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Статті в журналах з теми "Mediterranean coastal lagoons"
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Giampaoletti, Jacopo, Alice Sbrana, Paolo Magni, and Maria Gravina. "Macrobenthos of the Tortolì Lagoon: A Peculiar Case of High Benthic Biodiversity among Mediterranean Lagoons." Diversity 15, no. 6 (June 16, 2023): 783. http://dx.doi.org/10.3390/d15060783.
Повний текст джерелаАнотація:
Coastal lagoons and brackish ponds are extremely dynamic and temporary ecosystems that follow natural changes throughout their geological history. The correct management of the lagoons ensures their integrity and proper functioning. For this reason, their ecological status should be surveyed for assessing the most appropriate strategies of use. In the present study, historical datasets collected in 2003–2004 are used to investigate the spatiotemporal variation in the species composition and community structure of the macrobenthos of the Tortolì Lagoon (Sardinia, Italy) and to assess their relationship with key environmental variables. Owing to the presence of a riverine runoff at a site and confined areas at some distance from the sea inlet, we hypothesize the marked spatiotemporal changes of the macrobenthic community consistent with the high environmental variability typical of coastal lagoons. The results show a surprisingly high benthic biodiversity for a medium-sized lagoon (250 ha), with 101 species unevenly distributed across the lagoon. The environmental variables did not explain the zonation of the macrobenthic community as that typically found along a lagoonal gradient, due to a marked marine influence. The sampling sites were in fact discriminated by the species distribution according to their ecological affinity; in particular, the most distinctive characteristics of the Tortolì Lagoon emerged from the strictly marine species that represented the most abundant group, consistently with the high marinization of the lagoon. Our results show that the Tortolì Lagoon constitutes a peculiar ecosystem within Mediterranean lagoons, departing from the classic confinement theory.
2
Lucena-Moya, Paloma, and Isabel Pardo. "An invertebrate multimetric index to classify the ecological status of small coastal lagoons in the Mediterranean ecoregion (MIBIIN)." Marine and Freshwater Research 63, no. 9 (2012): 801. http://dx.doi.org/10.1071/mf12104.
Повний текст джерелаАнотація:
Despite the requirements of the European Water Framework Directive (WFD) to protect water bodies, suitable indices of quality designed specifically to assess coastal lagoons (transitional waters) remain absent. In the present study, we developed a multimetric index of the Balearic Island based on invertebrate communities (MIBIIN) to assess the ecological status of small coastal lagoons (i.e. up to 4-m depth and <2.5 km2), a common ecosystem within the Mediterranean ecoregion. Thirty-four coastal lagoons were sampled on six occasions between 2005 and 2008. A multimetric index for each salinity type of coastal lagoon (oligohaline-MIBIIN, mesohaline-MIBIIN and euhaline-MIBIIN) was developed. The individual metrics, and hence the MIBIINs, fulfilled the normative definitions established by the WFD (abundance, diversity and sensitive : tolerance ratio), responded to gradients of disturbance and discriminated reference from non-reference sites. Common boundary limits for the three MIBIINs were established (high/good = 0.930, good/moderate = 0.730, moderate/poor = 0.500, poor/bad = 0.250). Unlike other metrics used in coastal lagoon evaluation, the MIBIINs were developed exclusively for coastal lagoons, including oligohaline freshwater environments. Although the MIBIIN is yet to be validated with an external dataset, these findings suggest the potential for this new multimetric index to be used in similar systems in the Mediterranean ecoregion.
3
Leone, Chiara, Francesca De Luca, Eleonora Ciccotti, Arianna Martini, and Clara Boglione. "Monitoring Skeletal Anomalies in Big-Scale Sand Smelt, Atherina boyeri, as a Potential Complementary Tool for Early Detection of Effects of Anthropic Pressure in Coastal Lagoons." Water 13, no. 2 (January 12, 2021): 159. http://dx.doi.org/10.3390/w13020159.
Повний текст джерелаАнотація:
Mediterranean coastal lagoons are increasingly affected by several threats, all concurrently leading to habitat degradation and loss. Methods based on fish for the assessment of the ecological status are under implementation for the Water Framework Directive requirements, to assess the overall quality of coastal lagoons. Complementary tools based on the use of single fish species as biological indicators could be useful as early detection methods of anthropogenic impacts. The analysis of skeletal anomalies in the big-scale sand smelt, Atherina boyeri, from nine Mediterranean coastal lagoons in Italy was carried out. Along with the morphological examination of fish, the environmental status of the nine lagoons was evaluated using a method based on expert judgement, by selecting and quantifying several environmental descriptors of direct and indirect human pressures acting on lagoon ecosystems. The average individual anomaly load and the frequency of individuals with severe anomalies allow to discriminate big-scale sand smelt samples on the basis of the site and of its quality status. Furthermore, a relationship between skeletal anomalies and the environmental quality of specific lagoons, driven by the anthropogenic pressures acting on them, was found. These findings support the potentiality of skeletal anomalies monitoring in big-scale sand smelt as a tool for early detection of anthropogenic impacts in coastal lagoons of the Mediterranean region.
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De Wit, Rutger, and Nathalie Boutin. "European LIFE Projects Dedicated to Ecological Restoration in Mediterranean and Black Sea Coastal Lagoons." Environments 10, no. 6 (June 13, 2023): 101. http://dx.doi.org/10.3390/environments10060101.
Повний текст джерелаАнотація:
This paper discusses how ecological restoration has been pursued through projects financed by L’Instrument Financier pour l’Environnement (LIFE) of the European Commission in Mediterranean and Black Sea coastal lagoon sites affiliated with the Natura 2000 network. While the LIFE programme started in 1992, the first project focusing on ecological restoration in a coastal lagoon setting in this eco-region was attributed in 1995. In total, 50% (27) of the 54 LIFE projects in the Mediterranean and Black Sea coastal lagoons comprised a worksite on ecological restoration. Eighteen finalized projects, all realized after 2008, have been sufficiently documented for our analysis. The ecological restoration works included (i) removing solid waste and alien invasive species, (ii) re-building lagoons, (iii) creating islets for bird colonies, (iv) restoring the hydrodynamics of the lagoons, and (v) restoring and protecting vegetation. The latter includes submerged aquatic vegetation in the lagoons, halophytes on tidal flats and in fringing salt marshes, freshwater marsh plants, and dune vegetation. Abandoned salt works (Salinas), originally created within the coastal lagoons or on their shoreline, represent significant areas that can be managed for conservation or restoration. Coastal lagoons are transitional waters, and successful restoration of water quality and aquatic communities must include the concept of the aquatic continuum. Combating eutrophication requires managing the watersheds of the lagoons to drastically decrease nutrient loadings. Unfortunately, these issues have only been marginally addressed by the LIFE projects, as they were too often limited by the perimeter of the Natura 2000 sites. In principle, the Water Framework Directive takes care of these issues and, according to an integrative vision, links them with the protected Natura 2000 sites. In practice, however, the LIFE projects and the water policies in the member states still suffer from sectorial approaches.
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Doulgeraki, S., N. Lampadariou, and A. Sinis. "Meiofaunal community structure in three Mediterranean coastal lagoons (North Aegean Sea)." Journal of the Marine Biological Association of the United Kingdom 86, no. 2 (March 13, 2006): 209–20. http://dx.doi.org/10.1017/s0025315406013051.
