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| Keywords: Blue Whale population, Pengo.svg Caption World population graph of Blue Whales Balaenoptera musculus Y-axis Left axis shows world population estimate the average is used when a range is given Right axis shows the same values expressed as percentage of pre-whaling population Data used Based on data taken from http //www animalinfo org/species/cetacean/balamusc htm animalinfo org - Blue Whale and other sources See below for expanded references wikitable border 1 cellpadding 2 Year Global population Reference Used - Before whaling About 275 000 Kemf Phillips 1994 yes - 1935 100 000 Animal World 1972 no - 1930s 30 000 - 40 000 IUCN 1966 yes - 1962 930 - 2790 IUCN 1966 yes - 1964 650 - 2000 Oryx 1964a yes - 1970 600 Animal World 1972 no - Late 1970s 4000 - 4500 Burton Pearson 1987 yes - 1980 About 6500 Nowak Paradiso 1983 yes - 1990 2500 - 3000 Klinowska 1991 yes - 1994 Probably under 5000 Kemf Phillips 1994 yes - 2002 5000 Pop 2002 no Some data points were not used because I found them only after making the graph Also Animal World 1972 is a poor source as it's an encyclopedia without citations References Kemf Phillips 1994 Whales in the Wild World Wildlife Fund Gland Switzerland IUCN 1966 Red Data Book Vol 1 - Mammalia International Union for the Conservation of Nature and Natural Resources Morges Switzerland Oryx 1964a Whaling agreement hitch Oryx 7 145 Burton Pearson 1987 Rare Mammals of the World Stephen Greene Press Lexington MA USA Nowak Paradiso 1983 Walker's Mammals of the World vols 1 and 2 4th edition Johns Hopkins University Press Baltimore MD USA 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 http //www wildwhales org/cetaceans/blue/sr_blue_whale_e pdf pdf Assessment and Update Status Report on the Blue Whale Balaenoptera musculus Population size and trends p5 not used in this version of the graph Animal World 1972 Encyclopedia of the Animal World 1972 p699 not used in graph Notes Commercial exploitation of whales began in the 19th century Average of estimates used rather than error bars IUCN estimates may be only of mature individuals need to check that Prewhaling population may be a huge under-estimate A recent study 2003 gives population estimates for fin and humpback whales far greater than those previously calculated for prewhaling populations Similar studies have not yet been done for Blue Whales Roman J and S R Palumbi 2003 Whales Before Whaling in the North Atlantic Science 301 508-510 http //www stanford edu/group/Palumbi/manuscripts/Whale2003 pdf PDF Tools Made in OpenOffice Calc v2 1 exported to SVG by first copying into Draw and then practically recreated in Inkscape v0 45 I don't recommend this way of making a graph PD-pengo derivative works Població de balenes blaves svg Blue Whale population Pengo-af svg Balaenoptera musculus Created with Inkscape | ||||
