Perifíton

Perifíton é a fina camada de seres vivos, ou seus detritos, que colonizam superfícies sólidas em habitats aquáticos, tanto em água doce, como no mar^[1].

O nome desta comunidade tem origem no grego peri, "à volta", e phytos, "planta", porque foram inicialmente estudadas as associações que se acumulavam sobre as folhas submersas de macrófitas aquáticas ou de plantas terrestres vizinhas. No entanto, podem também desenvolver-se nas superfícies de rochas submersas nuas ou nas conchas e carapaças de vários animais aquáticos.

Estas associações são principalmente formadas por protistas, como as diatomáceas e outros microrganismos tradicionalmente classificados entre as algas e, por isso, são uma importante fonte de produção primária nos ecossistemas aquáticos, principalmente nas zonas costeiras e nos lagos. No entanto, não são apenas os seres autotróficos os responsáveis pela produtividade desta comunidade: os seus cadáveres tornam-se um substrato orgânico, onde se desenvolvem bactérias e protistas heterotróficos. Todo este conjunto atrai pequenos crustáceos e vermes, alguns dos quais se tornam residentes e torna-se uma fonte de alimentação para pequenos peixes ou outros organismos do nécton que vivem no mesmo ecossistema.

O estudo destas comunidades pode fornecer importantes informações sobre a produtividade de um ecossistema aquático para a aquacultura, ou sobre eventuais poluentes que afectem uma massa de água costeira ou lacustre.

Referências

↑ Carlos, Viviane Moschini “Perifíton”, no site da autora, investigadora do Departamento de Ecologia da Universidade de São Paulo, Brasil acessado a 12 de agosto de 2009

Ver também

Este artigo sobre Ecologia é um esboço. Você pode ajudar a Wikipédia expandindo-o.

Read other articles:

Kementerian Pencerahan Rakyat dan Propaganda Reich

Artikel atau sebagian dari artikel ini mungkin diterjemahkan dari Reich Ministry of Public Enlightenment and Propaganda di en.wikipedia.org. Isinya masih belum akurat, karena bagian yang diterjemahkan masih perlu diperhalus dan disempurnakan. Jika Anda menguasai bahasa aslinya, harap pertimbangkan untuk menelusuri referensinya dan menyempurnakan terjemahan ini. Anda juga dapat ikut bergotong royong pada ProyekWiki Perbaikan Terjemahan. (Pesan ini dapat dihapus jika terjemahan dirasa sudah cuk...

Deisme Inggris

Lukisan John Locke tahun 1697, oleh Sir Gotfrey Kneller Deisme adalah satu ajaran pencerahan pada ke-18 yang memandang bahwa selain Alkitab, akal budi menjadi sarana bagi manusia untuk mengenal Allah.[1] Ajaran tradisional yang menekankan kemanusiaan Yesus.[1] Ajaran ini menghasilkan sikap toleransi sesuai eksistensi manusia sosial dan rasional.[2] Ajaran pencerahan yang mengungkapkan manusia tidak perlu tunduk kepada segala hal yang ada di luar dirinya sendiri.[1&...

Impédance (électricité)

Pour les articles homonymes, voir Impédance. L'impédance électrique mesure l'opposition d'un circuit électrique au passage d'un courant alternatif sinusoïdal. La définition de l'impédance est une généralisation de la loi d'Ohm au courant alternatif. On passe de R = U I {\displaystyle R={\frac {U}{I}}} à Z = U I {\displaystyle Z={\frac {U}{I}}} , mais avec U {\displaystyle U} et I {\displaystyle I} de formes sinusoïdales. Le mot impédance fut inventé par Oliver Heaviside en juill...

1934 United States Senate election in Missouri

1934 United States Senate election in Missouri ← 1928 November 6, 1934 1940 → Nominee Harry S. Truman Roscoe C. Patterson Party Democratic Republican Popular vote 787,110 524,954 Percentage 59.55% 39.71% County ResultsTruman: 40–50% 50–60% 60–70% 70–80% 80–90% >90% Patt...

