Edited Invalid date
47.2 Value of Biodiversity
Africa, Indonesia, the coast of California, and the Great Barrier Reef of Australia are some of the places that have a high level of biodiversity.
The values of biodiversity are compared.
There is a desire to reverse the trend toward extinction.
It's important to educate people about the value of biodiversity.
Direct value is defined as the economic value that a species provides to humans.
The key direct values provided by various species are discussed here.
Humans have a significant monetary value to many wild species.
The management of these species is a challenge.
Humans associate the worth of a resource with its monetary value.
Medicines derived from living organisms are a good example.
Most of the prescription drugs used in the United States are derived from living organisms.
A tropical plant that has provided us with useful medicines is the rosy periwinkle.
The survival rate for childhood leukemia has gone from 10% to 90% because of these drugs.
Hundreds of new drugs are yet to be found in tropical rain forests, and may have an economic value of over 100 billion dollars.
The antibiotic penicillin is derived from a fungus.
These drugs are indispensable in the treatment of infections.
There is no cure for leprosy.
Scientists discovered that the bacterium that causes leprosy can be found in the ninebanded armadillo.
It may be possible to find a cure for leprosy with a source for the bacterium.
Crops such as wheat, corn, and rice have been derived from wild plants that were modified to increase their yields.
The same high yield, genetically similar strains are grown all over the world.
When rice crops in Africa were being devastated by a virus, researchers grew wild rice plants from thousands of seed samples until they found a gene for resistance to the virus.
The wild plants were used in a breeding program to create high-yield rice plants.
Rice cultivation in Africa could have collapsed if the variety of wild rice had become extinct.
Natural pest controls are better than chemical pesticides.
Farmers began to use the natural predator of the brown planthopper when it became resistant to pesticides.
The economic savings were over a billion dollars.
Cotton growers in Canete Valley found that pesticides were no longer effective against the cotton aphid because of the resistance that had evolved in the population.
Researchers have identified the aphids' natural predators and are using them.
Plants rely on animals for pollination.
Colony collapse disorder has wiped out more than 30% of the commercial honeybee population in the United States.
More than 130 different types of fruits and vegetables are supported by honeybee pollination, according to the USDA.
To find honeybees that are resistant to the mites, researchers must look to the wild populations.
Humans have been successful in growing crops, domesticating animals, and growing trees.
A limited amount of resources has been provided by the growing of fish and shellfish for human consumption.
Most freshwater and marine harvests are dependent on catching wild animals, such as fish, crustaceans, and mammals.
The aquatic organisms are an important source of diversity.
Wild fruits and vegetables, skins, fibers, beeswax, and seaweed are some of the products that can be found in the environment.
The economic value of wild pigs in the diet of native hunters in Sarawak, East Malaysia, was estimated by researchers at 40 million dollars per year.
Many trees are felled in the natural environment for wood.
If the forest is used for fruit and rubber production, it is worth more than if it is used for timber production.
Fruit and latex can be brought to market for a long time.
None of these products, including timber, can be sustainable once the trees are cut down.
All of the wild species have a role to play.
It is more beneficial to save large portions of their ecosystems if we want to preserve them.
The indirect value of the ecosystems is based on the services they provide.
The provision of fresh water, biogeochemical cycles, and waste recycling have indirect values.
A walk in the woods or time spent at the local park can have a calming effect on many people.
Human health has been proven to be improved by re-connecting with nature.
Our survival depends on the functions that the ecosystems perform.
We depend on these cycles for fresh water, the removal of carbon dioxide from the atmosphere, and excess soil nitrogen.
When human activities upset the natural workings of biogeochemical cycles, the environmental consequences can result in negative consequences for humans.
Our current technology can't replicate the biogeochemical cycles.
Dead organic matter and other types of waste are broken down by decomposers, which are used by the producers in the ecosystems.
We dump millions of tons of waste material into the natural world each year.
Our planet would soon be covered in waste if it weren't for decomposition.
We can build sewage treatment plants, but they are expensive, and few of them break down solid waste completely.
It is cheaper and more efficient to provide plants and trees with partially treated wastewater.
Heavy metals and pesticides can be broken down by biological communities.
A value of 50,000 dollars perhectare (100 acres) was assigned to the ability of natural areas to purify water and take up pollutants, according to a review of wetlands in Canada.
Few organisms are able to live in a salty environment.
Humans use fresh water in many ways.
A large diversity of species we can use as a source of food can be found in rivers and lakes.
There is no substitute for fresh water.
The average cost of fresh water acquired via the water cycle is four to eight times the cost of desalinated water.
They release the water at a regular rate after soaking it up.
When rain falls in a natural area, plant foliage and dead leaves reduce its impact, and the soil slowly absorbs it, if it has been aerated by soil organisms.
The possibility of flooding is reduced by the water holding capacity of the forests.
The value of a marshland outside Boston, Massachusetts, is 72,000 dollars perhectare per year, due to its ability to reduce floods.
After the rains have stopped, forests release water slowly.
At the end of the dry season, rivers from agricultural lands release between three and five times as much water as at the halfway point.
Retaining soil is one of the ways intact ecosystems prevent soil erosion.
Following the destruction of the environment, the importance of this environment is observed.
The world's largest dam, the Tarbela Dam, in Pakistan, is losing its storage capacity sooner than expected due to the build up of silt behind it.
The Philippines exported 100 million dollars worth of seafood each year.
Mangroves are a nursery for the sea and are being smothered by silt carried down rivers.
Deforestation is one of the reasons that most coastal ecosystems are not as plentiful as they used to be.
During the summer, trees provide shade and reduce the need for fans and air conditioners.
Shade trees can reduce energy bills by up to 20%.
forests take up carbon dioxide and restore the climate.
The leaves of trees use carbon dioxide when they are small, the bodies of the trees store carbon, and oxygen is released as a by-product.
Carbon dioxide is released when trees are cut and burned.
The reduction in forests reduces the amount of oxygen in the air.
The amount of solar radiation retained on the Earth's surface is affected by the change in atmospheric gases.
Changing the Earth's climate is being caused by large-scale deforestation.
Millions of people enjoy vacations in the United States.
Billions of dollars are spent each year on fees, travel, lodging, and food.
Many tourists want to go fishing, whale watching, hiking, birdwatching, and the like.
Florida's economy gets 67 billion dollars a year from tourism, with over 86 million tourists a year.
Others want to experience the beauty and tranquility of a natural environment.
Guided tours of forests are more profitable than destroying them.
Changes in biodiversity can have a significant impact on the environment.
Researchers want to know if a high degree of biodiversity also helps function more efficiently.
Researchers sowed plots with seven levels of plant diversity in a Minnesota grassland habitat to test the benefits of biodiversity.
Increasing diversity improves the performance of the system.
Resource use in more diverse plots was shown to be greater in California.
An increase in diversity among four groups was tested by another group of experimenters.
As diversity increased, the rate of photosynthesis increased.
A computer simulation shows that the response of a forest to elevated carbon dioxide is dependent on species diversity.
A community composed of nine tree species had a 30% greater amount of photosynthesis than a single species.
The higher the number of plant species, the higher the rate of photosynthesis.
There are more studies that need to be done to find out if biodiversity maximizes resource acquisition and retention.
Changing environment and invasions by other species make diverse ecosystems better able to survive.
Review flashcards and saved quizzes
Getting your flashcards
Privacy & Terms