Seasonal rubisco enzyme activities and caulerpenyne levels in invasive Caulerpa racemosa var. cylindracea and native Caulerpa prolifera

Caulerpa racemosa var.cylindracea (C.racemosa) is an invasive marine seaweed in the Mediterranean Sea. Since no valid eradication method has been existed in the scientific literature on this species, it has currently been continuing its invasion along the coastlines of 13 Mediterranean countries. One of the important factors responsible for its invasion is thought as its toxic secondary metabolite, caulerpenyne (CYN). The present paper investigates seasonal changes in the secondary metabolite CYN, and rubisco enzyme (EC 4.1.1.39) activities of the invasive C. racemosa and native C. prolifera. Inasmuch as no correlation between CYN level and rubisco enzymic activity was observed in these species, it is considered that the regulation of CYN synthesis caulerpenyne and rubisco enzymic activity might be controlled independently. In conclusion, the further analysis on the rubisco enzymic activity determinations with MEP and mevalonate pathway which are considered responsible for CYN bio-synthesis should be studied in great detail in invasive and native Caulerpa species in the Mediterranean Sea to get the overall picture.

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Formation of propagules on an invasive strain of Caulerpa racemosa (Chlorophyta) in the Mediterranean Sea

Phycologia ◽

10.2216/i0031-8884-41-5-533.1 ◽

2002 ◽

Vol 41 (5) ◽

pp. 533-535 ◽

Cited By ~ 31

Author(s):

Line Renoncourt ◽

Alexandre Meinesz

Keyword(s):

Mediterranean Sea ◽

Caulerpa Racemosa ◽

Invasive Strain ◽

The Mediterranean

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Characterizing the Evolution of the Container Traffic Share in the Mediterranean Sea Using Hierarchical Clustering

Journal of Marine Science and Engineering ◽

10.3390/jmse6040121 ◽

2018 ◽

Vol 6 (4) ◽

pp. 121 ◽

Cited By ~ 1

Author(s):

Manel Grifoll ◽

Thanassis Karlis ◽

M. Ortego

Keyword(s):

Mediterranean Sea ◽

Hierarchical Clustering ◽

System Analysis ◽

Compositional Data ◽

Eastern Mediterranean ◽

Compositional Data Analysis ◽

Mediterranean Countries ◽

The Mediterranean ◽

Combination Of Methods ◽

Port Infrastructure

This research investigates the traffic share evolution of the container throughput in the Mediterranean ports from 2000 to 2015 considering hierarchical clustering and concentration indexes. Compositional Data analysis techniques are used to illustrate periods with similar traffic share composition. Two different regions (East and West) in the Mediterranean Sea (Med) are selected in the function of the long haul services. The standard concentration indexes (i.e., concentration ratio, Gini coefficient, and Normalized Herfindahl-Hirschman) reveal a gentle decreasing of the concentration with relevant fluctuations mainly in the East region. This is due to the investment in port infrastructure in the area resulting from privatization initiatives in many Eastern Mediterranean countries. The periods obtained from the hierarchical clustering show a differentiated pattern in traffic share composition. For these periods, the shift-share results are consistent with traffic fluctuations and in line with the evolution of the concentration indexes. The combination of methods has allowed a good interpretation of the spatial and temporal evolution of the Med ports’ traffic being the methodology applicable elsewhere in the context of port system analysis.

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Contribution à l’étude de Caulerpa prolifera (Forsskål) Lamouroux (Chlorophycée-Caulerpale). III - Biomasse et productivité primaire dans une Station des côtes continentales françaises de la Méditerranée. Contribution to the Study of Caulerpa prolifera (Forsskål) Lamouroux (Chlorophyceae, Caulerpales). III. Standing Crop and Primary Productivity at a Station off the French Continental Coast of the Mediterranean Sea

Botanica Marina ◽

10.1515/botm.1979.22.2.123 ◽

1979 ◽

Vol 22 (2) ◽

Cited By ~ 6

Author(s):

A. Meinesz

Keyword(s):

Mediterranean Sea ◽

Primary Productivity ◽

Standing Crop ◽

Continental Coast ◽

Caulerpa Prolifera ◽

The Mediterranean

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Rough Waters: American Involvement with the Mediterranean in the Eighteenth and Nineteenth Centuries: An Introduction

Rough Waters ◽

10.5949/liverpool/9780986497346.003.0001 ◽

2010 ◽

pp. 1-6

Author(s):

Silvia Marzagalli ◽

James R. Sofka ◽

John J. McCusker

Keyword(s):

Sixteenth Century ◽

Mediterranean Sea ◽

Modern Times ◽

Transport Services ◽

Mediterranean Countries ◽

Mediterranean World ◽

History Of ◽

The Mediterranean ◽

Early Modern Times ◽

Eighteenth And Nineteenth Centuries

In his path-breaking study of the sixteenth-century Mediterranean world, Fernand Braudel identified the “invasion” by Atlantic ships and merchants as one of the major, long-lasting events in the history of the Mediterranean Sea in early modern times.2 According to Braudel, the arrival of English, Flemish and French Atlantic vessels and their captains began discretely in the early sixteenth century as a result of an increased Mediterranean demand for cheap transport services. Within a few decades, however, northern Europeans evolved from a complementary to a commanding position in the region. Atlantic shipping and trade came to dominate the most lucrative Mediterranean trades, and the Atlantic powers steadily imposed their rules and politics on Mediterranean countries, progressively subordinating the region to Atlantic interests. Their ...