Синелобый амазон

Синелобый амазон Научная классификация Домен:ЭукариотыЦарство:ЖивотныеПодцарство:ЭуметазоиБез ранга:Двусторонне-симметричныеБез ранга:ВторичноротыеТип:ХордовыеПодтип:ПозвоночныеИнфратип:ЧелюстноротыеНадкласс:ЧетвероногиеКлада:АмниотыКлада:ЗавропсидыКласс:Пт�...

Mitsuru Adachi

Mitsuru Adachiあだち充Lahir安達充9 Februari 1951 (umur 73)Isesaki, Prefektur GunmaKebangsaan JepangPendidikanAsisten Shinji Nagashima Asisten Isami IshiiDikenal atasMangaKarya terkenalTouchH2Katsu!Cross GameQ and AGerakan politikMangaPenghargaanPenghargaan Manga Shogakukan (1983, 2009) Bagian dari seri tentangAnime dan manga Anime Sejarah Industri Animasi net orisinal Animasi video orisinal Fansub Fandub Perusahaan Seri terpanjang Daftar Manga Sejarah Pasar internasional Mangaka...

Nabeel Rajab

Nabeel RajabNabeel di kantornyaLahirNabeel Ahmed Rajab1 Januari 1964 (umur 60)BahrainTempat tinggalBani Jamra, BahrainPendidikanSarjana Sains Politik dan Sejarah dari Universitas PunePekerjaanAktivis HAMTahun aktif1988–sekarangAnakAdam and MalakSitus webBahrain Rights Facebook Twitter Nabeel Ahmad Abdurasool Rajab (Arab: نبيل أحمد عبدالرسول رجب) adalah seorang aktivis hak asasi manusia Bahrain dan penentang oposisi. Ia adalah presiden Pusat Hak Asasi Manus...

ريما بنت بندر بن سلطان آل سعود

صاحبة السمو الملكي الأميرة ريما بنت بندر بن سلطان آل سعود سفيرة خادم الحرمين الشريفين في الولايات المتحدة تولت المنصب23 فبراير 2019 العاهل سلمان بن عبد العزيز آل سعود خالد بن سلمان آل سعود معلومات شخصية اسم الولادة ريما بنت بندر بن سلطان بن عبد العزيز آل سعود الميلاد 1975 (ا...

Kim Ji-yeon

Untuk orang lain dengan nama yang sama, lihat Kim Ji-yeon (disambiguasi). Dalam nama Korean ini, nama keluarganya adalah Kim. Kim Ji-yeon김지연Informasi pribadiNegara Korea SelatanLahir12 Maret 1988 (umur 36)Busan, Korea SelatanSenjataSabreTanganleft-handedTinggi badan1.65 mBerat badan57 kgTotal tahun di tim nasional2009–sekarangPelatih tim nasionalHan Joo-yeolKlubIksan City GovernmentPelatih kepalaLee Soo-geun Rekam medali Olimpiade 2012 London Individual 2020 Tokyo Team World...

Merced metro station

Mexico City metro station MercedSTC rapid transitGeneral informationLocationMerced Balbuena, Venustiano CarranzaMexico CityMexicoCoordinates19°25′32″N 99°07′29″W / 19.425558°N 99.124639°W / 19.425558; -99.124639Operated bySistema de Transporte Colectivo (STC)Line(s) (Observatorio - Pantitlán)Platforms2 side platformsTracks2Connections La Merced ConstructionStructure typeUndergroundPlatform levels1ParkingNoBicycle facilitiesNoOther informationStatusIn servi...

Viktor Zhdanov

Soviet virologist and epidemiologist For the Stalinist politician, see Andrei Zhdanov. For the Russian footballer, see Andrei Zhdanov (footballer). Viktor ZhdanovВіктор ЖдaновBorn(1914-02-14)February 14, 1914Stepino, Yekaterinoslav Governorate, Russian Empire(now Sviatohorivka, Donetsk Oblast, Ukraine)DiedJuly 14, 1987(1987-07-14) (aged 73)Moscow, Russian SFSR, Soviet UnionResting placeKuntsevo CemeteryCitizenshipRussian Empire, Soviet UnionAlma materKharkiv Medical Insti...