Повний текст джерелаАнотація:
The higher taxonomic structure of the meiofaunal community was investigated in three eastern Mediterranean lagoons, an open (Vassova), a semi-closed (Piges) and a closed lagoon (Alykes Kitrous). In total, 22 stations representing characteristic features in each lagoon were sampled. Stations were found to support a maximum of 19 meiofaunal taxa with densities ranging from 1 to 10,000 individuals per 10 cm2. Nematodes were dominant at all sites (30–97%) except at the hypersaline sites, where ciliates outnumbered all metazoan meiofaunal taxa (53–77%). Uni- and multivariate analyses were applied to study the community structure. The number of taxa and the meiofaunal density showed strong spatial differences in all three lagoons; however, the main source of variation occurred between the semi-closed and closed lagoons. Both the meiofaunal composition and density were significantly less at the hypersaline sites which had salinity above 100 psu. The meiofaunal distribution pattern was shown to be controlled by abiotic factors, in particular vertical stratification of salinity, bottom water currents and oxygen availability at the bottom water–sediment interface. However, the distribution of feeding resources (e.g. cyanobacteria, phytodetritus) was also found to play a key role in structuring meiofaunal communities.
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Sousa, Arturo, Pablo García-Murillo, Julia Morales, and Leoncio García-Barrón. "Anthropogenic and natural effects on the coastal lagoons in the southwest of Spain (Doñana National Park)." ICES Journal of Marine Science 66, no. 7 (April 23, 2009): 1508–14. http://dx.doi.org/10.1093/icesjms/fsp106.
Повний текст джерелаАнотація:
Abstract Sousa, A., García-Murillo, P., Morales, J., and García-Barrón, L. 2009. Anthropogenic and natural effects on the coastal lagoons in the southwest of Spain (Doñana National Park). – ICES Journal of Marine Science, 66: 1508–1514. The Doñana peridunal lagoons, located in the southwest of Spain, have been well studied, because their conservation is of great interest. Since 1965, they have also been affected by the extraction of underground water for local coastal tourist resorts. A reconstruction of the evolution of this series of coastal lagoons reveals that, along with the anthropogenic effect, there was a natural effect resulting from the reactivation of mobile dune fronts that have blocked and filled the original lagoon complex—in the period 1920–1987, the lagoons were reduced by 70.7%. These fronts might have been fed by deposits of marine sand during the climatically driest phases of the Little Ice Age in Andalusia, Spain. Therefore, if the frequency and duration of dry periods increase, as well as droughts as a whole, because of global warming, the desiccation and disappearance of the lagoons could become more widespread, not only at this site in southwestern Europe, but in other Mediterranean coastal ecosystems as well.
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Zoidou, Maria, Nikolaos Kokkos, and Georgios Sylaios. "Dynamics of Water, Salt, and Nutrients Exchange at the Inlets of Three Coastal Lagoons." Journal of Marine Science and Engineering 10, no. 2 (February 2, 2022): 205. http://dx.doi.org/10.3390/jmse10020205.
Повний текст джерелаАнотація:
The intertidal patterns at the inlet of three coastal lagoons (Agiasma, Porto Lagos, and Xirolimni) in Northern Greece were investigated by combining in situ samplings and computational efforts. These lagoons are Mediterranean, microtidal coastal systems, connected with the adjacent open sea (Thracian Sea) through their inlet canals and are highly affected by the lagoon–sea exchange processes. Limited freshwater enters their basins, mostly due to precipitation and agricultural drainage. An intense monitoring program of water flow and quality at the mouth of the three lagoons was carried out, aiming to quantify the transport mechanisms of water, salt, and nutrients across the inlet canal under different tidal/meteorological conditions. Ebb currents were recorded higher than flood currents, and the temporal variability of the longitudinal velocity was characterized by asymmetries. Residual currents were important to the water exchange, with the Eulerian water, salt, and nutrient fluxes being an order of magnitude larger than the Stokes drift. Eulerian transport and tidal pumping are considered as important mechanisms for salt and nutrients exchange through the inlets. The return flow factor varied from 1 to 17.5% of the water exiting the lagoons in ebb, while the residence time ranged from 0.7 days to 4.2 days.
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Mayo-Hernández, E., J. Peñalver, A. García-Ayala, E. Serrano, P. Muñoz, and R. Ruiz de Ybáñez. "Richness and diversity of helminth species in eels from a hypersaline coastal lagoon, Mar Menor, south-east Spain." Journal of Helminthology 89, no. 3 (March 31, 2014): 345–51. http://dx.doi.org/10.1017/s0022149x14000145.
Повний текст джерелаАнотація:
AbstractThe composition and diversity of parasite communities and intestinal components, as well as infra-community structure, were assessed in eels Anguilla anguilla, from Mar Menor, a permanent Mediterranean hypersaline coastal lagoon. Data were used to determine whether this helminth community differs in composition and structure from that of eels in lagoons with lower salinity regimes and higher freshwater inputs. A total prevalence of 93% was detected. Specifically, parasites were identified as Deropristis inflata, Bucephalus anguillae, Contracaecum sp., Anguillicoloides crassus and two plerocercoid larvae belonging to the order Proteocephalidae, the marine species representing 91% of the isolated helminths. In the total community, digenetic trematodes were the dominant group of helminths, and D. inflata, an eel specialist, dominated both the component community and the infra-community. Richness and diversity were low but similar to those reported in other saline lagoons, and maximum species per eel did not exceed four. At the infra-community level, higher abundance than in other brackish or marine Mediterranean environments was detected. The findings provide further evidence of the similarity in composition and structure of helminth communities in eels from various Mediterranean coastal lagoons. Moreover, salinity-dependent specificities are well supported and reflect the life history of individual eels.
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Soria, Juan, Rebeca Pérez, and Xavier Sòria-Pepinyà. "Mediterranean Coastal Lagoons Review: Sites to Visit before Disappearance." Journal of Marine Science and Engineering 10, no. 3 (March 1, 2022): 347. http://dx.doi.org/10.3390/jmse10030347.
Повний текст джерелаАнотація:
Coastal lagoons are an established priority habitat in the European environment because of the biological communities that inhabit them. Their origin is related to the transport of sediments from a nearby river or the movement of sands by the marine currents that produce the closure of a gulf. Therefore, they are recent geological formations, which also disappear quickly if environmental conditions change. The 37 coastal lagoons with a surface area greater than 10 km2 located in the Mediterranean basin have been identified. Fishing has been the traditional use of these lagoons, in addition to their use as a navigation harbor when they are open to the sea. Pollution, quality problems and their consequences are the most studied topics in recent publications. Sentinel-2 images taken in the summer of 2020 have been used to study water transparency, suspended matter and chlorophyll a concentration. The result was that only six of them are in good ecological condition, but most of them are eutrophic due to the impacts on their environment and the inflow of poor quality water. The cultural values of these lagoons must also be protected and preserved.
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Specchia, Valeria, Benedetta Saccomanno, Francesco Zangaro, Eftychia Tzafesta, and Maurizio Pinna. "Exploring the Biodiversity of a European NATURA 2000 Mediterranean Lagoon through eDNA Metabarcoding." Diversity 14, no. 11 (November 17, 2022): 991. http://dx.doi.org/10.3390/d14110991.
Повний текст джерелаАнотація:
Coastal lagoons are considered important habitats both for ecological functions and biodiversity worldwide. Thus, they provide relevant ecosystem services and valuable natural resources. However, coastal lagoons are highly susceptible to anthropogenic pressures that can cause biodiversity losses and require specific biomonitoring programs as well as management measures. In this research, we applied environmental DNA (eDNA) metabarcoding to investigate the biodiversity of a poorly known Mediterranean lagoon included in the European Natura 2000 Network. We used the cytochrome oxidase I (COI) gene marker to capture the entire biodiversity of this highly diversified aquatic coastal environment. With a low sampling effort and rapid laboratory practices, a large amount of valuable biodiversity data was generated and analyzed. Interestingly, this straightforward and broad molecular surveying of biodiversity unveiled a wide variety of taxonomic groups, such as benthic macroinvertebrates, zooplankton, phytoplankton, and macroalgae, which are frequently used as ecological indicators. We were able to detect species that were previously morphologically identified, as well as species never identified before. This research underlines the validity of eDNA metabarcoding in assessing the biodiversity in a poorly known and protected Mediterranean lagoon ecosystem, as well as in identifying the early warnings of environmental stressors. Finally, the research highlights the need to investigate multiple target genes and primers set for a larger analysis of specific species.
