Abstract. Observations of the fish fauna of Posidonia oceanica (L.) DELILE seagrass beds were undertaken in two shallow stations and one deeper station in Port‐Cros National Park, between November 1984 and September 1987. Demographic structure, density and biomass of the 19 most abundant species or taxa were assessed by several non‐destruc...... hiện toàn bộ
Klaus Rützler, Deborah L. Santavy, Arnfried Antonius
Abstract. Some reef building corals in the western Atlantic are susceptible to an infection known as black band disease that is caused by the cyanophyte (cyanobacterium) Phormidium corallyticum Rützler & Santavy. Field observations on the barrier reef of Belize and on reefs of the Bermuda platform ...... hiện toàn bộ
AbstractSubmarine canyons are important sources of habitat heterogeneity on the slopes of continents and islands, but the study of canyon ecology has been largely restricted to continental margins. Here we use visual and video surveys from 36 submersible dives to evaluate the role of canyons as abundance and diversity hotspots for megafauna in the Hawaiian Archipel...... hiện toàn bộ
AbstractA giant pockmark colonised by dense cold‐seep assemblages near 3160 m depth along the Congo‐Angola margin has been surveyed by the ROV Victor 6000. The quantitative distribution of chemosynthetic communities was mapped along the dive tracks from a video study using GIS and image mosaicking. Several types of faunal assemblages, either dominated by bivalves o...... hiện toàn bộ
Abstract. Fishes associated with the seagrass Posidonia oceanica were censused both by skid trawl and visual counts around Ischia Island, Italy. Both sampling procedures were performed during the day in summer and in winter at two sites. Significant differences in the number of species, number of individuals, biomass, and trophic structure...... hiện toàn bộ
Dimitris Vafidis, Anthony R. Russo, Eleni Voultsiadou, Christos Arvanitidis, Despina Stefanidou
Abstract. The macrofaunas associated with the three morphologically different North Aegean Sea sponge species Agelas oroides, Aplysina aerophoba, and Axinella cannabina were compared. The faunal abundance was not related to sponge surface area for any of the three species. Each sponge species supported a signific...... hiện toàn bộ
Abstract. The relationship between a sponge, Callyspongia vaginalis, and an associated brittlestar, Ophiothrix lineata, was examined for mutualistic symbiotic interaction. Cinematography, feeding experiments, and analyses of stomach contents reveal that O. lineata (unlike other ... hiện toàn bộ
Abstract. During two expeditions with RV ‘Meteor’ in summer 1993 and winter 1997/98 the structural and functional diversity of the benthic system of the highly oligotrophic eastern Mediterranean deep sea was investigated. The macrofauna communities were dominated by polychaetes even at the deepest stations.The fauna at shallow stations was dominated...... hiện toàn bộ
Abstract. The composition of the algal diet of Siganus luridus was compared with that of the algal vegetation found in fish habitats along the Mediterranean coast of Israel. North‐south differences in the diet were found and reflected differences in the available algal resources as well as in algal species selected....... hiện toàn bộ
Abstract. Important intertidal sabellarian reefs are built by the polychaete Sabellaria alveolata (LINNÉ) in the Mont Saint‐Michel Bay in Normandy at Champeaux (France). Typical profiles and plans were done over a ten year period. At the same time, population dynamics were examined during the last six years. At this si...... hiện toàn bộ