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Book
Suitability of local materials to purify Akaki Sub-Basin water
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ISBN: 1000006938 3866441517 Year: 2007 Publisher: KIT Scientific Publishing

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Abstract

Dissolved and suspended particulate matter (SPM) bound Cu, Zn, Ni, As, Pb, Mn, and Fe are common pollutants in surface and groundwater of the Akaki Sub-Basin.This work (1) presents results of water quality analysis and (2) evaluates an innovative approach for removing heavy metals from polluted water using natural materials. Removal capacities of the filter media for Cu, Zn, Ni, and Pb reach 90%. The main removal mechanisms involved are weak sorption and surface precipitation.


Book
Mercury and Methylmercury Contamination of Terrestrial and Aquatic Ecosystems
Authors: ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

This Special Issue aims to provide new insights into the issue of the mercury contamination of terrestrial and aquatic ecosystems. This ubiquitous contaminant has been used by humans for many years, resulting in global contamination. When this toxic contaminant is converted to methylmercury, it accumulates in trophic chains, which is a major issue for wildlife and human health. The nine articles contained within this Special Issue on ‘‘Mercury and Methylmercury Contamination of Terrestrial and Aquatic Ecosystems’’ endeavour to identify the historical evolution of Hg and MeHg levels in aquatic environments, and to evaluate the impact of current and historical human activities, such as mining, climate change, and soil erosion, on receptor ecosystems and food chains.


Book
Integrated Water Resources Research : Advancements in Understanding to Improve Future Sustainability
Author:
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Anthropogenic and natural disturbances to freshwater quantity and quality are a greater issue for society than ever before. To successfully restore water resources requires understanding the interactions between hydrology, climate, land use, water quality, ecology, and social and economic pressures. This Special Issue of Water includes cutting edge research broadly addressing investigative areas related to experimental study designs and modeling, freshwater pollutants of concern, and human dimensions of water use and management. Results demonstrate the immense, globally transferable value of the experimental watershed approach, the relevance and critical importance of current integrated studies of pollutants of concern, and the imperative to include human sociological and economic processes in water resources investigations. In spite of the latest progress, as demonstrated in this Special Issue, managers remain insufficiently informed to make the best water resource decisions amidst combined influences of land use change, rapid ongoing human population growth, and changing environmental conditions. There is, thus, a persistent need for further advancements in integrated and interdisciplinary research to improve the scientific understanding, management, and future sustainability of water resources.

Keywords

physical habitat --- aquatic ecology --- stream health --- environmental flows --- land use --- hydrology --- hydroecology --- ecohydrology --- climate change --- Appalachia --- reforestation --- land use-land cover --- land-atmosphere coupling --- water quality --- environmental perceptions --- human dimensions --- spatial models --- socioeconomics --- urban watershed management --- municipal watershed --- water quality impairment --- collaborative adaptive management --- water resources --- urban watersheds --- endocrine disrupting chemical --- opioid --- pathway analysis --- ontology --- metabolomics --- decision-making --- logit regression --- farmer perceptions --- social networks --- public funds --- water conservation adoption --- good governance --- sanitation --- sustainability --- water supply --- water-saving agriculture --- Chinese provincial input efficiency --- three-stage DEA model --- environmental variables --- Boufakrane river watershed --- remote sensing --- LULCC --- water balances --- vulnerability --- total dissolved solids --- drinking water --- Appalachian Mountains --- streamflow sensitivity --- water security --- water balance partitioning --- Budyko --- Escherichia coli --- Suspended particulate matter --- Water quality --- Land use practices --- Watershed management --- basin --- hydrologic model --- reaeration rates --- stream metabolism --- watershed --- physicochemistry --- land use practices --- experimental watershed --- suspended particulate matter --- stream water temperature --- watershed management --- bacteria --- land-use practices --- environmental persistence --- saturated hydraulic conductivity --- pedotransfer function --- model validation --- Chesapeake Bay Watershed --- experimental watershed study --- human dimensions of water --- watershed modeling --- hydrological modeling --- water pollutants


