scholarly journals New deep-water cnidarian sites in the southern Adriatic Sea

2013 ◽  
Vol 15 (2) ◽  
pp. 263 ◽  
Author(s):  
L. ANGELETTI ◽  
M. TAVIANI ◽  
S. CANESE ◽  
F. FOGLINI ◽  
F. MASTROTOTARO ◽  
...  
Keyword(s):  
Adriatic Sea ◽  
New Records ◽  
Cold Water ◽  
Depth Range ◽  
Lophelia Pertusa ◽  
Remotely Operated Vehicle ◽  
Southwestern Margin ◽  
Bottom Sampling ◽  
Santa Maria ◽  
Almost Continuous

Recent ROV (Remotely Operated Vehicle) exploration and bottom sampling in the southern Adriatic Sea (Apulian and Montenegrin margins) resulted in the discovery of cnidarian-rich deep-sea habitats in the depth range of ca. 400-700 m. In particular, ROV inspection of Montenegrin canyons reveals the existence of megabenthic communities dominated by a variety of cnidarians, including scleractinians (Madrepora oculata, Lophelia pertusa, Dendrophyllia cornigera), antipatharians (Leiopathes glaberrima) and gorgonians (Callogorgia verticillata) as major habitat forming taxa, often in association with sponges and, subordinately, serpulids. All such cnidarians are new records for the southeastern side of the Adriatic Sea. Our investigation indicates that an almost continuous belt of patchy cold water coral sites occurs along the entire southwestern margin (Apulian), basically connecting the Adriatic populations with those inhabiting the Ionian margin (Santa Maria di Leuca coral province).

Diversity of the sponge fauna associated with white coral banks from two Sardinian canyons (Mediterranean Sea)

2019 ◽  
Vol 99 (8) ◽  
pp. 1735-1751 ◽  
Author(s):  
M. Bertolino ◽  
S. Ricci ◽  
S. Canese ◽  
A. Cau ◽  
G. Bavestrello ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Cold Water ◽  
Three Dimensional ◽  
Western Mediterranean ◽  
Tyrrhenian Sea ◽  
Lophelia Pertusa ◽  
Wide Range ◽  
Santa Maria

AbstractThe three-dimensional coral scaffolds formed by the skeletons of the cold-water corals Madrepora oculata and Lophelia pertusa represent an important deep-sea hard substratum and create an optimal shelter for a rich associated fauna in which the contribution of Porifera has still not been fully considered. The taxonomic analysis of sponges collected from two Sardinian canyons (Nora and Coda Cavallo, 256–408 m) and associated with the dead coral matrix resulted in 28 species, including new records for the Mediterranean Sea, Italian fauna or Central Tyrrhenian Sea. In addition, for many species this is the first finding associated with the coral framework or the first documentation of the in situ morphology. The taxonomic comparison with sponge assemblages associated with coral frameworks from Santa Maria di Leuca, Strait of Sicily and Bari Canyon, gave the opportunity to evaluate the similarities among geographically separated banks. Overall, the percentage of exclusive species (recorded only in one site), is very high (81%) and only one species is shared by all four sites, suggesting a low connectivity among the sponge communities. The percentage of shared species is higher for the Maltese community, supporting the role of the Sicily Channel as a crossroads between the communities of the eastern and western Mediterranean basins. Here, 55% of the sponges associated to the coral framework are also reported in shallow-water coralligenous assemblages, indicating a high bathymetric connectivity as well as an ecological plasticity allowing these species to occupy a wide range of small, dark refuges.

scholarly journals Bathymetrical distribution and size structure of cold-water coral populations in the Cap de Creus and Lacaze-Duthiers canyons (northwestern Mediterranean)

2013 ◽  
Vol 10 (3) ◽  
pp. 2049-2060 ◽  
Author(s):  
A. Gori ◽  
C. Orejas ◽  
T. Madurell ◽  
L. Bramanti ◽  
M. Martins ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Cold Water ◽  
Size Structure ◽  
First Record ◽  
Lophelia Pertusa ◽  
Submarine Canyons ◽  
Remotely Operated Vehicle ◽  
Coral Colony ◽  
The Mediterranean ◽  
Water Coral

