scholarly journals Record of an established population of Palaemon macrodactylus Rathbun, 1902 (Decapoda, Palaemonidae) in the Mediterranean Sea: confirming a prediction

2014 ◽  
Vol 15 (3) ◽  
pp. 569 ◽  
Author(s):  
J. A. CUESTA ◽  
N. BETTOSO ◽  
G. COMISSO ◽  
C. FROGLIA ◽  
G. MAZZA ◽  
...  

The capture of larvae of Palaemon macrodactylus off Mallorca (Balearic Islands) has been recently reported as evidence of a potential presence of a population of this species in the Mediterranean Sea. Photos of this species, taken during dives in the Sacca di Goro (northern Adriatic) were published in the same year, but no specimen could be collected at that time. Herein we report the capture in 2013 of numerous individuals of the oriental shrimp, including ovigerous females, both in the Sacca di Goro and in the Lagoon of Marano and Grado (northern Adriatic Sea, Italy), confirming the existence of a well-established population of this species in the Mediterranean Sea.

2017 ◽  
Vol 51 (31-32) ◽  
pp. 1795-1834 ◽  
Author(s):  
Eduardo Suárez-Morales ◽  
Alenka Goruppi ◽  
Alessandra de Olazabal ◽  
Valentina Tirelli

2020 ◽  
Author(s):  
Isabella Scroccaro ◽  
Marco Zavatarelli ◽  
Tomas Lovato

<p>A high resolution three-dimensional (physical-biogeochemical) numerical model of the Northern Adriatic Sea has been implemented by coupling the European general circulation model - NEMO (Nucleus for European Modeling of the Ocean, https://www.nemo-ocean.eu/), with the marine biogeochemical model BFM (Biogeochemical Flux Model, bfm-community.eu/).</p><p>The modeling system is implemented with a horizontal resolution of about 800 m and a vertical resolution of 2 m, in z coordinates. The NEMO model is off-line nested at its open boundary with the Mediterranean Sea physical model of the Copernicus Marine Environment Monitoring Service (CMEMS, http://marine.copernicus.eu/).</p><p>The BFM component of the modeling system now includes a detailed and explicit representation of the benthic biogeochemical cycling (benthic fauna, organic matter, nutrients), as well as the dynamics of the benthic-pelagic processes.</p><p>The inclusion of the benthic dynamics in the 3D biogeochemical modeling of a shallow coastal basin, such as the Northern Adriatic Sea, represents an innovative application in the field of coastal and shelf biogeochemistry, since benthic biogeochemical processes can significantly constrain the coastal environmental dynamics.</p><p>Simulations have been performed in hindcasting mode with interannually varying physical (surface heat and water fluxes, including river runoff) and biogeochemical (river nutrient load) forcing. Results are validated against available observations from in situ and satellite platforms for sea surface temperatures, chlorophyll-a and dissolved inorganic nutrients, in order to explore the sensitivity of the pelagic environment to the inclusion of an explicit benthic dynamics and to evaluate issues related to model coupling and error/prediction limits.</p><p>The study is carried out in the framework of the European Project H2020 "ODYSSEA" (Operating a network of integrated observatory systems in the Mediterranean SEA, http://odysseaplatform.eu/), with the final goal to build an on-line forecasting modeling system of the Northern Adriatic Sea.</p>


2020 ◽  
Author(s):  
Valentina Turk ◽  
Nina Bednarsek ◽  
Jadran Faganeli ◽  
Blaženka Gasparovic ◽  
Michele Giani ◽  
...  

