scholarly journals Evidence of a second nursery area of the sandbar shar, Carcharhinus plumbeus (Nardo, 1827) in the Eastern Mediterranean Sea

2020 ◽  
Author(s):  
NURI BASUSTA ◽  
ASIYE BAŞUSTA ◽  
CANER E. OZYURT
Keyword(s):  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
Nursery Area ◽  
Narrow Slit ◽  
Mediterranean Population ◽  
Sandbar Shark ◽  
Carcharhinus Plumbeus ◽  
Western Turkey ◽  
Eastern Mediterranean Sea ◽  
The Mediterranean

The sandbar shark (Carcharhinus plumbeus) is a large coastal species with a cosmopolitan distribution that has been listed as Endangered in the Mediterranean Sea and as Vulnerable for the rest of the world on the IUCN Red List of threatened species. The Gökova's Boncuk Cove in south-western Turkey and the Gulf of Gabès in southern Tunisia are the only known nursery area for the Mediterranean population. On 24 – 27 July 2017, eight specimens, four males and four females, of sandbar sharks were accidentally caught at a depth of 7 to 9 m by a pelagic bluefish longline off the coast of Yumurtalik Bight in the Gulf of Iskenderun. The total length and weight of males and females were 54.5 – 61.0 cm, 930 – 1,484 g and 49.6 – 62.4 cm, 918 – 1,568 g, respectively. They all had unhealed umbilical scars that were still open as a narrow slit, measuring 4.35 and 5.39 mm in lengths. This study thus provides the records of the neonate sandbar sharks from the Yumurtalik Bight. Consequently, this occurrence represents that this area of the north-eastern Mediterranean Sea can be the second breeding and nursery grounds for this species after the Boncuk Cove in Gökova Bay in Turkey.

scholarly journals New Fisheries-related data from the Mediterranean Sea (October 2015)

2015 ◽  
Vol 16 (3) ◽  
pp. 703 ◽  
Author(s):  
K. TSAGARAKIS ◽  
A. BAŞUSTA ◽  
N. BAŞUSTA ◽  
F. BIANDOLINO ◽  
D. BOSTANCI ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
Length Distribution ◽  
Central Mediterranean ◽  
Eastern Mediterranean Sea ◽  
Related Data ◽  
Solea Solea ◽  
Commercially Important ◽  
The Mediterranean ◽  
Polyprion Americanus

In this third Collective Article, with fisheries-related data from the Mediterranean Sea, we present the historical length distribution of Lophius budegassa in the catch of commercial trawlers in the Greek seas; length-weight and length-length relationships of five flatfish species (Lepidorhombus boscii, L. whiffiagonis, Platichthys flesus, Pegusa lascaris and Solea solea) from different coastal areas of Turkey (Black Sea and Eastern Mediterranean Sea); growth of settled Polyprion americanus and length-weight relationships of this species and of Deltentosteus quadrimaculatus, Capros aper and three commercially important groupers in the Eastern Mediterranean Sea; the age, growth and mortality of Zosterisessor ophiocephalus in the Eastern Adriatic Sea; the length-weight relationship and condition factor of Atherina boyeri in a Central Mediterranean semi-isolated lagoon, and also the length-weight and length-length relationships of three Alburnus species from different inland waters in Turkey.

scholarly journals High resolution nested model for the Cyprus, NE Levantine Basin, eastern Mediterranean Sea: implementation and climatological runs

2003 ◽  
Vol 21 (1) ◽  
pp. 221-236 ◽  
Author(s):  
G. Zodiatis ◽  
R. Lardner ◽  
A. Lascaratos ◽  
G. Georgiou ◽  
G. Korres ◽  
...  
Keyword(s):  
High Resolution ◽  
Mediterranean Sea ◽  
General Circulation ◽  
Eastern Mediterranean ◽  
Pilot Project ◽  
Ocean Model ◽  
Eastern Mediterranean Sea ◽  
Coastal Shelf ◽  
Forecasting System ◽  
The Mediterranean

Abstract. A high resolution nested flow model for the coastal, shelf and open sea areas of the Cyprus Basin, NE Levantine, eastern Mediterranean Sea is implemented to fulfil the objectives of the Mediterranean Forecasting System Pilot Project, funded by the EU. The Cyprus coastal ocean model is nested entirely within a coarse regional grid model of the eastern Mediterranean Sea, using the MODB climatology for initialisation and the ECMWF perpetual year surface forcing. The nested simulations of the Cyprus model were able to reproduce, with greater detail, flow features similar to those of the coarse grid regional model. The project results show the feasibility of the approach for the development of an operational forecasting system in the Mediterranean Sea, particularly in the Cyprus coastal/shelf sea area. Key words. Oceanography: general (descriptive and regional oceanography; numerical modelling) Oceanography: physical (general circulation)

scholarly journals Spring distribution of shelled pteropods across the Mediterranean Sea