Abstract. Submarine canyons are known as one of the seafloor morphological features where living cold-water coral (CWC) communities develop in the Mediterranean Sea. We investigated the CWC community of the two westernmost submarine canyons of the Gulf of Lions canyon system: the Cap de Creus Canyon (CCC) and Lacaze-Duthiers Canyon (LDC). Coral associations have been studied through video material recorded by means of a manned submersible and a remotely operated vehicle. Video transects have been conducted and analyzed in order to obtain information on (1) coral bathymetric distribution and density patterns, (2) size structure of coral populations, and (3) coral colony position with respect to the substrate. Madrepora oculata was the most abundant CWC in both canyons, while Lophelia pertusa and Dendrophyllia cornigera mostly occurred as isolated colonies or in small patches. An important exception was detected in a vertical cliff in LDC where a large L. pertusa framework was documented. This is the first record of such an extended L. pertusa framework in the Mediterranean Sea. In both canyons coral populations were dominated by medium and large colonies, but the frequent presence of small-sized colonies also indicate active recruitment. The predominant coral orientation (90° and 135°) is probably driven by the current regime as well as by the sediment load transported by the current flows. In general, no clear differences were observed in the abundance and in the size structure of the CWC populations between CCC and LDC, despite large differences in particulate matter between canyons.

scholarly journals Bathymetrical distribution and size structure of cold-water coral populations in the Cap de Creus and Lacaze-Duthiers canyons (northwestern Mediterranean)

2012 ◽  
Vol 9 (12) ◽  
pp. 19053-19084 ◽  
Author(s):  
A. Gori ◽  
C. Orejas ◽  
T. Madurell ◽  
L. Bramanti ◽  
M. Martins ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Cold Water ◽  
Size Structure ◽  
First Record ◽  
Lophelia Pertusa ◽  
Submarine Canyons ◽  
Remotely Operated Vehicle ◽  
Coral Colony ◽  
The Mediterranean ◽  
Water Coral

Abstract. Submarine canyons are known as one of the seafloor morphological features where living cold-water coral (CWC) communities develop in the Mediterranean Sea. We investigated the CWC community of the two westernmost submarine canyons of the Gulf of Lions canyon system: the Cap de Creus Canyon (CCC) and Lacaze Duthiers Canyon (LDC). Coral associations have been studied through video material recorded by means of a manned submersible and a remotely operated vehicle. Video transects have been conducted and analyzed in order to obtain information on (1) coral bathymetric distribution and density patterns, (2) size structure of coral populations, and (3) coral colony orientation with respect to the substrate. Madrepora oculata was the most abundant CWC in both canyons, while Lophelia pertusa and Dendrophyllia cornigera mostly occurred as isolated colonies or in small patches. An important exception was detected in a vertical cliff in LDC where a large Lophelia pertusa framework was documented. This is the first record of such an extended L. pertusa framework in the Mediterranean Sea. In both canyons coral populations were dominated by medium and large colonies, but the frequent presence of small-sized colonies also indicate active recruitment. The predominant coral orientation with respect to the substrate (90° and 135°) is probably driven by the current regime as well as by the sediment load transported by the current flows. In general no clear differences were observed between the CWC populations from CCC and LDC, despite large differences in particulate matter between canyons.

scholarly journals Macro- and megafauna recorded in the submarine Bari Canyon (southern Adriatic, Mediterranean Sea) using different tools

2015 ◽  
Vol 16 (1) ◽  
pp. 180 ◽  
Author(s):  
G. D'ONGHIA ◽  
F. CAPEZZUTO ◽  
F. CARDONE ◽  
R. CARLUCCI ◽  
A. CARLUCCIO ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Endemic Species ◽  
Deep Sea ◽  
Adriatic Sea ◽  
New Records ◽  
Cold Water ◽  
Bathymetric Range ◽  
New Information ◽  
Coral Communities ◽  
Water Coral

Macro- and megafauna were recorded in the submarine Bari Canyon (southern Adriatic Sea, Mediterranean Sea) during an oceanographic cruise carried out in May-June 2012 and an experimental fishing survey conducted in November 2013. During the former, a total of 20 benthic samples were taken using a Van Veen grab at depths between 268 and 770 m and 4 deployments of a baited lander, for about 43 hours of video records, were carried out at depths between 443 and 788 m. During the latter, 8 longline fishing operations were conducted from 338 down to 612 m. Eighty-five living benthic and benthopelagic species were recorded: 29 Porifera, 1 Cnidaria, 2 Mollusca, 11 Annelida, 1 Arthropoda, 19 Bryozoa, 3 Echinodermata and 19 Chordata. A total of 51 species are new records for the Bari Canyon, 29 new records for the Adriatic Sea. Among the Porifera Cerbaris curvispiculifer is a new addition for the Italian Sponge Fauna. The first certain record of living specimens for the bryozoan Crisia tenella longinodata is reported. A total of 6 Mediterranean endemic species have been identified: 4 Porifera and 2 Annelida. The bathymetric range of some species has been extended. New information acquired for deep sea species confirms their importance in the structure of cold-water coral communities. This study has updated the knowledge on the biodiversity of the Adriatic Sea, as well as of the Bari Canyon in particular, one of the sites designated as “jewels of the Mediterranean” for which urgent conservation measures are needed.

