Evaluation of the effects of Caulerpa cylindracea on Posidonia oceanica through the analysis of primary production and morphometric characteristics

2020 ◽  
Author(s):  
Marco Boschi ◽  
Giulia Caporale ◽  
Lorenzo Pasculli ◽  
Daniele Piazzolla ◽  
Emanuele Mancini
Keyword(s):  
Primary Production ◽  
Biodiversity Loss ◽  
Posidonia Oceanica ◽  
Potential Interaction ◽  
Cymodocea Nodosa ◽  
High Concentration ◽  
Colonization Ability ◽  
The Mediterranean ◽  
Italian Coasts ◽  
Invasive Alga

<p>Today, biological invasions represent a threat to endemic animal and plant communities and a major cause of biodiversity loss worldwide. In the Mediterranean Sea, there are about 100 species of macrophytes, introduced intentionally or accidentally, most of which are highly invasive. Among these, the macroalga <em>Caulerpa cylindracea</em> Sonder, 1845, entered in the Mediterranean basin since 1990 through the Suez Canal and now it is widespread along the Italian coasts. This species is able to colonize a high number of coastal substrates and it can affect the density of some seagrasses, such as <em>Cymodocea nodosa</em> (Ucria) Ascherson, 1870 and <em>Posidonia oceanica</em> (L.) Delile, 1813. Its colonization ability is enhanced in environments with a high concentration of nutrients and its growth can modify the redox potential of the substrate making it unsuitable for the establishment of other seagrasses and algae. This work aimed to analyse and describe the potential interaction between the <em>C. racemosa</em> and <em>P. oceanica</em> in the coastal area of Civitavecchia. The potential effects of this interaction were studied inside of two different <em>P. oceanica</em> patches, located at a depth of 3-5 m and characterized by the presence/absence of the invasive alga, through the morphostructural analysis of the two species. In particular, the seagrass growth and primary production were analysed using some direct and indirect techniques (phenology and lepidochronology), while for the alga were analysed the phenological characteristics and the percentage of coverage of the substrate. The sampling campaigns were carried out in two different months of the same year, June and October 2019, in order to observe both the growth phase and the maximum bloom phase of the <em>C. racemosa.</em></p>

scholarly journals Goniadella bobrezkii (Annenkova, 1929) (Annelida, Polychaeta): first record in the Italian waters

Check List ◽  
2019 ◽  
Vol 15 (1) ◽  
pp. 125-130
Author(s):  
Emanuele Mancini ◽  
Francesco Tiralongo ◽  
Daniele Ventura ◽  
Andrea Bonifazi
Keyword(s):  
Mediterranean Sea ◽  
First Record ◽  
Posidonia Oceanica ◽  
Posterior Spine ◽  
The Mediterranean ◽  
Italian Coasts

Goniadella bobrezkii (Annenkova, 1929) is a small goniadid worm identifiable by the number of anterior uniramous parapodia and by the position of the posterior spine-like notochetae arising dorsal to dorsal cirri. Although it was already reported in the Mediterranean Sea, it has never been found in the Italian waters. This study represents the first generic and specific record of G. bobrezkii along Italian coasts. A total of 25 specimens were collected in a Posidonia oceanica (L.) Delile bed, depth of 7 m, off Civitavecchia (Rome).

First record of the Indo-Pacific gastropod Melibe fimbriata in the Adriatic Sea

2002 ◽  
Vol 82 (5) ◽  
pp. 923-924
Author(s):  
Marija Despalatović ◽  
Boris Antolić ◽  
Ivana Grubelić ◽  
Ante Žuljević
Keyword(s):  
Mediterranean Basin ◽  
Adriatic Sea ◽  
First Record ◽  
Posidonia Oceanica ◽  
Cymodocea Nodosa ◽  
The Mediterranean ◽  
The Mediterranean Basin

The specimens of Melibe fimbriata were found during October 2001 in Stari Grad Bay (Island of Hvar, Croatia) in Cymodocea nodosa and Posidonia oceanica beds on sandy and sandy–muddy bottoms at depths of 2 to 15 m. Presently, this is the northernmost record of this lessepsian immigrant in the Mediterranean basin.

Fate of primary production in Posidonia oceanica meadows of the Mediterranean

1997 ◽  
Vol 59 (3-4) ◽  
pp. 307-321 ◽  
Author(s):  
Gérard Pergent ◽  
Valérie Rico-Raimondino ◽  
Christine Pergent-Martini
Keyword(s):  
Primary Production ◽  
Posidonia Oceanica ◽  
The Mediterranean

Xanthophyll cycle-related photoprotective mechanism in the Mediterranean seagrasses Posidonia oceanica and Cymodocea nodosa under normal and stressful hypersaline conditions

2013 ◽  
Vol 109 ◽  
pp. 14-24 ◽  
Author(s):  
L. Marín-Guirao ◽  
J.M. Ruiz ◽  
J.M. Sandoval-Gil ◽  
J. Bernardeau-Esteller ◽  
C.M. Stinco ◽  
...  
Keyword(s):  
Xanthophyll Cycle ◽  
Posidonia Oceanica ◽  
Cymodocea Nodosa ◽  
The Mediterranean

