Navigation Links
How many species on Earth? 8.7 million
Date:8/23/2011

Eight million, seven hundred thousand species (give or take 1.3 million).

That is a new, estimated total number of species on Earth -- the most precise calculation ever offered -- with 6.5 million species found on land and 2.2 million (about 25 percent of the total) dwelling in the ocean depths.

Announced today by Census of Marine Life scientists, the figure is based on an innovative, validated analytical technique that dramatically narrows the range of previous estimates. Until now, the number of species on Earth was said to fall somewhere between 3 million and 100 million.

Furthermore, the study, published today by PLoS Biology, says a staggering 86% of all species on land and 91% of those in the seas have yet to be discovered, described and catalogued.

Says lead author Camilo Mora of the University of Hawaii and Dalhousie University in Halifax, Canada: "The question of how many species exist has intrigued scientists for centuries and the answer, coupled with research by others into species' distribution and abundance, is particularly important now because a host of human activities and influences are accelerating the rate of extinctions. Many species may vanish before we even know of their existence, of their unique niche and function in ecosystems, and of their potential contribution to improved human well-being."

"This work deduces the most basic number needed to describe our living biosphere," says co-author Boris Worm of Dalhousie University. "If we did not know -- even by an order of magnitude (1 million? 10 million? 100 million?) -- the number of people in a nation, how would we plan for the future?"

"It is the same with biodiversity. Humanity has committed itself to saving species from extinction, but until now we have had little real idea of even how many there are."

Dr. Worm notes that the recently-updated Red List issued by the International Union for the Conservatio
'/>"/>

Contact: Terry Collins
tc@tca.tc
416-538-8712
Census of Marine Life
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology news :

