scholarly journals On the Finding of the Rare Crab Paragalene longicrura (Nardo, 1868) (Crustacea, Decapoda, Brachyura, Progeryonidae) from Thermaikos Gulf, Northwest Aegean Sea, Greece

Fishes ◽  
2018 ◽  
Vol 3 (3) ◽  
pp. 30 ◽  
Author(s):  
Thodoros Kampouris ◽  
Debora Milenkova ◽  
Ioannis Batjakas
Keyword(s):  
Mediterranean Basin ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Eastern Mediterranean Basin ◽  
The Mediterranean ◽  
First Time

The finding of a rare crab, Paragalene longicrura, is herein recorded from Thermaikos Gulf. This constitutes the northmost record of the species in Greek waters. The species is only known from sporadic records in the eastern Mediterranean basin. Ecological remarks on the habitat of P. longicrura and other decapod species are described for the first time for the Mediterranean.

scholarly journals ​Impact of changes in rivers inputs during the last decades on the biogeochemistry of the eastern Mediterranean basin

2020 ◽  
Author(s):  
Rémi Pagès ◽  
Melika Baklouti ◽  
Nicloas Barrier ◽  
Camille Richon ◽  
Jean-Claude Dutay ◽  
...  
Keyword(s):  
Surface Layer ◽  
Mediterranean Sea ◽  
Mediterranean Basin ◽  
Large Scale ◽  
Eastern Mediterranean ◽  
Phosphate Availability ◽  
Eastern Mediterranean Basin ◽  
The Mediterranean ◽  
Long Term Impact ◽  
First Time

<p>The Mediterranean Sea (MS) is a semi-enclosed sea characterized by a zonal west-east gradient of oligotrophy, where microbial growth is controlled by phosphate availability in most situations. External inputs of nutrients including Gibraltar inputs, river inputs and atmospheric deposition are therefore of major importance for the biogeochemistry of the MS. The latter has long been considered to be driven mainly by nutrient exchanges at Gibraltar. However, recent studies indicate that river inputs significantly affect nutrients concentrations in the Mediterranean Sea, although their resulting impact on its biogeochemistry remains poorly understood. In this study, our aim was to help fill this knowledge gap by addressing the large-scale and long-term impact of variations in river inputs on the biogeochemistry of the Mediterranean Sea over the last decades, using a coupled physical- biogeochemical 3D model (NEMO-MED12/Eco3M-Med). As a first result, it has been shown by the model that the strong diminution (60%) of phosphate (PO4) in river inputs into the Mediterranean Sea since the end of the 1980s induced a significant lowering of PO4 availability in the sub-surface layer of the Eastern Mediterranean Basin (EMB). One of the main consequences of PO4 diminution is the rise, never previously documented, of dissolved organic carbon (DOC) concentrations in the surface layer (by 20% on average over the EMB). Another main result concerns the gradual deepening of the top of the phosphacline during the period studied, thus generating a shift between the top of the nitracline and the top of the phosphacline in the EMB. This shift has already been observed in situ and documented in literature, but we propose here a new explanation for its occurrence in the EMB. The last main result is the evidence of the decline in abundance and the reduction of size of copepods calculated by the model over the years 1985–2010, that could partially explain the reduction in size of anchovy and sardine recently recorded in the MS. In this study, it is shown for the first time that the variations in river inputs that occurred in the last decades may have significantly altered the biogeochemical cycles of two key elements (P and C), in particular in the EMB.</p>

scholarly journals Tritonia nilsodhneri Marcus Ev., 1983 (Gastropoda, Heterobranchia, Tritoniidae)

2017 ◽  
Vol 58 (2) ◽  
pp. 261-269 ◽  
Author(s):  
Giulia Furfaro ◽  
Egidio Trainito ◽  
Franco De Lorenzi ◽  
Marco Fantin ◽  
Mauro Doneddu
Keyword(s):  
Host Species ◽  
Mediterranean Basin ◽  
Eastern Mediterranean ◽  
Feeding Habits ◽  
New Host ◽  
Host Preferences ◽  
Mediterranean Populations ◽  
Eastern Atlantic Ocean ◽  
Eastern Mediterranean Basin ◽  
The Mediterranean

The nudibranch Tritonia nilsodhneri, usually feeding on a variety of gorgoniacean species, is known from different localities of the eastern Atlantic Ocean and the Mediterranean Sea. Knowledge of the host preferences of the Mediterranean populations is still scarce. Few records of this nudibranch have been reported from the eastern Mediterranean basin. With this report, the occurrence of T. nilsodhneri within the Mediterranean basin is extended to the Adriatic Sea. Furthermore, the list of the host species associated to the Mediterranean populations for feeding habits is increased from two up to five. Mediterranean specimens of T. nilsodhneri were observed for the first time feeding and spawning on Leptogorgia sarmentosa, Eunicella cavolini and E. labiata. Finally, these last two Gorgoniidae species are also reported here as a new host species for T. nilsodhneri.

