scholarly journals Marine Biodiversity - Warming vs. Biological Invasions and overfishing in the Mediterranean Sea: Take care, ‘One Train can hide another’

2017 ◽  
Vol 2 (4) ◽  
Author(s):  
Charles F Boudouresque
Keyword(s):  
Biological Invasions ◽  
Mediterranean Sea ◽  
Marine Biodiversity ◽  
The Mediterranean

scholarly journals Protect the Natives to Combat the Aliens: Could Octopus vulgaris Cuvier, 1797 Be a Natural Agent for the Control of the Lionfish Invasion in the Mediterranean Sea?

2021 ◽  
Vol 9 (3) ◽  
pp. 308 ◽  
Author(s):  
Fabio Crocetta ◽  
Maria Shokouros-Oskarsson ◽  
Nikolaos Doumpas ◽  
Ioannis Giovos ◽  
Stefanos Kalogirou ◽  
...  
Keyword(s):  
Biological Invasions ◽  
Mediterranean Sea ◽  
Octopus Vulgaris ◽  
Major Threat ◽  
Global Biodiversity ◽  
The Mediterranean ◽  
Natural Agent

Biological invasions constitute a major threat to native ecosystems and to global biodiversity [...]

scholarly journals New Mediterranean Marine biodiversity records (June 2013)

2013 ◽  
Vol 14 (1) ◽  
pp. 238 ◽  
Author(s):  
I. SIOKOU ◽  
A.S. ATES ◽  
D. AYAS ◽  
J. BEN SOUISSI ◽  
T. CHATTERJEE ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Aegean Sea ◽  
Marine Biodiversity ◽  
Red Data Book ◽  
Gulf Of Tunis ◽  
The North ◽  
Levantine Sea ◽  
Data Book ◽  
The Mediterranean ◽  
Flora Of Cyprus

This paper concerns records of species that have extended their distribution in the Mediterranean Sea. The finding of the rare brackish angiosperm Althenia filiformis in the island of Cyprus is interesting since its insertion in the Red Data Book of the Flora of Cyprus is suggested. The following species enriched the flora or fauna lists of the relevant countries: the red alga Sebdenia dichotoma (Greece), the hydrachnid mite Pontarachna adriatica (Slovenia), and the thalassinid Gebiacantha talismani (Turkey). Several alien species were recorded in new Mediterranean localities. The record of the burrowing goby Trypauchen vagina in the North Levantine Sea (Turkish coast), suggests the start of spreading of this Lessepsian immigrant in the Mediterranean Sea. The findings of the following species indicate the extension of their occurrence in the Mediterranean Sea: the foraminifer Amphistegina lobifera (island of Zakynthos, Greece), the medusa Cassiopea andromeda (Syria), the copepod Centropages furcatus (Aegean Sea), the decapod shrimp Melicertus hathor (island of Kastellorizo, Greece), the crab Menoethius monoceros (Gulf of Tunis), the barnacles Balanus trigonus, Megabalanus tintinnabulum, Megabalanus coccopoma and the bivalves Chama asperella, Cucurbitula cymbium (Saronikos Gulf, Greece).

scholarly journals Current status and trends of biological invasions in the Lagoon of Venice, a hotspot of marine NIS introductions in the Mediterranean Sea

2015 ◽  
Vol 17 (10) ◽  
pp. 2943-2962 ◽  
Author(s):  
Agnese Marchini ◽  
Jasmine Ferrario ◽  
Adriano Sfriso ◽  
Anna Occhipinti-Ambrogi
Keyword(s):  
Biological Invasions ◽  
Mediterranean Sea ◽  
Current Status ◽  
Lagoon Of Venice ◽  
Status And Trends ◽  
The Mediterranean

A neural-based bio-regionalization of the Mediterranean Sea using satellite and Argo-float records

2020 ◽  
Author(s):  
Roy El Hourany ◽  
Chris Bowler ◽  
Carlos Mejia ◽  
Michel Crépon ◽  
Sylvie Thiria
Keyword(s):  
Mediterranean Sea ◽  
Deep Convection ◽  
Global Ocean ◽  
Marine Biodiversity ◽  
Intermediate Water ◽  
Tropical Ocean ◽  
Phytoplankton Diversity ◽  
Winter Convection ◽  
Phytoplankton Communities ◽  
The Mediterranean

