�tude des bioc�noses marines du Cap Corse

Molinier, Roger

doi:10.1007/bf00239683

Cited by 27 publications

(7 citation statements)

References 16 publications

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“…The development of Lr_b seems to be restricted to particular places, such as the Menorca Channel. Hence, its growth is probably determined by the presence of a detritic bottom composed of rhodoliths, dim light conditions, low and constant water temperature (about 14 ° C), and unidirectional and constant currents (Molinier 1960 , P é r è s and Picard 1964, Giaccone 1967, 1971. In fact, the lower limit of L. rodriguezii distribution seems to depend on light availability, whereas the upper limit probably depends on temperature (UNEP/UICN/GIS Posidonie 1990 ).…”

Section: Discussionmentioning

confidence: 99%

“…Later, diverse authors highlighted the high biodiversity and reported different assemblage types such as Laminaria rodriguezii beds, ma ë rl beds, and free-living Peyssonnelia beds ( P é r è s and Picard 1963, 1964, Picard 1965, Giaccone 1973, Augier and Boudouresque 1978, Bourcier 1982, Ballesteros et al 1993. Besides this major literature, other significant studies have focused on ma ë rl ( Dieuzede 1940, Feldmann 1943, Gautier and Picard 1957, Jacquotte 1961, 1962, Ballesteros 1988, Basso 1995a,b , Bordehore et al 2003, Piazzi et al 2003, Agnesi et al 2011, L. rodriguezii beds (Feldmann 1934, Molinier 1956, 1960, and Peyssonnelia beds (Huv é 1954, Carpine 1958, Laborel et al 1961, Ballesteros 1994 ). However, all these different assemblage types have been described separately, and although they have several species in common, no attempts have been made to find out whether they are different and can be distinguished by statistical methods.…”

Section: Introductionmentioning

confidence: 99%

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Deep-water macroalgal-dominated coastal detritic assemblages on the continental shelf off Mallorca and Menorca (Balearic Islands, Western Mediterranean)

Joher

Ballesteros²,

Cebrián³

et al. 2012

Botanica Marina

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Abstract:We present a quantitative physiognomic characterization of major macroalgal-dominated assemblages on coastal detritic bottoms of the continental shelf off Mallorca and Menorca (Balearic Islands, Western Mediterranean). In late spring of 2007 and 2008, 29 samples were collected by bottom trawling at depths between -52 and -93 m. These samples were then sorted and identified to their lowest taxonomic level. Statistical analyses distinguished six different assemblage types: shallower water environments (-52 to -65 m in depth) were characterized by Osmundaria volubilis and Phyllophora crispa meadows and two types of Peyssonnelia beds; two assemblage types, Laminaria rodriguezii beds and ma ë rl beds, were only present in deep-water environments (-77 to -81 m); and an assemblage dominated by P. crispa and Halopteris filicina was found in both shallow and deep waters (-57 to -93 m). We assess the distribution of these six assemblage types through the studied area.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Deep-water macroalgal-dominated coastal detritic assemblages on the continental shelf off Mallorca and Menorca (Balearic Islands, Western Mediterranean)

Joher

Ballesteros²,

Cebrián³

et al. 2012

Botanica Marina

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“…Data of L. rodriguezii from Corse and Tunisia were derived mainly from Boudouresque and Perret (1977) who summarised data from past sources (Molinier 1960;Fredj 1972). Most of these data are qualitative records of the presence of L. rodriguezii obtained during diving expeditions at depths between 70 and 130 m. The only recent records of presence were at fishing grounds in Tunisia (Quetglas and Morales-Nin 2004, average depths 75-80 m) and its observation during a diving at 70 m at the Banc du Magaud (Pedel and Fabri 2011).…”

Section: Iberian Peninsula Mediterranean and Adriatic Seamentioning

confidence: 99%

Status, trends and drivers of kelp forests in Europe: an expert assessment

Araújo

Assis

Aguillar³

et al. 2016

Biodivers Conserv

114

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A comprehensive expert consultation was conducted in order to assess the status, trends and the most important drivers of change in the abundance and geographical distribution of kelp forests in European waters. This consultation included an on-line questionnaire, results from a workshop and data provided by a selected group of experts working on kelp forest mapping and eco-evolutionary research. Differences in status and trends according to geographical areas, species identity and small-scale variations within the same habitat where shown by assembling and mapping kelp distribution and trend data. Significant data gaps for some geographical regions, like the Mediterranean and the southern Iberian Peninsula, were also identified. The data used for this study confirmed a general trend with decreasing abundance of some native kelp species at their southern distributional range limits and increasing abundance in other parts of their distribution (Saccharina latissima and Saccorhiza polyschides). The expansion of the introduced species Undaria pinnatifida was also registered. Drivers of observed changes in kelp forests distribution and abundance were assessed using experts' opinions. Multiple possible drivers were identified, including global warming, sea urchin grazing, harvesting, pollution and fishing pressure, and their impact varied between geographical areas. Overall, the results highlight major threats for these ecosystems but also opportunities for conservation. Major requirements to ensure adequate protection of coastal kelp ecosystems along European coastlines are discussed, based on the local to regional gaps detected in the study.

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“…Several species are endemic to the Mediterranean Basin, that is considered the hot-spot for Cystoseira species [4], some of the most important marine ecosystem-engineers, forming extended canopies comparable to land forests [5]. They increase threedimensional complexity and spatial heterogeneity of rocky bottoms, providing refuge and food for many invertebrates and fishes at different life history stages [6][7][8][9][10][11][12][13]. Cystoseira forests, hence, play an important functional role in Mediterranean coastal ecosystems, sustaining complex food webs and maintaining a high biodiversity.…”

Section: Introductionmentioning

confidence: 99%