INTRODUCTION CAUSES OF BIODIVERSITY LOSSES • There are four major causes (called “The Evil Quartet”) of biodiversity losses: •Habitat loss and fragmentation, •over exploitation, •alien species invasions and •co-extinction. But biodiversity is much more than species diversity in wild lands, and biodiversity loss is much more than species extinction. How biodiversity is measured? Further human actions, such as deforestation, deep-ocean fishing, overharvesting of plant and animal species, as well as war and conflicts, also contribute to biodiversity loss. Introduction The term Biodiversity was first coined by Walter G. Rosen in 1986. Fast facts By 2025, half of the world’s population will be living in water-stressed areas. Ml Books International - Ips. Extinction is a term used to refer to the loss of species which are found on the earth’s surface. Biodiversity also underpins ecosystem function and the provision of ecosystem services. When extinction occurs it is normally irrevocable and the particular species disappear for ever meaning that some biological aspect of the Earth is lost. 1 Introduction 17 1.1 Background 17 1.1.1 Context 17 1.1.2 Current state of play 18 1.1.3 The debate on economics and biodiversity in a nutshell 20 1.2 Current research on biodiversity loss 21 1.2.1 Latest biodiversity research and models 21 1.2.2 Biodiversity frameworks and assessments 23 1.3 Approach 25 2 Direct causes of biodiversity loss 29 Essay on Biodiversity and conservation 2020| Loss of biodiversity and threat to biodiversity essay, biodiversity essay 150 words, 250, 500, 750 and 1000 word essay on biodiversity and conservation ... (Introduction part) Biodiversity is the variety of living organisms and their interactions with each other, that is, life on Earth. The fossil records show that since life originated on earth, about four million years ago, the vast majority of species which existed are now extinct. BIodIveRSIty loSS IS A development ISSue A RAPID REIEW OF EIDENCE 6 www.iied.org Introduction Biodiversity is a scientific term describing the variability of life on Earth (wild and cultivated). Biodiversity loss can have significant direct human health impacts if ecosystem services are no longer adequate to meet social needs. Take the Great Barrier Reef for example. Presentation of biodiversity 1. Cambridge University Press. Therefore, declining biodiversity, or biodiversity loss, is a major concern in our modern society (Shah, 2014). ... (SDGs) including climate change, poverty and inequality, and ecosystem degradation and biodiversity loss, with case studies to guide and challenge our thinking. Indirectly, changes in ecosystem services affect livelihoods, income, local migration and, on occasion, may even cause or exacerbate political conflict. Loss of Biodiversity. So to halt and even reverse this worrying trend in biodiversity loss, these are the things we need to tackle. An example of biodiversity loss was the extinction of over 200 species of cichlids in Lake Victoria; this was caused by the introduction of the Nile Perch as well as increased agriculture and fishing. Biodiversity is the variety of species present in the biosphere; the main goal of conservationists is to preserve biodiversity. There is massive extinction from human activity. Rise in population growth levels has proven to be a problem in our ecosystem. Biodiversity is being lost at rates that far exceed any in recent geological history. For example, fish stocks are dwindling, forest loss is resulting in the loss of many species, land and other resources are being misused, leading to various long terms costs. ISBN 978-0521588669. The loss of biodiversity directly influences the social life of the country possibly through influencing ecosystem functions (energy flow and biogeochemical cycle). Biodiversity is the variety of species used in both the production and consumption of goods and services. ISBN 978-1632390943. Soon after the 1992 Earth Summit in Rio de Janeiro, interest in understanding how biodiversity loss might affect the dynamics and functioning of ecosystems, and the supply of goods and services, grew dramatically. A decrease in plant production. Biodiversity is the variety of species present in the biosphere; the main goal of conservationists is to preserve biodiversity. Today, 31% gymnosperms,32%amphibians,12% bird species and 23% of mammals face the threat of loss of biodiversity. Climate change, the biggest threat to biodiversity, is a huge source of biodiversity loss through habitat loss, lack of livable and thrivable environments. Biodiversity Loss in the 21st Century. The concept of “biodiversity” is the “big picture” view of the flora and fauna of the earth. Causes of Loss of Biodiversity A. HABITAT LOSS AND FRAGMENTATION •It is the … An example of biodiversity loss was the extinction of over 200 species of cichlids in Lake Victoria; this was caused by the introduction of the Nile Perch as … The role of ICZM The ongoing neglect of natural resources and ecological interrelationships resulted in a disastrous development, which can hardly be reversed. The loss of fisheries in the Black Sea after the introduction of Mnemiopsys is estimated at hundreds of millions of dollars every year. Bio What? More food production and livestock are needed for this rise in the population. 