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https://www.readbyqxmd.com/read/28651218/urban-water-metabolism-indicators-derived-from-a-water-mass-balance-bridging-the-gap-between-visions-and-performance-assessment-of-urban-water-resource-management
#1
M A Renouf, S Serrao-Neumann, S J Kenway, E A Morgan, D Low Choy
Improving resource management in urban areas has been enshrined in visions for achieving sustainable urban areas, but to date it has been difficult to quantify performance indicators to help identify more sustainable outcomes, especially for water resources. In this work, we advance quantitative indicators for what we refer to as the 'metabolic' features of urban water management: those related to resource efficiency (for water and also water-related energy and nutrients), supply internalisation, urban hydrological performance, sustainable extraction, and recognition of the diverse functions of water...
May 29, 2017: Water Research
https://www.readbyqxmd.com/read/28650153/climate-change-impacts-on-harmful-algal-blooms-in-u-s-freshwater-a-screening-level-assessment
#2
Steven C Chapra, Brent Boehlert, Charles William Fant, Victor J Bierman, Jim Henderson, David Mills, Diane Mas, Lisa Rennels, Lesley Jantarasami, Jeremy Martinich, Kenneth Strzepek, Hans W Paerl
Cyanobacterial harmful algal blooms (CyanoHABs) have serious adverse effects on human and environmental health. Herein, we developed a modeling framework that predicts the effect of climate change on cyanobacteria concentrations in large reservoirs in the contiguous U.S. The framework, which uses climate change projections from five global circulation models, two greenhouse gas emission scenarios, and two cyanobacterial growth scenarios, is unique in coupling climate projections with a hydrologic/water quality network model of the contiguous United States...
June 26, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28649324/conceptualising-the-interactive-effects-of-climate-change-and-biological-invasions-on-subarctic-freshwater-fish
#3
REVIEW
Robert J Rolls, Brian Hayden, Kimmo K Kahilainen
Climate change and species invasions represent key threats to global biodiversity. Subarctic freshwaters are sentinels for understanding both stressors because the effects of climate change are disproportionately strong at high latitudes and invasion of temperate species is prevalent. Here, we summarize the environmental effects of climate change and illustrate the ecological responses of freshwater fishes to these effects, spanning individual, population, community and ecosystem levels. Climate change is modifying hydrological cycles across atmospheric, terrestrial and aquatic components of subarctic ecosystems, causing increases in ambient water temperature and nutrient availability...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28649233/microbial-community-response-to-terrestrially-derived-dissolved-organic-matter-in-the-coastal-arctic
#4
Rachel E Sipler, Colleen T E Kellogg, Tara L Connelly, Quinn N Roberts, Patricia L Yager, Deborah A Bronk
Warming at nearly twice the global rate, higher than average air temperatures are the new 'normal' for Arctic ecosystems. This rise in temperature has triggered hydrological and geochemical changes that increasingly release carbon-rich water into the coastal ocean via increased riverine discharge, coastal erosion, and the thawing of the semi-permanent permafrost ubiquitous in the region. To determine the biogeochemical impacts of terrestrially derived dissolved organic matter (tDOM) on marine ecosystems we compared the nutrient stocks and bacterial communities present under ice-covered and ice-free conditions, assessed the lability of Arctic tDOM to coastal microbial communities from the Chukchi Sea, and identified bacterial taxa that respond to rapid increases in tDOM...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28649141/the-impact-of-lake-and-reservoir-parameterization-on-global-streamflow-simulation
#5
Zuzanna Zajac, Beatriz Revilla-Romero, Peter Salamon, Peter Burek, Feyera A Hirpa, Hylke Beck
Lakes and reservoirs affect the timing and magnitude of streamflow, and are therefore essential hydrological model components, especially in the context of global flood forecasting. However, the parameterization of lake and reservoir routines on a global scale is subject to considerable uncertainty due to lack of information on lake hydrographic characteristics and reservoir operating rules. In this study we estimated the effect of lakes and reservoirs on global daily streamflow simulations of a spatially-distributed LISFLOOD hydrological model...