2020 ◽  
Author(s):  
Roberta Johnson ◽  
Clara Manno ◽  
Patrizia Ziveri
Keyword(s):  
Climate Change ◽  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
Hot Spot ◽  
Environmental Parameters ◽  
Saturation State ◽  
Eastern Mediterranean Sea ◽  
The Mediterranean ◽  
First Time ◽  
Natural Laboratory

Abstract. Shelled pteropods represent an excellent sentinel for indicating exposure to ocean acidification (OA). Here, for the first time, we characterise spring pteropod distribution throughout the Mediterranean Sea, a region that has been identified as a climate change hot-spot. The presence of a west–east natural biogeochemical gradient makes this region a natural laboratory to investigate how the variability in environmental parameters may affect pteropod distribution. Results show that pteropod abundance is significantly higher in the eastern Mediterranean Sea where there is a higher aragonite saturation state (Ωar), showing that distribution is positively correlated with Ωar. We also observed a resilience of pteropods to higher temperatures and low nutrient conditions, including phosphorous limitation. The higher abundance of pteropods in ultra-oligotrophic conditions (eastern Mediterranean Sea) suggests that this organism can play an important role as the prime calcifying zooplankton within specific oligotrophic regions.

scholarly journals The Uniqueness of Planktonic Ecosystems in the Mediterranean Sea: The Response to Orbital- and Suborbital-Climatic Forcing over the Last 130,000 Years

2016 ◽  
Vol 8 (1) ◽  
pp. 567-578 ◽  
Author(s):  
Alessandro Incarbona ◽  
Enrico Di Stefano ◽  
Rodolfo Sprovieri ◽  
Serena Ferraro
Keyword(s):  
Mediterranean Sea ◽  
Late Quaternary ◽  
Eastern Mediterranean ◽  
Planktonic Foraminifera ◽  
Central Mediterranean ◽  
Eastern Mediterranean Sea ◽  
The North ◽  
Northern Areas ◽  
The Mediterranean ◽  
Water Ecosystems

AbstractThe Mediterranean Sea is an ideal location to test the response of organisms to hydrological transformations driven by climate change. Here we review studies carried out on planktonic foraminifera and coccolithophores during the late Quaternary and attempt the comparison of data scattered in time and space. We highlight the prompt response of surface water ecosystems to both orbital- and suborbital-climatic variations.A markedly different spatial response was observed in calcareous plankton assemblages, possibly due to the influence of the North Atlantic climatic system in the western, central and northern areas and of the monsoon system in the easternmost and southern sites. Orbital-induced climatic dynamics led to productive surface waters in the northern, western and central Mediterranean Sea during the last glacial and to distinct deep chlorophyll maximum layers in the eastern Mediterranean Sea coinciding with bottom anoxia episodes. High-frequency planktonic modifications are well documented in the Sicily Channel and Alboran Sea and highlight the occurrence of different steps within a single stadial (cold phase)/interstadial (warm phase) oscillation.The review of planktonic organisms in the marine sedimentary archive casts light on the uniqueness of the Mediterranean Sea, especially in terms of climatic/oceanographic/biological interaction and influence of different climatic systems on distinct areas. Further research is needed in the eastern Mediterranean Sea where results are obscured by low-resolution sedimentary records and by a strong focus on sapropel deposition dynamics.

First report of Laurencia chondrioides (Ceramiales, Rhodophyta) and its potential to be an invasive in the eastern Mediterranean Sea

2014 ◽  
Vol 57 (6) ◽  
Author(s):  
Razy Hoffman ◽  
Marcelo Sternberg ◽  
Donatella Serio
Keyword(s):  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
Marine Species ◽  
Mediterranean Coast ◽  
Red Seaweed ◽  
Eastern Mediterranean Sea ◽  
First Report ◽  
First Occurrence ◽  
The Mediterranean ◽  
Invasive Marine Species

AbstractThe Mediterranean coast of Israel is well known as a hotspot of invasive marine species, mostly from the Indian and Pacific oceans. Here, we report the first occurrence of the red seaweed

scholarly journals Serpulid communities from two marine caves in the Aegean Sea, eastern Mediterranean

