In a new paper published in The Quarterly Review of Biology (September 2017), researchers from the University of Arizona have estimated that there are roughly 2 billion living species on Earth, over a thousand times more than the current number of described species.
How much biodiversity is on earth?
Biodiversity refers to every living thing, including plants, bacteria, animals, and humans. Scientists have estimated that there are around 8.7 million species of plants and animals in existence. However, only around 1.2 million species have been identified and described so far, most of which are insects.
What is the estimated biodiversity?
Global biodiversity is the measure of biodiversity on planet Earth and is defined as the total variability of life forms. More than 99 percent of all species that ever lived on Earth are estimated to be extinct.
|Global estimate (described + undescribed)||–|
What is the estimated number of species on Earth?
Summary: About 8.7 million (give or take 1.3 million) is the new, estimated total number of species on Earth — the most precise calculation ever offered — with 6.5 million species on land and 2.2 million in oceans.
What are some of our current estimates of biodiversity?
Current estimates of global species diversity vary between 2 million and 100 million species, with a popular estimate of somewhere near 13 to 14 million. … Only roughly 1.5 million species have been described, and only 40,000 to 50,000 species have had their conservation status assessed.
What percentage of the total 5% biodiversity of the earth is found in India?
India is one of 17 mega-biodiverse countries in the world. With only 2.4 percent of the earth’s land area, it accounts for 7-8 percent of the world’s recorded species.
What are the 3 types of biodiversity?
Usually three levels of biodiversity are discussed—genetic, species, and ecosystem diversity.
How many species of Arthropoda are on Earth?
There are over 800,000 named species in the Phylum Arthropoda, named from the Greek arthros (= jointed) and poda (= foot), including the familiar arachnids, crustaceans, and insects, together with a host of less familiar critters, like centipedes, millipedes and sea spiders.
How is biodiversity distributed across the planet?
Biodiversity is unevenly distributed across the planet. A range of factors contribute to this distribution, including the global climatic gradient, the current and historical distribution of land masses, and geographical barriers, such as mountains.
How many species are there on Earth 2021?
We have identified and described over two million species on Earth. Estimates on the true number of species varies. The most widely-cited estimate is 8.7 million species (but this ranges from around 5 to 10 million).
What is an example of micro organism diversity?
Microbial diversity can be defined as the range of different kinds of unicellular organisms, bacteria, archaea, protists, and fungi. Various different microbes thrive throughout the biosphere, defining the limits of life and creating conditions conducive for the survival and evolution of other living beings.
How many biodiversity are there in India?
Which is the biodiversity hotspot in India? India hosts 4 biodiversity hotspots: the Himalayas, the Western Ghats, the Indo-Burma region and the Sundaland (Includes Nicobar group of Islands). These hotspots have numerous endemic species.
How many species have not been discovered?
Scientists figure there are still over five million species waiting to be found. The table below lists how many undiscovered species exist for each type of plant and animal. So far, zoologists have reported on nearly all the mammal and bird species currently living on earth.