Дисертації з теми "Mediterranean coastal lagoons"
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Andrisoa, Aladin Danoary. "Ecological impacts of groundwater discharge to Mediterranean coastal lagoons." Thesis, Aix-Marseille, 2019. http://theses.univ-amu.fr.lama.univ-amu.fr/190326_ANDRISOA_564o889xp122jxhof868gdfl_TH.pdf.
Повний текст джерелаАнотація:
Bien que l’importance des eaux souterraines et des eaux porales (recirculation) en tant que voie d’apports de nutriments vers les systèmes côtiers soit de plus en plus reconnue, il y a encore peu d’information sur leur réel rôle écologique. Cette thèse vise à évaluer l’impact des flux d’eaux souterraines et du processus de recirculation au sein du sédiment sur le fonctionnement des écosystèmes lagunaires côtiers et sur leur vulnérabilité face aux impacts anthropiques et climatiques. Deux lagunes contrastées de la côte méditerranéenne française ont été étudiées (Etangs de La Palme et Salses-Leucate). Nos résultats montrent que la recirculation est la principale source d'azote inorganique dissous (DIN) et de phosphore inorganique dissous (DIP) dans la lagune de La Palme. Les signatures isotopiques d'azote (δ15N) chez les macrophytes et le phytoplancton reflètent principalement celles des formes inorganiques dissoutes des eaux souterraines et des eaux porales dans les lagunes de La Palme et de Salses-Leucate, démontrant ainsi le rôle significatif de ces sources dans le soutien de la production primaire. Les signatures isotopiques du carbone (δ13C) indiquent que les eaux souterraines sont également des sources importantes de carbone inorganique dissous pour les producteurs primaires. Cette étude montre aussi que les moules des sites influencés par les eaux souterraines ont un taux de croissance et un indice de condition (poids des tissus / poids de la coquille) plus élevés que ceux du site témoin hors influence des eaux souterraines probablement dues aux températures hivernales plus élevées et à l'apport permanent d'éléments nutritifs provenant des eaux souterrainesWhilst the role of groundwater discharge and porewater fluxes (recirculation) as important pathways for nutrient delivery to coastal systems is increasingly being recognized, there remains limited evidence of its “downstream” ecological implications. This thesis aims at investigating the ecological role that groundwater flows play in some aspects of the functioning and vulnerability of coastal lagoonal ecosystems. Two contrasting lagoons on the french mediterranean coastline were studied (La Palme and Salses-Leucate lagoons). Our results show that the recirculation of lagoon water through the lagoon sediments is the main source of both dissolved inorganic nitrogen (DIN) and phosphorous (DIP) to La Palme lagoon. The nitrogen isotopic signatures (δ15N) in primary producers reflect predominantly the nitrogen isotopic signatures of the terrestrial (karstic) groundwater and porewater source in both La Palme and Salses-Leucate lagoons, demonstrating the important role of these sources in supporting primary production. The carbon isotope signatures (δ13C) indicate groundwater discharge as a significant source also of dissolved inorganic carbon to primary producers. Further more, the variations in growth rate and condition index (tissue weight / shell weight) of the Mediterranean mussels growing in and outside groundwater-influence in Salses-Leucate lagoon were examined. Mussels from the groundwater-influenced sites have higher growth rate and condition index compared to those from the control site, likely as consequence of both the higher winter temperatures and the groundwater-driven nutrient supply that increase the food availability to support mussel growth
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Badosa, i. Salvador Anna. "Limnological characteristics and zooplankton community structure of Mediterranean coastal lagoons undergoing restoration." Doctoral thesis, Universitat de Girona, 2007. http://hdl.handle.net/10803/7869.
Повний текст джерелаАнотація:
Entre 1999 i 2003 es va desenvolupar un projecte Life de restauració a la maresma de La Pletera, afectada per un pla urbanització, i a la llacuna del Ter Vell, amb un elevat grau d'eutròfia (aiguamolls del Baix Ter, NE Península Ibèrica). L'objectiu d'aquesta tesi és establir el funcionament d'ambdós ecosistemes, analitzar-ne la problemàtica ambiental i avaluar els efectes de la restauració. A la maresma de la Pletera, es va analitzar el paper de la hidrologia en la composició i dinàmica dels nutrients i del zooplàncton en cinc llacunes, tres de les quals havien estat creades dins el projecte de restauració com a nous refugis per una espècie de peix amenaçada (Aphanius iberus). La hidrologia es va caracteritzar per un llarg període de confinament sense entrades d'aigua, interromput de manera irregular per inundacions puntuals. La dinàmica del nitrogen inorgànic es va relacionar amb les entrades d'aigua, mentre que la del fòsfor, del nitrogen total i de la matèria orgànica es va relacionar amb els processos d'acumulació i reciclatge intern durant el confinament. El zooplàncton es va analitzar mitjançant la combinació d'aproximacions taxonòmiques i de mides. L'estructura de mides de la comunitat es va veure més afectada per les interaccions tròfiques (depredació i competència) mentre que l'estructura taxonòmica va ser més sensible a factors abiòtics (nutrients). El ràpid creixement de la població A. iberus en les noves llacunes va suggerir que aquestes havien proporcionat l'hàbitat adequat per a l'espècie, almenys a curt termini.
Les actuacions de restauració a la llacuna del Ter Vell es van centrar en la millora de la qualitat de l'aigua mitjançant (1) la construcció d'uns aiguamolls per depurar l'aigua d'entrada i (2) el dragat del sediment en diversos punts. Simultàniament a la restauració, però de forma independent, la gestió agrícola de l'aigua va reduir dràsticament el cabal d'entrada d'aigua dolça a la llacuna, provocant un canvi en el règim hídric. Es van analitzar els efectes a curt termini d'aquest canvi sobre la limnologia i el zooplàncton de la llacuna. Abans del canvi, la hidrologia era artificial ja que s'havia prolongat l'entrada d'aigua dolça d'acord amb la demanda agrícola, i per tant la llacuna presentava una elevada taxa de renovació de l'aigua i majors concentracions de nutrients. Després del canvi, la hidrologia va dependre més del clima, es van reduir les entrades d'aigua i es va allargar el període de confinament. La composició y dinàmica dels nutrients va tendir a assemblar-se a l'observada a les llacunes de la maresma, mentre que la comunitat del zooplàncton no ho va fer. L'estat ecològic de la llacuna va millorar després del canvi en el règim hídric.
Between 1999 and 2003, a restoration Life project was developed in La Pletera salt marshes, affected by an urbanisation plan, and in the Ter Vell lagoon, a highly eutrophic lagoon (Baix Ter Wetlands, NE Iberian Peninsula). The aim of this thesis is to establish the natural functioning of both ecosystems, analyze their environmental problematic and also to evaluate the effects of the restoration measures.
In La Pletera salt marshes, the role of the hydrological regime in the nutrient and zooplankton composition and dynamics was analysed in five brackish lagoons. Three of them were created in the framework of the restoration project as new refuges for an endangered fish species (A. iberus). The hydrology was determined by a prolonged period of confinement without water inputs, irregularly interrupted by sudden flooding events. While the dynamics of inorganic nitrogen depended on the water inputs variability, dynamics of phosphorus, total nitrogen and organic matter was related more to the cumulative mechanisms and internal recycling during the confinement periods. The zooplankton community structure was analysed by means of the combination of taxon- and size-based approaches. Whereas the community size structure was more affected by trophic interactions (predation and competition), the taxonomic structure appeared to be more sensitive to abiotic factors (nutrients). The fast growth of the size population of A. iberus in the new lagoons suggested that they had provided a suitable refuge for this species, at least in the short-term.