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Relative Sea-Level Rise and Potential Submersion Risk for 2100 on 16 Coastal Plains of the Mediterranean Sea

Water ◽

10.3390/w12082173 ◽

2020 ◽

Vol 12 (8) ◽

pp. 2173 ◽

Cited By ~ 3

Author(s):

Fabrizio Antonioli ◽

Giovanni De Falco ◽

Valeria Lo Presti ◽

Lorenzo Moretti ◽

Giovanni Scardino ◽

...

Keyword(s):

Sea Level Rise ◽

Mediterranean Sea ◽

Sea Level ◽

Vertical Movement ◽

Observation Data ◽

Coastal Plains ◽

Coastal Zones ◽

High Definition ◽

Mediterranean Countries ◽

The Mediterranean

The coasts of the Mediterranean Sea are dynamic habitats in which human activities have been conducted for centuries and which feature micro-tidal environments with about 0.40 m of range. For this reason, human settlements are still concentrated along a narrow coastline strip, where any change in the sea level and coastal dynamics may impact anthropic activities. In the frame of the RITMARE and the Copernicus Projects, we analyzed light detection and ranging (LiDAR) and Copernicus Earth Observation data to provide estimates of potential marine submersion for 2100 for 16 small-sized coastal plains located in the Italian peninsula and four Mediterranean countries (France, Spain, Tunisia, Cyprus) all characterized by different geological, tectonic and morphological features. The objective of this multidisciplinary study is to provide the first maps of sea-level rise scenarios for 2100 for the IPCC RCP 8.5 and Rahmstorf (2007) projections for the above affected coastal zones, which are the locations of touristic resorts, railways, airports and heritage sites. On the basis of our model (eustatic projection for 2100, glaciohydrostasy values and tectonic vertical movement), we provide 16 high-definition submersion maps. We estimated a potential loss of land for the above areas of between about 148 km2 (IPCC-RCP8.5 scenario) and 192 km2 (Rahmstorf scenario), along a coastline length of about 400 km.

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Interactive effect of sedimentation and Caulerpa racemosa var. cylindracea invasion on macroalgal assemblages in the Mediterranean Sea

Estuarine Coastal and Shelf Science ◽

10.1016/j.ecss.2005.03.010 ◽

2005 ◽

Vol 64 (2-3) ◽

pp. 467-474 ◽

Cited By ~ 59

Author(s):

Luigi Piazzi ◽

David Balata ◽

Giulia Ceccherelli ◽

Francesco Cinelli

Keyword(s):

Mediterranean Sea ◽

Interactive Effect ◽

Caulerpa Racemosa ◽

The Mediterranean

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Wave Energy in the Mediterranean Sea: Resource Assessment, Deployed WECs and Prospects

Energies ◽

10.3390/en14164764 ◽

2021 ◽

Vol 14 (16) ◽

pp. 4764

Author(s):

Evangelia Dialyna ◽

Theocharis Tsoutsos

Keyword(s):

Mediterranean Sea ◽

Wave Energy ◽

Environmental Conditions ◽

Energy Resource ◽

Resource Assessment ◽

Energy Sector ◽

Mediterranean Country ◽

Mediterranean Islands ◽

Mediterranean Countries ◽

The Mediterranean

A detailed review of wave energy resource assessment and the state-of-the-art of deployed wave energy converters (WECs) in real environmental conditions in the Mediterranean Sea have been analysed in this study. The installed power of the several deployed WECs in the Mediterranean Sea varies between 3–2500 kW. Ten project cases of deployed WECs in the basin are presented, with their analysis of the essential features. Five different types of WEC have already been tested under real environmental conditions in Italy, Greece, Israel and Gibraltar, with Italy being the Mediterranean country with the most deployed WECs. The main questions of the relevant studies were the ongoing trends, the examination of WECs in combination with other renewable sources, the utilising of WECs for desalination, and the prospects of wave energy in the Mediterranean islands and ports. This paper is the first comprehensive study that overviews the recent significant developments in the wave energy sector in the Mediterranean countries. The research concludes that the advances of the wave energy sector in the Mediterranean Sea are significant. However, in order to commercialise WECs and wave energy exploitation to become profitable, more development is necessary.

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Long-term spatiotemporal dynamics of cephalopod assemblages in the Mediterranean Sea

Scientia Marina ◽

10.3989/scimar.04841.20a ◽

2020 ◽

Vol 83 (S1) ◽

pp. 33

Author(s):

Antoni Quetglas ◽

Maria Valls ◽

Francesca Capezzuto ◽

Loredana Casciaro ◽

Danila Cuccu ◽

...

Keyword(s):

Mediterranean Sea ◽

Biodiversity Loss ◽

Longitudinal Gradient ◽

Eastern Basin ◽

Mediterranean Countries ◽

Spatial Differences ◽

The Mediterranean ◽

Increasing Temperature ◽

Trawl Surveys

The Mediterranean Sea shows a trend of increasing temperature and decreasing productivity from the western to the eastern basin. In this work we investigate whether this trend is reflected in the cephalopod assemblages found throughout the Mediterranean. Data obtained with bottom trawl surveys carried out during the last 22 years by EU Mediterranean countries were used. In addition to analysing spatial differences in cephalopod assemblages, we also analysed putative temporal changes during the last two decades. For this purpose, the basin was spatially divided into bioregions, the trawling grounds were subdivided into depth strata, and the dataset was split into two time series of 11 years each. All analyses were done using PRIMER software. The species richness did not vary with the longitudinal gradient, though in most bioregions it showed a mild decrease with depth before plummeting in the deepest waters. Cluster analysis revealed four different bathymetric assemblages in all bioregions. Despite the contrasting conditions between basins and the claims of biodiversity loss, our study revealed that spatial and temporal differences during the last two decades were restricted to changes in the relative abundance of species from a common pool of species inhabiting the whole Mediterranean.

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