Ecophysiological plasticity of shallow and deep populations of the Mediterranean seagrasses Posidonia oceanica and Cymodocea nodosa in response to hypersaline stress

2014 ◽  
Vol 95 ◽  
pp. 39-61 ◽  
Author(s):  
Jose Miguel Sandoval-Gil ◽  
Juan Manuel Ruiz ◽  
Lázaro Marín-Guirao ◽  
Jaime Bernardeau-Esteller ◽  
Jose Luis Sánchez-Lizaso
Keyword(s):  
Posidonia Oceanica ◽  
Cymodocea Nodosa ◽  
The Mediterranean ◽  
Hypersaline Stress

scholarly journals Primary production, stocks and fluxes in the Mediterranean seagrass Posidonia oceanica

1994 ◽  
Vol 106 ◽  
pp. 139-146 ◽  
Author(s):  
G Pergent ◽  
J Romero ◽  
C Pergent-Martini ◽  
M-A Mateo ◽  
C-F Boudouresque
Keyword(s):  
Primary Production ◽  
Posidonia Oceanica ◽  
The Mediterranean

Vancomycin Adsorption During in vitro Model of Hemoperfusion with HA380 Cartridge

Nephron ◽  
2021 ◽  
pp. 1-7
Author(s):  
Ilaria Godi ◽  
Anna Lorenzin ◽  
Silvia De Rosa ◽  
Gianlorenzo Golino ◽  
Maira Knust ◽  
...  
Keyword(s):  
Complete Removal ◽  
Potential Interaction ◽  
Blood Purification ◽  
Therapeutic Monitoring ◽  
High Concentration ◽  
Langmuir Isotherm Model ◽  
Vitro Model ◽  
Kinetics Of ◽  
Balanced Solution

<b><i>Introduction:</i></b> A critical point for using blood purification during sepsis may be the potential interaction with antimicrobial therapy, the mainstay of sepsis treatment. The aim of our study was to investigate the vancomycin removal during hemoperfusion (HP) using HA380 cartridge. <b><i>Methods:</i></b> This is an experimental study, in which 500 mL of solution was circulated in a closed-circuit (blood flow of 250 mL/min) simulating HP ran using HA380. Vancomycin was added to reach a through concentration or a very high concentration to evaluate the removal ratio (RR) during 120 min of HP. Comparison between blood-crystalloid solution and balanced solution was performed by using Kruskal-Wallis test. The kinetics of vancomycin removal and the adsorption isotherm were evaluated. <b><i>Results:</i></b> We found a complete removal of vancomycin at baseline through concentration of 23.0 ± 7.4 mg/L. Using extremely high concentration (baseline 777.0 ± 62.2 mg/L), RR was 90.1 ± 0.6% at 5 min and 99.2 ± 0.6% at 120 min. No difference in terms of RR was found between blood-crystalloid mixture and balanced solution. The kinetics of the vancomycin reduction followed an exponential decay. Repeated boluses (total amount of 2,000 mg) resulted in cumulative adsorption of 1,919.4 mg with RR of 96.6 ± 1.4%, regardless of the amount injected (100 vs. 500 mg). Vancomycin adsorption onto HA380 followed the Langmuir isotherm model. <b><i>Conclusions:</i></b> A considerable amount of vancomycin was rapidly removed during in vitro HP with HA380. Clinical studies are needed to determine whether this may lead to underdosing. Drug therapeutic monitoring is highly recommended when using HA380 for blood purification in patients receiving vancomycin.

scholarly journals Twenty-Three Years of Land-Use Changes Induced Considerable Threats to the Main Wetlands of Sardinia and Sicily (Italy) along the Mediterranean Bird Flyways

Diversity ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 240
Author(s):  
Alessandro Ferrarini ◽  
Marco Gustin ◽  
Claudio Celada
Keyword(s):  
Land Use ◽  
Habitat Degradation ◽  
Land Use Changes ◽  
Biodiversity Loss ◽  
Natura 2000 ◽  
Global Level ◽  
Natura 2000 Network ◽  
Stopover Sites ◽  
The Mediterranean ◽  
Agricultural Areas

Biodiversity loss has multiple causes, but habitat degradation through land-use change is the predominant driver. We investigated the effectiveness of the Natura 2000 network in preserving the main wetlands of the two largest islands of the Mediterranean region, whose conservation is critical for many avian species at European and global level, in a 23-year period (1990–2012). In Sardinia, the surroundings of 22 wetlands were affected by an increase in artificial areas (+64 ha/year) and decrease in agricultural (−54 ha/year) and natural (−17 ha/year) ones. In Sicily, the surroundings of 16 wetlands were impacted by an increase in agricultural areas (+50 ha/year) and decrease in natural and semi-natural ones (−62 ha/year). Results show that the Natura 2000 policies were effective in preserving wetlands (no shrinkages detected in both regions), but their surroundings experienced intense processes of degradation and artificialization in all the sub-periods considered (1990–2000, 2000–2006, 2006–2012), whose effects are now threatening waterbirds and wetland integrity. The enlargement of the existing Natura 2000 sites, the creation of new ones and the speedup of the application of the rules of the Habitats and Birds Directives seem necessary to counteract the rapid land-use changes around these important stopover sites.

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