Restoration actions in the Ter Vell lagoon were focused on the improvement of the water quality by means of (1) wetlands construction to reduce nutrient inputs and (2) sediment dredging. Simultaneously, but independent of the restoration activities, water management in agriculture drastically reduced the freshwater inflow to the lagoon and, therefore, changed the hydrological regime. The short-term effects of this hydrological change on the limnological characteristics and the zooplankton of the lagoon were analysed. Before the change, the hydrology was artificial since the freshwater flooding period was prolonged due to the high agricultural demand. As a result, the lagoon showed a high water turnover rate and high nutrient concentrations. After the change, hydrology was climate-dependent, with scarce water inputs and prolonged confinement periods. Then, the nutrient composition and dynamics tended to be more similar to those observed in the salt marsh lagoons. However, zooplankton did not tend to resemble to that of the salt marsh lagoons. The ecological status of the Ter Vell lagoon was improved after the hydrological change.
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MANZO, CRISTINA. "Fish assemblages in three Mediterranean coastal lagoons: structure, functioning and spatial-temporal dynamics." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2010. http://hdl.handle.net/2108/1274.
Повний текст джерелаАнотація:
Questa ricerca, condotta nei Laboratori di Ecologia Sperimentale dell’Università di Tor Vergata, ha avuto come scopo quello di contribuire alla conoscenza della struttura e delle dinamiche degli assemblage ittici di tre lagune dell’Italia centro-meridionale, la laguna di Lesina (Puglia) e i laghi costieri di Fogliano e Caprolace (Lazio).
In ognuno degli ambienti lagunari, per un anno, sono stati compiuti campionamenti mensili della fauna ittica, utilizzando una trattina manuale con maglia di 2 mm. Le stazioni di campionamento sono state scelte tenendo conto principalmente della distanza dai canali di marea, della distanza dagli input d’acqua dolce, dei valori di salinità e della copertura vegetale.
Contemporaneamente sono stati anche misurati i principali parametri idrologici (temperatura, salinità, concentrazione dell’ossigeno disciolto, pH, ecc.) e sono stati prelevati dei campioni di acqua per l’analisi dei nutrienti. In laboratorio, i campioni sono stati smistati, e gli individui identificati a livello specifico e contati.
Le dinamiche spaziali e temporali degli assemblage ittici delle tre lagune sono state analizzate utilizzando diverse tecniche di analisi statistica multivariata.
I risultati hanno evidenziato come sia il grado di influenza marina che il grado di complessità ambientale abbiano giocato un ruolo primario nello strutturare gli assemblage ittici delle tre lagune indagate. In particolare, le caratteristiche morfometriche dei canali di marea sembrano influenzare sensibilmente sia la ricchezza specifica sia la struttura degli assemblage ittici, proponendosi come buoni descrittori abiotici della tipologia delle lagune costiere del Mediterraneo, da cui derivare le condizioni biologiche di riferimento nell’ottica dell’applicazione della Direttiva Europea sulle Acque (2000/60/CE).The fish assemblage structure and its spatial and temporal variations in Lesina Lagoon and in the coastal lakes of Fogliano and Caprolace, respectively located on the Adriatic and Tyrrhenian coasts of the Central-Southern Italy, were investigated for about a year. The stations chosen in each lagoon on the basis of their environmental characteristics were sampled once a month with a manual beach seine. Both taxonomical and functional aspects of the fish assemblage were analysed, and the patterns of fish spatial and temporal distributions in each lagoon were studied using multivariate statistical methods. Results evidence that the marine influence extent together to the environmental complexity plays a primary role in structuring the fish assemblages of these small lagoons. The implications for the management of the three lagoons and in the identification of key abiotic descriptors of Mediterranean coastal lagoons typology, such that reliable specific biological reference conditions can be derived were discussed.
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Bas, Silvestre Maria. "Ecosystem functioning of Mediterranean confined coastal lagoons: ecosystem metabolism, main drivers and phytoplankton community." Doctoral thesis, Universitat de Girona, 2021. http://hdl.handle.net/10803/673080.
Повний текст джерелаАнотація:
Confined coastal lagoons are shallow and dynamic water bodies that play an important ecological role. Considering the severe degradation they have been facing in the last years, understanding the functioning of these habitats for their proper management and conservation is essential. Nowadays, one of the most important descriptors of ecosystem functioning is the metabolism, the use of which has increased with the application of the free dissolved oxygen (DO) technique and the development of more affordable and reliable sensors. Quantifying metabolic rates as well as identifying the factors that contribute to their temporal and spatial variation are very important in assessing these ecosystems behaviour and their response to future changes. Thus, the aim of the thesis was to estimate the ecosystem metabolism of a set of Mediterranean confined coastal lagoons in La Pletera salt marsh identifying the main drivers of its variation and its application to study phytoplanktonLes llacunes costaneres mediterrànies de tipus confinat són cossos d’aigua poc profunds i dinàmics, amb un paper ecològic molt important. Davant la regressió que han patit durant els darrers anys, entendre el funcionament d’aquests habitats per una correcta gestió i conservació esdevé fonamental. Avui dia, un dels descriptors més importants del funcionament ecosistèmic és el metabolisme, l’ús del qual s’ha incrementat amb l’aplicació de la tècnica de l’oxigen lliure i el desenvolupament de sensors cada cop més assequibles i fiables. La quantificació de les taxes metabòliques i la identificació dels factors que contribueixen a la seua variació temporal i espacial són molt importants per avaluar el comportament dels ecosistemes i la seua resposta a futurs canvis. Així, l’objectiu d’aquesta tesi va ser estimar el metabolisme ecosistèmic d’un conjunt de llacunes costaneres mediterrànies confinades a la maresma de la Pletera, identificar els seus principals factors de variació i la seua aplicació per estudiar el fitoplàncton
Programa de Doctorat en Ciència i Tecnologia de l'Aigua
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Brunelli, Federico <1975>. "Evaluation of Silver European EEL (anguilla anguilla) for the implementation of an Effective EEL Management plan in Mediterranean Coastal Lagoons." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4788/1/Brunelli_Federico_tesi.pdf.
Повний текст джерелаАнотація:
This thesis presents SEELF (Sustainable EEL fishery) Index, a methodology for evaluation of European eel (Anguilla anguilla) for the implementation of an effective Eel Management Plan, as defined by EU Regulation No.1100/2007.
SEELF uses internal and external indices, age and blood parameters, and selects suitable specimen for restocking; it is also a reliable tool for eel stock management.
In fact, SEELF Index, was developed in two versions: SEELF A, to be used in field operations (catch&release, eel status monitoring) and SEELF B to be used for quality control (food production) and research (eel status monitoring).
Health status was evaluated also by biomarker analysis (ChE), and data were compared with age of eel. Age determination was performed with otolith reading and fish scale reading and a calibration between the two methods was possible.
The study area was the Comacchio lagoon, a brackish coastal lagoon in Italy, well known as an example of suitable environment for eel fishery, where the capability to use the local
natural resources has long been a key factor for a successful fishery management.
Comacchio lagoon is proposed as an area where an effective EMP can be performed, in agreement with the main features (management of basins, reduction of mortality due to predators,etc.) highlighted for designation of European Restocking Area (ERA).
The ERA is a new concept, proposed as a pillar of a new strategy on eel management and conservation. Furthermore, the features of ERAs can be useful in the framework of European Scale Eel Management Plan (ESEMP), proposed as a European scale implementation of EMP, providing a more effectiveness of conservation measures for eel management.
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Brunelli, Federico <1975>. "Evaluation of Silver European EEL (anguilla anguilla) for the implementation of an Effective EEL Management plan in Mediterranean Coastal Lagoons." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4788/.
Повний текст джерелаАнотація:
This thesis presents SEELF (Sustainable EEL fishery) Index, a methodology for evaluation of European eel (Anguilla anguilla) for the implementation of an effective Eel Management Plan, as defined by EU Regulation No.1100/2007.