Book
Dinophysis toxins : distribution, fate in shellfish and impacts
Authors: ---
ISBN: 3039213644 3039213636 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Several species of Dinophysis produce one or two groups of lipophilic toxins: okadaic acid (OA) and its derivatives; or the dinophysistoxins (DTXs) (also known as diarrhetic shellfish poisons or DSP toxins) and pectenotoxins (PTXs). DSP toxins are potent inhibitors of protein phosphatases, causing gastrointestinal intoxication in consumers of contaminated seafood. Forty years after the identification of Dinophysis as the causative agent of DSP in Japan, contamination of filter feeding shellfish exposed to Dinophysis blooms is recognized as a problem worldwide. DSP events affect public health and cause considerable losses to the shellfish industry. Costly monitoring programs are implemented in regions with relevant shellfish production to prevent these socioeconomic impacts. Harvest closures are enforced whenever toxin levels exceed regulatory limits (RLs). Dinophysis species are kleptoplastidic dinoflagellates; they feed on ciliates (Mesodinium genus) that have previously acquired plastids from cryptophycean (genera Teleaulax, Plagioselmis, and Geminigera) nanoflagellates. The interactions of Dinophysis with different prey regulate their growth and toxin production. When Dinophysis cells are ingested by shellfish, their toxins are partially biotransformed and bioaccumulated, rendering the shellfish unsuitable for human consumption. DSP toxins may also affect shellfish metabolism. This book covers diverse aspects of the abovementioned topics—from the laboratory culture of Dinophysis and the kinetics of uptake, transformation, and depuration of DSP toxins in shellfish to Dinophysis population dynamics, the monitoring and regulation of DSP toxins, and their impact on the shellfish industry in some of the aquaculture regions that are traditionally most affected, namely, northeastern Japan, western Europe, southern Chile, and New Zealand.

Keywords

WitOMI analysis --- n/a --- DST accumulation --- mussel --- dinophysistoxins --- depuration --- human health --- pectenotoxins (PTXs) --- cryptophytes --- Mesodinium --- dinophysis --- compartmentalization --- resistance --- Japanese scallop --- surf clam --- HAB monitoring --- toxins --- organic matter --- OMI analysis --- PTXs --- time-series --- Diarrhetic shellfish toxins --- predator-prey preferences --- immunity --- okadaic acid --- physical–biological interactions --- defense --- digestion --- Dinophysis --- harmful algal blooms --- pectenotoxin --- El Niño Southern Oscillation --- lysate --- suspended particulate matter (SPM) --- D. caudata --- mixotrophic cultures --- Mytilus galloprovincialis --- bivalves --- diarrhetic shellfish poisoning --- biotransformation --- Mesodinium cf. rubrum --- RNA-Seq --- DST esterification --- Mesodinium rubrum --- statistical analysis --- seasonality --- mass culture conditions --- D. acuminata-complex --- Argopecten purpuratus --- harmful algal bloom --- pipis (Plebidonax deltoides) --- DTX-2 --- Reloncaví Fjord --- pectenotoxins --- deep sequencing --- climatic anomaly --- Brazil --- qPCR --- high throughput sequencing --- DSP --- accumulation --- LC/MS/MS --- Protoceratium reticulatum --- shellfish toxicity --- transcriptomic response --- New Zealand --- blooms --- trophic transfer --- metabolism --- bacterial community --- kinetics --- marine biotoxins --- diarrhetic shellfish toxins --- bivalve shellfish --- Diarrhetic Shellfish Toxins (DST) --- diarrhetic shellfish toxins (DST) --- Scotland --- Dinophysis acuminata --- DSP toxins --- toxin accumulation --- Southern Annual Mode --- Diarrheic Shellfish Poisoning --- Dinophysis toxins --- OA --- marine toxins --- toxin vectors --- wild harvest --- Dinophysis acuta --- Sydney rock oyster (Saccostrea glomerata) --- Argopecten irradians --- dinophysistoxin --- Port Underwood --- aquaculture --- niche partitioning --- Dinoflagellates. --- Dinoflagellata --- Dinoflagellida --- Dinophyceae --- Dinophyta --- Pyrrophycophyta --- Pyrrophyta --- Phytoflagellates --- physical-biological interactions --- El Niño Southern Oscillation --- Reloncaví Fjord


Book
Ambient Air Quality in the Czech Republic
Author:
Year: 2021 Publisher: Basel, Switzerland : MDPI - Multidisciplinary Digital Publishing Institute,

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Ambient air quality in the present-day Czech Republic (CR), one of the two succession countries of Czechoslovakia post-1993, was perceived as a major problem with severe human health and environmental consequences, particularly between the 1970s and 1990s. Since that time, the ambient air quality in the CR has improved substantially, due to newly introduced stringent legislation and technical countermeasures. Nevertheless, there are still activities which represent significant emission sources, such as local heating and increased vehicle travel through communities. After a substantial decrease in emissions in both the CR and its neighbouring countries, the levels of some ambient air pollutants from the 2000s are still not satisfactory. In this respect, aerosol, ground-level ozone, and benzo[a]pyrene remain major problems, as they do elsewhere in Europe. The book provides a valuable update both on time trends and spatial changes in ambient air quality, and highlights the recent activities in both monitoring and modelling of principle ambient air pollutants in the CR.

