In population ecology: Calculating population growth
This is known as the intrinsic rate of natural increase (r), or the Malthusian parameter. Very simply, this rate can be understood as the number of births minus the number of deaths per generation time—in other words, the reproduction rate less the death rate. To derive this value using a…
Read More
","url":"Introduction","wordCount":0,"sequence":1},"imarsData":{"HAS_REVERTED_TIMELINE":"false","INFINITE_SCROLL":""},"npsAdditionalContents":{},"templateHandler":{"name":"INDEX"},"paginationInfo":{"previousPage":null,"nextPage":null,"totalPages":1},"uaTemplate":"INDEX","infiniteScrollList":[{"p":1,"t":292023}],"topicLeftRail":{"topicInfo":{"id":292023,"title":"intrinsic rate of natural increase","url":"https://www.britannica.com/topic/intrinsic-rate-of-natural-increase","description":"Population ecology: Calculating population growth: This is known as the intrinsic rate of natural increase (r), or the Malthusian parameter. Very simply, this rate can be understood as the number of births minus the number of deaths per generation time—in other words, the reproduction rate less the death rate. To derive this value using a…","type":"TOPIC","titleText":"intrinsic rate of natural increase","urlTitle":"intrinsic-rate-of-natural-increase","metaDescription":"Other articles where intrinsic rate of natural increase is discussed: population ecology: Calculating population growth: This is known as the intrinsic rate of natural increase (r), or the Malthusian parameter. Very simply, this rate can be understood as the number of births minus the number of deaths per generation time—in other words, the reproduction rate less the death rate. To derive this value using a…","identifierHtml":"statistics","identifierText":"statistics","alternateTitles":"Malthusian parameter","topicClass":"topic","topicKey":"intrinsic-rate-of-natural-increase","articleContentType":"INDEX","ppTecType":"CONCEPT","gaTemplate":"INDEX","topicType":"INDEX","relativeUrl":"/topic/intrinsic-rate-of-natural-increase","assemblyLinkPrefix":"/media/1/292023/"},"topicLink":{"title":"intrinsic rate of natural increase","url":"https://www.britannica.com/topic/intrinsic-rate-of-natural-increase"},"tocTitle":"Directory","tocEntry":"References","toc":null,"quoteLink":null,"indexLink":null,"factsLink":null,"mediaLink":null,"media":null,"studentLinks":null,"relatedQuizzes":null,"topQuestions":null,"readNext":null,"discover":[{"id":3746,"title":"10 Failed Doomsday Predictions","url":"/list/10-failed-doomsday-predictions","description":"Predictions for the end of the world that (obviously) didn’t come true.","image":{"id":0,"url":"/74/166274-131-271F5350/Artist-interpretation-Space-meteoroid-impact-Meteor-world.jpg","altText":"Artist interpretation of a Space meteoroid impact. Meteor impact. Asteroid, End of the world, danger, destruction, dinosaur extinct, Judgement Day, Planet Earth, Doomsday Predictions, comet","credit":"© Hemera/Thinkstock","width":null,"height":null,"fullUrl":"https://cdn.britannica.com/74/166274-131-271F5350/Artist-interpretation-Space-meteoroid-impact-Meteor-world.jpg"},"type":"LIST","breadcrumb":{"homeLink":null,"items":[{"title":"List","url":"/list/browse"},{"title":"Literature","url":"/list/browse/Literature"}],"lastItemTitle":"Literature"},"superCategory":{"id":2,"title":"Arts & Culture","url":"Arts-Culture","description":"Explore arts and culture; entertainment and pop culture, actors, comics, dance, film, food, music, theatre, tv; visual arts, architecture, fashion, painting, photography, sculpture; literature, fiction, nonfiction, plays, poetry, short story; sports and recreation","keywords":"entertainment and pop culture, actors, comics, dance, film, food, music, theatre, tv; visual arts, architecture, fashion, painting, photography, sculpture; literature, fiction, nonfiction, plays, poetry, short story; sports and recreation","classId":"ART","sortOrder":6},"hashtags":["doomsday","apocalypse","failure","end of world","predictions","britannica","lists","encyclopedia","Encyclopedia Britannica"],"hashtagsString":"doomsday, apocalypse, failure, end of world, predictions, britannica, lists, encyclopedia, Encyclopedia Britannica","displayDate":[2013,4,3],"urlTitle":"10-failed-doomsday-predictions","featureSubType":"REGULAR","categories":[{"id":12000,"title":"Literature","url":"Literature","description":"With the development of language, the human imagination has found a way to create and communicate through the written word. A literary work can transport us into a fictional, fantastic new world, describe a fleeting feeling, or simply give us a picture of the past through novels, poems, tragedies, epic works, and other genres. Through literature, communication becomes an art, and it can bridge and bond people and cultures of different languages and backgrounds.","image":{"id":0,"url":"/44/172844-131-9695C31F/word-communication-stress-accent-letters-syllable.jpg","altText":"Literature","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/44/172844-131-9695C31F/word-communication-stress-accent-letters-syllable.jpg"}},null,null],"mainCategory":{"id":12000,"title":"Literature","url":"Literature","description":"With