SEELF uses internal and external indices, age and blood parameters, and selects suitable specimen for restocking; it is also a reliable tool for eel stock management.
In fact, SEELF Index, was developed in two versions: SEELF A, to be used in field operations (catch&release, eel status monitoring) and SEELF B to be used for quality control (food production) and research (eel status monitoring).
Health status was evaluated also by biomarker analysis (ChE), and data were compared with age of eel. Age determination was performed with otolith reading and fish scale reading and a calibration between the two methods was possible.
The study area was the Comacchio lagoon, a brackish coastal lagoon in Italy, well known as an example of suitable environment for eel fishery, where the capability to use the local
natural resources has long been a key factor for a successful fishery management.
Comacchio lagoon is proposed as an area where an effective EMP can be performed, in agreement with the main features (management of basins, reduction of mortality due to predators,etc.) highlighted for designation of European Restocking Area (ERA).
The ERA is a new concept, proposed as a pillar of a new strategy on eel management and conservation. Furthermore, the features of ERAs can be useful in the framework of European Scale Eel Management Plan (ESEMP), proposed as a European scale implementation of EMP, providing a more effectiveness of conservation measures for eel management.
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Ligorini, Viviana. "Trajectoires d’évolution des communautés phytoplanctoniques et des lagunes côtières du littoral corse et applications." Electronic Thesis or Diss., Corte, 2023. http://www.theses.fr/2023CORT0005.
Повний текст джерелаАнотація:
Les lagunes côtières présentent une forte importance écologique, économique et sociale. Toutefois, elles sont particulièrement vulnérables face aux pressions anthropiques et aux changements climatiques, notamment en région méditerranéenne. La conservation des lagunes est donc fondamentale pour la protection des systèmes littoraux et le bien-être des populations humaines. Cette thèse vise à apporter un soutien aux politiques publiques pour la restauration et la conservation des lagunes côtières, mais également à rechercher de potentielles valorisations des ressources. Les travaux ambitionnent d’approfondir les connaissances sur les trajectoires d’évolution des communautés phytoplanctoniques et des lagunes côtières du littoral corse, (i) en questionnant l’évolution des variations saisonnières face aux paramètres abiotiques, mais également l’impact des variations de salinité, notamment dans le cadre du changement climatique, sur de grandes et/ou de petites lagunes et (ii) en testant différentes approches intégrées avec la prise en compte de l’impact de l’homme, du bassin versant jusqu’à la mer.Les communautés phytoplanctoniques de six lagunes du littoral corse (Diana, Urbino, Biguglia, Arasu, Santa Giulia, Balistra) sont étudiées dans ce cadre. Les analyses sur le long terme grâce aux données historiques disponibles, les suivis in situ et les expérimentations réalisées ont permis d’identifier des dynamiques saisonnières marquées des communautés phytoplanctoniques et des éléments centraux pour la gestion des milieux lagunaires. La tendance vers une dominance des dinoflagellés, l’émergence d’espèces tolérant le stress (e.g. salinités extrêmes), parfois potentiellement toxiques, l’augmentation des blooms phytoplanctoniques ainsi que des modifications des cycles saisonniers ont été mis en évidence sur des lagunes de grandes et de petites tailles. Ces phénomènes sont liés principalement à des impacts d’origine anthropique (pollution, rejets urbains, usage de l’eau, tourisme…), des altérations hydrologiques engendrées par des interventions humaines, et le changement climatique.L’étude d’autres compartiments biotiques et abiotiques de l’écosystème, comme l’invasion biologique, la production halieutique ou le fonctionnement hydrogéologique, a confirmé la nécessité d’appliquer une approche écosystémique, du bassin versant jusqu’à la mer, pour comprendre le fonctionnement global du système. La prise en compte de l’Homme dans l’étude des trajectoires écologiques a été aussi mise en évidence, soulignant que les lagunes doivent être considérées comme des socio-écosystèmes. Cette vision holistique est fondamentale pour envisager une gestion optimale intégrée de la complexité du système.Cette thèse apporte de plus un regard nouveau sur les lagunes de petites surfaces à l’échelle du littoral méditerranéen qui sont très réactives aux changements et qui peuvent être considérées comme des sentinelles de l’évolution climatique.Parallèlement, l‘étude d’une souche de diatomée issue de l’étang de Diana a démontré des caractéristiques écophysiologiques et chimiques prometteuse pour de potentielles applications biotechnologiques dans le domaine de l’aquaculture, en raison de son origine lagunaire.L’ensemble de ces résultats sur les trajectoires d’évolution passées et futures a permis de marquer la complexité et la vulnérabilité des lagunes côtières (et celles de petites surfaces en particulier) face aux menaces croissantes et des interrogations sur leur avenir. Ce travail fournit donc des éléments d’appui pour la gestion des lagunes et de valorisation des ressources liées à ces milieux, en proposant une gestion intégrée et interdisciplinaire pour une conservation durable de ces écosystèmes et des services fournis, notamment dans le cadre du changement climatiqueCoastal lagoons are of high ecological, economic and social importance. Nevertheless, they are particularly vulnerable to anthropogenic pressure and climate change, especially in the Mediterranean region. Lagoons’ conservation is hence fundamental for the protection of littoral systems and the well-being of human populations. This thesis aims to provide support for public policies for the restoration and conservation of coastal lagoons, but also to look for potential resources’ valorisation. The works aim to deepen knowledge on the evolution trajectories of phytoplankton communities and coastal lagoons of the Corsican coast, (i) by questioning the evolutions of seasonal variations linked to abiotic factors, but also the impact of salinity variations, particularly in the context of climate change, on large and/or small lagoons, and (ii) by testing different integrated approaches taking into account the human impact, from the watershed to the sea.Phytoplankton communities of six Corsican lagoons (Diana, Urbino, Biguglia, Arasu, Santa Giulia, Balistra) are studied in this framework. Analysis of long term historical datasets available, in situ monitoring and experimental essays performed allowed the identification of marked seasonal dynamics of phytoplankton communities and central elements for coastal lagoons’ management. The trend towards the dominance of dinoflagellates, the emergence of stress-tolerant (e.g. extreme salinities), sometimes potentially toxic, the increase in phytoplankton blooms as well as changes in the seasonal cycles have been highlighted in large and small sized lagoons. These phenomena are mainly linked to anthropogenic impacts (pollution, urban wastewater, water use, tourism…), hydrogeological alterations caused by human interventions, and climate change.The study of other biotic and abiotic compartments of the ecosystem, like biological invasion, fish production or hydrogeological functioning, has confirmed the need to apply an ecosystem-based approach, from the watershed to the sea, in order to understand the overall functioning of the system. The consideration of Humans in the study of ecological trajectories has also been highlighted, emphasizing that lagoons should be considered as social-ecological systems. This holistic vision is fundamental to consider an optimal integrated management of the complexity of the system.Moreover, this thesis provides a new perspective on small surfaced lagoons on the Mediterranean coast scale, which are very reactive to change and can thus be considered as sentinels of climate change.At the same time, the study of a diatom strain from the Diana lagoon has demonstrated promising ecophysiological and chemical characteristics for potential biotechnological applications in the aquaculture domain, due to its lagoon origin.The overall results on the past and future evolution trajectories have highlighted the complexity and vulnerability of coastal lagoons (and those of small surface areas in particular) in the face of growing threats and some questions about their future. This work provides hence some supporting elements for the lagoon management and the valorisation of resources linked to these environments, by proposing an integrated and interdisciplinary management for the sustainable conservation of these ecosystems and of the services provided, particularly in the climate change context
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Compte, Ciurana Jordi. "Food webs of Mediterranean coastal wetlands." Doctoral thesis, Universitat de Girona, 2010. http://hdl.handle.net/10803/7879.
