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River and Lake Ice Processes—Impacts of Freshwater Ice on Aquatic Ecosystems in a Changing Globe

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ISBN: 9783038973881 / 9783038973898 Year: Pages: 210 DOI: 10.3390/books978-3-03897-389-8 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Environmental Sciences
Added to DOAB on : 2019-01-11 09:05:26
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Most freshwater aquatic ecosystems have focused on open-water conditions, during spring, summer, and autumn. Studies in winter during ice-covered conditions are sparse due to the logistic difficulties of sampling during freezing weather and the assumption that these ecosystems are biologically inactive during winter. There is growing evidence, however, that ice conditions can have strong impacts on the flora, fauna, and water quality of freshwater systems, dependent on the severity and duration of the winter season. The magnitude of winter conditions and the duration of the ice-covered period can also set the stage of the biological succession of flora, fauna and water-quality constituents in the subsequent spring and summer seasons (e.g., higher probability of early algal blooms with earlier ice-off dates). Climate change and changes in the type and degree of anthropogenic impacts will also influence the ice regime and hence the ecosystems of northern freshwater systems. This Special Issue provides a venue to report new findings in field-based and modelling research to highlight the importance of the ice regime and ice-induced hydraulic regime of rivers and lakes on their aquatic ecosystems.

Ecological Monitoring, Assessment, and Management in Freshwater Systems

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ISBN: 9783038422662 9783038422679 Year: Pages: XVI, 422 DOI: 10.3390/books978-3-03842-267-9 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Added to DOAB on : 2016-11-04 10:16:09
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Today, sustainability of a healthy freshwater ecosystem and its associated ecosystem services are hot issues with ever-growing attention placed upon them. We are increasingly recognizing that they are crucial for the survival of the aquatic biota and human beings on our planet.The efficient monitoring of water resources is fundamental for effective management of water quality and aquatic ecosystems. The first stage in sustainable ecosystem management is the evaluation of the current status of target ecosystems. Traditionally, and even today, physico-chemical parameters have mainly been used to evaluate the quality of water resources. However, they have a large limit to grab the wholeness of water system, particularly in the sense of ecosystem health and integrity, for which ecological monitoring should be based on biological factors. Various approaches are applicable to ecosystem health assessment at different levels of the biological hierarchy, from genes to ecosystems.This Special Issue is designed to improve scientific understanding and strategies for sound aquatic ecosystem management and services for researchers, decision makers, and stakeholders.

A world of water: Rain, rivers and seas in Southeast Asian histories

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Book Series: Verhandelingen van het Koninklijk Instituut voor Taal-, Land- en Volkenkunde ISBN: 9789067182942 9789004254015 Year: Volume: 240 Pages: 368 DOI: 10.26530/OAPEN_376971 Language: English
Publisher: Brill
Added to DOAB on : 2011-11-04 00:00:00
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Water, in its many guises, has always played a powerful role in shaping Southeast Asian histories, cultures, societies and economies. This volume, the rewritten results of an international workshop, with participants from eight countries, contains thirteen essays, representing a broad range of approaches to the study of Southeast Asia with water as the central theme. As it was exposed to the sea, the region was more accessible to outside political, economic and cultural influences than many landlocked areas. Easy access through sea routes also stimulated trade from an early age. However, the same easy access made Southeast Asia vulnerable to political control by strong outsiders. The sea is, moreover, a source of food, but also of many hazards. At the same time, Southeast Asian societies and cultures are confronted with and permeated by ‘water from heaven’ in the form of rain, flash floods, irrigation water, water in rivers, brooks and swaps, water-driven power plants, and pumped or piped water, in addition to water as a carrier of sewage and pollution. Finally, the volume deals with the role of water in classification systems, beliefs, myths, illness and healing.

Water-Energy-Food Nexus in Large Asian River Basins

Authors: --- ---
ISBN: 9783038423454 783038423447 Year: Pages: Pages: X, 246 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Environmental Sciences
Added to DOAB on : 2017-03-27 09:55:00
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The connections between water, food and energy are currently being discussed more than ever before, thanks to the recently emerged concept of the water–energy–food security nexus. Various organizations and authors have defined and addressed the concept from their own view points: nexus is, indeed in the air.This Special Issue looks at the water–energy–food security nexus in the context of large Asian river basins, with a focus on transboundary rivers shared by several countries. The articles included in the Special Issue analyse what benefits the nexus approach could bring to these kinds of, often quite demanding, settings. And where are the potential pitfalls that call for further development.The thematic areas covered in the Special Issue thus include water resources management; energy planning and policies with an emphasis on hydropower; and food production systems, including fisheries, irrigation and cropland management. Due to its focus on transboundary contexts, the articles also look at the geopolitical, international cooperation and security aspects related to the nexus.The articles of the Special Issue include case studies from relevant transboundary river basins, with a focus on the Mekong River Basin in Southeast Asia as well as the river basins in Central Asia. Articles also include a comparative analysis in several large Asian river basins as well as more theoretical discussions of the water–energy–food security nexus and its linkages to other framings and approaches, such as IWRM and sustainable development.

