scholarly journals Activity patterns, home-range size, and habitat utilization of Sarpa salpa (Teleostei: Sparidae) in the Mediterranean Sea

2006 ◽  
Vol 63 (1) ◽  
pp. 128-139 ◽  
Author(s):  
C. Jadot ◽  
A. Donnay ◽  
M.L. Acolas ◽  
Y. Cornet ◽  
M.L. Bégout Anras
Keyword(s):  
Mediterranean Sea ◽  
Activity Patterns ◽  
Home Range Size ◽  
Body Cavity ◽  
Habitat Utilization ◽  
The Body ◽  
Night Time ◽  
Sarpa Salpa ◽  
The Mediterranean ◽  
The One

Abstract Acoustic telemetry was used to record diel movement and habitat utilization of the salema (Sarpa salpa) (Teleostei: Sparidae) during three consecutive summers from 2000 to 2002 in the Calvi and Achiarina bays of Corsica in the Mediterranean Sea. A total of 18 fish was equipped with acoustic transmitters inserted in the body cavity, 13 were tracked in the Bay of Calvi (275 mm ± 26.9 LF), and 5 in Achiarina Bay (260 mm ± 33.6 LF). Two different systems were used to track the fish. The one used in the Bay of Calvi was a manual receiver and a directional hydrophone. The second system, used in Achiarina Bay, was a radio-acoustic-positioning (RAP) system that continuously monitored the movements of the fish. Fish positions were put in a geographic information system (GIS) with information on the substratum and depth. Two patterns of behaviour could be identified in the three years. Either the fish had clearly defined daytime as opposed to night-time areas of residency, characterized by different depths and substrata or the fish persistently occupied the same sites during both day and night. In the Bay of Calvi, six fish were released 1 km from the capture site. All of them showed homing ability and returned to the site within 48 h.

scholarly journals Variations in Moisture Supply from the Mediterranean Sea during Meteorological Drought Episodes over Central Europe

Atmosphere ◽  
2018 ◽  
Vol 9 (7) ◽  
pp. 278 ◽  
Author(s):  
Milica Stojanovic ◽  
Anita Drumond ◽  
Raquel Nieto ◽  
Luis Gimeno
Keyword(s):  
Linear Relationship ◽  
Mediterranean Sea ◽  
Central Europe ◽  
Linear Regression Analysis ◽  
Meteorological Drought ◽  
Time Analysis ◽  
Moisture Supply ◽  
The Mediterranean ◽  
The One ◽  
Annual Summer

The climate in Central Europe (CEU) during the 20th century is characterized by an overall temperature increase. Severe and prolonged drought events began occurring towards the end and these have continued into the 21st century. This study aims to analyze variations in the moisture supply from the Mediterranean Sea (MDS) during meteorological drought episodes occurring over the CEU region over the last three decades. A total of 51 meteorological drought episodes (22 with summer onsets, and 29 with winter) are identified over the CEU during the period 1980–2015 through the one-month Standardized Precipitation Evapotranspiration Index (SPEI-1), and their respective indicators, including duration, severity, intensity, and peak values, are then computed. Lagrangian forward-in-time analysis reveals that negative anomalies of moisture coming from the MDS prevail in all episodes except seven. Linear regression analysis between variations in the MDS anomalies and indicators of the drought episodes shows a significant linear relationship between severity, duration, peak values (winter), and MDS anomalies, which implies that drought episodes last longer and are more severe with an increase in the negative anomaly of moisture supply from the MDS. Nevertheless, no linear relationship is found between the intensity and peak values (annual, summer) of drought episodes and anomalies in the moisture contribution from the MDS.

scholarly journals Mediterranean Tropical-Like Cyclones in Present and Future Climate

2014 ◽  
Vol 27 (19) ◽  
pp. 7493-7501 ◽  
Author(s):  
Leone Cavicchia ◽  
Hans von Storch ◽  
Silvio Gualdi
Keyword(s):  
Climate Change ◽  
Mediterranean Sea ◽  
Tropical Cyclones ◽  
Dynamical Evolution ◽  
Climate Change Scenarios ◽  
Moderate Increase ◽  
High Resolution Data ◽  
The Mediterranean ◽  
The One