<p>The regionalization of the Mediterranean Sea has been the subject of many studies. It is a miniature ocean where most of the processes of the global ocean are encountered (Lejeusne et al., 2010). Several features of the Mediterranean (near-tropical ocean in summer with a well-formed thermocline, near-polar ocean in winter with deep convection, multiple basins with different characteristics) make it a hotspot of marine biodiversity (Coll and al., 2010) and consequently vulnerable to climate change. It is therefore important to characterize the present state of the Mediterranean Sea with robust estimators in order to study the long-term evolution of this mesocosm.</p><p>We present a partitioning of the Mediterranean Sea in regions having well defined characteristics with respect to Sea Surface Temperature and surface chlorophyll observed by satellite, and Argo mixed layer depth. This regionalization was performed by using an innovative classification based on neural networks, the so-called 2S-SOM. Its major advantage is to consider the specificity of the variables by adding automatically, through machine learning, specific weights to each of them, which facilitates the classification and consequently highlights the regional correlations. The 2S-SOM provided a well differentiated regionalization of the Mediterranean Sea waters into seven bioregions governed by specific physical and biogeochemical processes such as Intermediate-water formation in the Aegean Sea, large surface currents in the Adriatic and the Alboran, deep winter convection phenomena in the Balearic and stratification phenomena during summer in the eastern part of the Mediterranean Sea.</p><p>Besides, in order to highlight the phytoplankton diversity in these regions, we processed the satellite ocean color observations with a specific neural network approach (SOM-PFT, El Hourany et al., 2019). As a result, specific phytoplankton communities characterized by their seasonal variability are associated with the obtained Mediterranean bioregions; the dominance of the Nanophytoplankton groups is largely observed in the western basin during the period ranging from autumn to spring. While the dominance of different types of cyanobacteria Synechococcus and Prochlorococcus is highlighted in summer and more precisely in the waters of the eastern basin. Diatoms dominate throughout the year in the coastal and shallow regions, which can be explained by the presence of terrigenous input necessary for the development of this type of phytoplankton. Diatoms also largely benefit from the strong deep convection in the Balearic Sea marked by a large bloom at the end of winter convection in March.</p><p>This work will be further extended to study the phytoplankton diversity at global scale using various data set from the Tara Oceans.</p>

scholarly journals Time lags in reporting of biological invasions: the case of Mediterranean Sea

2019 ◽  
Vol 20 (2) ◽  
pp. 469 ◽  
Author(s):  
ARGYRO ZENETOS ◽  
EIRINI GRATSIA ◽  
ANA-CRISTINA CARDOSO ◽  
KONSTANTINOS TSIAMIS
Keyword(s):  
Biological Invasions ◽  
Mediterranean Sea ◽  
Time Lag ◽  
Taxonomic Group ◽  
Time Lags ◽  
Indigenous Species ◽  
Prevention Measures ◽  
The Mediterranean ◽  
Taxonomic Groups ◽  
Non Indigenous Species

Time lags in non-indigenous species (NIS) reporting can create uncertainty in the analysis of NIS introduction rates, which can lead to inadequate actions, prevention measures and their evaluation. The present study aims to highlight time lags in marine NIS reporting in the Mediterranean Sea, i.e.: the time that mediates from the detection of a new NIS in the Mediterranean Sea until its publication. Our results revealed that the time lag in NIS reporting in the Mediterranean Sea has been considerably decreased during the last decades. There is also a noticeable difference in the time lag of reporting NIS in association with the taxonomic group of the species. Fish have generally shorter time lags in their reporting when compared with other taxonomic groups (e.g. macrophytes, Annelida, Bryozoa). Considering the widespread concern on marine introductions, it is essential to recognize the importance of taking into account time lags of reporting NIS that skew introduction patterns of marine NIS, permitting thus more accurate management assessments.

scholarly journals A Preliminary inventory of alien and cryptogenic species in Monastir Bay, Tunisia: spatial distribution, introduction trends and pathways

