May 09, · Save Earth Essay 3 ( words) Earth is the most precious thing in this universe having oxygen and water, essential things for life. The natural resources found on earth are deteriorating day by day because of various wrong practices of human beings Essay about lockdown story analysis essay for the story of an hour. funny chinese essays what is coronavirus essay in urdu in pdf about english 19 Essay covid. Biometric case study. Relevant coursework examples. Essay about autobiography of a pencil for class 5, conclusion social work essay Human extinction is the hypothetical end of the human species due to either natural causes such as an asteroid impact or large-scale volcanism, or anthropogenic (human) causes, also known as blogger.com the latter, some of the many possible contributors include climate change, global nuclear annihilation, biological warfare and ecological blogger.com scenarios center on emerging
Essay on Save Earth for Children and Students
With an estimated 1, species facing extinction over the next century, and many more suffering from severe habitat loss, essay on extinct species, the impulse to protect birds must be universal. Elected officials face competing constituent pressures; corporate executives must answer to shareholders; working folks have more immediate economic concerns. If we want policy makers and the public to take conservation seriously, then perhaps we must offer credible research showing that healthy bird populations are essential to human welfare.
Birds keep farmers in business. They protect our drinking water by preventing erosion. They slow the spread of disease. They keep the furniture industry supplied with timber. They provide critical environmental data. The list continues ad infinitum. Whatever survives really is a function of our activities.
The past decade has seen an explosion of sophisticated research—and the result is a strong body of evidence debunking the myth that bird protection is an unaffordable luxury.
When the Mormons settled Utah in the 19th century, their first two crop seasons were destroyed by western crickets. Then sea gulls came by the hundreds and thousands, and, before the grain could be entirely destroyed, devoured the insects, so that the fields were freed from them. The settlers regarded this as a heaven-sent miracle. Modern history is filled with anecdotal examples of birds saving potato fields, fruit orchards, and cranberry bogs from insect devastation.
Borers are the bane of coffee farmers, many of whom are small landholders in developing countries. The tiny insects take over individual berries and spend almost their entire life cycles inside, rendering those beans unsellable, essay on extinct species. There are no safe pesticides that kill the insects, and attempts to control them with parasitic wasps show, at best, limited success.
What helps save Jamaican farmers from ruin are neotropical migrants like the black-throated blue warbler, whose slate-blue males and olive-green females hop and fly through vegetation foraging for insects, and the American redstart, known locally as the butterfly bird for its flitting motion and black-and-orange male plumage.
Johnson and his team set up nylon nets to keep the birds off individual plants or small clusters. They then compared those plants to the ones birds could reach. Sure enough, essay on extinct species, the netted-off plants had measurably lower crop yields. Kew Park now works with Jamaican forestry officials to plant indigenous shade trees like mahogany and almond, which provide warbler habitat.
During early mornings, says co-owner Gina Green, essay on extinct species, the woods come alive with song. Insect-eating birds protect apple orchards in the Netherlands and safeguard Missouri Ozarks white oaks, whose lumber is highly sought by furniture makers. And they reduce pest levels at organic wineries. Ornithologist Julie Jedlicka, a post-doctoral fellow at the University of California-Berkeley, put up nest boxes at two Northern California vineyards. With the approval of the U.
Department of Agriculture, she simulated a pest outbreak by pinning insect larvae to pieces of cardboard and placing them between rows of grapes. The boxes attracted insect-eating birds, which in turn devoured 3, essay on extinct species. The bluebirds appear to consume blue-green sharpshooters, insects with piercing, sucking mouthparts that easily spread bacteria among plants. Birds stimulate economies just by being beautiful. Take a look at Magee Marsh, a 2,acre wildlife refuge on the Ohio shore of Lake Erie.
A stopover for neotropical migrants, which rest and refuel before crossing the lake, the marsh attracts essay on extinct species thanbirders each year. Along with their field glasses, these visitors bring their credit cards. Philip Xie, a professor and tourism researcher at Bowling Green State University, essay on extinct species, looked at Magee Marsh and five other Lake Erie birdwatching areas in Ohio.
A ferry service now offers migration cruises. She is married to Audubon field editor Kenn Kaufman. It also includes the fees an innkeeper pays her accountant; the vegetables a restaurant buys from local farmers; the movie tickets a park ranger buys on his day off.
By preserving wildlife habitat and focusing on hospitality, many towns along Lake Erie have developed distinct personalities. In an economic analysis released inthe U. Sekercioglu, the Utah ornithologist, emphasizes the importance of birding in developing countries, where other tourism jobs tend to be menial and low paying.
By contrast, he says, indigenous people with a grasp of natural history can make decent money as birdwatching guides, even with only rudimentary English skills.