Abstract The Mediterranean has been identified as one of the most responsive regions to climate change. It has been conjectured that one of the effects of a warmer climate could be to make the Mediterranean Sea prone to the formation of hurricanes. Already in the present climate regime, however, a few of the numerous low pressure systems that form in the area develop a dynamical evolution similar to the one of tropical cyclones. Even if their spatial extent is generally smaller and the life cycle shorter compared to tropical cyclones, such storms produce severe damage on the highly populated coastal areas surrounding the Mediterranean Sea. This study, based on the analysis of individual realistically simulated storms in homogeneous long-term and high-resolution data from multiple climate change scenarios, shows that the projected effect of climate change on Mediterranean tropical-like cyclones is decreased frequency and a tendency toward a moderate increase of intensity.

scholarly journals Interannual variability of the Mediterranean trophic regimes from ocean color satellites

2015 ◽  
Vol 12 (17) ◽  
pp. 14941-14980 ◽  
Author(s):  
N. Mayot ◽  
F. D'Ortenzio ◽  
M. Ribera d'Alcalà ◽  
H. Lavigne ◽  
H. Claustre
Keyword(s):  
Spatial Distribution ◽  
Mediterranean Sea ◽  
Interannual Variability ◽  
Deep Convection ◽  
Regional Scale ◽  
Ocean Color ◽  
Run Off ◽  
The Mediterranean ◽  
The One ◽  
The Impact

Abstract. D'Ortenzio and Ribera d'Alcalà (2009, DR09 hereafter) divided the Mediterranean Sea into "bioregions" based on the climatological seasonality (phenology) of phytoplankton. Here we investigate the interannual variability of this bioregionalization. Using 16 years of available ocean color observations (i.e. SeaWiFS and MODIS), we analyzed the spatial distribution of the DR09 trophic regimes on an annual basis. Additionally, we identified new trophic regimes, with seasonal cycles of phytoplankton biomass different from the DR09 climatological description and named "Anomalous". Overall, the classification of the Mediterranean phytoplankton phenology proposed by DR09 (i.e. "No Bloom", "Intermittently", "Bloom" and "Coastal"), is confirmed to be representative of most of the Mediterranean phytoplankton phenologies. The mean spatial distribution of these trophic regimes (i.e. bioregions) over the 16 years studied is also similar to the one proposed by DR09. But at regional scale some annual differences, in their spatial distribution and in the emergence of "Anomalous" trophic regimes, were observed compared to the DR09 description. These dissimilarities with the DR09 study were related to interannual variability in the sub-basin forcing: winter deep convection events, frontal instabilities, inflow of Atlantic or Black Sea Waters and river run-off. The large assortment of phytoplankton phenologies identified in the Mediterranean Sea is thus verified at interannual level, confirming the "sentinel" role of this basin to detect the impact of climate changes on the pelagic environment.

Evaluating Cultural Routes for a Network of Competitive Cities in the Mediterranean Sea: The Eastern Monasticism in Western Mediterranean Area

2014 ◽  
Vol 1073-1076 ◽  
pp. 1418-1422 ◽  
Author(s):  
Francesco Calabrò ◽  
Daniele Campolo ◽  
Giuseppina Cassalia ◽  
Carmela Tramontana
Keyword(s):  
Mediterranean Sea ◽  
Southern Italy ◽  
Mediterranean Area ◽  
Western Mediterranean ◽  
General Assembly ◽  
Mediterranean History ◽  
Geographical Position ◽  
The Mediterranean ◽  
The One ◽  
Cultural Routes

Calabria region (Southern Italy) has become the nerve center of historical events, decisive for the Mediterranean sea destiny, because of its geographical position, its centrality in the Mediterranean area, the peculiarities of the district and the wealth of natural resources. The effects of its role in the Mediterranean history are still visible in its natural, urban and social structure, thus giving the region a large number of cultural and environmental values, which find root in the three preceding millennia. The paper, starting from the most historic routes that have affected the Calabrian coast, aims to highlight the one that has the greatest impact on the culture of the region trying to figure out if it is possible to identify, protect and promote a cultural route according to the ICOMOS Charter of Cultural Routes criteria, devised by the ICOMOS’ international Scientific Committee of Cultural Routes (CIIC) and ratified by the 16th General Assembly of ICOMOS, in Quebec (Canada), October 4, 2008.

scholarly journals The meteoroid above Mediterranean Sea on July, 6th 2002 was a fragment of a cometary nucleus?

