to biodiversity are exploitation and habitat destruction. Jun 24, 2015 the antarctic and southern oceans are teeming with life, yet protection measures are weak as the continent faces increased threats from fishing, tourism and science programs, according to a report. The importance of various threats to the indigenous crayfish populations of in. Threats to aquatic biodiversity threats to freshwater species 20% of freshwater fishes extinct or in serious decline extinctatrisk salmonsteelhead runs outnumber healthy by 3. Although we still have much to learn about the often complex function of ecosystems, and about which species.
We document threats to global freshwater biodiversity under five headings. Transitioning from fossil fuels to renewable energy is fundamental for halting anthropogenic climate change. In discussing threats to biodiversity it is important to keep in mind that, behind these direct drivers of biodiversity loss, there are a number of indirect drivers that interact in complex ways to cause humaninduced changes in biodiversity. Areas that concentrate on rare and potentially endangered species. They include demographic, economic, sociopolitical, cultural, religious, scientific and technological. The indo myanmar hotspot is one of the most globally threatened biodiversity hotspots and likely to lose a large proportion of plants and vertebrates through overexploitation and continuing forest loss tordoff et al. Biodiversity conservation provides substantial benefits to meet immediate human needs, such as clean, consistent water flows, protection from floods and storms and a stable climate. The year is also coincide with the adoption of the convention by nepal.
We document threats to global freshwater biodiversity under. After a discussion of, inter alia, the main threats to biodiversity, the. Michael scott usgs, idaho cooperative fish and wildlife research unit, university of idaho. The average rate over the past 200 my is 12 species per year, and 34 families per my. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. From threat to action 3 preface the research reported here was undertaken as part of the rubicode project rationalising biodiversity conservation in dynamic ecosystems.
Here are biodiversity s biggest threats, and what we can do to fight them. Gibbs background although species extinctions are part of the evolutionary process, current extinction rates are much greater than at any time in the last several million years. Ppt threats to biodiversity powerpoint presentation free. Biologists estimate that species extinctions are currently 500 times the normal, or background, rate seen previously in earths history.
Biodiversity can be measured through the use of quantitativeindicators, although no single unified approach exists. Coral reefs are some of the most diverse and valuable ecosystems on earth. Human activities are causing a loss of biological diversity among animals and plants globally estimated at 50. Nearly 45,000 species of plants and twice as many of animals have been recorded from india. Importance of biodiversity list of high impact articles. There are all sorts of languages, body types, places we live and so on. We now know that most species that have ever lived have gone extinct. What is happening to marine biodiversity and how do we know. Map local ecosystems, and locate and protect endangered ecosystems as possible, 15. Importance, threats, and solutions 141 extinction due to the fact that lim ited distribution puts most or all of a population at risk to environmental stresses simultaneously gaston, 1998 and also limits the ability of a. In 2002, governments set 2010 as a deadline to achieve a significant reductionin the rate of loss of biodiversity for reducing poverty. Having described the legislative framework the report will then give a brief portrait of some of irelands more important habitats as well as elements of her flora and fauna.
After watching the climate change video in this tutorial, your friend says to you hmmin terms of global change, i always thought that the biggest threat to biodiversity was the amount of carbon dioxide co2 that humans were adding to the atmosphere. Our biodiversity is very important to the wellbeing of our. What are the important considerations in choosing a way forward. Excerpt from a textbook chapter on threats to biodiversity adapted from. Biodiversity and threats to it biodiversity and threats to it 4. With threats and importance essay 3 300 words biodiversity is the variability or the diversity of the different species of life forms. Biodiversity is the amount of variety of life on earth. Conservation of biodiversity and ecosystem services in europe. It includes organisms from earths vastly different ecosystems, including deserts, rainforests, coral reefs, grasslands, tundra, and polar ice caps. Such threats to biodiversity may cause the extinction of many species.
That is what makes our country one of the 12 mega diversity countries of the world. The main dangers worldwide are population growth and resource consumption, climate change and global warming, habitat conversion and urbanisation, invasive alien species, overexploitation of natural resources and environmental degradation. Crops livestock, fishery, and forests are a rich source of food. Posted in biology ppt, ecology, ecology ppt, environmental science and tagged biodiversity destruction ppt, causes of biodiversity degradation ppt, ecology ppt, loss of biodiversity, threats to biodiversity. Once a forest is cleared completely, it takes many years to revegetate, and is never the same ecosytem that it was prior to clearing.
Biodiversity and conservation although india h as only 2. Consensus statement three the impact of biodiversity on any single ecosystem process is nonlinear. Major threats biodiversity is under serious threat as a result of human activities. Biodiversity, which literally means the diversity of life, refers to the variety of life forms on earth. Biodiversity is vital to keep all life on earth healthy, balanced and thriving. Download limit exceeded you have exceeded your daily download allowance. Biodiversity is a fragile thing, susceptible to all sorts of threats. Genetic diversity is of fundamental importance not only as. What are the threats to biodiversity what are some tools to address the threats. Maintaining the connectivity of the landscape could offset their impacts on biodiversity. Biodiversity also underpins ecosystem function and the provision of ecosystem services.
Plants and animals are even more diverse with respect to their numbers. The current high rates will cause a precipitous decline in the biodiversity of the planet in the next century or two. Among the shared threats identified throughout the report, landuse change is identified as an important driver of biodiversity loss with concurrent implications for many of our most pressing public health challenges. If the current threats to rainforest continue at their same pace, these rich biodiversity areas will be completely destroyed within the next 100 years. Much has been published on the subject since its first appearance at the national forum on biodiversity in september.
For example, the richness of diversity allows medicines and foods to be naturally available. The corridor concept proposes that refuges connected by corridors will have higher immigration rates than isolated patches of natural habitat. In recent years, killing of these animals is widely observed and has. In contrast, the continuing loss of biodiversity on a. In contrast, the continuing loss of biodiversity on a global scale represents a direct threat to our health and wellbeing. Current extinction rates are about 2,500 times the background rate at. Also, about 30 mammalian and bird species are used extensively, but just 15 of them account for over 90 per cent of global livestock production.
Biodiversity is also important for enhancing the resilience of poor farmers and indigenous peoples to climate change, pests, diseases and other threats. Even as it supports all life on earth it is constantly facing threats and damage that is almost impossible for our multiple ecosystems to recover from. Biodiversity is important, more than just the i want my children to enjoy it reason. The importance of biodiversity and ecosystems in economic growth and equity in. The earth is populated by an incredible number of different living creatures. Pdf biodiversity is the variety of different forms of life on earth, including the. What do conservationand sustainable usereally mean. Threats of woody plant species diversity and their conservation techniques in ethiopia wondie mebrat1 and temesgen gashaw2 1department of biology, adigrat university, ethiopia.
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