Social exclusion

Marginalisation redirects here. For the concept in probability, see Marginal distribution. Form of social disadvantage and relegation to the fringe of society This article is written like a personal reflection, personal essay, or argumentative essay that states a Wikipedia editor's personal feelings or presents an original argument about a topic. Please help improve it by rewriting it in an encyclopedic style. (July 2016) (Learn how and when to remove this message) Part of a series onCommunit...

City Attorney of San Francisco

This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: City Attorney of San Francisco – news · newspapers · books · scholar · JSTOR (September 2019) (Learn how and when to remove this message) Not to be confused with the District Attorney of San Francisco. San Francisco City Attorney's OfficeOffice overviewFormed1899 (1899)Prec...

Every Child (film)

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages) This article possibly contains original research. Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed. (October 2007) (Learn how and when to remove this message) This article relies largely or entirely on a single source. Relevant discussion may be foun...

Sevilla Fútbol Club

Sevilla FCCalcio Sevillistas, Rojiblancos, Nervionenses, Palanganas[1] Segni distintiviUniformi di gara Casa Trasferta Colori sociali Bianco e rosso Dati societariCittàSiviglia Nazione Spagna ConfederazioneUEFA Federazione RFEF CampionatoPrimera División Fondazione1890 Proprietario Francisco Paciel Presidente José María del Nido Carrasco Allenatore Quique Sánchez Flores StadioRamón Sánchez-Pizjuán(42.714 posti) Sito webwww.sevillafc.es Palmarès Titoli di Spagna1 Trofei n...

Szczecin Lagoon

Estuary on the Polish-German border This article is about a lagoon in Poland. For a bay in Papua New Guinea named after Szczecin (Stettin), see Stettin Bay. Oder Lagoon - Landsat satellite photo (circa 2000) The German fishing village of Altwarp on the Lagoon Szczecin Lagoon, view from Polish island of Karsibór Szczecin Lagoon (Polish: Zalew Szczeciński, German: Stettiner Haff), also known as Oder Lagoon (German: Oderhaff), and Pomeranian Lagoon (German: Pommersches Haff), is a lagoon in th...

Trinidad, California

City in California, United States City in California, United StatesTrinidad, CaliforniaCityA view of Trinidad from a trail on nearby Trinidad Head on May 27, 2006.Location in Humboldt County and the state of CaliforniaA 2007 view of the coastline south of Trinidad overlooking Trinidad Bay with offshore rocks; part of the California Coastal National Monument.TrinidadLocation in the United StatesShow map of Northern CaliforniaTrinidadTrinidad (California)Show map of CaliforniaTrinidad...

The Story of Civilization

11-volume set of books covering Western history The Story of Civilization A set of all 11 volumesAuthorWill DurantAriel DurantLanguageEnglishSubjectHistoryPublished1935–1975PublisherSimon & SchusterPublication placeUnited StatesPages13,549ISBN978-1567310238 The Story of Civilization (1935–1975), by husband and wife Will and Ariel Durant, is an 11-volume set of books covering both Eastern and Western civilizations for the general reader, with a particular emphasis on European (Western)...

Francesca Muzio

Questa voce o sezione sull'argomento attori 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. Segui i suggerimenti del progetto di riferimento. Francesca Muzio Francesca Muzio (Roma, 12 maggio 1952) è un'attrice italiana. Indice 1 Biografia 2 Filmografia 2.1 Cinema 2.2 Televisione 3 Teatro 4 Radio 5 Opere 6 Altri progetti 7 Collegamenti esterni B...

List of Nazis (S–Z)

Part of a series onNazism Organizations Ahnenerbe Geheime Staatspolizei Deutsches Jungvolk Hitler Youth League of German Girls NSDÄB NSDStB NSRL NSFK NSKK NSF Nationalsozialistische Monatshefte Nazi Party Sturmabteilung (SA) Schutzstaffel (SS) History Early timeline National Socialist Program Hitler's rise to power Machtergreifung German rearmament Nazi Germany Religion in Nazi Germany Kirchenkampf Adolf Hitler's cult of personality Enabling Act of 1933 Night of the Long Knives Nuremberg ra...