2009 ◽  
Vol 5 (S263) ◽  
pp. 246-248
Author(s):  
Klim I. Churyumov ◽  
Vitaly G. Kruchynenko ◽  
Larissa S. Chubko ◽  
Tatyana K. Churyumova
Keyword(s):  
Mediterranean Sea ◽  
High Probability ◽  
Cometary Nucleus ◽  
The Body ◽  
Initial Weight ◽  
Earth’S Atmosphere ◽  
Earth's Atmosphere ◽  
The Mediterranean

AbstractIt is shown, that the explosion of the bolide above the Mediterranean sea on July, 6th 2002 with a high probability was a fragment of an icy cometary nucleus which initial weight was equal approximately to 7 ⋅ 108 grams. This follows from the determined energy of the outburst equal to 26kT of TNT (Brown et al. 2002). We think that this energy refers to the height of the maximal braking of the body in the Earth's atmosphere. At the speed of 20.3 km/s accepted by authors, the weight of a body at this height is equal 5 ⋅ 108 gr, and at the entrance in the atmosphere it was approximately of 7 ⋅ 108 gr.

scholarly journals Fireball on 6 July 2002 over the Mediterranean Sea is a fragment of the comet's nucleus

2012 ◽  
Vol 10 (H16) ◽  
pp. 172-172
Author(s):  
Klim Churyumov ◽  
Vitaly G. Kruchinenko ◽  
Tetyana Churyumova ◽  
Alyona Mozgova
Keyword(s):  
United States ◽  
Mediterranean Sea ◽  
The United States ◽  
The Body ◽  
York Academy ◽  
Earth’S Atmosphere ◽  
Geostationary Satellites ◽  
Earth's Atmosphere ◽  
The Mediterranean ◽  
Near Earth Objects

AbstractToday has been known for a considerable number of cases, the explosion of large meteoroids in Earth's atmosphere. This is confirmed by the data of registrations of fireballs by devices and the results of measurements in the atmosphere of bright light flashes by photodiodes Corporation “Sandia Laboratories", which were installed on geostationary satellites of the United States, and also by data of measurements of acoustic-gravitational waves from the thermal explosions of meteoroids [ReVelle D.O. Historical detection of atmospheric impacts by large bolides using acoustic-gravity waves, Near-Earth Objects, Ed. Remo J. Annals of the New York Academy of Sciences 882, 284-302, 1997]. The work [Brown P., Spalding R.E., ReVelle D.O. et al. The flux of small near-Earth objects colliding with the Earth, Nature 420, 314-316, 2002.] shows the results of processing the observations of flashes of large meteoroids in Earth's atmosphere, obtained with the help of geostationary satellites of the United States. Over 8.5 years (from February 1994 to September 2002) 300 such events were registered. On July 6, 2002 r over the Mediterranean Sea a bright fireball was registered. The energy of the meteoroid explosion that caused the phenomenon of the car, was 26 kilotons of TNT [Brown et al., 2002]. We believe that this energy refers to the height of the full bracking of the meteoroid. At a speed of 20.3 km/s adopted by the authors, body mass at this height is 5 × 108 g, and when entering the Earth's atmosphere, it was about 7 × 108 g. Based on the obtained values of the mass, we conclude that the exploded meteoroid, causing a phenomenon of the fireball was a fragment of the comet nucleus. In processing the density of the body were taken 1 g/cm3 and the initial velocity (~30 km/s).

scholarly journals Troubled Water in the Eastern Mediterranean. Turkey Challenges Greece and Cyprus Regarding Energy Resources

2021 ◽  
Vol 69 (1) ◽  
pp. 133-152
Author(s):  
Heinz-Jürgen Axt
Keyword(s):  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
International Community ◽  
The Other ◽  
Energy Resources ◽  
Law Of The Sea ◽  
Competitive Prices ◽  
Negative Perceptions ◽  
The Mediterranean ◽  
The One

