Journal of Experimental Marine Biology and Ecology, 2006
To simulate an anthropogenic loading, experimental N and P enrichment was performed on a Posidoni... more To simulate an anthropogenic loading, experimental N and P enrichment was performed on a Posidonia oceanica meadow in the western Mediterranean Sea (Calvi, Corsica, France) during an annual cycle. The aim was to assess the morphological responses of the plant and the impact on the epiphytic index in order to test those parameters as indicators of coastal nutrient enrichment. Monthly
Mapping marine biocenoses is an efficient method for providing useful data for the management and... more Mapping marine biocenoses is an efficient method for providing useful data for the management and conservation of Mediterranean lagoons. Fused images from two satellites, SPOT 5 and IKONOS, were tested as management tools for identifying specific ecosystems in the El Bibane lagoon, situated in southern Tunisia near the Libyan border. The objectives of this study were to provide a precise
Annual primary production of Posidonia oceanica shallow meadows was investigated in four sites: t... more Annual primary production of Posidonia oceanica shallow meadows was investigated in four sites: two situated along island coastlines (Corsica and Sardinia) and two along continental coastlines (France and Tunisia). The number of leaves produced per year ranged from 7.0 (Corsica) to 8.1 (Sardinia). The leaf production (blade and sheath) ranged from 919.3 to 2055.7 mg DW.yr-1.shoots-1 and rhizome production from 27.7 to 150.7 mg DW.yr-1.shoots-1. Both island stations are characterized by a high rhizome growth and production and a low leaf production.
Within the framework of the preservation and the management of Mediterranean
biodiversity, mapp... more Within the framework of the preservation and the management of Mediterranean
biodiversity, mapping tools are very useful to evaluate and inventory key ecosystems and
natural formation World Heritage. Historical data concerning the El Bibane lagoon,
situated in the Tunisian South near the Libyan border, mentions various ecosystems as
Neogoniolithon notarisii reef platform and seagrass meadows. Two satellites image,
IKONOS and SPOT 5, were tested as management tools to identify these specific
ecosystems. The IKONOS satellite, launched in September 1999, and the SPOT 5 satellite,
launched in May 2002, which provide multispectral fused imagery with different spatial
resolution (0.6 m and 2.5 m), were used. Classifications were made of both satellite’s
image. Seagrass meadows appear as the most important ecosystem, whereas the
Neogoniolithon notarisii reef constitutes a thin structure lining the north coast of the
lagoon. SPOT 5 and IKONOS satellites provide different results which can be both
satisfactory according to the aim of the study.
Journal of Experimental Marine Biology and Ecology, 2006
To simulate an anthropogenic loading, experimental N and P enrichment was performed on a Posidoni... more To simulate an anthropogenic loading, experimental N and P enrichment was performed on a Posidonia oceanica meadow in the western Mediterranean Sea (Calvi, Corsica, France) during an annual cycle. The aim was to assess the morphological responses of the plant and the impact on the epiphytic index in order to test those parameters as indicators of coastal nutrient enrichment. Monthly
Mapping marine biocenoses is an efficient method for providing useful data for the management and... more Mapping marine biocenoses is an efficient method for providing useful data for the management and conservation of Mediterranean lagoons. Fused images from two satellites, SPOT 5 and IKONOS, were tested as management tools for identifying specific ecosystems in the El Bibane lagoon, situated in southern Tunisia near the Libyan border. The objectives of this study were to provide a precise
Annual primary production of Posidonia oceanica shallow meadows was investigated in four sites: t... more Annual primary production of Posidonia oceanica shallow meadows was investigated in four sites: two situated along island coastlines (Corsica and Sardinia) and two along continental coastlines (France and Tunisia). The number of leaves produced per year ranged from 7.0 (Corsica) to 8.1 (Sardinia). The leaf production (blade and sheath) ranged from 919.3 to 2055.7 mg DW.yr-1.shoots-1 and rhizome production from 27.7 to 150.7 mg DW.yr-1.shoots-1. Both island stations are characterized by a high rhizome growth and production and a low leaf production.
Within the framework of the preservation and the management of Mediterranean
biodiversity, mapp... more Within the framework of the preservation and the management of Mediterranean
biodiversity, mapping tools are very useful to evaluate and inventory key ecosystems and
natural formation World Heritage. Historical data concerning the El Bibane lagoon,
situated in the Tunisian South near the Libyan border, mentions various ecosystems as
Neogoniolithon notarisii reef platform and seagrass meadows. Two satellites image,
IKONOS and SPOT 5, were tested as management tools to identify these specific
ecosystems. The IKONOS satellite, launched in September 1999, and the SPOT 5 satellite,
launched in May 2002, which provide multispectral fused imagery with different spatial
resolution (0.6 m and 2.5 m), were used. Classifications were made of both satellite’s
image. Seagrass meadows appear as the most important ecosystem, whereas the
Neogoniolithon notarisii reef constitutes a thin structure lining the north coast of the
lagoon. SPOT 5 and IKONOS satellites provide different results which can be both
satisfactory according to the aim of the study.
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Papers by Alexandre Vela
biodiversity, mapping tools are very useful to evaluate and inventory key ecosystems and
natural formation World Heritage. Historical data concerning the El Bibane lagoon,
situated in the Tunisian South near the Libyan border, mentions various ecosystems as
Neogoniolithon notarisii reef platform and seagrass meadows. Two satellites image,
IKONOS and SPOT 5, were tested as management tools to identify these specific
ecosystems. The IKONOS satellite, launched in September 1999, and the SPOT 5 satellite,
launched in May 2002, which provide multispectral fused imagery with different spatial
resolution (0.6 m and 2.5 m), were used. Classifications were made of both satellite’s
image. Seagrass meadows appear as the most important ecosystem, whereas the
Neogoniolithon notarisii reef constitutes a thin structure lining the north coast of the
lagoon. SPOT 5 and IKONOS satellites provide different results which can be both
satisfactory according to the aim of the study.
biodiversity, mapping tools are very useful to evaluate and inventory key ecosystems and
natural formation World Heritage. Historical data concerning the El Bibane lagoon,
situated in the Tunisian South near the Libyan border, mentions various ecosystems as
Neogoniolithon notarisii reef platform and seagrass meadows. Two satellites image,
IKONOS and SPOT 5, were tested as management tools to identify these specific
ecosystems. The IKONOS satellite, launched in September 1999, and the SPOT 5 satellite,
launched in May 2002, which provide multispectral fused imagery with different spatial
resolution (0.6 m and 2.5 m), were used. Classifications were made of both satellite’s
image. Seagrass meadows appear as the most important ecosystem, whereas the
Neogoniolithon notarisii reef constitutes a thin structure lining the north coast of the
lagoon. SPOT 5 and IKONOS satellites provide different results which can be both
satisfactory according to the aim of the study.