È caratterizzato dalla presenza di rizomi plagiotropi che finiscono improvvisamente. Ancora oggi è considerata nu rimedio della nonna, il motivo? Oggi ne è studiato un possibile utilizzo nel settore dell’agrotecnologia: come fertilizzante e per la produzione di biogas. Durante l’inverno, verso il centro del cespo, si producono nuove foglie verdi che riprendono attività fotosintetica. Le foglie sono lunghe, fasciate e di un color verde brillante. In Gaul, he studied the Celts. Posidonius is a lunar impact crater that is located on the north-eastern edge of Mare Serenitatis, to the south of Lacus Somniorum. Ptolemy, 200 years later, chose the Posidonius estimate, thus perpetuating the error all the way into the fifteenth century. In altre località, la posidonia raccolta sulla spiaggia, portata dalle correnti d’acqua e ormai in decomposizione, può essere raccolta per essere usata come materia organica per la produzione di biogas o come base per il compostaggio, impiego che in Italia è vietato. Other Romans who visited Posidonius in Rhodes were Velleius, Cotta, and Lucilius. Home » Informazione » Ricerche » Posidonia oceanica. stima la biomassa prodotta negli anni, sia in termini di allungamento dei rizomi, sia di produzione di foglie; stima la produzione dei fiori e quindi fornisce informazioni sul numero dei fenomeni di riproduzione sessuata avvenuti negli anni; Questa pagina è stata modificata per l'ultima volta il 29 ago 2020 alle 14:17. La pianta può raggiungere una lunghezza di 140 – 150 cm, la parte inferiore della posidonia oceanica è lignificato e può raggiungere una lunghezza di 15 cm. La posidonia oceanica forma dei prati sottomarini enormi che hanno un importanza ecologica notevole. Thinking that the Moon was a mixture of air and fire, he attributed the cause of the tides to the heat of the Moon, hot enough to cause the water to swell but not hot enough to evaporate it. Le cosiddette olive di mare costituiscono il frutto di questa pianta. Atti del XIII Congresso Nazionale della Società Italiana di Ecologia, Una barriera soffolta è una struttura posta sotto la superficie del mare, parallelamente alla costa, e che ha lo scopo di smorzare la forza delle onde e che ha un minor, La regression des herbiers à Posidonia oceanica, International Workshop on Posidonia oceanica beds, Regression of a Tyrrhenian Posidonia oceanica praire exposed to nearshore trawling, Rapport et Prôcess verbeaux de Réunion CIESM, Effetti degli ancoraggi sulla prateria a Posidonia oceanica della Riserva marina isola di Ustica: Dati preliminari, Variability in patterns of growth and morphology of Posidonia oceanica exposed to urban and industrial wastes: contrasts with two reference locations, Journal of Experimental Marine Biology and Ecology, Ruptures d'équilibre au littoral de la Provence occidentale, l'action des tempêtes, relations avec les aménagements littoraux sur les equilibries sedimentaires, et en particulier sur l'herbier a Posidonia oceanica, Changes and degradation in a Posidonia oceanica bed invaded by introduced tropical alga Caulerpa taxifolia in the North Western Mediterranean, Response of the non-indigenous Caulerpa racemosa (Forsskal) J. Agardh tho the native seagrass Posidonia oceanica (L.) Delile: effect of density of shoots and orientation of edges of meadows, Journal of experimental marine biology and ecology, Contribution à la description et à la phénologie des herbiers à Posidonia oceanica (L.) Delile, Thèse Doctorat 3ème Cycle, Univ. Posidonius's orrery, according to Cicero, exhibited the diurnal motions of the Sun, Moon, and the five known planets.[13]. MondoMarino.net: La riproduzione del polpo comune, ITIS Standard Report Page: Posidonia oceanica, D.Lgs. [15] Pliny the Elder mentions Posidonius among his sources and without naming him reported his method for estimating the Earth's circumference. Some fragments of his writings on astronomy survive through the treatise by Cleomedes, On the Circular Motions of the Celestial Bodies, the first chapter of the second book appearing to have been mostly copied from Posidonius. He attempted to create a unified system for understanding the human intellect and the universe which would provide an explanation of and a guide for human behavior. Posidonius's writings on the Jews were probably the source of Diodorus Siculus's account of the siege of Jerusalem and possibly also for Strabo's. His influence on philosophical thinking lasted until the Middle Ages, as is shown by citation in the Suda, the massive medieval lexicon. For example, Posidonius considered the climate of Arabia and the life-giving strength of the sun, tides (taken from his book on the oceans), and climatic theory to explain people's ethnic or national characters. Although a firm Stoic, Posidonius was, like Panaetius and other Stoics of the middle period, eclectic. and desiderative (desires for sex and food). He wrote a geographic treatise on the lands of the Celts which has since been lost, but which is referred to extensively (both directly and otherwise) in the works of Diodorus of Sicily, Strabo, Caesar and Tacitus' Germania. Cicero in his De Finibus closely followed Posidonius's presentation of Panaetius's ethical teachings. Posidonius fortified the Stoicism of the middle period with contemporary learning. In addition to the rational faculties, Posidonius taught that the human soul had faculties that were spirited (anger, desires for power, possessions, etc.) Posidonius also calculated the size and distance of the Moon. 5. For Posidonius, philosophy was the dominant master art and all the individual sciences were subordinate to philosophy, which alone could explain the cosmos. In Rhodes, Posidonius actively took part in political life, and his high standing is apparent from the offices he held. alga]. For Posidonius "history" extended beyond the earth into the sky; humanity was not isolated each in its own political history, but was a part of the cosmos. alga (ant. Al contrario delle foglie delle piante emerse, quelle della posidonia non presentano stomi: gli scambi gassosi avvengono per diffusione e la pianta può assorbire nutrimenti anche attraverso le foglie (e non solo attraverso la radice rizomatosa). This theory was not solely scientific, but also had political implications—his Roman readers were informed that the climatic central position of Italy was an essential condition of the Roman destiny to dominate the world. This was the number used by Christopher Columbus to underestimate the distance to India as 70,000 stades.