Abstract The conflict between Turkey on the one hand and Greece and Cyprus on the other was exacerbated when Turkey and Libya reached an agreement on the delimitation of maritime zones to explore and exploit energy resources in late 2019. The countries were on the brink of military confrontation. This was the latest climax of a longer period of conflict and mistrust, during which negative perceptions became more entrenched on all sides. Energy is globally high in demand but exploiting resources in the Mediterranean Sea at competitive prices is difficult. The international community has developed an ambitious Law of the Sea, but its interpretation is controversial. Compromises are needed to de-escalate. What might serve as a ‘bridge over troubled waters’ in the Eastern Mediterranean? The author comments on the available options.

scholarly journals An overview of bottom trawl selectivity in the Mediterranean Sea

2021 ◽  
Vol 22 (3) ◽  
pp. 566
Author(s):  
ALESSANDRO LUCCHETTI ◽  
MASSIMO VIRGILI ◽  
CLAUDIO VASAPOLLO ◽  
ANDREA PETETTA ◽  
GIADA BARGIONE ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Bottom Trawl ◽  
Bottom Trawling ◽  
Fish Stocks ◽  
Biological Impacts ◽  
Global Concern ◽  
The Mediterranean ◽  
The One ◽  
First Maturity ◽  
Ecologically Sustainable

In the Mediterranean Sea, where bottom trawling for demersal species is the most important fishery in terms of landings, around 75% of the assessed fish stocks are overfished. Its status as one of the world’s most heavily exploited seas and the one subject to the highest trawling pressure has become a global concern. An extensive review of bottom trawl selectivity studies was performed to assess the sustainability of this fishery in the Mediterranean; the selectivity parameters were collected from 93 peer-reviewed publications of 10 countries, totalling 742 records and 65 species. The review highlighted that i) the catch of bottom trawls commonly employed in the Mediterranean, even complying with current regulations on codend meshes, still includes immature individuals for 64-68% of the species investigated, and individuals under the minimum conservation reference size (MCRS) for 78% of the species investigated, and that ii) the MCRS set for 59% of the species analyzed is well below their length at first maturity, and is therefore ecologically inadequate. Although square-mesh codends are slightly more selective, the models developed herein demonstrate that improving size and species selectivity would require considerably larger meshes, which may significantly reduce profitability. The urgent need to reduce the biological impacts of bottom trawling in the Mediterranean should be addressed by promoting the adoption of more ecologically sustainable fishing gears through the introduction of more selective meshes or gear modifications.

scholarly journals Zebrus pallaoroi sp. nov.: a new species of goby (Actinopterygii: Gobiidae) from the Mediterranean Sea with a dna-based phylogenetic analysis of the Gobius-lineage

2021 ◽  
pp. 1-33
Author(s):  
Marcelo Kovačić ◽  
Radek Šanda ◽  
Katarína Čekovská ◽  
Tereza Soukupová ◽  
Jasna Vukić
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Phylogenetic Relationships ◽  
Phylogenetic Analyses ◽  
The Body ◽  
Integrative Approach ◽  
Fish Family ◽  
Posterior Nostril ◽  
The Mediterranean ◽  
A New Species

Abstract The gobies (Gobiidae) are the most diverse fish family in the Mediterranean Sea. Nevertheless, knowledge on their diversity, taxonomy, and phylogenetic relationships is still inadequate. The phylogenetic analyses reveal two genetically highly distinct clades among specimens identified as Zebrus zebrus. A new species, Zebrus pallaoroi sp. nov., is described based on an integrative approach. The neotype of Zebrus zebrus is designated. Genetic data confirm a pronounced level of divergence between Z. pallaoroi and Z. zebrus, with the mean genetic distance on cytochrome b being 18.1% and 1.07% on rhodopsin. Phylogenetic relationships within the Gobius-lineage were estimated on both markers. Morphologically, Z. pallaoroi is distinguished from the only congener Z. zebrus by having a snout longer than its eye, posterior nostril about 4/5–9/10 of the anterior nostril, eye diameter 4.3−4.7 in head length, ventrolateral head ridges transversally connected on the anterior side by a short transversal ridge, anterior membrane midline depth about 2/3 of the spinous ray, head canal pore α diameter about half of the distance between pore ρ and ρ1, suborbital sensory papillae row 5i going downwards to or near the level of row d, the distance between row 5i and row d absent or much smaller than the length of row 5i, and the body with ten to eleven vertical dark brown bands. Zebrus pallaoroi was recorded from the southern Adriatic, northern Ionian, and northern and western Aegean Seas, and is a cryptobenthic fish from very shallow waters.

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