Повний текст джерелаАнотація:
En aquesta tesi doctoral s'han estudiat els efectes directes i indirectes de dos tipus d'espècies claus de la comunitat aquàtica dels aiguamolls de l'Empordà (aiguamolls costaners mediterranis amb una xarxa tròfica senzilla). S'han realitzat experiments al camp utilitzant microcosmos i mesocosmos i els resultats han estat analitzats mitjançant tres aproximacions: la taxonòmica, la funcional i la de mides. S'ha comprovat que en situacions amb absència de predadors i dominància d'una única espècie en el zooplàncton (en aquest cas Calanipeda aquaedulcis i Daphnia magna), la segregació del recurs entre els diferents estadis de desenvolupament de la mateixa espècie zooplanctònica és una estratègia per evitar la competència intraespecífica en condicions de limitació de recurs. Per altra banda, la presència de diferents top-predators a la comunitat aquàtica (en aquest cas la medusa Odessia maeotica i el peix Aphanius iberus) desencadena una cascada tròfica en el plàncton però amb efectes top-down diferents segons el top-predator.In this PhD, direct and indirect effects of key species were studied in the aquatic community of the Empordà wetlands (Mediterranean coastal wetlands with a simple food web). Different field experiments were carried out using microcosms and mesocosms. To analyze the results, three approaches were used: taxonomic, functional and size-based. Results obtained from the experiments confirm that, in situation with absence of predator and dominance of single zooplanktonic specie (in this case Calanipeda aquaedulcis and Daphnia magna), resource partitioning among different developmental stages of same zooplanktonic specie is a strategy to reduce the intraespecific competence when the resource is limiting. On the other hand, the presence of different top-predators in aquatic community (in this case the jellyfish Odessia maeotica and the Iberian toothcarp Aphanius iberus) triggers a trophic cascade in plankton, however they have different top-down effects according to top-predator.
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Salel, Tiphaine. "Dynamique des environnements fluvio-lagunaires du Narbonnais à l'Holocène (Golfe du Lion, France)." Thesis, Montpellier 3, 2018. http://www.theses.fr/2018MON30083.
Повний текст джерелаАнотація:
Le paysage littoral de la basse vallée de l’Aude est composé d’une mosaïque de milieux laguno-deltaïques mobiles à l’échelle des derniers millénaires. Du fait de cette mobilité et de l’ancienneté de l’occupation humaine, continue depuis le Néolithique, la compréhension des dynamiques environnementales passées constitue une problématique incontournable de la recherche archéologique narbonnaise. Le travail que nous présentons vise à identifier et expliquer les transformations de ce paysage fluvio-lagunaire à l’Holocène, à partir de l’analyse sédimentologique et micropaléontologique des enregistrements sédimentaires datés au radiocarbone. Dans un premier temps, une étude de la répartition spatiale actuelle des ostracodes des lagunes et embouchures fluviales modernes est proposée en vue d’utiliser cette microfaune comme bioindicateur privilégié des conditions environnementales passées dans la zone d’étude. Elle repose sur le prélèvement d’une soixantaine d’échantillons de sédiments de surface provenant de différents complexes paraliques de Méditerranée nord-occidentale. Les assemblages d’ostracodes actuels permettent de caractériser différents stades d’isolement des bassins, des lagunes complètement fermées jusqu’aux baies largement ouvertes sur la mer, ainsi que la variabilité intra-lagunaire des milieux en relation avec la proximité des embouchures et des graus. La base de données présentée peut être utilisée, à titre comparatif, pour reconstituer les dynamiques géomorphologiques littorales holocènes, telles que la mobilité deltaïque et l’évolution des systèmes barrières-lagunes, dans le golfe du Lion. Dans un second temps, l’étude des enregistrements sédimentaires a permis d’appréhender l’évolution du littoral narbonnais à l’Holocène. Elle repose sur neuf sondages carottés répartis sur les deux branches deltaïques, méridionale et orientale, de l’Aude. Les résultats obtenus permettent de proposer un scénario paléogéographique reconstituant la dynamique des environnements de la basse vallée depuis 9500 ans cal. BP, en même temps qu’ils renseignent le contexte local de la remontée du niveau marin holocène dans l’intervalle 9500-6000 ans cal. BP. Plusieurs problématiques sous-jacentes à l’évolution des paléoenvironnements littoraux narbonnais sont discutées. Elles concernent les modalités de la transgression holocène dans les lagunes du golfe du Lion, l’enregistrement d’un événement marin extrême en fond de ria vers 5200-5000 ans cal. BP, et le rythme de progradation accéléré du delta de l’Aude durant le dernier millénaire. L’identification de deux périodes d’enrichissement en plomb cohérentes avec les principaux pics d’exploitation minière connus en Languedoc à la charnière du changement d’ère et au début du Moyen-âge classique suggère un enregistrement de la fluctuation historique des activités métallurgiquesThe present day Aude valley’s coastal landscape is the result of unstable lagoonal and deltaic environments during the last millennia. The understanding of past environmental dynamics is a key issue of the local ar-chaeological research, because since the Neolithic period human beings have settled in this area. This work aims to identify and explain the fluvio-lagoonal landscape’s evolution in the Narbonne region during the Holocene by using sedimentology, micropalaeontology and radiocarbon sediment datations. First, we analysed the present ostracods spatial distribution in modern lagoons and river mouths in order to use this microfauna as a bioindicator of past environmental conditions in the study area. Various aquatic envi-ronments (60) from the NW Mediterranean coastline were studied. The present ostracod assemblages characterize different stages of isolation, from completely closed lagoons to widely open marine bays, as well as intra-lagoonal environmental variability in relation to the inlets and river mouth proximities. The proposed database can be used to reconstruct coastal geomorphologies and dynamics, such as the holocene evolution of delta and barrier-lagoon systems in the Gulf of Lion. Second, sedimentary recording studies have been used to analyse the Narbonne’s coastal evolution. This study is based on nine cores distributed over the southern and eastern deltaic branches of the Aude river. With theses results, it is possible to propose a palaeogeographic scenario associated with the environmental dynamics of the lower valley since 9500 years cal. BP. This same data informs us about the local context of the Holocene sea level rise during the 9500-6000 years cal. BP. Several issues are discussed such as : the Holocene’s transgressions of the Gulf of Lion’s lagoons, the extreme marine event near the bay head delta around 5200-5000 years cal. BP, and the Aude delta’s rapid progradation during the last millennium. Additionally, we identified two periods of lead enrichment; which are consistent with the major mining peaks known in Languedoc (beginning of the first century AD - beginning of the classical Middle ages) and suggest a record of fluctuating metallurgical activity
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Verdiell, Cubedo David. "Ictiofauna de las zonas someras litorales del Mar Menor (SE Península Ibérica): parámetros de su biología y relaciones con el hábitat." Doctoral thesis, Universidad de Murcia, 2009. http://hdl.handle.net/10803/11084.
Повний текст джерелаАнотація:
En la presente tesis doctoral se aborda el estudio de las comunidades de peces presentes en las zonas someras litorales del Mar Menor. La comunidad objeto de estudio estuvo conformada principalmente por individuos en estado de postlarva e individuos juveniles, junto con los adultos de especies de talla pequeña.Los objetivos planteados fueron:A) Caracterización específica de la ictiofauna.B) Análisis de la biología poblacional y relaciones con el hábitat de especies de peces bentónicos.C) Análisis de las relaciones entre los tipos de hábitats litorales y la comunidad de peces.Los resultados obtenidos ponen de manifiesto la elevada importancia de las zonas someras litorales de la laguna como hábitats esenciales para la multitud de especies ícticas, tanto aquellas que poseen interés pesquero comercial (familias Atherinidae, Mugilidae y Sparidae) como aquellas que presentan interés conservacionista (familias Cyprinodontidae y Syngnathidae).The present PhD thesis investigates the small-sized fish assemblages in the shallow littoral areas of the Mar Menor coastal lagoon. The study was focused on juveniles of migrant fish species that recruit into the lagoon and short-lived resident fish species that spend their entire lives in it.The objectives were:A) To characterize the fish assemblages.B) To examine population biology and habitat associations of benthic fish species.C) To analyse the relationship between littoral habitat types and fish assemblages.The results pointed out the importance of shallow littoral areas of the lagoon as essential habitats for many fish species, both juvenile fish species of commercial interest (Atherinidae, Mugilidae and Sparidae families) and threatened fish species (Cyprinodontidae and Syngnathidae families).
