Loss of forest cover, coastal wetlands, other ‘wild’ uncultivated areas, and the destruction of the aquatic environment exacerbate the genetic erosion of agrobiodiversity. Fallow fields and wildlands can support large numbers of species useful to farmers.
Major causes of agro-biodiversity loss include direct destruction, conversion or degra- dation of agroecosystems, over-exploitation, habitat disturbance, pollution, intro- duction of exotic species, selection pressure from human activities, introduction of new technologies and technological innovation like genetic
Secondly, how does loss of wild varieties affect food production? Our crops and domestic animals therefore have little variation. If a disease or pest attacks them and they are badly affected, the whole crop may be lost, reducing our food security. The loss of wild varieties threatens our food security because the pool of different genes in these wild populations has been lost.
Furthermore, why is agrobiodiversity important?
Agrobiodiversity plays an important role in sustainable development such as provides many environmental services to animals, plants, humans and other species. Agrobiodiversity contribute in various ways to human health and nutrition by providing food and access to traditional medicines.
How many edible plants are there in the world?
There are over 20,000 species of edible plants in the world yet fewer than 20 species now provide 90% of our food. However, there are hundreds of less well known edible plants from all around the world which are both delicious and nutritious.
What is the leading cause of biodiversity loss?
Habitat destruction is a major cause for biodiversity loss. Habitat loss is caused by deforestation, overpopulation, pollution and global warming.
What are the long term effects of loss of biodiversity?
These include water, soil formation and protection, pollution breakdown and absorption, climate stability and recovery from natural disasters. With the loss of biodiversity we have no access to these natural services.
What are the negative effects of loss of biodiversity?
At higher levels of extinction (41 to 60 percent of species), the impacts of species loss ranked with those of many other major drivers of environmental change, such as ozone pollution, acid deposition on forests, and nutrient pollution.
What are the consequences of loss of biodiversity in a region?
The effects of loss of Biodiversity are: – Decline in plant production/Decline in number of animal species . Due to the loss of biodiversity the natural habitat of many animals become void and due to this the will drive towards death due to impaired basic needs and plants also became extinct or lower in number .
Who is affected by biodiversity loss?
4.4 Overall, the main factors directly driving biodiversity loss are: habitat change, such as fragmentation of forests; invasive alien species that establish and spread outside their normal distribution; overexploitation of natural resources; and pollution, particularly by excessive fertilizer use leading to excessive
How can you increase genetic diversity in a population?
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism’s offspring).
Why is loss of genetic diversity a concern?
Without genetic variation, a population cannot evolve in response to changing environmental variables and, as a result, may face an increased risk of extinction. For this reason, an endangered species with low genetic variation may risk extinction long after its population size has recovered.
How many plant species do humans eat?
Scientists estimate that there are more than 400,000 species of plants on earth, at least half of which are edible for humans. Indeed, it is entirely possible that we are capable of eating 300,000 plant species.
Why do farmers care about biodiversity?
Biodiversity is the origin of all species of crops and domesticated livestock and the variety within them. Maintenance of this biodiversity is essential for the sustainable production of food and other agricultural products and the benefits these provide to humanity, including food security, nutrition and livelihoods.
Can we live without agriculture?
Shampoo, shoes, tires and paper are all byproducts of agriculture. Beyond food and many other products we use every day, a day without agriculture would put more than 22 million people out of work without their farm or farm-related job, including the farm families who operate almost 99 percent of U.S. farms.
Why is agriculture important today?
Agriculture is the main source of national income for most developing countries. However, for developed countries, agriculture contributes a smaller percentage to their national income. The agricultural sector provides fodder for domestic animals. The cow provides people with milk which is a form of protective food.
What does agrobiodiversity mean?
Otherwise known as agrobiodiversity, agricultural biodiversity is a broad term that includes “the variety and variability of animals, plants and micro-organisms at the genetic, species and ecosystem levels that sustain the ecosystem structures, functions and processes in and around production systems, and that provide
What is agrobiodiversity conservation?
Agrobiodiversity conservation. Agrobiodiversity is a broad term that encompasses all components of biological diversity of relevance to food and agriculture as well as the larger agricultural ecosystems that contribute to production. Agrobiodiversity is the source of genetic material that is vital to future generations
What is biological diversity and why is it important?
Biodiversity boosts ecosystem productivity where each species, no matter how small, all have an important role to play. For example, A larger number of plant species means a greater variety of crops. Greater species diversity ensures natural sustainability for all life forms.