2017 ◽  
Vol 97 (5) ◽  
pp. 1059-1068 ◽  
Author(s):  
Rossana Sanfilippo ◽  
Antonietta Rosso ◽  
Adriano Guido ◽  
Vasilis Gerovasileiou
Keyword(s):  
Species Diversity ◽  
Mediterranean Sea ◽  
Deep Sea ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Clear Trend ◽  
Eastern Mediterranean Sea ◽  
Marine Caves ◽  
The Mediterranean ◽  
First Time

This paper is a first detailed contribution to the knowledge of serpulid diversity from marine caves of the eastern Mediterranean Sea. A total of 27 taxa were recorded in two submerged caves of Lesvos Island, in the Aegean Sea. A clear trend of variability was observed with serpulid abundance, specifically that of sciaphilic and deep-sea species, increasing inwards while the number of taxa and species diversity did not change significantly across the two caves. In the innermost sectors of the studied caves two types of bioconstructions were observed: (a) ‘coiled doughnuts’ ofProtula, recorded for the first time in Mediterranean caves; and (b) ‘biostalactites’ mainly consisting of skeletal metazoans recorded for the first time from the eastern Mediterranean. The results of the present study revealed new faunal elements and type of bioconstructions for the Mediterranean marine caves, showing that several aspects of their communities are still poorly known and deserve to be further investigated.

scholarly journals The bastard grunt Pomadasys incisus (Bowdich, 1825) (Teleostei: Haemulidae) in Cyprus (eastern Mediterranean Sea) - a late arrival or just a neglected species?

2020 ◽  
Vol 8 ◽  
Author(s):  
Nikos Doumpas ◽  
Valentina Tanduo ◽  
Fabio Crocetta ◽  
Ioannis Giovos ◽  
Joachim Langeneck ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
Field Studies ◽  
First Record ◽  
Extrinsic Factors ◽  
Eastern Mediterranean Sea ◽  
Late Arrival ◽  
Subtropical Fish ◽  
The Mediterranean ◽  
Xix Century

Pomadasys incisus is a thermophilous coastal subtropical fish species belonging to the family Haemulidae. Originally described from Gambia, this species is widely distributed in the Eastern Atlantic from Galicia to South Africa. It has also been recorded in the Mediterranean Sea since 1840, presumably expanding its distribution in the next decades, although the species could have been already present in the basin, but simply overlooked until the mid XIX century. In this study, we first record P. incisus from Cyprus (eastern Mediterranean Sea), based on two opportunistic observations obtained through a citizen-science project and review the distribution of this species in the Mediterranean Sea. The present sighting raises the question on whether this species is a late arrival in the country or its presence has just been neglected until now. Based on present data, the most likely hypothesis is the latter one, with P. incisus occurring in low densities and being overlooked due to the absence of field studies. Whatever is true, some intrinsic or extrinsic factors may have played a role in limiting its spread or wide establishment in the above-mentioned country.

scholarly journals Hydrography in the Mediterranean Sea during a cruise with RV <i>POSEIDON</i> in April 2014

2015 ◽  
Vol 8 (1) ◽  
pp. 427-446
Author(s):  
D. Hainbucher ◽  
V. Cardin ◽  
G. Siena ◽  
U. Hübner ◽  
M. Moritz ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Adriatic Sea ◽  
Eastern Mediterranean ◽  
Intermediate Water ◽  
Strait Of Gibraltar ◽  
Eastern Mediterranean Sea ◽  
German Research ◽  
The Mediterranean ◽  
Long Term Variations

Abstract. We report on data from an oceanographic cruise in the Mediterranean Sea on the German research vessel POSEIDON in April 2014. Data were taken on a west–east section starting at the Strait of Gibraltar and ending south-east of Crete as well on sections in the Ionian and Adriatic Sea. The objectives of the cruise were twofold; long-term variations of the Levantine Intermediate Water (LIW) and the deep water masses of the Eastern Mediterranean Sea were investigated. The measurements include salinity, temperature, oxygen and currents and were conducted with a CTD/rosette system, an underway CTD and an ADCP. The sections are on tracks which have been sampled during several other cruises, thus supporting the opportunity to investigate the long term temporal development of the different variables. The use of an underway CTD made it possible to conduct measurements of temperature and salinity with a high resolution of 6 nm and a vertical resolution of 1 dbar for the upper 800 m of the water column.

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