[16]. He noted, however, that Hipparchus had added some 26,000 stadia to Eratosthenes's estimate. Secondo la Parte IV del Testo Unico Ambientale, le foglie di Posidonia sulla spiaggia sono considerate rifiuti solidi e devono essere rimosse. 1492-Columbus sails to the Bahamas. had been right about the circumference, but along came someone named Posidonius (135-50 B.C.). Ha caratteristiche simili alle piante terrestri, ha radici, un fusto rizomatoso e foglie nastriformi lunghe fino ad un metro e unite in ciuffi di 6-7. Posidonius was informed in his approach to finding the Earth's circumference by Eratosthenes, who a century earlier arrived at a figure of 252,000 stadia; both men's figures for the Earth's circumference were uncannily accurate. In his Histories, Posidonius continued the World History of Polybius. In physics, Posidonius advocated a theory of cosmic "sympathy" (συμπάθεια, sumpatheia), the organic interrelation of all appearances in the world, from the sky to the earth, as part of a rational design uniting humanity and all things in the universe, even those that were temporally and spatially separate. (adsbygoogle = window.adsbygoogle || []).push({}); (adsbygoogle = window.adsbygoogle || []).push({}); La posidonia oceanica è una specie marina endemica del Mediterraneo, per questo spesso è chiamata semplicemente posidonia mediterranea. Le foglie divengono marroni con il passare del tempo: in autunno le foglie diventano marroni e fotosinteticamente inattive. He attained the highest public office as one of the Prytaneis (presidents, having a six months tenure) of Rhodes. [...] A. marina, nome di due piante monocotiledoni primitive (Zostera marina e Posidonia oceanica), erbe perenni con lunghe foglie nastriformi, viventi completamente sommerse sulle coste ...Leggi Tutto He suggested changing the definition of parallel straight lines to an equivalent statement that would allow him to prove the fifth postulate. His studies were major investigations into their subjects, although not without errors. He was acclaimed as the greatest polymath of his age. Posidonius wrote on physics (including meteorology and physical geography), astronomy, astrology and divination, seismology, geology and mineralogy, hydrology, botany, ethics, logic, mathematics, history, natural history, anthropology, and tactics. Prima di trovare sostituti sintetici più efficienti, le sue proprietà e i suo benefici la rendevano utile anche in farmacologia: le foglie erano usate per preparare antinfiammatori e prodotti per curare le irritazioni. Nel Mediterraneo, la posidionia oceanica può essere un buon bioedicantore della qualità delle acque costiere. In this work, Posidonius detailed his theory of the effect on a people's character by the climate, which included his representation of the "geography of the races". [18] His Histories continue the account of the rise and expansion of Roman dominance, which he appears to have supported. Of Posidonius's work on tactics, The Art of War, the Greek historian Arrian complained that it was written 'for experts', which suggests that Posidonius may have had first hand experience of military leadership or, perhaps, used knowledge he gained from his acquaintance with Pompey. Oblique view of Posidonius from Apollo 17. Nella foto in basso puoi notare la sua radice rizomatosa. In measuring the size of the Sun, however, he reached a figure larger and more accurate than those proposed by other Greek astronomers and Aristarchus of Samos.[12]. He settled around 95 BCE in Rhodes, a maritime state which had a reputation for scientific research, and became a citizen. Società Benefit, e' vietata la ripubblicazione, anche parziale, dei contenuti pubblicati - P.IVA 08578340963, Green Coffee: funziona con queste avvertenze. 75/2010, Riordino e revisione della disciplina in materia di fertilizzanti, Voci in vetrina in altre lingue senza equivalente su it.wiki, https://it.wikipedia.org/w/index.php?title=Posidonia_oceanica&oldid=115204152, Template Webarchive - collegamenti all'Internet Archive, Voci con modulo citazione e parametro coautore, Errori del modulo citazione - citazioni che usano parametri ordinali sconosciuti, Voci entrate in vetrina nel mese di novembre 2007, licenza Creative Commons Attribuzione-Condividi allo stesso modo. La fruttificazione si verifica tra ottobre e dicembre. This was still too small by half. His vast body of work exists today only in fragments. It was named after ancient Greek philosopher and geographer Posidonius of Apamea. Fiorisce in autunno e in primavera produce frutti galleggianti volgarmente chiamati "olive di mare". Le foglie sono state usate, in passato, come isolante edilizio nella realizzazione dei tetti. Posidonius completed his higher education in Athens, where he was a student of the aged Panaetius, the head of the Stoic school. analisi e monitoraggio del limite inferiore; praterie in equilibrio: la densità è normale o eccezionale; praterie molto disturbate: la densità è anormale.

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