May 2017: Journal of Hydrology
https://www.readbyqxmd.com/read/28646778/the-hydrological-functioning-of-a-constructed-fen-wetland-watershed
#6
Scott J Ketcheson, Jonathan S Price, Owen Sutton, George Sutherland, Eric Kessel, Richard M Petrone
Mine reclamation requires the reconstruction of entire landforms and drainage systems. The hydrological regime of reclaimed landscapes will be a manifestation of the processes operating within the individual landforms that comprise it. Hydrology is the most important process regulating wetland function and development, via strong controls on chemical and biotic processes. Accordingly, this research addresses the growing and immediate need to understand the hydrological processes that operate within reconstructed landscapes following resource extraction...
June 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28646776/characterizing-the-pahs-in-surface-waters-and-snow-in-the-athabasca-region-implications-for-identifying-hydrological-pathways-of-atmospheric-deposition
#7
S J Birks, S Cho, E Taylor, Y Yi, J J Gibson
The composition of polycyclic aromatic hydrocarbons present in snow and surface waters in the Athabasca Oil Sands Region (AOSR) was characterized in order to identify major contributors to the organics detected in rivers and lakes in the region. PAH concentrations, measured by three monitoring programs in 2011, were used to compare the PAH compositions of snow and surface waters across the AOSR. The 2011 dataset includes total (dissolved+particulate) concentrations of thirty-four parent and alkylated PAH compounds in 105 snow, 272 river, and 3 lake samples...
June 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28645710/impact-of-upstream-river-inputs-and-reservoir-operation-on-phosphorus-fractions-in-water-particulate-phases-in-the-three-gorges-reservoir
#8
Chaonan Han, Binghui Zheng, Yanwen Qin, Yingqun Ma, Chenchen Yang, Zhichao Liu, Wei Cao, Minghui Chi
The impoundment of the Three Gorges Reservoir (TGR) has changed water-sand transport regime, with inevitable effects on phosphorus transport behavior in the TGR. In this study, we measured phosphorus fractions in water and suspended particles transported from upstream rivers of the TGR (the Yangtze River, the Jialing River and the Wu River) to reservoir inner region over the full operation schedule of the TGR. The aim was to determine how phosphorus fractions in water and particulate phases varied in response to natural hydrological processes and reservoir operations...
June 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28645050/land-use-affects-total-dissolved-nitrogen-and-nitrate-concentrations-in-tropical-montane-streams-in-kenya
#9
Suzanne R Jacobs, Lutz Breuer, Klaus Butterbach-Bahl, David E Pelster, Mariana C Rufino
African tropical montane forests are facing fast and dynamic changes in land use. However, the impacts of these changes on stream water quality are understudied. This paper aims at assessing the effect of land use and physical catchment characteristics on stream water concentrations of dissolved organic carbon (DOC), total dissolved nitrogen (TDN), nitrate (NO3-N) and dissolved organic nitrogen (DON) in the Mau Forest, the largest tropical montane forest in Kenya. We conducted five synoptic stream water sampling campaigns at the outlets of 13-16 catchments dominated by either natural forest, smallholder agriculture or commercial tea and tree plantations...
June 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28644917/an-oxygen-isotope-chronometer-for-cellulose-deposition-the-successive-leaves-formed-by-tillers-of-a-c4-perennial-grass
#10
Hai Tao Liu, Fang Yang, Xiao Ying Gong, Rudi Schäufele, Hans Schnyder
Multiannual time series of (palaeo)hydrological information can be reconstructed from the oxygen isotope composition of cellulose (δ(18) OCel ) in biological archives, e.g. tree-rings, but our ability to temporally resolve information at subannual scale is limited. We capitalized on the short and predictable leaf appearance interval (2.4 d) of a perennial C4 grass (Cleistogenes squarrosa), to assess its potential for providing highly time-resolved δ(18) OCel records of vapor pressure deficit (VPD). Plants grown at low (0...