the development of language, the human imagination has found a way to create and communicate through the written word. A literary work can transport us into a fictional, fantastic new world, describe a fleeting feeling, or simply give us a picture of the past through novels, poems, tragedies, epic works, and other genres. Through literature, communication becomes an art, and it can bridge and bond people and cultures of different languages and backgrounds.","image":{"id":0,"url":"/44/172844-131-9695C31F/word-communication-stress-accent-letters-syllable.jpg","altText":"Literature","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/44/172844-131-9695C31F/word-communication-stress-accent-letters-syllable.jpg"}},"typeDisplayName":"List"},{"id":5778,"title":"12 Novels Considered the “Greatest Book Ever Written”","url":"/list/12-novels-considered-the-greatest-book-ever-written","description":"How many of these great novels have you read?","image":{"id":0,"url":"/55/142355-131-EFF621AF/books-Stack-literature-pile-reading-entertainment-society-2010.jpg","altText":"Close up of books. Stack of books, pile of books, literature, reading. Homepage 2010, arts and entertainment, history and society","credit":"© Hemera/Thinkstock","width":null,"height":null,"fullUrl":"https://cdn.britannica.com/55/142355-131-EFF621AF/books-Stack-literature-pile-reading-entertainment-society-2010.jpg"},"type":"LIST","breadcrumb":{"homeLink":null,"items":[{"title":"List","url":"/list/browse"},{"title":"Literature","url":"/list/browse/Literature"}],"lastItemTitle":"Literature"},"superCategory":{"id":2,"title":"Arts & Culture","url":"Arts-Culture","description":"Explore arts and culture; entertainment and pop culture, actors, comics, dance, film, food, music, theatre, tv; visual arts, architecture, fashion, painting, photography, sculpture; literature, fiction, nonfiction, plays, poetry, short story; sports and recreation","keywords":"entertainment and pop culture, actors, comics, dance, film, food, music, theatre, tv; visual arts, architecture, fashion, painting, photography, sculpture; literature, fiction, nonfiction, plays, poetry, short story; sports and recreation","classId":"ART","sortOrder":6},"hashtags":["novels","literature","books","Anna Karenina","To Kill a Mockingbird","Invisible Man","The Great Gatsby","A Passage to India","Don Quixote","Beloved","Mrs. Dalloway","The Color Purple","Jane Eyre","Charlotte Brontë","Alice Walker","Toni Morrison","Miguel de Cervantes","F. Scott Fitzgerald","E.M. Forster","Ralph Ellison","Harper Lee","Leo Tolstoy","best","greatest","top","Chinua Achebe","Gabriel García Márquez","Things Fall Apart","One Hundred Years of Solitude","Nobel Prize for Literature","African literature","Latin American literature "],"hashtagsString":"novels, literature, books, Anna Karenina, To Kill a Mockingbird, Invisible Man, The Great Gatsby, A Passage to India, Don Quixote, Beloved, Mrs. Dalloway, The Color Purple, Jane Eyre, Charlotte Brontë, Alice Walker, Toni Morrison, Miguel de Cervantes, F. Scott Fitzgerald, E.M. Forster, Ralph Ellison, Harper Lee, Leo Tolstoy, best, greatest, top, Chinua Achebe, Gabriel García Márquez, Things Fall Apart, One Hundred Years of Solitude, Nobel Prize for Literature, African literature, Latin American literature ","displayDate":[2023,6,23],"urlTitle":"12-novels-considered-the-greatest-book-ever-written","featureSubType":"REGULAR","categories":[{"id":12000,"title":"Literature","url":"Literature","description":"With the development of language, the human imagination has found a way to create and communicate through the written word. A literary work can transport us into a fictional, fantastic new world, describe a fleeting feeling, or simply give us a picture of the past through novels, poems, tragedies, epic works, and other genres. Through literature, communication becomes an art, and it can bridge and bond people and cultures of different languages and backgrounds.","image":{"id":0,"url":"/44/172844-131-9695C31F/word-communication-stress-accent-letters-syllable.jpg","altText":"Literature","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/44/172844-131-9695C31F/word-communication-stress-accent-letters-syllable.jpg"}},null,null],"mainCategory":{"id":12000,"title":"Literature","url":"Literature","description":"With the development of language, the human imagination has found a way to create and communicate through the written word. A literary work can transport us into a fictional, fantastic new world, describe a fleeting feeling, or simply give us a picture of the past through novels, poems, tragedies, epic works, and other genres. Through literature, communication becomes an art, and it can bridge and bond people and cultures of different languages and backgrounds.","image":{"id":0,"url":"/44/172844-131-9695C31F/word-communication-stress-accent-letters-syllable.jpg","altText":"Literature","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/44/172844-131-9695C31F/word-communication-stress-accent-letters-syllable.jpg"}},"typeDisplayName":"List"},{"id":3864,"title":"12 