Keywords

air pollution --- air quality --- 1950–2018 --- Czechoslovakia --- emissions --- aerosol --- ground-level ozone --- atmospheric deposition --- health outcomes --- environmental issues --- particles --- traffic --- dispersion --- PM10 --- pollution --- F-gases --- greenhouse gases --- global warming potential --- substitutes for ozone depleting substances --- Czech Republic --- microsensors --- particle counter --- gas analyzers --- relative humidity --- mixing layer height --- ceilometer --- suspended particulate matter --- Czech-Polish border --- urban parks --- particulate matter --- nitrogen oxides --- ozone --- PM pollution --- seasonality --- meteorological conditions --- source apportionment --- PMF (Positive Matrix Factorization) --- PM2.5 --- long-term trends --- background scale --- locomotives --- non-road engines --- rail --- diesel-electric --- real-world emissions --- portable on-board emissions monitoring systems --- NOx --- real driving emissions --- urban canopy --- weather prediction --- validation --- PM1 aerosol --- elements --- water-soluble ions --- factor analysis --- benzo(a)pyrene --- ambient air concentrations --- spatial-temporal --- population exposure --- transboundary transport --- meteorological factors --- monitoring stations --- Passing–Bablok test --- regression analysis --- statistical modeling --- analysis of variance --- tower --- high-volume sampler --- wind-direction-dependent sampling --- neutron activation analysis --- elemental composition --- cross-border pollution transport --- AIR BORDER --- Czech-Polish borderlands --- Interreg --- NO2 --- passive sampler --- Dieselgate --- Prague --- traffic volume --- citizen science --- public policy --- health effects --- n/a --- 1950-2018 --- Passing-Bablok test --- Research. --- Environmental economics. --- Pollution prevention.


Book
Coastal Waters Monitoring Using Remote Sensing Technology
Authors: ---
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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Around 10% of the global population lives in the world’s coastal zones, mostly concentrated in the world’s largest megacities. In many regions, the population is exposed to a variety of natural hazards and space-based observations. This Special Issue will focus on the usage of remote sensing alone or in synergy with in situ measurments and modeling tools to provide precise and systematic information about processes acting in the world’s coastal zones.

Keywords

ACOLITE --- coastal waters --- atmospheric correction --- time-series --- management --- Sentinel-2 --- radon transform --- remote sensing --- bathymetry inversion --- multi-scale monitoring --- image augmentation --- phytoplankton remote sensing --- coastal ocean --- red tides --- black pixel assumption --- satellite --- sediment transport --- coastal geomorphology --- ocean color --- GOCI --- VIIRS --- turbid waters --- satellite-derived bathymetry --- Copernicus programme --- multi-temporal approach --- lidar --- turbidity --- coastal upwelling --- wind forcing --- river plume --- MODIS --- Arctic Ocean --- hurricanes --- water quality --- Puerto Rico --- harmful algal blooms --- Chattonella spp. --- Skeletonema spp. --- backscattering --- Ariake Sea --- chlorophyll-a variability --- spring–neap tides --- MODIS-Aqua --- total suspended sediment --- river discharge --- band registration --- morphological registration --- multispectral camera --- Micasense Rededge-M --- Pearl River estuary --- diffuse attenuation coefficient --- S-EOF --- land subsidence --- multi-temporal SAR interferometry --- sea-surface height --- relative sea level change --- satellite altimetry data --- GNSS --- coastal urban centers --- natural protected areas --- climate change impact --- physics-based inversion method --- ocean surface circulation --- high frequency radar --- self-organizing map --- empirical orthogonal function --- neural networks --- synoptic characteristics --- wave radar --- sea waves --- model data --- Mediterranean sea --- small river plume --- aerial drone --- coastal processes --- frontal zones --- internal waves --- along-track interferometric synthetic aperture radar (ATI-SAR) --- current line-of-sight (LOS) velocity --- azimuth ambiguity --- baseline-to-platform speed ratio estimation --- storm surge --- coastal flooding --- marine storms --- natural hazards --- steric-effect --- satellite altimetry --- ADG/CDOM colored dissolved organic matter --- Sentinel 3 --- southwestern Puerto Rico --- ocean tidal backwater --- stage–discharge relation --- ocean tide model --- Mekong Delta --- suspended particulate matter --- ocean color data --- satellite remote sensing --- in situ measurements --- C2RCC --- Landsat-8 OLI --- Sentinel-2 MSI --- Mzymta River --- Black Sea --- MUR SST --- SST fronts --- Inner Sea of Chiloé --- northern Patagonia --- suspended sediment --- Typhoon Soudelor --- spatial–temporal distribution --- HF marine radars --- wave energy

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