scholarly journals High Connectivity of the White Seabream (Diplodus sargus, L. 1758) in the Aegean Sea, Eastern Mediterranean Basin

Animals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 979 ◽  
Author(s):  
Athanasios Exadactylos ◽  
Dimitrios Vafidis ◽  
Costas Tsigenopoulos ◽  
Georgios Gkafas
Keyword(s):  
Population Dynamics ◽  
Mediterranean Basin ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Diplodus Sargus ◽  
Genetic Diversity And Structure ◽  
Species Population ◽  
Marine Realm ◽  
Eastern Mediterranean Basin ◽  
Passive Drift

Population dynamics in the marine realm can shape species’ spatial structure and genetic variability between given geographical areas. Connectivity is an important factor of species’ population structure. In this study, we examined the genetic diversity and structure of white seabream (Diplodus sargus, L. 1758) in the eastern Mediterranean basin, using a panel of four microsatellite markers. Recorded low FST values within the study area indicate little evidence of genetic differentiation among populations. Results suggest high gene flow which may imply near-panmixia between populations, indicating the possibility of a probable movement of adult migrants, or strong passive drift at sea in early life stages of the species. To this extent, bibliographically speaking, different species within the Sparidae family favor altered population dynamics patterns with respect to local populations and genetic divergence, in the context of the molecular marker used.

scholarly journals Evidence of a prolonged drought ca. 4200 yr BP correlated with prehistoric settlement abandonment from the Gueldaman GLD1 Cave, Northern Algeria

2016 ◽  
Vol 12 (1) ◽  
pp. 1-14 ◽  
Author(s):  
J. Ruan ◽  
F. Kherbouche ◽  
D. Genty ◽  
D. Blamart ◽  
H. Cheng ◽  
...  
Keyword(s):  
Mediterranean Basin ◽  
Eastern Mediterranean ◽  
Western Mediterranean ◽  
Faunal Remains ◽  
Carbon And Oxygen Isotopes ◽  
Northern Algeria ◽  
Western Mediterranean Basin ◽  
Prolonged Drought ◽  
Eastern Mediterranean Basin ◽  
The Mediterranean

Abstract. Middle Holocene cultures have been widely studied around the Eastern-Mediterranean basin in the last 30 years and past cultural activities have been commonly linked with regional climate changes. However, in many cases such linkage is equivocal, in part due to existing climatic evidence that has been derived from areas outside the distribution of ancient settlements, leading to uncertainty from complex spatial heterogeneity in both climate and demography. A few high-resolution well-dated paleoclimate records were recently established using speleothems in the Central and Eastern-Mediterranean basin, however, the scarcity of such records in the western part of the Mediterranean prevents us from correlating past climate evolutions across the basin and deciphering climate–culture relation at fine timescales. Here we report the first decadal-resolved Mid-Holocene climate proxy records from the Western-Mediterranean basin based on the stable carbon and oxygen isotopes analyses of two U/Th dated stalagmites from the Gueldaman GLD1 Cave in Northern Algeria. Comparison of our records with those from Italy and Israel reveals synchronous (multi) centennial dry phases centered at ca. 5600, ca. 5200 and ca. 4200 yr BP across the Mediterranean basin. New calibrated radiocarbon dating constrains reasonably well the age of rich anthropogenic deposits (e.g., faunal remains, pottery, charcoal) excavated inside the cave, which allows the comparison between in situ evidence of human occupation and of climate change. This approach shows that the timing of a prolonged drought at ca. 4400–3800 yr BP blankets the onset of cave abandonment shortly after ca. 4403 cal yr BP, supporting the hypothesis that a climate anomaly may have played a role in this cultural disruption.

scholarly journals New records of amphipod crustaceans along the Israeli Mediterranean coast, including a rare Mediterranean endemic species, Maera schieckei Karaman & Ruffo, 1971

2020 ◽  
Vol 8 ◽  
Author(s):  
Sabrina Lo Brutto ◽  
Davide Iaciofano
Keyword(s):  
Mediterranean Sea ◽  
Mediterranean Basin ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Western Mediterranean ◽  
Mediterranean Coast ◽  
Tyrrhenian Sea ◽  
Western Mediterranean Basin ◽  
The Mediterranean ◽  
Distribution And Ecology