Greek Gods and Goddesses","url":"/list/12-greek-gods-and-goddesses","description":"Crazy? These gods aren’t crazy. Nooo….","image":{"id":0,"url":"/23/176123-131-94DCF6F8/Aphrodite.jpg","altText":"Aphrodite. Greek mythology. Sculpture. Aphrodite is the Greek goddess of love and beauty.","credit":"AdstockRF","width":null,"height":null,"fullUrl":"https://cdn.britannica.com/23/176123-131-94DCF6F8/Aphrodite.jpg"},"type":"LIST","breadcrumb":{"homeLink":null,"items":[{"title":"List","url":"/list/browse"},{"title":"Philosophy & Religion","url":"/list/browse/Philosophy-Religion"}],"lastItemTitle":"Philosophy & Religion"},"superCategory":{"id":5,"title":"History & Society","url":"History-Society","description":"Explore history and society; accidents and disasters; the age of revolutions; the ancient world; historic dynasties; global exploration; the middle ages; the modern world; prehistory; US history; world history; wars and battles; sociology; religion and philosophy; humanities; ethics; anthropology; festivals and holidays; human rights; human migration; international relations; politics, law, and government","keywords":"accidents and disasters; the age of revolutions; the ancient world; historic dynasties; global exploration; the middle ages; the modern world; prehistory; US history; world history; wars and battles; sociology; religion and philosophy; humanities; ethics; anthropology; festivals and holidays; human rights; human migration; international relations; politics, law, and government","classId":"HISTORY","sortOrder":1},"hashtags":["encyclopedia","britannica","encyclopedia britannica","list","lists","greek","ancient","religion","gods","goddesses","mythology","culture","aprodite","athena","zeus","ares","hermes"],"hashtagsString":"encyclopedia, britannica, encyclopedia britannica, list, lists, greek, ancient, religion, gods, goddesses, mythology, culture, aprodite, athena, zeus, ares, hermes","displayDate":[2014,10,2],"urlTitle":"12-greek-gods-and-goddesses","featureSubType":"REGULAR","categories":[{"id":7000,"title":"Philosophy & Religion","url":"Philosophy-Religion","description":"Humans have long pondered not only how we came to be but also why we came to be. The earliest Greek philosophers focused their attention upon the origin and nature of the physical world; later philosophers have theorized about the nature of knowledge, truth, good and evil, love, friendship, and much more. Philosophy involves a methodical assessment of any and all aspects of human existence and experience. The realms of philosophy and religion have sometimes intersected in conducting such inquiries as these. As with philosophy, the study of religion underscores how humankind has long speculated about its origins. The possibility of a higher being (or beings) to which livings things owe their existence has long captived human thought. Many religions also offer their own views on the nature of good and evil, and they may prescribe guidelines and judgment on different kinds of human behavior.","image":{"id":0,"url":"/95/180595-050-EDF2CA3A.jpg","altText":"Philosophy & Religion","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/95/180595-050-EDF2CA3A.jpg"}},{"id":11000,"title":"Visual Arts","url":"Visual-Arts","description":"These are the arts that meet the eye and evoke an emotion through an expression of skill and imagination. They include the most ancient forms, such as painting and drawing, and the arts that were born thanks to the development of technology, like sculpture, printmaking, photography, and installation art. Though beauty is in the eye of the beholder, different eras in art history have had their own principles to define beauty, from the richly ornamented taste of the Baroque to the simple utilitarian style of the Prairie School.","image":{"id":0,"url":"/45/24345-050-78FAA104.jpg","altText":"Visual Arts","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/45/24345-050-78FAA104.jpg"}},null],"mainCategory":{"id":7000,"title":"Philosophy & Religion","url":"Philosophy-Religion","description":"Humans have long pondered not only how we came to be but also why we came to be. The earliest Greek philosophers focused their attention upon the origin and nature of the physical world; later philosophers have theorized about the nature of knowledge, truth, good and evil, love, friendship, and much more. Philosophy involves a methodical assessment of any and all aspects of human existence and experience. The realms of philosophy and religion have sometimes intersected in conducting such inquiries as these. As with philosophy, the study of religion underscores how humankind has long speculated about its origins. The possibility of a higher being (or beings) to which livings things owe their existence has long captived human thought. Many religions also offer their own views on the nature of good and evil, and they may prescribe guidelines and judgment on different kinds of human behavior.","image":{"id":0,"url":"/95/180595-050-EDF2CA3A.jpg","altText":"Philosophy & Religion","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/95/180595-050-EDF2CA3A.jpg"}},"typeDisplayName":"List"},{"id":10170,"title":"All 119 References in “We Didn’t Start the Fire,” Explained","url":"/list/all-119-references-in-we-didnt-start-the-fire-explained","description":"No, Billy Joel isn’t talking about the band U2.","image":{"id":0,"url":"/04/79904-131-6DCAD337/Elizabeth-II-speech-throne-Parliament-state-opening-1958.jpg","altText":"Queen Elizabeth II addresses at opening of Parliament. (Date unknown on photo, but may be 1958, the first time the opening of Parliament was filmed.)","credit":"Encyclopædia Britannica, Inc.","width":null,"height":null,"fullUrl":"https://cdn.britannica.com/04/79904-131-6DCAD337/Elizabeth-II-speech-throne-Parliament-state-opening-1958.jpg"},"type":"LIST","breadcrumb":{"homeLink":null,"items":[{"title":"List","url":"/list/browse"},{"title":"Entertainment & Pop Culture","url":"/list/browse/Entertainment-Pop-Culture"}],"lastItemTitle":"Entertainment & Pop Culture"},"superCategory":{"id":2,"title":"Arts & Culture","url":"Arts-Culture","description":"Explore arts and culture; entertainment and pop culture, actors, comics, dance, film, food, music, theatre, tv; visual arts, architecture, fashion, painting, photography, sculpture; literature, fiction, nonfiction, plays, poetry, short story; sports and recreation","keywords":"entertainment and pop culture, actors, comics, dance, film, food, music, theatre, tv; visual arts, architecture, fashion, painting, photography, sculpture; literature, fiction, nonfiction, plays, poetry, short story; sports and recreation","classId":"ART","sortOrder":6},"hashtags":["We Didn’t Start the Fire","Billy Joel","Harry Truman","Doris Day","China","communism","Johnnie Ray","rock music","Elvis","South Pacific","Rodgers and Hammerstein","Walter Winchell","Joseph McCarthy","Red Scare","Joe DiMaggio","McCarthyism","Richard Nixon","Studebaker","Studebaker-Packard","television","North Korea","South Korea","Korean War","Marilyn Monroe","Gentlemen Prefer Blondes","The Seven Year Itch","Julius Rosenberg","Ethel Rosenberg","H-bomb","hydrogen bomb","thermonuclear bomb","Sugar Ray","Sugar Ray Robinson","P'anmunjŏm","demilitarized zone","Marlon Brando","A Streetcar Named Desire","The Godfather","The King and I","Yul Brynner","Siam","Juan Peron","Eva Peron","Arturo Toscanini","Dacron","aorta","Dien Bien Phu","Indochina War","The Catcher in the Rye","Dwight D. Eisenhower","Reconstruction","civil rights","polio","vaccine","Jonas Salk","Elizabeth II","Rocky Marciano","boxing","Liberace","The Liberace Show","George Santayana","Joseph Stalin","Soviet Union","Malenkov","Nikita Khrushchev","Gamal Abdel Nasser","Sergey Prokofiev","Winthrop Rockefeller","Roy Campanella","Communist Bloc","Cold War","Donald Trump","Roy Cohn","Bill Haley and His Comets","Decca","Rock Around the Clock","Albert Einstein","James Dean","Brooklyn Dodgers","Jackie Robinson","Davy Crockett","Disney","Peter Pan","J.M. Barrie","Elvis Presley","Disneyland","Walt Disney","Brigitte Bardot","Hungarian Revolution","Budapest","Rosa Parks","Alabama","Montgomery bus boycott","de-Stalinization","Grace Kelly","Princess Grace","Prince Rainier","Rainier III","Monaco","Peyton Place","soap opera","Suez Canal","Little Rock Nine","Dwight D. Eisenhower","Boris Leonidovich Pasternak","Boris Pasternak","Doctor Zhivago","Mickey Mantle","Beat writer","Jack Kerouac","On the Road","Sputnik","Chou En-Lai","Zhou Enlai","China","Bridge on the River Kwai","Hollywood blacklist","Lebanon","Camille Chamoun","Charles de Gaulle","NATO","San Francisco Giants","Charles Starkweather","thalidomide","Buddy Holly","Ben Hur","","hula hoop","Fidel Castro","Cuba","U-2","Syngman Rhee","payola","Chubby Checker","the twist","Hank Ballard","American Bandstand","Psycho","Ed Gein","Alfred Hitchco*ck","Democratic Republic of the Congo","Belgium","colonization","Ernest Hemingway","Lost Generation","The Sun Also Rises","A Farewell to Arms","Adolf Eichmann","Holocaust","Stranger in a Strange Land","Robert A. Heinlein","Bob Dylan","Berlin Wall","Bay of Pigs","CIA","Lawrence of Arabia","Peter O’Toole","The Beatles","Beatlemania","Ole Miss","University of Mississippi","James Meredith","Robert F. Kennedy","John Glenn","Yuri Gagarin","Sonny Liston","Floyd Patterson","Pope Paul VI","Malcolm X","John Profumo","Christine Keeler","Profumo affair","Griswold v. State of Connecticut","birth control","Ho Chi Minh","Neil Armstrong","Apollo 11","Woodstock","Watergate","punk rock","Menachem Begin","Israel","Ronald Reagan","Palestine","Jimmy Carter","PLO","hijacking","Ruhollah Khomeini","Ayatollah Khomeini","Mohammad Reza Shah Pahlavi","shah of Iran","Afghanistan","Wheel of Fortune","Sally Ride","heavy metal","death metal","inflation","Vietnam War","AIDS","CDC","crack epidemic","crack cocaine","Bernie Goetz","hypodermic needle","medical waste","Tiananmen Square","martial law","Tank Man","Coca-Cola","PepsiCo","Paula Abdul","Michael Jackson"],"hashtagsString":"We Didn’t Start the Fire, Billy Joel, Harry Truman, Doris Day, China, communism, Johnnie Ray, rock music, Elvis, South