scholarly journals Discovery of deep-water coral frameworks in the northern Red Sea waters of Saudi Arabia

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Mohammad A. Qurban ◽  
Periyadan K. Krishnakumar ◽  
Thadickal V. Joydas ◽  
Karuppasamy P. Manikandan ◽  
T. T. M. Ashraf ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Genetic Variation ◽  
Red Sea ◽  
Deep Water ◽  
Scleractinian Coral ◽  
Sea Bottom ◽  
Large Living ◽  
The Individual ◽  
Northern Red Sea ◽  
Water Coral

Abstract This paper reports a deep-water coral framework (a single colonial bush or a larger bioconstruction of coral covering the sea bottom), formed entirely by the scleractinian coral Eguchipsammia fistula (Alcock, 1902) (Dendrophylliidae), in the northern Red Sea waters of Saudi Arabia at a depth of about 640 m. The framework consists of mostly live corals with a total area of about 10 m2 and the length of the individual coral branches range from 12 to 30 cm. Although E. fistula is ubiquitous, this discovery is the second record of a framework formed by this species and the first discovery of a large living reef in the Red Sea. The results of the genetic study indicate the potential existence of a genetic variation of E. fistula in the Red Sea. This discovery implies that the Red Sea has favorable habitats for framework-forming DWC species and highlights the need for conducting more systematic surveys for understanding their distribution, abundance, and ecology.

In-situ observation of deep water corals in the northern Red Sea waters of Saudi Arabia

2014 ◽  
Vol 89 ◽  
pp. 35-43 ◽  
Author(s):  
Mohammad A. Qurban ◽  
P.K. Krishnakumar ◽  
T.V. Joydas ◽  
K.P. Manikandan ◽  
T.T.M. Ashraf ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Red Sea ◽  
Deep Water ◽  
In Situ Observation ◽  
Northern Red Sea

scholarly journals A new species of squat lobster of the genus Munida (Galatheoidea, Munididae) from the Red Sea

Crustaceana ◽  
2017 ◽  
Vol 90 (7-10) ◽  
pp. 1005-1014
Author(s):  
E. Macpherson ◽  
L. Beuck ◽  
C. Roder ◽  
C. R. Voolstra
Keyword(s):  
Saudi Arabia ◽  
New Species ◽  
Red Sea ◽  
Deep Water ◽  
Scleractinian Coral ◽  
Dorsal Side ◽  
Eastern Pacific ◽  
Squat Lobster ◽  
Pacific Species ◽  
A New Species

During a deep-water expedition to the Red Sea in 2013, an unusual specimen of squat lobster belonging to the genusMunidawas collected off Thuwal, Saudi Arabia, at a depth of 320 m. This specimen is unique in having the pterygostomial flap visible from the dorsal side, the feature linking it to two eastern Pacific species,M. bapensisHendrickx, 2000 andM. macrobrachiaHendrickx, 2003. The new species (M. tuerkayi) is readily distinguished from the eastern Pacific species by having the gastric region with numerous instead of less numerous spines, by having sternite 7 with three distinct carinae on each side, and by having the antennular basal article with two distal spines subequal instead of different in size.Munida tuerkayiwas found associated with live colonies of the scleractinian coralEguchipsammia fistula(Alcock, 1902).

scholarly journals Contrasting seasonal responses in dinitrogen fixation between shallow and deep-water colonies of the model coral Stylophora pistillata in the northern Red Sea

PLoS ONE ◽  
2018 ◽  
Vol 13 (6) ◽  
pp. e0199022 ◽  
Author(s):  
Vanessa N. Bednarz ◽  
Malik S. Naumann ◽  
Ulisse Cardini ◽  
Nanne van Hoytema ◽  
Laura Rix ◽  
...  
Keyword(s):  
Red Sea ◽  
Deep Water ◽  
Dinitrogen Fixation ◽  
Stylophora Pistillata ◽  
Northern Red Sea ◽  
Seasonal Responses

scholarly journals Contribution of Gulf of Aqaba Water (GAW) to Red Sea waters

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Mohideen Wafar
Keyword(s):  
Red Sea ◽  
Deep Water ◽  
Significant Contribution ◽  
Direct Evidence ◽  
Gulf Of Aqaba ◽  
Depth Range ◽  
Deep Water Formation ◽  
Water Formation ◽  
Northern Red Sea ◽  
Southward Flow

Data obtained on hydrography and currents in meridional sections in Gulf of Aqaba and Red Sea in November 2013 and March 2015 were used to determine the extent of contribution of Gulf of Aqaba Water (GAW) to formation of Red Sea waters. The southward flow across the Strait of Tiran was ~0.02 Sv in both periods which is direct evidence of significant contribution of GAW to Red Sea waters in autumn-winter. A multiple tracer analysis using temperature, salinity, and dissolved oxygen showed that the GAW, on entry into Red Sea, bifurcates into two branches. The upper branch exiting the Strait in the depth range 150-220 m has densities between 28.3 and 28.5, continues to flow at the same depths, and feeds the Red Sea Overflow Water (RSOW). The lower branch that exits between 220 and 250 m above the sill cascades down its southern face, mixes with northward recirculating branch of Red Sea Deep Water (RSDW) and sinks to the bottom and forms part of southward-flowing RSDW. Contribution of GAW to northern Red Sea waters below 100 m depth was 36 ± 0.4% in November 2013 and 42.1 ± 5.4% in March 2015. GAW is traceable down to 17-19 °N in RSDW and RSOW. Volume contribution of GAW to RSOW was 9.6 * 1012 m3, about 50% higher than that for RSDW (6 * 1012 m3). Analyses of the data from R.V. Maurice Ewing cruise in 2001 gave similar results and lend support for these deductions. Indirect estimates suggest that contribution of GSW to deep water formation could exceed that of GAW.

Food of Iago omanensis, a deep water shark from the northern Red Sea

1994 ◽  
Vol 45 (1) ◽  
pp. 37-45 ◽  
Author(s):  
G. N. H. Waller ◽  
A. Baranes
Keyword(s):  
Red Sea ◽  
Deep Water ◽  
Northern Red Sea
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