scholarly journals The transplanting of Posidonia oceanica: best practices for Italy

Author(s):  
Tiziano Bacci ◽  
Sante Francesco Rende ◽  
Barbara La Porta ◽  
Daniela Paganelli

In the last decades Posidonia oceanica meadows have been undergoing a strong regression phenomena mainly due to a rapid and high overexploitation of coastal zones (e.g. urban encroachment, waste dumping), that significantly altered their natural characteristics and heavily affected marine ecosystems in the whole Mediterranean Basin. As P. oceanica meadows are protected as priority habitat according to Habitat Directive 1992/43/CEE and Barcelona Convention (16.02.1976) and play an important role within some European Directives (WFD: 2000/60/EC and MSFD: 2008/56/EC) each type of human pressure that potentially produces impacts or changes on Posidonia meadows must be deeply assessed to avoid any negative effect on this sensitive habitat. In this contest, transplant of P. oceanica plants may be necessary to reduce meadow regression or to facilitate meadow recovery, reducing the sacrifice of those portions of meadows destroyed by infrastructural works. The Italian National Institute for Environmental Protection and Research (ISPRA) published the technical volume “Preservation and management of coastal-marine ecosystems: The transplanting of Posidonia oceanica" (in Italian language) with the aim to provide a useful tool for operators and Public Administrators involved in this topic at different levels. The manual contains all available information on transplant of P. oceanica derived from a critical analysis of the existing technical and scientific literature and reports, the legal aspects of this issue as well as the main biological characteristics of P. oceanica meadows. Moreover specific details about different transplant techniques and their results over time in some case studies in Italy, have been presented in specific datasheets enclosed to the manual.

2015 ◽  
Author(s):  
Tiziano Bacci ◽  
Sante Francesco Rende ◽  
Barbara La Porta ◽  
Daniela Paganelli

In the last decades Posidonia oceanica meadows have been undergoing a strong regression phenomena mainly due to a rapid and high overexploitation of coastal zones (e.g. urban encroachment, waste dumping), that significantly altered their natural characteristics and heavily affected marine ecosystems in the whole Mediterranean Basin. As P. oceanica meadows are protected as priority habitat according to Habitat Directive 1992/43/CEE and Barcelona Convention (16.02.1976) and play an important role within some European Directives (WFD: 2000/60/EC and MSFD: 2008/56/EC) each type of human pressure that potentially produces impacts or changes on Posidonia meadows must be deeply assessed to avoid any negative effect on this sensitive habitat. In this contest, transplant of P. oceanica plants may be necessary to reduce meadow regression or to facilitate meadow recovery, reducing the sacrifice of those portions of meadows destroyed by infrastructural works. The Italian National Institute for Environmental Protection and Research (ISPRA) published the technical volume “Preservation and management of coastal-marine ecosystems: The transplanting of Posidonia oceanica" (in Italian language) with the aim to provide a useful tool for operators and Public Administrators involved in this topic at different levels. The manual contains all available information on transplant of P. oceanica derived from a critical analysis of the existing technical and scientific literature and reports, the legal aspects of this issue as well as the main biological characteristics of P. oceanica meadows. Moreover specific details about different transplant techniques and their results over time in some case studies in Italy, have been presented in specific datasheets enclosed to the manual.


2001 ◽  
Vol 26 (1) ◽  
pp. 107-129 ◽  
Author(s):  
Helle Tegner Anker
Keyword(s):  

2017 ◽  
Vol 57 (4) ◽  
pp. 197-204 ◽  
Author(s):  
Ciro Esposito ◽  
Maria Escolino ◽  
Marcela Bailez ◽  
Steve Rothenberg ◽  
Mark Davenport ◽  
...  

This study aimed to assess malpractice in paediatric minimally invasive surgery (MIS), and attitudes, prevention strategies and mechanisms to support surgeons while they are under investigation. An observational, multicentric, questionnaire-based study was conducted. The survey questionnaire was sent via mail, and it comprised four sections. Twenty-four paediatric surgeons (average age 54.6 years), from 13 different countries, participated in this study. The majority had >15 years of experience in MIS. Three (12.5%) surgeons reported a total of five malpractice claims regarding their MIS activity. The reasons for the claims were a postoperative complication in 3/5 (60%) cases, a delayed/failed diagnosis in 1/5 (20%) cases and the death of the patient in 1/5 (20%) cases. The claims concluded with the absolution of the surgeon in all cases, and monetary compensation to the claimant in two (40%) cases. Eleven (45.8%) surgeons were invited as expert counsels in medico-legal actions. Medico-legal aspects have a minimal impact on the MIS activity of paediatric surgeons. In this series, claims concluded with the absolution of the surgeon in all cases, but they had a negative effect on the surgeon’s reputation and finances. A key element in supporting surgeons while they are under investigation is always to choose a surgeon who is an expert in paediatric MIS as legal counsel. A constant update on innovations in paediatric MIS and appropriate professional liability insurance may also play a key role in reducing medico-legal consequences.


2016 ◽  
Vol 62 (2) ◽  
pp. 507-518 ◽  
Author(s):  
Michelle L. McCrackin ◽  
Holly P. Jones ◽  
Peter C. Jones ◽  
David Moreno-Mateos

2020 ◽  
Vol 145 (2) ◽  
Author(s):  
Loïc N. Michel ◽  
Patrick Dauby ◽  
Alessandra Dupont ◽  
Sylvie Gobert

Mediterranean Posidonia oceanica meadows shelter an important biomass and biodiversity of amphipod crustaceans that graze on epiphytes. However, their actual significance for ecosystem functional processes is hard to estimate, due to the lack of adequate data. Here, a field microcosm-based inclusion experiment was used to test if three of the dominant taxa of the amphipod community (Apherusa chiereghinii, Dexamine spiniventris and Gammarus spp.) could exert top-down control on seagrass leaf epiphytes. Influence of amphipod activity on nutrient availability for the host species was also investigated. All grazer taxa significantly reduced biomasses of erect macroalgae and erect sessile animals present on leaves. None of them consumed encrusting epiflora or epifauna. This selective top-down control could have important implications for the structure of the epiphytic community on leaves of P. oceanica, which is one of the most diverse and abundant of all seagrass species. Grazing activity of all taxa caused higher N content of seagrass leaves, likely through amphipod excretion and/or sloppy feeding. Since P. oceanica meadows often grow in oligotrophic zones where plant growth can be nutrient-limited, this N enrichment could enhance seagrass production. Overall, the ecological interaction between P. oceanica and amphipods could be seen as a facultative mutualistic relationship. Our results suggest that amphipod mesograzers are key-elements in some of the functional processes regulating these complex and yet endangered ecosystems, which are essential components of Mediterranean coastal zones.


2013 ◽  
Vol 15 (1) ◽  
pp. 189 ◽  
Author(s):  
M. VACCHI ◽  
M. MONTEFALCONE ◽  
V. PARRAVICINI ◽  
A. ROVERE ◽  
P. VASSALLO ◽  
...  

Spatial modelling is an emerging approach to the management of coastal marine habitats, as it helps understanding and predicting the results of global change. This paper reviews critically two recent examples developed in Liguria, an administrative region of NW Italy. The first example, aiming at predicting habitat status depending on pressures, provides managers with the opportunity of envisaging different scenarios for the consequences of coastal development choices. The second example defines the status of an important Mediterranean coastal marine habitat (Posidonia oceanica meadows) under natural conditions, allowing for quantifying human impacts on regressed meadows. Both modelling approaches are useful to define the targets of coastal management, and may help choosing the best management option. Well-planned and sustained monitoring is essential to model validation and improvement.


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