Search results for "coast"
showing 10 items of 392 documents
Management and research on plastic debris in Uruguayan Aquatic Systems: update and perspectives
2015
Synthetic plastics have become an indispensable component of modern life, and the amount of plastics disposal has increased dramatically as a result. With human population increasing, it is expected that the prevalence of plastic debris in the environment will also increase, unless sustainable daily habits are incorporated, waste management improved, and new alternative materials are discovered and popularized. To date, several reports show negative effects of plastic debris on marine and freshwater fauna (e.g. invertebrates, birds, turtles, marine mammals). Plastic are ubiquitous in the water column, deposited in fine sediments and enter the guts, respiratory structures and tissues of diff…
Residents' attitude towards possible adaptation measures to the sea coast erosion in Latvia
2011
PurposeIn addition to climate changes, human activities in the sea coast area are also important in the context of coastal erosion. There is a need to consider possible measures of adaptation at a national level to solve this issue. The purpose of this paper is to analyze the findings of the interviews made by the author and come to conclusions about residents' attitude towards possible measures of adaptation to the coastal erosion in Latvia.Design/methodology/approachThe research was made by interviewing those seashore residents whose households are most influenced by sea coast erosion along the entire coastline of Latvia in the areas where erosion rate is projected to be at least 6 m unti…
Spatial genetic structure reveals migration directionality in Mediterranean Ruppia spiralis (Western Sicily)
2022
Mediterranean salinas, originally built for salt production, function as alternative wetlands. A variety of accompanying lagoon, ditch, and marsh systems are suitable habitats for salt-tolerant submerged macrophytes and often characterized by monospecific beds of Ruppia. Traditionally, birds are considered the main dispersal vector of submerged macrophytes. However, Ruppia spiralis habitats are under marine influence and therefore interference of coastal currents in their connectivity might be expected. In this study, we aim to infer connectivity and spatial patterns from population genetic structures. Using nuclear microsatellite loci, the nuclear ribosomal cistron and chloroplast sequence…
Global Coastal Permeability database (GCPdb)
2023
The Global Coastal Permeability Database contains both the input and output data of the Global Coastal Permeability Model developed by Tschaikowski et al. (2023) and available at DOI: 10.5281/zenodo.7845568. The model is implemented in R and calculates the coastal permeability for each shoreline segment of the global shoreline vector created by Sayre et al. (2019) with a 30-meter resolution and covering a spatial extent of 180.0°W to 180.0°E longitude and 60.8°S to 83.7°N latitude. The coastline is separated into three sections (A: coastal aquifer section, B: shoreline section, C: shallow section), and permeability values and ranges are provided for each section. Permeability values were de…
Marine pollution in the Libyan costal area: environmental and risk assessment
2018
A comprehensive assessment of the potential adverse effects on environment and human health generated by the inputs of chemicals from the most important Libyan petrochemical plant is presented. Ecotoxicological risk associated with the presence of As, Hg, Ni, Zn and PAHs in marine sediments is low or moderate, with a probability of toxicity for ecosystem < 9% and < 20% for heavy metals and PAHs respectively. However, sur- face sediments result strongly enriched in Hg and As of anthropogenic origin. Investigation of metals in fish allowed to assess potential risks for human populations via fish intake. Target hazard quotients values indicate potential risk associated to toxic metals exposure by…
Lądowe pluskwiaki różnoskrzydłe (Hemiptera: Heteroptera) Gdyni (Pobrzeże Bałtyku)
2017
A list of 149 true-bug species collected form Gdynia and its vicinity (Polish Baltic Coast) is provided, including 11 species recorded for the first time from the Polish Baltic Coast (Elasmostethus minor Horváth, Gonocerus juniperi Herrich-Schaeffer, Tritomegas sexmaculatus (Rambur), Nysius senecionis (Schilling), Deraeocoris annulipes (Herrich-Schaeffer), Psallus perrisi (Mulsant et Rey), Nabis punctatus A. Costa, Oxycarenus modestus (Fallén), Coptosoma scutellatum (Geoffroy), Drymus sylvaticus (Fabricius), and Saldula opacula (Zetterstedt)). Moreover, Dicyphus annulatus (Wolff, 1804) is recorded for the second time in Poland.
Nowe dane o występowaniu lądowych pluskwiaków rożnoskrzydłych (Hemiptera: Heteroptera) na Pobrzeżu Bałtyku
2018
Niniejsza praca prezentuje nowe dane o występowaniu pluskwiaków różnoskrzydłych na Pobrzeżu Bałtyku. Spośród 131 gatunków zebranych z 27 różnych lokalizacji osiem jest nowych dla krainy: Acetropis gimmerthalii, Agramma femorale, Chartoscirta cocksi, Grypocoris sexguttatus, Hallodapus rufescens, Nithecus jacobaeae, Rhynocoris iracundus, Trapezonotus desertus
Wind- and tide-induced currents in the Stagnone Lagoon (Sicily)
2011
The hydrodynamic circulation is analyzed in the coastal lagoon of Stagnone di Marsala, a natural reserve located in the north-western part of Sicily, using both experimental measurements and numerical simulations. Field measurements of velocities and water levels, carried out using an ultrasound sensor (3D), are used to validate the numerical model. A 3D finite-volume model is used to solve the Reynolds-averaged momentum and mass balance differential equations on a curvilinear structured grid, employing the k– $${\varepsilon}$$ turbulence model for the Reynolds stresses. The numerical analysis allows to identify the relative contribution of the forces affecting the hydrodynamic circulation …
Water Level Measurement Locations for Coastal Aquifer Management
2003
The coefficient of variation of the optimal cost (CVOC) method is applied to the Acqua dei Corsari coastal aquifer in Sicily's north coast to find the best point for a new water-level measurement location. The purpose of collecting data from the new measurement location is to reduce uncertainty associated with a stochastic management model for salt-water intrusion control. Assuming that uncertainty mainly stems from spatial variability of permeability, the structural parameters of the stochastic spatial permeability field are estimated using data from a nearby aquifer with similar geological properties. It is first shown through sensitivity analysis that the lack of previous information inh…
Hydrogeochemistry and Water Balance in the Coastal Wetland Area of “Biviere di Gela,” Sicily, Italy
2006
In the study area physical and chemical factors control the composition of surface and groundwaters, which in turn determine the water quality of the "Biviere di Gela" lake. These factors combine to create diverse water types which change their compositional character spatially as rainfall infiltrates the soil zone, moves down a topographically defined flow path, and interacts with bedrock minerals. Low-salinity waters, which represent the initial stage of underground circulation, start dissolving calcium carbonate from the local rocks. The progressive increase in salinity, characterized by substantially higher Ca, SO4, Na and Cl concentrations, suggests that dissolution of CaSO4 and NaCl i…