Книги з теми "Mediterranean coastal lagoons"
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General Fisheries Council for the Mediterranean, Management of Coastal Lagoon Fisheries, Studies and Reviews No. 61 (F2662). Food & Agriculture Org, 1985.
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Food and Agriculture Organization (FAO). Mediterranean Coastal Lagoons Sustainable Management and Interactions among Aquaculture, Capture Fisheries and the Environment: GFCM Studies and Reviews #99. Rowman & Littlefield Publishers, Incorporated, 2015.
Знайти повний текст джерелаЧастини книг з теми "Mediterranean coastal lagoons"
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Sanjaume, Eulalia, Josep E. Pardo-Pascual, and Francesca Segura-Beltran. "Mediterranean Coastal Lagoons." In The Spanish Coastal Systems, 237–67. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-93169-2_11.
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Guyoneaud, R., R. Matheron, R. Baulaigue, K. Podeur, A. Hirschler, and P. Caumette. "Anoxygenic phototrophic bacteria in eutrophic coastal lagoons of the French Mediterranean and Atlantic Coasts (Prévost Lagoon, Arcachon Bay, Certes fishponds)." In Coastal Lagoon Eutrophication and ANaerobic Processes (C.L.E.AN.), 33–43. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1744-6_3.
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D’Ascola, Filippo, Anne-Laure Beck, Maria Luisa Cassese, Martin Jones, Nicola Lugeri, Valeria Pesarino, Andrea Salmeri, and Mohamed Amine Taji. "Monitoring of the evolution of “barene” borders and the safeguard of the Venice Lagoon morphology: a contribution from the Coastal Change From Space Project results." In Ninth International Symposium “Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques”, 200–210. Florence: Firenze University Press, 2022. http://dx.doi.org/10.36253/979-12-215-0030-1.18.
Повний текст джерелаАнотація:
This research proposes the acquisition of a time series from optical satellites to observe changes in the Venice lagoon, an ecosystem which is very challenging to monitor by means of in situ survey activities, let alone using remote sensing techniques, given the presence of land and sandbars (vegetated intertidal areas). The work describes the specific validation process performed by ISPRA on the results obtained as applied on some target sites of the Venice Lagoon, both natural and partially artificial islands, using fully artificial islands as reference.
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Ahmed, Mahmoud, and Vittorio Barale. "Satellite Surveys of Lagoon and Coastal Waters in the Southeastern Mediterranean Area." In Remote Sensing of the African Seas, 379–401. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-8008-7_19.
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Bulkan, Özlem, Burak Yalamaz, and M. Namık Cagatay. "A sedimentological pattern of a coastal transitional environment: from the Eastern Mediterranean Sea shoreline through the Lake Bafa." In Proceedings e report, 385–91. Florence: Firenze University Press, 2020. http://dx.doi.org/10.36253/978-88-5518-147-1.38.
Повний текст джерелаАнотація:
This study represents the lithological correlation of multi-cores taken from the various parts of the current Lake Bafa basin, BAF35, - 37 - 39 - 41, - 42, - 46. Concerning the main depositional characteristics, we reconstructed fundamental characteristics of local abrupt and gradual environmental fluctuations. The gradual changes reflect four main environmental phases are lacustrine stage (last 0.8 ky), lagoon stage (0.8–1.75 ky BP), marine-river interaction stage (1.75–2.7 ky BP) and the earliest marine-dominated stage (>2.7 ky BP).
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Nasri, Ahmed, Patricia Aïssa, Hamouda Beyrem, and Ezzeddine Mahmoudi. "New Approach for the Evaluation of Ecological Quality in the Mediterranean Coastal Ecosystems, Case Study of Bizerte Lagoon: Marine Nematodes Functional Traits Assessment." In Nematodes - Recent Advances, Management and New Perspectives. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.98815.
Повний текст джерелаАнотація:
Marine ecosystems have great economic and ecological value, as they provide good services and habitats for a variety of organisms. However, the marine environment is under anthropogenic stressors. The Mediterranean basin is one of the most threatened ecosystems, where urban and industrial waste is becoming a growing risk for coastal marine habitats integrity. The Bizerte lagoon represents a major coastal lagoon and is an example of such an aquatic environment continuously exposed to pollutants. Marine nematodes are the most diverse metazoans and represent an excellent model for the environmental monitoring because they can be easily sampled and maintained under experimental conditions. Nematode communities are investigated for the analysis of taxonomic diversity and ecological indices. Currently, we present here to evaluate the ecological quality based on the description of nematode assemblages using biological traits and functional groups. This relatively new approach allows obtaining insight into the status of marine coastal ecosystems.
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Day, John W., Carles Ibáñez, Didier Pont, and Francesco Scarton. "Status and Sustainability of Mediterranean Deltas: The Case of the Ebro, Rhône, and Po Deltas and Venice Lagoon." In Coasts and Estuaries, 237–49. Elsevier, 2019. http://dx.doi.org/10.1016/b978-0-12-814003-1.00014-9.
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Fant, Clyde E., and Mitchell G. Reddish. "Tarsus." In A Guide to Biblical Sites in Greece and Turkey. Oxford University Press, 2003. http://dx.doi.org/10.1093/oso/9780195139174.003.0047.
Повний текст джерелаАнотація:
Tarsus, best known as the home of the Apostle Paul, was the principal city of the eastern Cilician plain. A city renowned in antiquity as a center of culture and learning, Tarsus was visited by such figures as Julius Caesar, Mark Antony, and Cleopatra. Recent excavations have uncovered more remains of the city from Hellenistic and Roman times, including a paved, colonnaded street. Tarsus, the capital of the ancient province of Cilicia, is located near the eastern Mediterranean coast of Turkey. Situated today 10 miles inland from the sea, Tarsus served as a port city because the Cydnus River (today the Tarsus Çayï) passed through Tarsus on its way to the sea. The river was navigable by ships from the Mediterranean coast to Tarsus. Lake Rhegma, a lagoon near the Mediterranean coast into which the river flowed, served as the harbor for Tarsus. During the 6th century C.E., Emperor Justinian moved the course of the Cydnus River to the east of Tarsus, while leaving several minor branches of the river to flow through the city. The city of Tarsus belonged to the region of Asia Minor known as Cilicia. Ancient Cilicia was composed of two parts, Cilicia Pedias (“flat” or “smooth” Cilicia) and Cilicia Trachaei (“rough” Cilicia). Cilicia Pedias was a fertile plain in the eastern part of the region, whereas Cilicia Trachaei was a rugged, heavily forested mountainous region in the western part, dominated by the Taurus Mountains. Tarsus, the major city of Cilicia Pedias, was located just south of the Cilician Gates, the main pass through the Taurus Mountains. Through this pass ran the major road connecting Syria to Asia Minor, thus providing Tarsus access to trade and travel over land as well as over the Mediterranean. The earliest settlement at Tarsus was likely at Gözlü Kule, a tumulus on the southeast side of modern Tarsus. Excavations under the direction of Hetty Goldman of Princeton University before and immediately after World War II at the tumulus discovered evidence that the site was occupied from Neolithic to Islamic times. At least as early as the 3rd millennium B.C.E., a fortified town existed at the site of Tarsus.