Turbulence in River and Maritime Hydraulics

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ISBN: 9783038975946 Year: Pages: 296 DOI: 10.3390/books978-3-03897-595-3 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: General and Civil Engineering --- Technology (General)
Added to DOAB on : 2019-03-21 15:50:41
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Understanding of the role of turbulence in controlling transport processes is of paramount importance for the preservation and protection of aquatic ecosystems, the minimization of the deleterious consequences of anthropogenic activity, and the successful sustainable development of river and maritime areas. In this context, the present Special Issue collects 15 papers which provide a representation of the present understanding of turbulent processes and their effects in river and maritime environments. The presented collection of papers is not exhaustive, but it highlights the key priority areas and knowledge gaps in this field of research. The published papers present the state-of-the-art knowledge of complex environmental flows which are useful for researchers and practitioners. The paper contents are an overview of some recent topics of research and an exposure of the current and future challenges associated with these topics.

Keywords

breaking waves --- turbulence invariants --- laboratory experiments --- flow-through system --- tidal inlets --- residence time --- coastal lagoon --- MIKE 3 FM (HD & --- TR) --- MIKE 21 FM (HD) --- dense jet --- current flow --- velocity --- trajectory --- turbulence --- dissipation --- rivers --- meanders --- turbulence --- secondary motion --- prediction --- bedrock canyon --- ADCP --- eddy viscosity --- bed shear stress --- spatial analysis --- smoothed particle hydrodynamics models --- physical modelling --- plunging breaking waves --- vorticity --- turbulent jet --- wave–current interaction --- spectral dissipation --- bottom friction --- numerical model --- hydrodynamic model --- spectral model --- wave attenuation --- energy dissipation --- drag coefficient --- flexible vegetation --- Spartina maritima --- vegetation patch --- wake region --- submerged ratio --- SVF --- channel confluences --- junction angle --- flow deflection zone --- flow retardation zone --- flow separation zone --- numerical modelling --- PANORMUS --- jets --- waves --- turbulence --- mixing --- diffusion --- advection --- river mouth --- flow mixing --- nonlinear shallow water equations --- macrovortices --- sub-grid turbulence --- seabed friction --- flow resistance --- roughness --- gravel-bed rivers --- casting technique --- CFD --- Kelvin–Helmholtz --- billow --- lobe --- cleft --- gravity current --- surface waves --- inclined negatively buoyant jets --- regular waves --- dilution --- sea discharges --- rivers --- maritime areas --- turbulent processes

Sea Surface Salinity Remote Sensing

Authors: ---
ISBN: 9783039210763 / 9783039210770 Year: Pages: 296 DOI: 10.3390/books978-3-03921-077-0 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General)
Added to DOAB on : 2019-12-09 11:49:15
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This Special Issue gathers papers reporting research on various aspects of remote sensing of Sea Surface Salinity (SSS) and the use of satellite SSS in oceanography. It includes contributions presenting improvements in empirical or theoretical radiative transfer models; mitigation techniques of external interference such as RFI and land contamination; comparisons and validation of remote sensing products with in situ observations; retrieval techniques for improved coastal SSS monitoring, high latitude SSS and the assessment of ocean interactions with the cryosphere; and data fusion techniques combining SSS with sea surface temperature (SST). New instrument technology for the future of SSS remote sensing is also presented.

Keywords

sea surface salinity --- remote sensing --- mediterranean sea --- smos --- alboran sea --- data processing --- quality assessment --- MICAP --- forward model --- combined active/passive SSS retrieval algorithm --- different instrument configurations --- retrieval errors --- SMAP --- sea surface salinity --- Arctic Ocean --- sea ice --- river discharge --- Arctic Gateways --- sea surface salinity --- remote sensing --- aquarius --- SMAP --- retrieval algorithm --- calibration --- validation --- satellite salinity --- Gulf of Maine --- bias characteristics --- Scotian Shelf --- Aquarius satellite --- sea surface salinity --- Aquarius Validation Data System (AVDS) --- ocean salinity --- microwave remote sensing --- remote sensing --- sea surface salinity --- SMAP --- SMOS --- Gulf of Mexico --- validation --- coastal --- salinity --- upwelling --- sea surface salinity --- remote sensing --- Arctic ocean --- SMOS --- Arctic rivers --- data processing --- quality assessment --- Aquarius --- Argo --- Sea Surface Salinity --- Water Cycle Observation Mission (WCOM) --- interferometric microwave imager (IMI) --- one-dimensional (1D) aperture synthesis radiometer --- sea surface salinity (SSS) --- brightness temperature (TB) --- sea surface salinity --- microwave radiometry --- remote sensing --- calibration --- retrieval algorithm --- validation --- Aquarius --- SMOS --- SMAP --- sea surface temperature --- sea surface salinity --- SMOS --- retroflections --- surface velocity --- water transport --- salt transport --- n/a --- sea surface salinity --- ocean surface roughness --- microwave radiometry --- remote sensing --- forward model --- retrieval algorithm

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