Pacific, Rodgers and Hammerstein, Walter Winchell, Joseph McCarthy, Red Scare, Joe DiMaggio, McCarthyism, Richard Nixon, Studebaker, Studebaker-Packard, television, North Korea, South Korea, Korean War, Marilyn Monroe, Gentlemen Prefer Blondes, The Seven Year Itch, Julius Rosenberg, Ethel Rosenberg, H-bomb, hydrogen bomb, thermonuclear bomb, Sugar Ray, Sugar Ray Robinson, P'anmunjŏm, demilitarized zone, Marlon Brando, A Streetcar Named Desire, The Godfather, The King and I, Yul Brynner, Siam, Juan Peron, Eva Peron, Arturo Toscanini, Dacron, aorta, Dien Bien Phu, Indochina War, The Catcher in the Rye, Dwight D. Eisenhower, Reconstruction, civil rights, polio, vaccine, Jonas Salk, Elizabeth II, Rocky Marciano, boxing, Liberace, The Liberace Show, George Santayana, Joseph Stalin, Soviet Union, Malenkov, Nikita Khrushchev, Gamal Abdel Nasser, Sergey Prokofiev, Winthrop Rockefeller, Roy Campanella, Communist Bloc, Cold War, Donald Trump, Roy Cohn, Bill Haley and His Comets, Decca, Rock Around the Clock, Albert Einstein, James Dean, Brooklyn Dodgers, Jackie Robinson, Davy Crockett, Disney, Peter Pan, J.M. Barrie, Elvis Presley, Disneyland, Walt Disney, Brigitte Bardot, Hungarian Revolution, Budapest, Rosa Parks, Alabama, Montgomery bus boycott, de-Stalinization, Grace Kelly, Princess Grace, Prince Rainier, Rainier III, Monaco, Peyton Place, soap opera, Suez Canal, Little Rock Nine, Dwight D. Eisenhower, Boris Leonidovich Pasternak, Boris Pasternak, Doctor Zhivago, Mickey Mantle, Beat writer, Jack Kerouac, On the Road, Sputnik, Chou En-Lai, Zhou Enlai, China, Bridge on the River Kwai, Hollywood blacklist, Lebanon, Camille Chamoun, Charles de Gaulle, NATO, San Francisco Giants, Charles Starkweather, thalidomide, Buddy Holly, Ben Hur, , hula hoop, Fidel Castro, Cuba, U-2, Syngman Rhee, payola, Chubby Checker, the twist, Hank Ballard, American Bandstand, Psycho, Ed Gein, Alfred Hitchco*ck, Democratic Republic of the Congo, Belgium, colonization, Ernest Hemingway, Lost Generation, The Sun Also Rises, A Farewell to Arms, Adolf Eichmann, Holocaust, Stranger in a Strange Land, Robert A. Heinlein, Bob Dylan, Berlin Wall, Bay of Pigs, CIA, Lawrence of Arabia, Peter O’Toole, The Beatles, Beatlemania, Ole Miss, University of Mississippi, James Meredith, Robert F. Kennedy, John Glenn, Yuri Gagarin, Sonny Liston, Floyd Patterson, Pope Paul VI, Malcolm X, John Profumo, Christine Keeler, Profumo affair, Griswold v. State of Connecticut, birth control, Ho Chi Minh, Neil Armstrong, Apollo 11, Woodstock, Watergate, punk rock, Menachem Begin, Israel, Ronald Reagan, Palestine, Jimmy Carter, PLO, hijacking, Ruhollah Khomeini, Ayatollah Khomeini, Mohammad Reza Shah Pahlavi, shah of Iran, Afghanistan, Wheel of Fortune, Sally Ride, heavy metal, death metal, inflation, Vietnam War, AIDS, CDC, crack epidemic, crack cocaine, Bernie Goetz, hypodermic needle, medical waste, Tiananmen Square, martial law, Tank Man, Coca-Cola, PepsiCo, Paula Abdul, Michael Jackson","displayDate":[2023,5,9],"urlTitle":"all-119-references-in-we-didnt-start-the-fire-explained","featureSubType":"REGULAR","categories":[{"id":10000,"title":"Entertainment & Pop Culture","url":"Entertainment-Pop-Culture","description":"Entertainment and leisure activities have been a part of culture in one form or another since the ancient times. Dance performances, live music, and storytelling have a long tradition throughout history, even as the styles and available methods of delivery have shifted dramatically.","image":{"id":0,"url":"/04/167104-050-A0D0F726.jpg","altText":"Entertainment & Pop Culture","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/04/167104-050-A0D0F726.jpg"}},null,null],"mainCategory":{"id":10000,"title":"Entertainment & Pop Culture","url":"Entertainment-Pop-Culture","description":"Entertainment and leisure activities have been a part of culture in one form or another since the ancient times. Dance performances, live music, and storytelling have a long tradition throughout history, even as the styles and available methods of delivery have shifted dramatically.","image":{"id":0,"url":"/04/167104-050-A0D0F726.jpg","altText":"Entertainment & Pop Culture","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/04/167104-050-A0D0F726.jpg"}},"typeDisplayName":"List"},{"id":6193,"title":"Why Does Cilantro Taste Like Soap to Some People?","url":"/story/why-does-cilantro-taste-like-soap-to-some-people","description":"Some people detest cilantro in their food. Are they more than just picky eaters?","image":{"id":0,"url":"/63/194863-131-E49C6B35/Coriander-leaves-cilantro-herbs-background.jpg","altText":"Coriander leaves, fresh green cilantro on wooden background, herbs","credit":"© coffeekai/stock.adobe.com","width":null,"height":null,"fullUrl":"https://cdn.britannica.com/63/194863-131-E49C6B35/Coriander-leaves-cilantro-herbs-background.jpg"},"type":"STORY","breadcrumb":{"homeLink":null,"items":[{"title":"Demystified","url":"/stories/demystified"},{"title":"Entertainment & Pop Culture","url":"/stories/demystified/Entertainment-Pop-Culture"}],"lastItemTitle":"Entertainment & Pop