Deep-water scleractinian corals (Cnidaria: Anthozoa) from 2010-2011 INDEMARES expeditions to the Galicia Bank (Spain, northeast Atlantic)

Zootaxa ◽  
2017 ◽  
Vol 4353 (2) ◽  
pp. 257
Author(s):  
ALVARO ALTUNA
Keyword(s):  
New Records ◽  
Scleractinian Corals ◽  
Depth Interval ◽  
Depth Range ◽  
Lophelia Pertusa ◽  
Species List ◽  
Desmophyllum Dianthus ◽  
Soft Bottoms ◽  
Interesting Species ◽  
Northeastern Atlantic

During surveys in the Galicia Bank (northeastern Atlantic) in the years 2010–2011 (INDEMARES project), 25 species of scleractinian corals corals were collected in a depth interval of 744–1764 m. Most interesting species are described and depicted. Additionally, species list and remarks are given for the 23 species dredged in the bank during the 1987 SEAMOUNT 1 expedition at 675–1125 m depth.From a literature review and new records from Galicia Bank given herein, 31 species of scleractinian corals are known from this seamount in a depth interval of 614–1764 m depth. Six are colonial and 25 solitary, with 17 occurring on hard bottoms and 14 on soft bottoms. Desmophyllum dianthus, Lophelia pertusa and Madrepora oculata are the most widely distributed species in both number of stations and depth range of specimens collected alive. Some species were recorded outside their previously known bathymetric ranges in the northeastern Atlantic. Javania pseudoalabastra is first documented for the Iberian Peninsula and Spanish faunas. Thrypticotrochus sp. is first collected from the Atlantic Ocean. 

New record of the deep water Epimeria morronei Winfield, Ortiz & Hendrickx (Amphipoda, Gammaridea, Epimeriidae) in the east Pacific

Crustaceana ◽  
2014 ◽  
Vol 87 (14) ◽  
pp. 1699-1703
Author(s):  
Michel E. Hendrickx ◽  
Ignacio Winfield ◽  
Manolo Ortiz
Keyword(s):  
Deep Water ◽  
Environmental Conditions ◽  
New Record ◽  
New Records ◽  
Eastern Pacific ◽  
Depth Range ◽  
East Pacific

New records for the deep-water amphipod Epimeria morronei Winfield, Ortiz & Hendrickx, 2012, are presented for the eastern Pacific. Also, new data related to its depth range and environmental conditions are given.

Predicting suitable habitat for the cold-water coral Lophelia pertusa (Scleractinia)

2008 ◽  
Vol 55 (8) ◽  
pp. 1048-1062 ◽  
Author(s):  
Andrew J. Davies ◽  
Max Wisshak ◽  
James C. Orr ◽  
J. Murray Roberts
Keyword(s):  
Cold Water ◽  
Suitable Habitat ◽  
Lophelia Pertusa ◽  
Water Coral

New records of the occurrence of biting midges (Diptera: Ceratopogonidae) species in rural area of Santa Maria, Rio Grande do Sul, in the South of Brazil

2022 ◽  
Author(s):  
Julia Somavilla Lignon ◽  
Emanuelle de Souza Farias ◽  
Felipe Arley Costa Pessoa ◽  
Eduarda Maria Trentin Santi ◽  
Lucas Alexandre Farias de Souza ◽  
...  
Keyword(s):  
Rural Area ◽  
New Records ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
The South ◽  
Biting Midges ◽  
South Of Brazil ◽  
Santa Maria

scholarly journals <sup>210</sup>Pb-<sup>226</sup>Ra chronology reveals rapid growth rate of <i>Madrepora oculata</i> and <i>Lophelia pertusa</i> on world's largest cold-water coral reef

