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Competition of other plants, as is the case of Caulerpa racemosa (Forsskal) and Caulerpa taxifolia (Vahl). The lesser Neptune seagrass Cymodocea nodosa is also commonly encountered, but compact Cymodocea meadows are mostly restricted in enclosed gulfs and lagoons (i.e., Thermaikos Gulf, Elefsis Bay, eastern Kavala Gulf, Nestos lagoons, Messolonghi lagoons). The use of maize straw, instead of cotton waste, as a bulking agent led to the following effects on the composting process of the OMWW sludges: (1) a lower mineralization of the organic matter at the end of the active phase of the process; (2) lower total-nitrogen losses by NH3-volatilization; (3) a higher biological nitrogen fixation, and (4) production of a stabilized organic matter with less humic characteristics. The Neptune seagrass Posidonia oceanica is a widespread marine angiosperm forming extensive meadows across the Hellenic Seas (Fig. (1997) studied also the composting of an OMWW-wheat straw mixture. The fruit is free floating and known in Italy as "the olive of the sea" (l'oliva di mare[2]). In terms of the naturalness of the study area, Posidonia meadows represent the climax of the shelf biocoenosis; therefore, their presence indicates pristine environmental conditions [2,3]. 8.7. Determine the time interval in between flowering events, as the number of rhizome segments in between the flower scars. Posidonia oceanica (L.) Delile and Cymodocea nodosa (Ucria) Asch. et al., 1997). Alan McIntosh, Jennifer Pontius, in Science and the Global Environment, 2017. Fig. Map of the seas surrounding Italy: bathymetry represented by blue tones, emerged areas by shaded relief. International Shipping Exhibition is a biennial Trade Show. Flower marks are identified as the scar (roughly circular in shape) left by the flower peduncle, located in one side of the stem, generally in areas of locally increased stem thickness. Locations were characterized by a different ecological condition: degraded Posidonia meadows; meadows in good conditions; meadows close to the best reference conditions. Posidonia meadows are present throughout a large part of the Mediterranean but in some areas they have almost disappeared, especially along the middle and northern Adriatic, whereas they thrive in the southern Adriatic. Posidonia oceanica, commonly known as Seagrass, is an angiosperm plant, adapted to underwater life.It is a key element to preserve the Mediterranean ecosystems. The posidonia cDNA library was screened with a CA4H [32P]cDNA from H. tuberosus corresponding to its coding sequence under low stringency conditions (hybridisation at 55°C in 5xSSC, washing at 45°C in 0.2xSSC). Frederick T. Short, Carlos M. Duarte, in Global Seagrass Research Methods, 2001. Although the extent of anti-trawling reef use and the results achieved in the Mediterranean Sea, recently there has been a growing debate on the cost-effectiveness of these structures to avoid trawling in sensitive areas. The dead leaves that accumulate on the coast further prevent coastal erosion. Fig. Many observations of flowering are anecdotal, and the literature often does not contain the detailed sequence of flowering (Table 3-8). Six years after the installation of the Tabarca AR, the P. oceanica meadow had recovered significantly, with an increase of the mean shoot density to 60 shoots m−2. Such understanding is necessary to ensure that any proposal of mitigation will prove effective.”. Posidonia australis is a species of seagrass that occurs in the southern waters of Australia. Posidonia meadows are included among the SCI defined by the European Community “Habitat” Directive (92/43/EEC), which refers to natural habitats, because they contribute significantly to the preservation of biodiversity. Are you optimistic that you could complete your task? More recently, seedlings have been observed too. Balls of fibrous material from its foliage, known as egagropili, wash up to nearby shorelines. How would you address it? Phenols are assumed to be responsible for phytotoxicity and their bioconversion is very important for humic acid biosynthesis. While the impact of climate change on coastal ecology is linked, of course, to increased temperatures, it may also be accompanied by rising sea levels, increased salinity, increased numbers of warm-water invasive species and increased coastal erosion, to name a few. Two different piles prepared with OMWW sludge and either maize straw or cotton waste as bulking agents were composted by the Rutgers static pile system in a pilot plant, with the aim of ascertaining the most suitable conditions for degrading the OMWW sludges through composting. Posidonia oceanica seagrass meadow from Santorini Island. How can you justify nonprofit and governmental organizations focusing their efforts to restore the Mediterranean in light of the worldwide need? Since the late 1970s, there has been a growing concern regarding the protection of inshore nursery grounds, such as seagrass beds (Posidonia and Cymodocea) and calcareous benthic algae. The air-conditioned accommodations is 3.7 mi from Via Garibaldi, and guests benefit from complimentary WiFi and private parking available on site. For a range of reproductive parameters including, among others, cocoon production and hatching success, all substrates were satisfactory with the 2POMW:CM 8:1, 2POMW:CM 2:1, and 2POMW:CM:BS being the most favorable for reproduction. Della Monica M. et al. An addition of 0.5% in sulfur (dry weight basis) and a moisture content of 40% were proposed as the optimum conditions to decrease the compost pH by 1.1 units without increasing the electrical conductivity to levels that could reduce the agricultural value of the compost. (2005) reported a number of results, which demonstrate the capacity of a damaged P. oceanica meadow to recover after the deployment of anti-trawling reefs off the Spanish Mediterranean coast. The characteristics of 2POMW are an obstacle for its correct aeration as a composting substrate, because such a process must be carried out in favorable conditions (appropriate moisture, nutrient balance, structure, and air distribution) to obtain a useful product (Alburquerque J.A. Posidonia is a Brazilian shipping company focused on coastal and international shipping and offshore operations, and ship management. A seasonal thermocline is present at a depth between 15 and 40 m, caused by the summer heating of surface waters. You’re given an annual budget of $100 million euros. These essential ecosystem services, and the widespread distribution of the meadows, are the reason for considering Posidonia oceanica to be the most important species of the whole basin. The treatment of OMWW and sludge is completed on parcels of land underlain with a waterproof base. The composting was carried out in a climatic chamber in PVC containers having a capacity of 5 l. Samples were periodically taken which were characterized and analyzed. Alternatives include extraction of DNA from fresh samples (usually less than 1-2 days after harvesting), or freezing the fresh sample in liquid nitrogen or at –80°C. Consider how likely nations would be to adopt each of these steps, along with the potential impact of the actions. A bioassay indicated that the final products were not phytotoxic. On the other hand, analysis of commercial landings data suggested an increase in the catch of some importance fish species since the deployment of the Campello anti-trawling reef. Posidonia meadows (concepts: F. Boero; art: Alberto Gennari). By continuing you agree to the use of cookies. Once completely dry the samples are stable at room temperature for months to years, provided they are kept dry with fresh drying agent regularly. The phytotoxic effects in the pile with maize straw lasted for a longer time, probably due to its slower rate of organic matter mineralization. Copyright © 2020 Elsevier B.V. or its licensors or contributors. A plant with unique properties that makes it possible to harvest an exceptional salt with exceptional virtues. Flowers of P. australis are held above the canopy whereas those of P. sinuosa are below the canopy (Cambridge and Kuo 1979). The development of enzymatic activities was positive and no pathogen was found. The procedure applied comprises the collection and transfer of the sea grass to the treatment unit and then mixing with various organic wastes such as OMWW (Posidonia oceanica 67%, goat manure 20%, and OMWW 13%) and olive cake (Posidonia oceanica 67%, olive cake 23%, grape pomace 6%, olive leaves 1.5%, and sheep manure 2.5%), so that the C/N ratio is approximately 30:1 in the product of mixing.

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