Measuring the global impact of birding is hardly a new phenomenon. Of course, none of these studies measures the personal benefits that watching a warbler can bring. Studies have shown that spending time in nature improves both essay on extinct species and mental health. Perhaps the least sexy service birds provide is eating dead bodies. Department of Agriculture. Some of that discovery has come the hard way—from a natural experiment playing out today in South Asia. Vultures are particularly valuable in India because Hinduism prohibits the slaughter and consumption of cows.
The livestock, therefore, die naturally, in the open. Then we have people who collect the bones, so there will be no mess around and no stench. Starting essay on extinct species the s the populations of oriental white-backed, essay on extinct species, and slender-billed vultures began to crash. Within a month, they would be dead. Today their numbers have been reduced by 99 percent— Scientists traced the cause to an anti-inflammatory medicine called diclofenac, which is used as a painkiller essay on extinct species aging cows but also triggers fatal kidney disease in old-world vultures.
Inafter a bird-friendly alternative drug was identified, India banned the veterinary use of diclofenac. While some pharmaceutical companies have cooperated, others continue to sell the human formulation in multiple-use vials large enough to medicate a cow.
They have refused pleas by conservationists to sell the drug only in small vials appropriate for human doses. Without vultures around, feral dogs have taken over carcass disposal. With this growing canine population comes more fatal dog essay on extinct species, as well as rabies from bites. Economist Anil Markandya has estimated almost 40 million additional dog bites in India between andresulting in about 48, extra deaths.
But non-scavenging species contribute, too. Its large seeds feed grizzlies and black bears, essay on extinct species. Whitebark pine communities provide habitat for deer, essay on extinct species, elk, and raptors. And because the pines grow all the way up to the treeline, they are effective at protecting drinking-water supplies. Their presence reduces the danger of avalanche, essay on extinct species.
And their canopy shades the snowpack, ensuring a protracted melt rather than a sudden springtime flush. It then buries the uneaten seeds at the depth and location that the trees often need to reproduce.
The value of the nutcracker is essay on extinct species into sharper focus now that the tree is in danger. In response, the U. Forest Service has been growing rust-resistant whitebark pine seedlings to plant by hand.
This is labor-intensive work: Specially trained climbers must ascend into the canopy twice, first to place animal-proof cages around the cones which need water and nutrients from their parent trees and later to harvest the cones. In nature the seeds would germinate over two years, essay on extinct species, but the forest service speeds the process by specially treating the seeds before they are sown for germination.
Multiply that by about Throughout the world, birds are essential seed dispersers for plants that provide us with food, medicine, timber, and recreation. Among their qualifications: They travel long distances. They assist germination when they eat fruit by removing the pulp and scratching the seed coat.
The birds frequently deposit those seeds in the sunny areas below their perches. While Carson, a biologist, documented the havoc wreaked throughout the food chain, her book is best remembered for its account of how the fight against Dutch elm disease poisoned entire populations of robins as well as 90 other bird species.
More than 50 years later, scientists routinely use birds to gauge the health of ecosystems—and not just for purely biological reasons. Birds often meet the technical criteria, such as sensitivity to environmental changes, essay on extinct species.
Another practicality: Humans have recorded bird populations for generations. They live more than 20 years, are at the top of the food web, and are very territorial. Scientists use bird abundance to measure everything from wetlands health to radioactive contamination. Some of the most innovative work uses birds to study climate change.
On the Crozet Archipelago in the southern Indian Ocean, zoologist Lewis Halsey has placed heart monitors on king penguins to measure how much energy they expend while essay on extinct species for fish. And at Oregon State University, researchers use microphones to mechanically monitor bird songs in the western Cascade Mountains during and before the breeding season.
As the climate starts warming, are we seeing birds arriving earlier? Betts is now working with computer scientists on his campus to create a program that identifies species by call, even in noisy forests.
Betts says the program is too new to offer up much data. Pest control, public health, seed dispersal, ecotourism, environmental monitoring—these are some of the ways birds benefit humans. There are many others:. Burning it is cheap, but it also pollutes and is therefore illegal. An alternative, essay on extinct species, tilling the straw into the soil, can be very expensive.
Fortunately, farmers can enlist help from wintering waterfowl that travel along the Pacific Flyway. By foraging for grain, weeds, and bugs in flooded rice essay on extinct species, birds like mallards help decompose the straw.
This could reduce the need for tillage, providing considerable savings to growers, concluded a study from the University of California-Davis. Farmers would be well advised, the report noted, to flood their fields and create wetlands for these essay on extinct species wayfarers.
Endangered Animals!
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Nov 21, · The inevitability of death is the only constant in life, and percent of all species that have ever lived, as many as 50 billion, have already gone extinct News about Endangered and Extinct Species, including commentary and archival articles published in The New York Times. Guest Essay For the Butterflies — and the Rest of Us Get the huge list of more than Essay Topics and Ideas. Impact of Population Explosion. The human population explosion not only affects humans but also our environment and wildlife. We have seen so many species of birds and animals go extinct because of various factors
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