June 23, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28643784/water-scarcity-hotspots-travel-downstream-due-to-human-interventions-in-the-20th-and-21st-century
#11
T I E Veldkamp, Y Wada, J C J H Aerts, P Döll, S N Gosling, J Liu, Y Masaki, T Oki, S Ostberg, Y Pokhrel, Y Satoh, H Kim, P J Ward
Water scarcity is rapidly increasing in many regions. In a novel, multi-model assessment, we examine how human interventions (HI: land use and land cover change, man-made reservoirs and human water use) affected monthly river water availability and water scarcity over the period 1971-2010. Here we show that HI drastically change the critical dimensions of water scarcity, aggravating water scarcity for 8.8% (7.4-16.5%) of the global population but alleviating it for another 8.3% (6.4-15.8%). Positive impacts of HI mostly occur upstream, whereas HI aggravate water scarcity downstream; HI cause water scarcity to travel downstream...
June 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28641187/multi-criteria-decision-support-system-dss-for-optimal-locations-of-soil-aquifer-treatment-sat-facilities
#12
P Tsangaratos, A Kallioras, Th Pizpikis, E Vasileiou, I Ilia, F Pliakas
Managed Aquifer Recharge is a wide-spread well-established groundwater engineering method which is largely seen as sound and sustainable solution to water scarcity hydrologically sensitive areas, such as the Circum Mediterranean. The process of site selection for the installation of a MAR facility is of paramount importance for the feasibility and effectiveness of the project itself, especially when the facility will include the use of waters of impaired quality as a recharge source, as in the case of Soil-Aquifer-Treatment systems...
June 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28639406/controlling-cyanobacterial-harmful-blooms-in-freshwater-ecosystems
#13
Hans W Paerl
Cyanobacteria's long evolutionary history has enabled them to adapt to geochemical and climatic changes, and more recent human and climatic modifications of aquatic ecosystems, including nutrient over-enrichment, hydrologic modifications, and global warming. Harmful (toxic, hypoxia-generating, food web altering) cyanobacterial bloom (CyanoHAB) genera are controlled by the synergistic effects of nutrient (nitrogen and phosphorus) supplies, light, temperature, water residence/flushing times, and biotic interactions...
June 21, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/28638092/from-shifting-cultivation-to-teak-plantation-effect-on-overland-flow-and-sediment-yield-in-a-montane-tropical-catchment
#14
Olivier Ribolzi, Olivier Evrard, Sylvain Huon, Anneke de Rouw, Norbert Silvera, Keo Oudone Latsachack, Bounsamai Soulileuth, Irène Lefèvre, Alain Pierret, Guillaume Lacombe, Oloth Sengtaheuanghoung, Christian Valentin
Soil erosion supplies large quantities of sediments to rivers of Southeastern Asia. It reduces soil fertility of agro-ecosystems located on hillslopes, and it degrades, downstream, water resource quality and leads to the siltation of reservoirs. An increase in the surface area covered with commercial perennial monocultures such as teak plantations is currently observed at the expanse of traditional slash-and-burn cultivation systems in steep montane environments of these regions. The impacts of land-use change on the hydrological response and sediment yields have been investigated in a representative catchment of Laos monitored for 13 years...
June 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28636199/widespread-occurrence-and-potential-for-biodegradation-of-bioactive-contaminants-in-congaree-national-park-usa
#15
Paul M Bradley, William A Battaglin, Jimmy M Clark, Frank Henning, Michelle L Hladik, Luke R Iwanowicz, Celeste A Journey, Jeffrey W Riley, Kristin M Romanok
Organic contaminants with designed molecular bioactivity, such as pesticides and pharmaceuticals, originate from human and agricultural sources, occur frequently in surface waters, and threaten the structure and function of aquatic and terrestrial ecosystems. Congaree National Park in South Carolina (USA) is a vulnerable park unit due to its location downstream of multiple urban and agricultural contaminant sources and its hydrologic setting, being composed almost entirely of floodplain and aquatic environments...