Тези доповідей конференцій з теми "Mediterranean coastal lagoons"
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Katsaros, Dimitris. "GEOCHEMICAL AND SEDIMENTOLOGICAL ASSESSMENT OF THE PROKOPOS COASTAL LAGOON SEDIMENTS, MEDITERRANEAN SEA WESTERN GREECE." In 15th International Multidisciplinary Scientific GeoConference SGEM2015. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2015/b52/s20.033.
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BEZZI, Annelore, Raffaella PIANI, Simone PILLON, Marco LIPIZER, Antonio BRATUS, and Giorgio FONTOLAN. "Monitoring turbidity and sediment re-suspension induced by channel dredging and subaqueous disposal in a deficit lagoon." In Conférence Méditerranéenne Côtière et Maritime - Coastal and Maritime Mediterranean Conference. Editions Paralia, 2015. http://dx.doi.org/10.5150/cmcm.2015.003.
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BEZZI, Annelore, Eleonora DRIUSSO, Davide MARTINUCCI, and Giorgio FONTOLAN. "The historical practice of disposal of dredged sediments in the Grado and Marano lagoon: evaluation of geomorphological, evolutionary and functional perspective of the resulting artificial salt-marshes." In Conférence Méditerranéenne Côtière et Maritime - Coastal and Maritime Mediterranean Conference. Editions Paralia, 2015. http://dx.doi.org/10.5150/cmcm.2015.024.
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Bekova, Radoslava, Bogdan Prodanov, and Todor Lambev. "MULTIDISCIPLINARY ICHTHYOLOGICAL AND GEOLOGICAL RESEARCH OF THE DURANKULAK LAKE, NORTHERN BULGARIAN BLACK SEA COAST." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/5.1/s20.038.
Повний текст джерелаАнотація:
The Durankulak Lake is the northernmost Bulgarian Black Sea lagoon. The hydrological regime of the lake is, for the most part, the inflow of water in karst underground cracks. Over the years, the rare cases of digging a sea-lake canal have been a significant cause of the oligohaline estuarine wetlands nature of the water body. The publication aims to present current research on the structure of the lake bottom, the heart of the substrate and changes over the years, using data from a multi-beam echo sounder and side-scan sonar, as well as new data for ichthyological fauna. In the period 2020-2021, the lake was monitored, including key physicochemical indicators, which indicate an increase in the period of eutrophication due to changes in climatic conditions and the impact of anthropogenic pressure. The average salinity of lake waters is approximately 2 ppm salinity, with a maximum at the end of summer - 4 ppm salinity and a minimum in spring - 1 ppm salinity. The average data of the other physicochemical indicators are the following: T�C-13.5, pH-8.48, O2 ml/ - 7.52 for the period 2019 - 2021. The hydrological and hydromorphological features of Durankulak Lake are crucial for the composition of its fish fauna, which is mainly composed of freshwater and brackish forms. The fish that inhabit the year-round Durankulak Lake belong to several faunal complexes. In the first place is the complex of primary freshwater, which is represented by nine species belonging to the families Cyprinidae (6 species), Siluridae (1 species), Gasterosteidae (1 species) and Gobiidae (4 species). The group of Mediterranean immigrants, represented by only one species of the family Syngnathidae, is the least represented.
Звіти організацій з теми "Mediterranean coastal lagoons"
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Funkenstein, Bruria, and Cunming Duan. GH-IGF Axis in Sparus aurata: Possible Applications to Genetic Selection. United States Department of Agriculture, November 2000. http://dx.doi.org/10.32747/2000.7580665.bard.
Повний текст джерелаАнотація:
Many factors affect growth rate in fish: environmental, nutritional, genetics and endogenous (physiological) factors. Endogenous control of growth is very complex and many hormone systems are involved. Nevertheless, it is well accepted that growth hormone (GH) plays a major role in stimulating somatic growth. Although it is now clear that most, if not all, components of the GH-IGF axis exist in fish, we are still far from understanding how fish grow. In our project we used as the experimental system a marine fish, the gilthead sea bream (Sparus aurata), which inhabits lagoons along the Mediterranean and Atlantic coasts of Europe, and represents one of the most important fish species used in the mariculture industry in the Mediterranean region, including Israel. Production of Sparus is rapidly growing, however, in order for this production to stay competitive, the farming of this fish species has to intensify and become more efficient. One drawback, still, in Sparus extensive culture is that it grows relatively slow. In addition, it is now clear that growth and reproduction are physiological interrelated processes that affect each other. In particular sexual maturation (puberty) is known to be closely related to growth rate in fish as it is in mammals, indicating interactions between the somatotropic and gonadotropic axes. The goal of our project was to try to identify the rate-limiting components(s) in Sparus aurata GH-IGF system which might explain its slow growth by studying the ontogeny of growth-related genes: GH, GH receptor, IGF-I, IGF-II, IGF receptor, IGF-binding proteins (IGFBPs) and Pit-1 during early stages of development of Sparus aurata larvae from slow and fast growing lines. Our project was a continuation of a previous BARD project and could be divided into five major parts: i) obtaining additional tools to those obtained in the previous project that are necessary to carry out the developmental study; ii) the developmental expression of growth-related genes and their cellular localization; iii) tissue-specific expression and effect of GH on expression of growth-related genes; iv) possible relationship between GH gene structure, growth rate and genetic selection; v) the possible role of the IGF system in gonadal development. The major findings of our research can be summarized as follows: 1) The cDNAs (complete or partial) coding for Sparus IGFBP-2, GH receptor and Pit-1 were cloned. Sequence comparison reveals that the primary structure of IGFBP-2 protein is 43-49% identical to that of zebrafish and other vertebrates. Intensive efforts resulted in cloning a fragment of 138 nucleotides, coding for 46 amino acids in the proximal end of the intracellular domain of GH receptor. This is the first fish GH receptor cDNA that had been cloned to date. The cloned fragment will enable us to complete the GH - receptor cloning. 2) IGF-I, IGF-II, IGFBP-2, and IGF receptor transcripts were detected by RT-PCR method throughout development in unfertilized eggs, embryos, and larvae suggesting that these mRNAs are products of both the maternal and the embryonic genomes. Preliminary RT-PCR analysis suggest that GH receptor transcript is present in post-hatching larvae already on day 1. 3) IGF-1R transcripts were detected in all tissues tested by RT-PCR with highest levels in gill cartilage, skin, kidney, heart, pyloric caeca, and brain. Northern blot analysis detected IGF receptor only in gonads, brain and gill cartilage but not in muscle; GH increased slightly brain and gill cartilage IGF-1R mRNA levels. 4) IGFBP-2 transcript were detected only in liver and gonads, when analyzed by Northern blots; RT-PCR analysis revealed expression in all tissues studied, with the highest levels found in liver, skin, gonad and pyloric caeca. 5) Expression of IGF-I, IGF-II, IGF-1R and IGFBP-2 was analyzed during gonadal development. High levels of IGF-I and IGFBP-2 expression were found in bisexual young gonads, which decreased during gonadal development. Regardless of maturational stage, IGF-II levels were higher than those of IGF-L 6) The GH gene was cloned and its structure was characterized. It contains minisatellites of tandem repeats in the first and third introns that result in high level of genetic polymorphism. 7) Analysis of the presence of IGF-I and two types of IGF receptor by immunohistochemistry revealed tissue- and stage-specific expression during larval development. Immunohistochemistry also showed that IGF-I and its receptors are present in both testicular and ovarian cells. Although at this stage we are not able to pinpoint which is the rate-limiting step causing the slow growth of Sparus aurata, our project (together with the previous BARD) yielded a great number of experimental tools both DNA probes and antibodies that will enable further studies on the factors regulating growth in Sparus aurata. Our expression studies and cellular localization shed new light on the tissue and developmental expression of growth-related genes in fish.