2012 ◽  
Vol 9 (3) ◽  
pp. 1253-1265 ◽  
Author(s):  
P. Sabatier ◽  
J.-L. Reyss ◽  
J. M. Hall-Spencer ◽  
C. Colin ◽  
N. Frank ◽  
...  
Keyword(s):  
Growth Rate ◽  
Coral Reef ◽  
Metal Oxides ◽  
Growth Rates ◽  
Cold Water ◽  
Age And Growth ◽  
Lophelia Pertusa ◽  
Fe Oxide ◽  
Oxide Contamination ◽  
Water Coral

Abstract. Here we show the use of the 210Pb-226Ra excess method to determine the growth rate of two corals from the world's largest known cold-water coral reef, Røst Reef, north of the Arctic circle off Norway. Colonies of each of the two species that build the reef, Lophelia pertusa and Madrepora oculata, were collected alive at 350 m depth using a submersible. Pb and Ra isotopes were measured along the major growth axis of both specimens using low level alpha and gamma spectrometry and trace element compositions were studied. 210Pb and 226Ra differ in the way they are incorporated into coral skeletons. Hence, to assess growth rates, we considered the exponential decrease of initially incorporated 210Pb, as well as the increase in 210Pb from the decay of 226Ra and contamination with 210Pb associated with Mn-Fe coatings that we were unable to remove completely from the oldest parts of the skeletons. 226Ra activity was similar in both coral species, so, assuming constant uptake of 210Pb through time, we used the 210Pb-226Ra chronology to calculate growth rates. The 45.5 cm long branch of M. oculata was 31 yr with an average linear growth rate of 14.4 ± 1.1 mm yr−1 (2.6 polyps per year). Despite cleaning, a correction for Mn-Fe oxide contamination was required for the oldest part of the colony; this correction corroborated our radiocarbon date of 40 yr and a mean growth rate of 2 polyps yr−1. This rate is similar to the one obtained in aquarium experiments under optimal growth conditions. For the 80 cm-long L. pertusa colony, metal-oxide contamination remained in both the middle and basal part of the coral skeleton despite cleaning, inhibiting similar age and growth rate estimates. The youngest part of the colony was free of metal oxides and this 15 cm section had an estimated a growth rate of 8 mm yr−1, with high uncertainty (~1 polyp every two to three years). We are less certain of this 210Pb growth rate estimate which is within the lowermost ranges of previous growth rate estimates. We show that 210Pb-226Ra dating can be successfully applied to determine the age and growth rate of framework-forming cold-water corals if Mn-Fe oxide deposits can be removed. Where metal oxides can be removed, large M. oculata and L. pertusa skeletons provide archives for studies of intermediate water masses with an up to annual time resolution and spanning over many decades.

scholarly journals Opportunistic feeding on various organic food sources by the cold-water coral <i>Lophelia pertusa</i>

2014 ◽  
Vol 11 (1) ◽  
pp. 123-133 ◽  
Author(s):  
C. E. Mueller ◽  
A. I. Larsson ◽  
B. Veuger ◽  
J. J. Middelburg ◽  
D. van Oevelen
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
De Novo ◽  
Cold Water ◽  
Feeding Strategy ◽  
Food Sources ◽  
Coral Tissue ◽  
Lophelia Pertusa ◽  
Opportunistic Feeding ◽  
Water Coral

Abstract. The ability of the cold-water coral Lophelia pertusa to exploit different food sources was investigated under standardized conditions in a flume. The tested food sources, dissolved organic matter (DOM, added as dissolved free amino acids), bacteria, algae, and zooplankton (Artemia) were deliberately enriched in 13C and 15N. The incorporation of 13C and 15N was traced into bulk tissue, fatty acids, hydrolysable amino acids, and the skeleton (13C only) of L. pertusa. Incorporation rates of carbon (ranging from 0.8–2.4 μg C g−1 DW d–1) and nitrogen (0.2–0.8 μg N g−1 DW d–1) into coral tissue did not differ significantly among food sources indicating an opportunistic feeding strategy. Although total food assimilation was comparable among sources, subsequent food processing was dependent on the type of food source ingested and recovery of assimilated C in tissue compounds ranged from 17% (algae) to 35% (Artemia). De novo synthesis of individual fatty acids by L. pertusa occurred in all treatments as indicated by the 13C enrichment of individual phospholipid-derived fatty acids (PLFAs) in the coral that were absent in the added food sources. This indicates that the coral might be less dependent on its diet as a source of specific fatty acids than expected, with direct consequences for the interpretation of in situ observations on coral nutrition based on lipid profiles.

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