June 21, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28635625/soil-moisture-content-estimation-based-on-sentinel-1-and-auxiliary-earth-observation-products-a-hydrological-approach
#16
Dimitrios D Alexakis, Filippos-Dimitrios K Mexis, Anthi-Eirini K Vozinaki, Ioannis N Daliakopoulos, Ioannis K Tsanis
A methodology for elaborating multi-temporal Sentinel-1 and Landsat 8 satellite images for estimating topsoil Soil Moisture Content (SMC) to support hydrological simulation studies is proposed. After pre-processing the remote sensing data, backscattering coefficient, Normalized Difference Vegetation Index (NDVI), thermal infrared temperature and incidence angle parameters are assessed for their potential to infer ground measurements of SMC, collected at the top 5 cm. A non-linear approach using Artificial Neural Networks (ANNs) is tested...
June 21, 2017: Sensors
https://www.readbyqxmd.com/read/28634870/assessing-different-sources-of-uncertainty-in-hydrological-projections-of-high-and-low-flows-case-study-for-omerli-basin-istanbul-turkey
#17
Batuhan Eren Engin, Ismail Yücel, Aysen Yilmaz
This study investigates the assessment of uncertainty contribution in projected changes of high and low flows from parameterization of a hydrological model and inputs of ensemble regional climate models (RCM). An ensemble of climate projections including 15 global circulation model (GCM)/RCM combinations and two bias corrections (change factor (CF) and bias correction in mean (BC)) was used to generate streamflow series for a reference and future period using the Hydrologiska Byråns Vattenbalansavdelning (HBV) model with the 25 best-fit parameter sets based on four objective functions...
July 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28631831/spatial-and-temporal-trends-and-flow-dynamics-of-glyphosate-and-other-pesticides-within-an-agricultural-watershed-in-argentina
#18
Débora J Pérez, Elena Okada, Eduardo De Gerónimo, Mirta L Menone, Virginia C Aparicio, José L Costa
In the present study, we evaluated the spatial and temporal trends of current use pesticides in surface water and sediments and to determine its relation with hydrological stream dynamics within the agricultural watershed of El Crespo stream. We sampled two contrasting sites: Site 1 (upstream) surrounded by agricultural lands, and Site 2 (downstream) surrounded by natural grasslands. Most of the applied pesticides (i.e. glyphosate, 2,4-D, atrazine, tebuconazole and imidacloprid) were detected in high frequencies in surface water samples at both sites...
June 20, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28630484/simulated-responses-of-permafrost-distribution-to-climate-change-on-the-qinghai-tibet-plateau
#19
Qing Lu, Dongsheng Zhao, Shaohong Wu
Climate warming causes changes in permafrost distribution, which affects the surface energy balance, hydrologic cycle and carbon flux in cold regions. In this study, the Surface Frost Number model was applied to examine permafrost distribution on the Qinghai-Tibet Plateau (QTP) under the four RCPs (RCP2.6, RCP4.5, RCP6.0, and RCP8.5). The Kappa statistic was used to evaluate model results by comparing simulations of baseline permafrost distribution (1981-2010) with the existing frozen soil maps. The comparison shows that the Surface Frost Number model is suitable for simulating the general characteristics of permafrost distribution on the QTP...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28628816/are-calanco-landforms-similar-to-river-basins
#20
N A Caraballo-Arias, V Ferro
In the past badlands have been often considered as ideal field laboratories for studying landscape evolution because of their geometrical similarity to larger fluvial systems. For a given hydrological process, no scientific proof exists that badlands can be considered a model of river basin prototypes. In this paper the measurements carried out on 45 Sicilian calanchi, a type of badlands that appears as a small-scale hydrographic unit, are used to establish their morphological similarity with river systems whose data are available in the literature...
June 16, 2017: Science of the Total Environment
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