Culture"},"superCategory":{"id":2,"title":"Arts & Culture","url":"Arts-Culture","description":"Explore arts and culture; entertainment and pop culture, actors, comics, dance, film, food, music, theatre, tv; visual arts, architecture, fashion, painting, photography, sculpture; literature, fiction, nonfiction, plays, poetry, short story; sports and recreation","keywords":"entertainment and pop culture, actors, comics, dance, film, food, music, theatre, tv; visual arts, architecture, fashion, painting, photography, sculpture; literature, fiction, nonfiction, plays, poetry, short story; sports and recreation","classId":"ART","sortOrder":6},"hashtags":["demystified","cilantro","coriander","taste","cooking","soap","genetics","genes","soapy","bad"],"hashtagsString":"demystified, cilantro, coriander, taste, cooking, soap, genetics, genes, soapy, bad","displayDate":[2017,4,20],"urlTitle":"why-does-cilantro-taste-like-soap-to-some-people","featureSubType":"DEMYSTIFIED","categories":[{"id":10000,"title":"Entertainment & Pop Culture","url":"Entertainment-Pop-Culture","description":"Entertainment and leisure activities have been a part of culture in one form or another since the ancient times. Dance performances, live music, and storytelling have a long tradition throughout history, even as the styles and available methods of delivery have shifted dramatically.","image":{"id":0,"url":"/04/167104-050-A0D0F726.jpg","altText":"Entertainment & Pop Culture","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/04/167104-050-A0D0F726.jpg"}},{"id":1000,"title":"Science","url":"Science","description":"How can the sky be blue one day and stormy the next? Why do heavy objects tend to fall downwards when dropped? How are birds able to fly (and why can’t I do the same?)? Human beings have long been curious about the world in which we live, striving to identify connections among the phenomenons we witness and to understand how it all works. The field of science has developed over many centuries as a way of studying and understanding the world, beginning with the primitive stage of simply noting important regularities in nature and continuing through the rise of modern science. The modern-day sciences cover a vast range of fields, including biology, chemistry, meteorology, astronomy, physics, and much more.","image":{"id":0,"url":"/86/193986-050-7B2DBB6A/ball-and-stick-model-structure-atoms.jpg","altText":"Science","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/86/193986-050-7B2DBB6A/ball-and-stick-model-structure-atoms.jpg"}},{"id":3000,"title":"Health & Medicine","url":"Health-Medicine","description":"The study of the human mind and body, how these function, and how they interact—not only with each other but also with their environment—has been of utmost importance in ensuring human well-being. Research on potential treatments and preventive medicine has expanded greatly with the development of modern medicine, and a network of disciplines, including such fields as genetics, psychology, and nutrition, aims to facilitate the betterment of our health.","image":{"id":0,"url":"/07/192107-050-CE043374/anatomy-charts-human-body-muscle-systems-skeletal.jpg","altText":"Health & Medicine","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/07/192107-050-CE043374/anatomy-charts-human-body-muscle-systems-skeletal.jpg"}}],"mainCategory":{"id":10000,"title":"Entertainment & Pop Culture","url":"Entertainment-Pop-Culture","description":"Entertainment and leisure activities have been a part of culture in one form or another since the ancient times. Dance performances, live music, and storytelling have a long tradition throughout history, even as the styles and available methods of delivery have shifted dramatically.","image":{"id":0,"url":"/04/167104-050-A0D0F726.jpg","altText":"Entertainment & Pop Culture","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/04/167104-050-A0D0F726.jpg"}},"typeDisplayName":"Demystified"},{"id":12132,"title":"6 of the World’s Deadliest Natural Disasters","url":"/list/6-of-the-worlds-deadliest-natural-disasters","description":"This list compiles six of the deadliest natural disasters in world history.","image":{"id":0,"url":"/16/234616-131-50959175/Damage-Balakot-Pakistan-due-to-earthquake-October-8-2005-Kashmir.jpg","altText":"In this aerial photo, structures are damaged and destroyed October 15, 2005 in Balakot, Pakistan. It is estimated that 90% of the city of Balakot was leveled by the earthquake. The death toll in the 7.6 magnitude earthquake that struck northern Pakistan on October 8, 2005 is believed to be 38,000 with at least 1,300 more dead in Indian Kashmir. SEE CONTENT NOTES.","credit":"Paula Bronstein/Getty Images","width":null,"height":null,"fullUrl":"https://cdn.britannica.com/16/234616-131-50959175/Damage-Balakot-Pakistan-due-to-earthquake-October-8-2005-Kashmir.jpg"},"type":"LIST","breadcrumb":{"homeLink":null,"items":[{"title":"List","url":"/list/browse"},{"title":"World History","url":"/list/browse/World-History"}],"lastItemTitle":"World History"},"superCategory":{"id":5,"title":"History & Society","url":"History-Society","description":"Explore history and society; accidents and disasters; the age of revolutions; the ancient world; historic dynasties; global exploration; the middle ages; the modern world; prehistory; US history; world history; wars and battles; sociology; religion and philosophy; humanities; ethics; anthropology; festivals and holidays; human rights; human migration; international relations; politics, law, and government","keywords":"accidents and disasters; the age of revolutions; the ancient world; historic dynasties; global exploration; the middle ages; the modern world; prehistory; US history; world history; wars and battles; sociology; religion and philosophy; humanities; ethics; anthropology; festivals and holidays; human rights; human migration; international relations; politics, law, and government","classId":"HISTORY","sortOrder":1},"hashtags":["natural disasters","hurricane","flood","typhoon","earthquake","worst","deadliest","Britannica","Encyclopaedia Britannica","Encyclopedia Britannica"],"hashtagsString":"natural disasters, hurricane, flood, typhoon, earthquake, worst, deadliest, Britannica, Encyclopaedia Britannica, Encyclopedia Britannica","displayDate":[2023,9,1],"urlTitle":"6-of-the-worlds-deadliest-natural-disasters","featureSubType":"REGULAR","categories":[{"id":6000,"title":"World History","url":"World-History","description":"Does history really repeat itself, or can we learn from the mistakes of those who came before us? History provides a chronological, statistical, and cultural record of the events, people, and movements that have made an impact on humankind and the world at large throughout the ages.","image":{"id":0,"url":"/05/84505-050-8BB58BE6/cave-art-Ennedi-Plateau-Chad.jpg","altText":"World History","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/05/84505-050-8BB58BE6/cave-art-Ennedi-Plateau-Chad.jpg"}},{"id":1000,"title":"Science","url":"Science","description":"How can the sky be blue one day and stormy the next? Why do heavy objects tend to fall downwards when dropped? How are birds able to fly (and why can’t I do the same?)? Human beings have long been curious about the world in which we live, striving to identify connections among the phenomenons we witness and to understand how it all works. The field of science has developed over many centuries as a way of studying and understanding the world, beginning with the primitive stage of simply noting important regularities in nature and continuing through the rise of modern science. The modern-day sciences cover a vast range of fields, including biology, chemistry, meteorology, astronomy, physics, and much more.","image":{"id":0,"url":"/86/193986-050-7B2DBB6A/ball-and-stick-model-structure-atoms.jpg","altText":"Science","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/86/193986-050-7B2DBB6A/ball-and-stick-model-structure-atoms.jpg"}},null],"mainCategory":{"id":6000,"title":"World History","url":"World-History","description":"Does history really repeat itself, or can we learn from the mistakes of those who came before us? History provides a chronological, statistical, and cultural record of the events, people, and movements that have made an impact on humankind and the world at large throughout the ages.","image":{"id":0,"url":"/05/84505-050-8BB58BE6/cave-art-Ennedi-Plateau-Chad.jpg","altText":"World History","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/05/84505-050-8BB58BE6/cave-art-Ennedi-Plateau-Chad.jpg"}},"typeDisplayName":"List"},{"id":6465,"title":"Why Is the Mona Lisa So Famous?","url":"/story/why-is-the-mona-lisa-so-famous","description":"The reason for the Mona Lisa’s popularity is one of the painting’s many conundrums. Find out what all the fuss is about.","image":{"id":0,"url":"/24/189624-131-BAF1184D/Mona-Lisa-oil-wood-panel-Leonardo-da.jpg","altText":"Mona Lisa, oil on wood panel by Leonardo da Vinci, c. 1503-06; in the Louvre, Paris, France. 77 x 53 cm.","credit":"© Everett-Art/Shutterstock.com","width":null,"height":null,"fullUrl":"https://cdn.britannica.com/24/189624-131-BAF1184D/Mona-Lisa-oil-wood-panel-Leonardo-da.jpg"},"type":"STORY","breadcrumb":{"homeLink":null,"items":[{"title":"Demystified","url":"/stories/demystified"},{"title":"Visual Arts","url":"/stories/demystified/Visual-Arts"}],"lastItemTitle":"Visual Arts"},"superCategory":{"id":2,"title":"Arts & Culture","url":"Arts-Culture","description":"Explore arts and culture; entertainment and pop culture, actors, comics, dance, film, food, music, theatre, tv; visual arts, architecture, fashion, painting, photography, sculpture; literature, fiction, nonfiction, plays, poetry, short story; sports and recreation","keywords":"entertainment and pop culture, actors, comics, dance, film, food, music, theatre, tv; visual arts, architecture, fashion, painting, photography, sculpture; literature, fiction, nonfiction, plays, poetry, short story; sports and recreation","classId":"ART","sortOrder":6},"hashtags":["demystified","Mona Lisa","Leonardo da Vinci","mystery","fame","celebrity","Giorgio Vasari","sfumato","model","form","Francis I","king of France","Francois I","French Revolution","royal collection","Napoleon","Louvre","Louvre Museum","Lisa Gherardini","Francesco del Giocondo","Romanticism","Theophile Gautier","Walter Pater","vampire","myth","Michelangelo","Raphael","Renaissance","Renaissance art","inventions","theft","Pablo Picasso","Florence","Vincenzo Peruggia","World War I","Marcel Duchamp","L.H.O.O.Q.","Andy Warhol","cartoonists","Metropolitan Museum of Art","National Gallery of Art","Paris"],"hashtagsString":"demystified, Mona Lisa, Leonardo da Vinci, mystery, fame, celebrity, Giorgio Vasari, sfumato, model, form, Francis I, king of France, Francois I, French Revolution, royal collection, Napoleon, Louvre, Louvre Museum, Lisa Gherardini, Francesco del Giocondo, Romanticism, Theophile Gautier, Walter Pater, vampire, myth, Michelangelo, Raphael, Renaissance, Renaissance art, inventions, theft, Pablo Picasso, Florence, Vincenzo Peruggia, World War I, Marcel Duchamp, L.H.O.O.Q., Andy Warhol, cartoonists, Metropolitan Museum of Art, National Gallery of Art, Paris","displayDate":[2023,9,8],"urlTitle":"why-is-the-mona-lisa-so-famous","featureSubType":"DEMYSTIFIED","categories":[{"id":11000,"title":"Visual Arts","url":"Visual-Arts","description":"These are the arts that meet the eye and evoke an emotion through an expression of skill and imagination. They include the most ancient forms, such as painting and drawing, and the arts that were born thanks to the development of technology, like sculpture, printmaking, photography, and installation art. Though beauty is in the eye of the beholder, different eras in art history have had their own principles to define beauty, from the richly ornamented taste of the Baroque to the simple utilitarian style of the Prairie School.","image":{"id":0,"url":"/45/24345-050-78FAA104.jpg","altText":"Visual Arts","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/45/24345-050-78FAA104.jpg"}},{"id":10000,"title":"Entertainment & Pop Culture","url":"Entertainment-Pop-Culture","description":"Entertainment and leisure activities have been a part of culture in one form or another since the ancient times. Dance performances, live music, and storytelling have a long tradition throughout history, even as the styles and available methods of delivery have shifted dramatically.","image":{"id":0,"url":"/04/167104-050-A0D0F726.jpg","altText":"Entertainment & Pop Culture","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/04/167104-050-A0D0F726.jpg"}},null],"mainCategory":{"id":11000,"title":"Visual Arts","url":"Visual-Arts","description":"These are the arts that meet the eye and evoke an emotion through an expression of skill and imagination. They include the most ancient forms, such as painting and drawing, and the arts that were born thanks to the development of technology, like sculpture, printmaking, photography, and installation art. Though beauty is in the eye of the beholder, different eras in art history have had their own principles to define beauty, from the richly ornamented taste of the Baroque to the simple utilitarian style of the Prairie School.","image":{"id":0,"url":"/45/24345-050-78FAA104.jpg","altText":"Visual Arts","credit":null,"width":null,"height":null,"fullUrl":"https://cdn.britannica.com/45/24345-050-78FAA104.jpg"}},"typeDisplayName":"Demystified"}]},"byline":null,"citationInfo":null,"websites":null,"freeTopicReason":"TOPIC_IS_INDEX_PAGE","articleSchemaMarkup":{"keywords":"intrinsic rate of natural increase","wordcount":0,"url":"https://www.britannica.com/topic/intrinsic-rate-of-natural-increase","description":"Other articles where intrinsic rate of natural increase is discussed: population ecology: Calculating population growth: This is known as the intrinsic rate of natural increase (r), or the Malthusian parameter. Very simply, this rate can be understood as the number of births minus the number of deaths per generation time—in other words, the reproduction rate less the death rate. To derive this value using a…","publisher":{"name":"Encyclopedia Britannica","@type":"Organization","logo":{"url":"https://corporate.britannica.com/wp-content/themes/eb-corporate/_img/logo.png","@type":"ImageObject"}},"@context":"https://schema.org","@type":"article"},"studentArticle":false,"initialLoad":true}
intrinsic rate of natural increase
Directory
References
Discover
10 Failed Doomsday Predictions
12 Novels Considered the “Greatest Book Ever Written”
12 Greek Gods and Goddesses
All 119 References in “We Didn’t Start the Fire,” Explained
Why Does Cilantro Taste Like Soap to Some People?
6 of the World’s Deadliest Natural Disasters
Why Is the Mona Lisa So Famous?
statistics
Also known as: Malthusian parameter
Learn about this topic in these articles:
population growth
- In population ecology: Calculating population growth
This is known as the intrinsic rate of natural increase (r), or the Malthusian parameter. Very simply, this rate can be understood as the number of births minus the number of deaths per generation time—in other words, the reproduction rate less the death rate. To derive this value using a…
Read More