A survey has been carried out at four Israeli rocky sites to evaluate the diversity of the amphipod fauna on various hard substrates, still scarcely monitored, as potential pabulum for amphipod crustacean species. A survey of shallow rocky reefs along the Mediterranean coast of Israel recovered 28 species and integrated the Amphipoda checklist for the country ofIsrael with 12 newly-recorded species. Such renewed national list includes Maera schieckei Karaman & Ruffo, 1971, a rare species endemic to the Mediterranean Sea, recorded here for the first time from the southern Levant Basin. The species, described from specimens collected in the Tyrrhenian Sea in 1970, has been only recorded eight times within the whole Mediterranean Sea. A revision of the bibliography on the distribution and ecology of M. schieckei showed that, although mentioned only for the western Mediterranean basin by some authors, it is listed in the checklist of amphipods of the Aegean Sea and neighbouring seas and has been found in the eastern Mediterranean basin since 1978. Maera schieckei was rarely found in the Mediterranean, one of the most studied marine biogeographic region as concerns the amphipod fauna; and the species seems to prefer bays or gulf areas. The role of updating and monitoring faunal composition should be re-evaluated.

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 Additional records of the alien gastropod, Ergalatax junionae Houart, 2008 (Gastropoda: Muricidae), from the eastern Mediterranean

2009 ◽  
Vol 10 (1) ◽  
pp. 137
Author(s):  
S.U. KARHAN ◽  
M.B. YOKES
Keyword(s):  
Mediterranean Basin ◽  
Eastern Mediterranean ◽  
Local Population ◽  
Aegean Sea ◽  
Shallow Waters ◽  
Population Densities ◽  
Levantine Sea ◽  
Eastern Turkey ◽  
First Occurrence ◽  
Eastern Mediterranean Basin

The alien muricid gastropod Ergalatax junionae Houart, 2008 has been known to inhabit the shallow waters of the eastern Mediterranean. The chronology of its recorded observations, beginning in eastern Turkey and proceeding to the south and west, suggests that it was first introduced to eastern Turkey via shipping, and was then spread in the Levantine Sea. The recent record from Greece indicates that its range of distribution is still expanding. Here we report local population densities and additional records of E. junionae from the eastern Mediterranean basin, including its first occurrence from the Turkish coastof the Aegean Sea.

scholarly journals Addendum: Exadactylos, A., et al. High Connectivity of the White Seabream (Diplodus sargus, L. 1758) in the Aegean Sea, Eastern Mediterranean Basin. Animals 2019, 11, 979

Animals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1152
Author(s):  
Athanasios Exadactylos ◽  
Dimitrios Vafidis ◽  
Costas S. Tsigenopoulos ◽  
Georgios A. Gkafas
Keyword(s):  
Mediterranean Basin ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Diplodus Sargus ◽  
Eastern Mediterranean Basin ◽  
High Connectivity

The authors wish to make the following corrections to this paper [...]

scholarly journals On the occurrence of Bursatella leachii de Blainville, 1817 in Izmir Bay, Turkey

2007 ◽  
Vol 8 (2) ◽  
pp. 87 ◽  
Author(s):  
M. KAZAK ◽  
L. CAVAS
Keyword(s):  
Alien Species ◽  
Mediterranean Basin ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Izmir Bay ◽  
Eastern Mediterranean Basin ◽  
Bursatella Leachii

One of the well- established alien species in the eastern Mediterranean basin is Bursatella leachii, also known as a lessepsian immigrant. The present paper provides a contribution to Bursatella leachii’sdistribution in the Bay of Izmir, Turkish Aegean Sea.

Rare sponge (Porifera: Demospongiae) species from the Mediterranean Sea

2004 ◽  
Vol 84 (3) ◽  
pp. 593-598 ◽  
Author(s):  
Eleni Voultsiadou ◽  
Dimitris Vafidis
Keyword(s):  
Mediterranean Sea ◽  
New Records ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Sponge Species ◽  
The Mediterranean ◽  
First Time ◽  
Bathymetrical Distribution

Fourteen rare or poorly known sponge species have been found in the Aegean Sea. The species Pachastrissa pathologica, Calthropella stelligera, Weberella verrucosa, Aaptos papillatus, Timea geministellata, Spiroxya heteroclita, Clathria translata, Hymedesmia simillima, Mycale serrulata, Myrmekioderma spelaea, Callyspongia septimaniensis and Ircinia pipetta are new records for the eastern Mediterranean while the species Geodia barretti and Petrosia vansoesti are reported for the first time from the Mediterranean Sea. Information on their morphology, geographical and bathymetrical distribution is given and discussed.

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