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Algal flora associated with a Halophila stipulacea (Forsskal) Ascherson (Hydrocharitaceae, Helobiae) stand in the western Mediterranean ArchiMer
Rindi, F; Maltagliati, F; Rossi, F; Acunto, S; Cinelli, F.
Halophila stipulacea, a seagrass introduced into the Mediterranean Sea as a Lessepsian immigrant, is nowadays common in the eastern Mediterranean, and it was recently recorded in the western Mediterranean; very little information is available about the algal flora associated with this species. During a survey of a Halophila stipulacea stand at Vulcano Island (Eolian Islands, western Mediterranean), samples were collected at three depths (5 m, 15 m and 25 m) for identification of algal epiphytes. Thirty-six species of macroalgae were found. The epiflora of the leaves consisted of 20 species, the others being mixed with or entangled in the rhizomes. On the leaves, Ceramium tenerrimum, Dasya corymbifera, Polysiphonia cfr. tenerrima, Spyridia filamentosa,...
Tipo: Text Palavras-chave: Halophila stipulacea; Épiphytes algaux; Épiphytisme; Algues marines; Méditerranée occidentale; Halophila stipulacea; Seagrass epiphytes; Epiphytism; Marine algae; Western Mediterranean.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/00325/43605/43924.pdf
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Mapping of Posidonia oceanica beds around Elba Island (western Mediterranean) with integration of direct and indirect methods ArchiMer
Piazzi, L; Acunto, S; Cinelli, F.
Direct and indirect methods were used for mapping Posidonia oceanica beds around Elba Island. Side scan sonar and a visual infra red scanner were used to detect the extension of beds. Also, direct observations were adopted to assess the bed density and to calibrate the indirect methods. Samples of P. oceanica were collected and phenological variables and macroalgal epiphytes were studied to assess the health of the beds. P. oceanica around Elba Island covered an area of 3 680 ha. The largest beds occupied the four main gulfs of the island, characterized by gentle slopes and sandy bottoms. There, the beds showed uniform cover while a patchy structure was common on the rocky and steep bottoms of the western and south-eastern coasts of the island. P. oceanica...
Tipo: Text Palavras-chave: Posidonia oceanica; Algues; Cartographie; Sonar latéral; Télédétection aérienne; Méditerranée; Posidonia oceanica; Seagrass; Algae; Mapping; Airborne teledetection; Mediterranean.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/00324/43567/44064.pdf
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