Search results
Results from the WOW.Com Content Network
Klinowska, M. 1991. Dolphins, Porpoises and Whales of the World - The IUCN Red Data Book. IUCN. Gland, Switzerland. Pop 2002 = Committee on the Status of Endangered Wildlife in Canada (2002) Assessment and Update Status Report on the Blue Whale Balaenoptera musculus archive copy at the Wayback Machine Population size and trends, p5. (not used ...
The blue whale (Balaenoptera musculus) is a marine mammal and a baleen whale.Reaching a maximum confirmed length of 29.9 m (98 ft) and weighing up to 199 t (196 long tons; 219 short tons), it is the largest animal known ever to have existed.
Because of overhunting, the blue whale population has dropped from what biologists estimate was 200,000 in the 1800s to approximately 20,000 today. They are listed as endangered by the IUCN. Their ...
Graph of world population over the past 12,000 years . As a general rule, the confidence of estimates on historical world population decreases for the more distant past. Robust population data exist only for the last two or three centuries. Until the late 18th century, few governments had ever performed an accurate census.
A thrifty study uncovers a wealth of data about one of the world's largest and most elusive species.
This is a collection of lists of mammal species by the estimated global population, divided by orders. Lists only exist for some orders; for example, the most diverse order - rodents - is missing. Much of the data in these lists were created by the International Union for Conservation of Nature (IUCN) Global Mammal Assessment Team, which ...
For premium support please call: 800-290-4726 more ways to reach us
More than 99 percent of all species, amounting to over five billion species, [7] that ever lived on Earth are estimated to be extinct. [8] [9] Estimates on the number of Earth's current species range from 10 million to 14 million, [10] of which about 1.2 million have been documented and over 86 percent have not yet been described. [11]