1. A new dinosaur species, Pachyrhinosaur lakustai, unveiled from Pipestone Creek, Alberta, Canada
2. Tropical rainforest and mountain species may be threatened by global warming
3. Brown scientist finds coastal dead zones may benefit some species
4. Ecologists say metabolism accounts for why natural selection favors only some species
5. Marine invasive species advance 50km per decade, World Conference on Marine Biodiversity told
6. Marine invasive species advance 50 km per decade, World Conference on Marine Biodiversity told
7. 11,000 alien species invade Europe
8. Snowy owl -- a marine species?
9. Dwarf crocodiles split into three species
10. Researchers create new class of fluorescent dyes to detect reactive oxygen species in vivo
11. Over 1,000 species discovered in the Greater Mekong in past decade
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
How many species on Earth? 8.7 million
(Date:9/16/2014)... Columbia Center for Children,s Environmental Health at the Mailman ... an association between childhood asthma and prenatal exposure to ... products. Results appear online in the journal Environmental ... exposed during pregnancy to higher levels of the chemicals, ... 72 percent and 78 percent increase in risk of ...
(Date:9/16/2014)... 17, 2014)The North American Menopause Society (NAMS) has ... care of midlife womenon everything from hot flashes ... American Menopause Society Recommendations for Clinical Care of ... Society,s journal Menopause . This is the ... care of midlife women freely available to all ...
(Date:9/16/2014)... "molecular brakes" that time the generation of important cells ... cells" translate sound waves into electrical signals that are ... If the arrangement of the cells is disordered, hearing ... will be published in The Journal of Neuroscience ... Hey2 act as brakes to prevent hair cell generation ...
Breaking Biology News(10 mins):Phthalates heighten risk for childhood asthma 2Phthalates heighten risk for childhood asthma 3Hey1 and Hey2 ensure inner ear 'hair cells' are made at the right time, in the right place 2
... Suppressing a cellular cleanup-mechanism known as autophagy can ... neural degeneration. In an upcoming issue of Autophagy, scientists ... the first time that the opposite is true as ... flies prevented the age-dependent accumulation of cellular damage in ...
... lifeless lakeshore lapped by waves, floating algae learned to survive ... the Earth into a green paradise. The secrets of ... to the sequencing of a modern descendent of these first ... on recently exposed shorelines, quickly fruits, and then dies. ...
... collection of genes the genome of a ... link between single-celled algae and flowering plants. Just ... understand human genomic history, the sequencing of plant genomes ... kingdom, according to Ralph S. Quatrano, Ph.D., the Spencer ...
Cached Biology News:Aging gracefully requires taking out the trash 2Aging gracefully requires taking out the trash 3Moss genome shows how plants invaded the land and learned to survive heat and drought 2Moss genome shows how plants invaded the land and learned to survive heat and drought 3WUSTL researchers spearhead key genome initiative 2WUSTL researchers spearhead key genome initiative 3WUSTL researchers spearhead key genome initiative 4
(Date:9/17/2014)... GLASGOW, Scotland , September 17, 2014 ... a new mode of action from a ... a decade  MGB Biopharma, a ... of anti-infectives, announces today that it has ... of its lead antibacterial, MGB-BP-3, against a ...
(Date:9/16/2014)... Washington, USA (PRWEB) September 16, 2014 ... to create the features that we desire in optical ... Center at Montana State University. “As we explore surfaces ... Some of those lessons were presented in San Diego ... of Light: Light in Nature ” chaired by Shaw ...
(Date:9/16/2014)... 16, 2014 --The emerging field of molecular electronics ... next level, enabling the construction of tiny circuits ... individual molecules would take on the roles currently ... A team of researchers from five Japanese and ... use in small-scale electronics: a molecule called picene. ...
(Date:9/16/2014)... HILL, N.C. , Sept. 16, 2014 ... experimental heart failure compound has been shown to be ... preclinical results demonstrate an alternative to intravenous infusions that ... HNO prodrugs. The data were presented yesterday at the ... Annual Scientific Meeting in Las Vegas ...
Breaking Biology Technology:MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 2MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 3MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 4MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 5MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 6MGB Biopharma Secures £4.0m ($6.4m) to Advance its Novel Lead Antibacterial, MGB-BP-3, into Clinical Development 7Nature’s designs inspire research into new light-based technologies 2Nature’s designs inspire research into new light-based technologies 3Nature’s designs inspire research into new light-based technologies 4Nature’s designs inspire research into new light-based technologies 5The future face of molecular electronics 2Cardioxyl Presents Oral Heart Failure Treatment Data For Its Experimental HNO Prodrug At HFSA 18th Annual Scientific Meeting 2
... a leading global,full-service contract research organization, announced it ... Clinical Pharmacology., Dr. Wei joins Medpace with ... early phase cardio-metabolic studies. He will consult,with sponsors ... to which studies merit inclusion in the programs ...
... today announced that it has appointed Mr. Jorge,Cantonnet to ... effective as of 1 February 2008. Mr. Cantonnet is ... agro-biotechnology company listed on OTCBB in Dec 2007,(OTC Bulletin ... million in fiscal year ended 30 September 2007, with ...
... and SAN DIEGO, Jan. 31 /PRNewswire-FirstCall/ - MIGENIX ... drugs for infectious,diseases, will add a 600mg celgosivir ... viral kinetics study in hepatitis C virus,("HCV") treatment-naive ... Health Canada and Institutional Review Board (IRB) approvals. ...
Cached Biology Technology:Medpace Hires Clinical Pharmacologist, Jim Wei, MD, PhD 2China Agro-Technology Appoints New CEO 2China Agro-Technology Appoints New CEO 3MIGENIX to Add 600mg Daily Celgosivir Dose to Phase II Viral Kinetics Study 2MIGENIX to Add 600mg Daily Celgosivir Dose to Phase II Viral Kinetics Study 3MIGENIX to Add 600mg Daily Celgosivir Dose to Phase II Viral Kinetics Study 4MIGENIX to Add 600mg Daily Celgosivir Dose to Phase II Viral Kinetics Study 5MIGENIX to Add 600mg Daily Celgosivir Dose to Phase II Viral Kinetics Study 6
RAT ANTI MOUSE F4/80 ANTIGEN:BIOTIN Immunogen: Thioglycollate stimulated peritoneal macrophages from C57/BL mice...
SHEEP ANTI FLECAINIDE...
ANTI PIG LDH H4...
RAT ANTI MOUSE F4/80 ANTIGEN:BIOTIN Immunogen: Thioglycollate stimulated peritoneal macrophages from C57/BL mice...
Biology Products: