多度

多度是指一定区域内生态系统中特定物种个体的数量[1],是种群群落的重要参数,也是生态学研究的经典问题[2]。物种多度分为绝对数量和相对多度[2]。一个物种相对于生活在生态系统中的一个或多个其他物种的丰度之比称为相对多度[1]

参考文献

  1. ^ 1.0 1.1 Preston, F.W. The Commonness, and Rarity, of Species (PDF). Ecology. July 1948, 29 (3): 254–283 [2020-11-16]. JSTOR 1930989. doi:10.2307/1930989. (原始内容存档 (PDF)于2014-12-22). 
  2. ^ 2.0 2.1 Lijun, Chen; Wenhong, Xiao; Zhishu, Xiao. Limitations of relative abundance indices calculated from camera-trapping data. Biodiversity Science. 2019, 27 (3): 243–248. doi:10.17520/biods.2018327. 

Read other articles:

Confession CouplePoster promosiJudul asli고백부부 GenreRomanKomediDramaPengembangKBS Drama ProductionDitulis olehKwon Hye-jooSutradaraHa Byung-hoonPemeranSon Ho-junJang NaraNegara asalKorea SelatanBahasa asliKoreaJmlh. episode12ProduksiProduser eksekutifHa WonHan Suk-wonProduserSon Soo-chunYoo Woong-shikDurasi70 menitRumah produksiConfession Couple S.P.C.KBS NZIUM Content Co. Ltd.DistributorKBSRilis asliJaringanKBS2Format gambar1080i (HDTV)Format audioDolby DigitalRilis13 Oktober (2...

 

Questa voce rientra tra gli argomenti trattati dai progetti tematici sottoindicati.Puoi consultare le discussioni in corso, aprirne una nuova o segnalarne una avviata qui.Economia bar di progetto monitoraggio vociEuropa bar di progetto monitoraggio vociNumismatica bar di progetto monitoraggio vociLa voce non è stata ancora monitorata, fallo ora!ncNessuna informazione sull'accuratezza dei contenuti. (che significa?)ncNessuna informazione sulla scrittura. (che significa?)ncNessuna informazione...

 

Jika ingin mempelajari semiotika, peletak dasarnya adalah Ferdinand de Saussure. Menurut Saussure, semilogi atau semiotik merupakan ilmu yang mempelajari kehidupan tanda di dalam masyarakat. Semilogi berkaitan denga napa yang memunculkan tanda dan hukum apa yang mengatur tanda (dalam Bernard, 2009: 115—118). Tanda terdiri atas dua bagian, penanda (signifier) dan petanda (signified). Penanda (signifier) adalah bagian fisik tanda yang berupa suara atau bentuk kata, sedangkan petanda (signifie...

This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. Please help improve this article by introducing more precise citations. (June 2019) (Learn how and when to remove this template message) For other uses, see Military Cross (disambiguation). AwardOrder of the Military CrossGrand Cross (obverse & reverse)TypeThree classesAwarded forDistinguished service in the field of counter-terrorism or militar...

 

Soviet forced penal labour camp system For other uses, see Gulag (disambiguation). Not to be confused with Kulak. GulagTrademark logo (1939)Map of the camps between 1923 and 1961[a] 18,000,000 people passed through the Gulag's camps[1][2][3] 53 Gulag camp directorates (colloquially referred to as simply camps) and 423 labor colonies in the Soviet Union as of March 1940[4] The tentative consensus in contemporary Soviet historiography is that roughly 1,60...

 

Untuk politikus New York, lihat Stephen Hawley. Steven A. HawleyLahirSteven Alan Hawley12 Desember 1951 (umur 72)Ottawa, Kansas, ASStatusPensiunKebangsaanAmerikaKarier luar angkasaAntariksawan NASAMisiSTS-41-D, STS-61-C, STS-31, STS-82, STS-93Lambang misi Suami/istriSally Ride (m. 1982–1987; bercerai) Steven Alan Hawley (lahir 12 Desember 1951) adalah seorang mantan antariksawan NASA yang ikut dalam lima penerbangan pesawat luar angkasa AS. Ia adalah profesor fisika dan astronomi dan d...

Ne pas confondre avec Racing Point Force India F1 Team, présente en Formule 1 à partir de la mi-saison 2018 et créée sur les bases de la présente écurie. Sahara Force India Formula One Team Caractéristiques Caractéristiques de l'écurie Discipline Formule 1 Localisation Silverstone Dirigeants et pilotes Président Subrata Roy (en) Vijay Mallya Directeur Robert Fernley Directeur technique Andrew Green Pilotes Giancarlo Fisichella Adrian Sutil Vitantonio Liuzzi Paul di Resta Nico ...

 

Reciprocating internal combustion engine Suzuki F engineSuzuki F6A engineOverviewManufacturerSuzukiProduction1977-2022LayoutConfigurationInline-threeInline-fourDisplacement543 cc (33.1 cu in)547 cc (33.4 cu in)657 cc (40.1 cu in)658 cc (40.2 cu in)796 cc (48.6 cu in)797 cc (48.6 cu in)970 cc (59.2 cu in)1,061 cc (64.7 cu in)Cylinder bore62 mm (2.4 in)65 mm (2....

 

Mantacomune Manta – Veduta LocalizzazioneStato Italia Regione Piemonte Provincia Cuneo AmministrazioneSindacoPaolo Vulcano (lista civica) dal 27-5-2019 TerritorioCoordinate44°37′N 7°29′E / 44.616667°N 7.483333°E44.616667; 7.483333 (Manta)Coordinate: 44°37′N 7°29′E / 44.616667°N 7.483333°E44.616667; 7.483333 (Manta) Altitudine400 m s.l.m. Superficie11,73 km² Abitanti3 786[1] (30-4-2023)...

73rd United States Postmaster General Patrick Donahoe73rd United States Postmaster GeneralIn officeDecember 6, 2010 – February 1, 2015PresidentBarack ObamaDeputyRonald StromanPreceded byJack PotterSucceeded byMegan Brennan Personal detailsBornOctober 27, 1955[1]Pittsburgh, Pennsylvania, U.S.EducationUniversity of Pittsburgh (BA)Massachusetts Institute of Technology (MBA) Patrick R. Donahoe is an American politician who served as the 73rd United States Postmaster General, ha...

 

Carabinieri nell'atto di caricare i manifestanti in corso Torino a Genova il 20 luglio 2001, ore 16:00 circa I fatti del G8 di Genova furono una serie di eventi politici avvenuti nella città italiana di Genova a partire da giovedì 19 luglio sino a domenica 22 luglio 2001, contestualmente allo svolgimento della riunione del G8. Durante la riunione dei capi di governo degli otto maggiori paesi industrializzati svoltasi nel capoluogo ligure da venerdì 20 luglio a domenica 22 luglio 2001 e nei...

 

New Zealand politician The HonourableNikki KayeKaye in 2014Deputy Leader of the OppositionIn office22 May 2020 – 14 July 2020LeaderTodd MullerPreceded byPaula BennettSucceeded byGerry BrownleeDeputy Leader of the National PartyIn office22 May 2020 – 14 July 2020LeaderTodd MullerPreceded byPaula BennettSucceeded byGerry Brownlee46th Minister of EducationIn office2 May 2017 – 26 October 2017Prime MinisterBill EnglishPreceded byHekia ParataSucceeded byChris Hipki...

Questa voce o sezione sull'argomento fumettisti italiani non cita le fonti necessarie o quelle presenti sono insufficienti. Puoi migliorare questa voce aggiungendo citazioni da fonti attendibili secondo le linee guida sull'uso delle fonti. Sergio Zaniboni Sergio Zaniboni (Torino, 4 agosto 1937 – Giaveno, 18 agosto 2017[1]) è stato un fumettista italiano. Zaniboni è stato uno dei più apprezzati cartoonist italiani e, in particolare, tra quelli che hanno lavorato su Diabolik....

 

Aspect of equine anatomy This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Horse teeth – news · newspapers · books · scholar · JSTOR (September 2018) (Learn how and when to remove this message) The equine dental arcade, showing the front incisors, the interdental space before the first premolars The skull of a...

 

هذه المقالة يتيمة إذ تصل إليها مقالات أخرى قليلة جدًا. فضلًا، ساعد بإضافة وصلة إليها في مقالات متعلقة بها. (يونيو 2019) ألان تشارلزورث   معلومات شخصية الميلاد 17 سبتمبر 1903   الوفاة 21 سبتمبر 1978 (75 سنة)   غلن أيريس  [لغات أخرى]‏  مواطنة أستراليا  الحياة العملية ا�...

Canadian provincial election 1912 Saskatchewan general election ← 1908 July 11, 1912 (1912-07-11) 1917 → ← outgoing membersmembers →54 seats in the Legislative Assembly of Saskatchewan28 seats needed for a majority   First party Second party   CON Leader Thomas Walter Scott Wellington Willoughby Party Liberal Conservative Leader since August 16, 1905 1912 Leader's seat Swift Current Moose Jaw City Last electio...

 

Tiga Puluh Sembilan Pasal Gereja Anglikan adalah pernyataan bersejarah dari doktrin Gereja Anglikan saat Reformasi Inggris. Berikut ini adalah isinya:[1] Disetujui oleh para uskup agung, uskup, dan semua pendeta di provinsi Canterbury dan York pada tahun 1562 di London. 1. Tentang Iman kepada Tritunggal Kudus Ada satu Allah saja yang hidup dan sejati, kekal, tanpa badan, bagian, atau penderitaan; dengan kekuasaan, kebijaksanaan, dan kebaikan tidak terbatas. Dia adalah Pencipta dan Pel...

 

1971 United States Grand Prix Race detailsDate October 3, 1971 (1971-10-03)Official name XIV United States Grand PrixLocation Watkins Glen Grand Prix Race CourseWatkins Glen, New YorkCourse Permanent road courseCourse length 5.435 km (3.377 miles)Distance 59 laps, 320.67 km (199.24 miles)Weather DryPole positionDriver Jackie Stewart Tyrrell-FordTime 1:42.642Fastest lapDriver Jacky Ickx FerrariTime 1:43.474 on lap 43PodiumFirst François Cevert Tyrrell-FordSecond Jo Siffert BRM...

Biological process in primates Breast development, also known as mammogenesis, is a complex biological process in primates that takes place throughout a female's life. It occurs across several phases, including prenatal development, puberty, and pregnancy. At menopause, breast development ceases and the breasts atrophy. Breast development results in prominent and developed structures on the chest known as breasts in primates, which serve primarily as mammary glands. The process is mediated by...

 

blanc Situation Bassin Gange-Brahmapoutre-Meghna Pays Tibet, Népal, Inde, Bangladesh Caractéristiques Déversoir le Golfe du Bengale, Océan Indien Principaux cours d'eau Brahmapoutre Superficie ?km2 modifier  Le bassin du Brahmapoutre fait partie du Bassin Gange-Brahmapoutre-Meghna qui draine 1 086 000 kilomètres carrés au Tibet, au Népal, en Inde et au Bangladesh. La Jamuna-Brahmapoutre, long de 292 km, s'étend du nord du Bangladesh jusqu'à sa confluence ave...