1,720,992 research outputs found
Recruitment of Serpuloidea (Annelida: Polychaeta) in a marine cave of the Ionian Sea (Italy, central Mediterranean).
No full textArtificial panels have been displaced at different distances from the entrance in a submarine cave. the presence of Serpuloidea has been registered after 1, 3, 6, 12, and 24 months of panel exposition. A total of 18 species were listed, with the highest species richness at intermediate distance from the entrance. Serpuloidea confirmed to be the most important colonizers of harsh inner portion of the marine caves
Le grotte marine del Salento: censimento 2008
No full textil lavoro è una rassegna delle grotte sommerse censite e cartografate attorno al Salento meridionale. dall'ultimo aggiornamento del 1999 altre 24 grotte sono state aggiunte
Occurrence and distribution pattern of Palaemon spp.shrimps in a shallow submarine cave environment: a studycase in South-eastern Italy
No full textThe common shrimps of the genus Palaemon are often reported as living in
Mediterranean submarine caves. The present study quantifies the distribution
pattern of a Palaemon spp. populations throughout 1 year of observations in a
shallow submarine cave in South-eastern Italy, Ionian Sea. The cave was subdivided
into six sectors from the entrance towards the inner portion of the ‘blind
cave’ and 16 dives (four per season, during both day and night) were performed
with SCUBA equipment. The population was estimated in situ using
visual census. Four different species of Palaemon were identified. This study
has shown that Palaemon spp. assemblages live throughout the year in submarine
caves. Moreover, the results suggest submarine caves play an important role
in the biology of Palaemon spp. populations, by providing refuge, juvenile
recruitment and food resources
TROPHY DISCUS
No full textThe art of selecting, grooming, and showing of Cichlid fishes of the genus Discus is presented. Feeding, reproduction, rearing, and behaviour of such fresh water fishes are treated
Zooplankton composition in the lake Varano (Adriatic Sea coast, Italy)
No full textThe zooplankton composition of Lake Varano has been studied from June 2007 to May 2008 considering three sampling
stations (western, central, eastern). A total of 55 zooplankton categories were recognised, with medusae Aurelia aurita as the
main macroscopic species; 43 of them occurred in less than 50% of the 71 samples collected, highlighting the seasonal aspect
of the community. The remaining 12 categories, present in more than 50% of samples, were numerically dominated by the
copepod ‘Non Indigenous Species’ Acartia tonsa (reported here for the first time in the lake), which occurred throughout
the year. Maximal abundance of zooplankton was recorded in the eastern sampling station, while the lowest values were
recorded in the central one. The statistical analysis of data allowed us to establish a not sharp separation of the three
sampling stations, apart from isolated dates. The present zooplankton assemblage showed that about 40% of its components
differed from those recorded in a study of 18 years before. This last comparison is not easily referable to the ongoing climate
warming (the dominant species are of cold temperate origin) and analysis of uninterrupted time series could be useful to
understand the underlying reasons
Occurrence of the Guinean species Herbstia nitida Manning and Holthuis, 1981 (Crustacea: Decapoda: Brachiura) in a Mediterranean submarine cave and a comparison with the co-generic H. condyliata (Fabricius, 1787)
No full textA NEW SPECIES FOR THE MEDITERRANEAN HAS BEEN FOUND IN A SUBMERGED CAVE. IT IS A SPECIES DESCRIBED FROM THE GUINEA GULF. IT IS NOT SURE IT IS OF RECENT INTRODUCTION DUE THE CRIPTIC BEHAVIOUR IT HAS
LE GROTTE SOMMERSE DELLA PENISOLA DEL KARABURUN (ALBANIA): PRIMI DATI
No full textNegli anni 2003, 2004, e 2005, sono state organizzate 3 spedizioni finalizzate alla esplorazione subacquea degli ambienti costieri dell’Albania Meridionale. Durante la prima spedizione, all’estremità della penisola del Karaburun, sono state rinvenute ed esplorate 4 cavità sommerse il cui rilievo speditivo e la descrizione sommaria dei popolamenti rinvenuti sono stati qui riportati per la prima volta. Nel corso della seconda e della terza spedizione si sono perfezionate le misurazioni e le descrizioni delle caratteristiche biologiche della parte sommersa della grande grotta di Haxhi Ali
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