<p>Although the marginal seas represent only 7% of the total ocean area, the CO<sub>2</sub> fluxes are intensive and important for the carbon budget, exposing to an intense process of anthropogenic ocean acidification (OA). A decline in pH, especially in the estuarine waters, results also from the eutrophication-induced acidification. The Adriatic Sea is currently a CO<sub>2 </sub>sink with an annual flux of approximately -1.2 to -3 mol C m<sup>-2</sup> yr<sup>-1</sup> which is twice as low compared to the net sink rates in the NW Mediterranean (-4 to -5 mol C m<sup>-2</sup> yr<sup>-1</sup>). Based on the comparison of two winter cruises carried out in in the 25-year interval between 1983 and 2008, acidification rate of 0.003 pH<sub>T</sub> units yr<sup>−1</sup> was estimated in the northern Adriatic which is similar to the Mediterranean open waters (with recent estimations of −0.0028 ± 0.0003 units pH<sub>T</sub> yr<sup>−1</sup>) and the surface coastal waters (-0.003 ± 0.001 and -0.0044 ± 0.00006 pH<sub>T</sub> units yr<sup>−1</sup>). The computed Revelle factor for the Adriatic Sea, with the value of about 10, indicates that the buffer capacity is rather high and that the waters should not be particularly exposed to acidification. Total alkalinity (TA) in the Adriatic (2.6-2.7 mM) is in the upper range of TA measured in the Mediterranean Sea because riverine inputs transport carbonates dissolved from the Alpine dolomites and karstic watersheds. The Adriatic Sea is the second sub-basin (319 Gmol yr<sup>-1</sup>), following the Aegean Sea (which receives the TA contribution from the Black Sea), that contribute to the riverine TA discharges into the Mediterranean Sea. About 60% of the TA inflow into the Adriatic Sea is attributed to the Po river discharge with TA of ~3 mM and TA decreases with increasing salinity. Saturation state indicates that the waters of the Adriatic are supersaturated with respect to calcite (Ω<sub>Ca</sub>) and aragonite (Ω<sub>Ar</sub>) throughout the year. However, saturation states are considerably lower in the bottom water layers, due to the prevalence of benthic remineralization processes in the stratification period. The seasonal changes of the chemical and environmental conditions and relatively small size of the Adriatic Sea area the microbial community composition, function (growth, enzymatic activity) and carbon and nitrogen biogeochemical cycles. Significant effects on calcifying organisms and phytoplankton are expected while the effects of possible OA on microbially-driven processes are not known yet.</p>


2002 ◽  
Vol 18 (1-2) ◽  
pp. 75-84 ◽  
Author(s):  
Rosabruna La Ferla ◽  
Renata Zaccone ◽  
Maurizio Azzaro ◽  
Gabriella Caruso

Hydrobiologia ◽  
2016 ◽  
Vol 772 (1) ◽  
pp. 247-259 ◽  
Author(s):  
Tomaso Fortibuoni ◽  
Diego Borme ◽  
Gianluca Franceschini ◽  
Otello Giovanardi ◽  
Saša Raicevich

2021 ◽  
Vol 30 (1) ◽  
pp. 263-268
Author(s):  
Draško Holcer ◽  
◽  
Jure Miočić-Stošić ◽  
Tihana Vučur Blazinić ◽  
◽  
...  

In spring 2021, four unusual encounters with a group of false killer whales were recorded in Kvarner Bay, Northern Adriatic Sea. A minimum of five individuals, including a calf, were observed and two photos were taken corroborating species identification. These are the first reported sightings of the species in the Adriatic Sea since the mid-twentieth century. In addition, another encounter was revealed that occurred at the end of the 2000s in the same location and should be added to the list of historic observations. These reports were obtained by chance and show the importance of citizen science in obtaining data on rare marine species. The information gathered goes towards a better understanding of the distribution of the species in the Mediterranean Sea.


Harmful Algae ◽  
2010 ◽  
Vol 10 (1) ◽  
pp. 81-87 ◽  
Author(s):  
Emellina Cucchiari ◽  
Rossella Pistocchi ◽  
Laura Pezzolesi ◽  
Antonella Penna ◽  
Cecilia Battocchi ◽  
...  

2019 ◽  
Vol 100 (6) ◽  
pp. 987-994
Author(s):  
Vlado Malačič ◽  
Nedjeljka Žagar

AbstractThe marine icicles that form on coastal constructions (e.g., piers and railings) are very common in polar and subpolar areas. The occasional formation of icicles in the coastal zones of the Mediterranean Sea occurs in relation to cold-air outbreaks from the polar region, such as the one presented in this paper in February 2018. The air temperatures over the northern Adriatic Sea, the northernmost part of the Mediterranean, dropped below –2.1°C, a necessary condition for seawater to freeze, with salinity between 38.0 and 38.5 PSU. The formation of icicles on the coastal structures was further enabled by the bora wind and related high seas along the coast. Measurements presented in this paper confirm that the icicles in the Bay of Piran in the Gulf of Trieste (45.55°N) were formed from the seawater. The measured salinity level of the melted icicles, around 9 PSU, is a typical value reported for marine icicles in polar regions.


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