10. Loss of Biodiversity Essay – 2 (300 Words) Extinction is an inexhaustible part of the nature, for example dinosaurs are extinct beings. Introduction to Biodiversity. Today the earth is facing a loss of biodiversity at rapid rates. 4.1 INTRODUCTION. This article throws light on the ten major causes for the loss of biodiversity, i.e, (1) Destruction of Habitat, (2) Hunting, (3) Exploitation of Selected Species, (4) Habitat Fragmentation, (5) Collection for Zoo and Research, (6) Introduction of Exotic Species, (7) Pollution, (8) Control of Pests and Predators, (9) Natural Calamities, and (10) Other Factors. biodiversity loss and are able to counteract the loss of biodiversity-related cultural values, biological species and ecosystems in an effective way. 2. ISBN 978-1853836992. Biodiversity Loss: Economic and Ecological Issues. Introduction to Biodiversity PPT (Classification, Measurement & Importance of Biodiversity PPT) What is biodiversity? Routledge. of ecos ystem s ervice s to humans. ... Biodiversity loss and species extinction The U.N.’s Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services released a summary of far-reaching research on the threats to biodiversity on May 6. What are the different types of biodiversity? Introduction An Introduction to Ecosystem Degradation & Biodiversity Loss. Declining biodiversity lowers an ecosystem’s productivity (the amount of food energy that is converted into the biomass) and lowers the quality of the ecosystem’s services. Human population growth is the first leading cause of biodiversity loss. But their end was due to the process of natural development in which more successful species replaced the less successful species. Alexander Wood (2000). 1. Key Points. What are the different levels of biodiversity? The biosphere comprises of a complex collections of innumerable organisms, known as the Biodiversity, which constitute the vital life support for survival of human race. The first ever assault on biodiversity dates back to the inception of human society. Biodiversity can be measured through the use of quantitativeindicators, although no single unified approach exists. Neil Griffin, ed. Moreover, if the invasive species are able to adapt to the new conditions properly, they may also displace local species. The Root Causes of Biodiversity Loss. Another problem that causes the loss of biodiversity is to be attributed to the introduction in the environment of genetically modified organisms (GMO) that are also known as transgenic organisms. •Biodiversity is the variety of all life forms: the different plants, animals and micro-organisms, their genes and the ecosystems of which they are a part. Although biodiversity covers variability in natural systems at all levels, from the genetic, through organismal to ecosystem, biodiversity loss metrics are most often expressed at the organismal level, e.g. Adverse Impacts of Loss of Biodiversity. Biodiversity loss has a negative impact on our societies; it negatively affects or contributes to the health of individuals, the climate, natural resources, pollution, poverty and the extinction of species. biodiversity It is a key instrument to promote sustainable development and tackle the global loss of biodiversity. In the past years, biodiversity has been increasing faster than at any other time in human history. The Effects Of Foreign Species Introduction On An Ecosystem... native species. Biological diversity, or biodiversity, appears to be in trouble, ... biodiversity loss i s important for ensuring the continued flow . Since 1995, the Great Barrier Reef has lost half, yes 50%, of it’s coral reefs through a … Alpha diversity, Beta diversity, Gamma diversity, What are the uses of biodiversity? B. Biodiversity is defined by International Convention on Biological Diversity as “the variability among living organisms for all sources, including terrestrial, marine, and other aquatic ecosystems, and the ecological complexes of which they are part”(Baumgartner, 2001). in terms of species richness and extinctions. Biodiversity Diversity = Variety. A diverse ecosystem, with its variety of life forms and individual species, provides resources to sustain mankind’s life and health, 1 while the loss of biodiversity may reduce well-being. The introduction of invasive species can cause serious problems to the natural local ecosystems since they can carry diseases that may harm local species. Major international The loss of biodiversity is increasing. (2015). This be easily understood by observing detrimental effects of global warming and acid rain which cause an unfavorable alteration in logical processes. It is mainly caused by industrialization, population, and urbanization. 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