2019 ◽  
Vol 20 (3) ◽  
pp. 616 ◽  
Author(s):  
SAHAR CHEBAANE ◽  
JUAN SEMPERE-VALVERDE ◽  
SAHBI DORAI ◽  
ADNEN KACEM ◽  
YASSINE RAMZI SGHAIER
Keyword(s):  
Mediterranean Sea ◽  
Research Effort ◽  
Marine Biodiversity ◽  
Indigenous Species ◽  
Risk Area ◽  
Conservation Area ◽  
Monitoring Programs ◽  
Risk Areas ◽  
The Mediterranean ◽  
Cryptogenic Species

The Mediterranean Sea is a marine biodiversity hotspot under threat. One of the major impacts on its biological resources and services comes from the invasiveness of non-indigenous species (NIS). Nevertheless, NIS monitoring programs in the south basin of the Mediterranean Sea are in an early implementation stage. This study aims to describe NIS and cryptogenic species distribution in Monastir Bay (Tunisia) and to identify risk areas for the introduction and spread of invasive species, providing a baseline for future monitoring programs. To this end, a series of Rapid Assessment Surveys were carried out to identify NIS and cryptogenic species in one marina, five fishing ports, two aquaculture farms and the Special Conservation Area of the Kuriat islands. 24 species were found, of which 11 constitute new records for Monastir Bay, which represent a 33.3% of the total NIS reported in this Bay. Assemblages differed between substrata types, being NIS more abundant in artificial than in natural substrata. Regarding locations, Cap Monastir Marina was the most invaded site, the most transited by vessels and the only one visited by international sailing. Hence, this marina constitutes the main risk area to be monitored, although the fishing ports and fishing farms in the semi-enclosed coastal lagoon of Monastir Bay can also be considered as risk areas. Nevertheless, more research effort is needed in Monastir Bay in order to update the records of NIS and cryptogenic species and increase insight on the ecological evolution of these species and their related impacts on natural communities and marine resources.

scholarly journals Tracking Marine Alien Macroalgae in the Mediterranean Sea: The Contribution of Citizen Science and Remote Sensing

2021 ◽  
Vol 9 (3) ◽  
pp. 288 ◽  
Author(s):  
Anna Maria Mannino ◽  
Flavio Borfecchia ◽  
Carla Micheli
Keyword(s):  
Remote Sensing ◽  
Mediterranean Sea ◽  
Citizen Science ◽  
Management Strategies ◽  
Cost Effective ◽  
Distribution Patterns ◽  
Marine Biodiversity ◽  
Indigenous Species ◽  
The Mediterranean ◽  
Time Changes

The accelerating rate of the introduction of non-indigenous species (NIS) and the magnitude of shipping traffic make the Mediterranean Sea a hotspot of biological invasions. For the effective management of NIS, early detection and intensive monitoring over time and space are essential. Here, we present an overview of possible applications of citizen science and remote sensing in monitoring alien seaweeds in the Mediterranean Sea. Citizen science activities, involving the public (e.g., tourists, fishermen, divers) in the collection of data, have great potential for monitoring NIS. The innovative methodologies, based on remote sensing techniques coupled with in situ/laboratory advanced sampling/analysis methods for tracking such species, may be useful and effective tools for easily assessing NIS distribution patterns and monitoring the space/time changes in habitats in order to support the sustainable management of the ecosystems. The reported case studies highlight how these cost-effective systems can be useful complementary tools for monitoring NIS, especially in marine protected areas, which, despite their fundamental role in the conservation of marine biodiversity, are not immune to the introduction of NIS. To ensure effective and long-lasting management strategies, collaborations between researchers, policy makers and citizens are essential.

scholarly journals The Mediterranean Sea under siege: spatial overlap between marine biodiversity, cumulative threats and marine reserves

2011 ◽  
Vol 21 (4) ◽  
pp. 465-480 ◽  
Author(s):  
Marta Coll ◽  
Chiara Piroddi ◽  
Camille Albouy ◽  
Frida Ben Rais Lasram ◽  
William W. L. Cheung ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Marine Reserves ◽  
Marine Biodiversity ◽  
Spatial Overlap ◽  
The Mediterranean
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