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Soil and Water Assessment Tool model; evapotranspiration; land use; rivers; soil; spectrometers; vegetation cover; watersheds; Mississippi
Abstract:
... Evapotranspiration (ET) provides important information for hydrological studies, including estimating plant water requirements which can be derived from remote sensing data or simulated using hydrological models. In this study, ET derived from the Moderate Resolution Imaging Spectrometer (MODIS) was compared with ET simulated by the calibrated and validated Soil and Water Assessment Tool (SWAT) mo ...
Soil and Water Assessment Tool model; administrative management; case studies; phosphorus; rivers; sediments; stream flow; total nitrogen; water quality; watersheds; Mississippi
Abstract:
... Impact of Best Management Practices (BMPs) can be evaluated using hydrologic and water quality models. Although numerous models with diverse function, capability and degree of complexity are available, suitable model for each watershed should be determined. The Soil and Water Assessment Tool (SWAT) and Hydrologic Simulation Program-Fortran (HSPF) models were applied to the Big Sunflower River Wate ...
Amit Kumar; Simon N. Gosling; Matthew F. Johnson; Matthew D. Jones; Jamal Zaherpour; Rohini Kumar; Guoyong Leng; Hannes Müller Schmied; Jenny Kupzig; Lutz Breuer; Naota Hanasaki; Qiuhong Tang; Sebastian Ostberg; Tobias Stacke; Yadu Pokhrel; Yoshihide Wada; Yoshimitsu Masaki
drought; hydrologic models; rivers; runoff; time series analysis; watersheds; Mississippi; Niger
Abstract:
... Although global- and catchment-scale hydrological models are often shown to accurately simulate long-term runoff time-series, far less is known about their suitability for capturing hydrological extremes, such as droughts. Here we evaluated simulations of hydrological droughts from nine catchment scale hydrological models (CHMs) and eight global scale hydrological models (GHMs) for eight large cat ...
... Understanding morphodynamic processes and their controls has long been the focus of geomorphologists. Studying channel adjustments with respect to fractional sediment (clay + silt, sand, and gravel) is often hampered by the lack of both long-term measurements and detailed information about their transport. Taking advantage of a 20-year detailed dataset from Goodwin Creek, Mississippi (USA), this s ...
ammonium nitrogen; drought; environmental management; exports; nitrates; nitrogen; total nitrogen; water quality; watersheds; Mississippi
Abstract:
... Combinations of best management practices (BMPs) are needed to achieve nutrient reduction goals in the Mississippi/Atchafalaya River Basin (MARB), but field results are crucial to encourage stacked adoption of BMPs. A paired catchment-scale study (2015–18) was done to assess the impact of (i) BMPs, (ii) precipitation patterns, and (iii) seasonality on nitrogen (N) export. Flow-weighted samples wer ...
catenas; climate; climate change; land cover; land degradation; landscapes; rain; soil conservation; soil erosion; watersheds; Amazon River; Mississippi; Mississippi River; Yangtze River; Yellow River
Abstract:
... Soil erosion is one of the main drivers of land degradation across the world, thus soil conservation service has received increasing attention. Limited studies have focused on it, hence this study investigates spatial and temporal patterns on soil conservation service in four large representative basins globally (i.e., Amazon, Mississippi, Yangtze, and Yellow River Basins), between 2001 and 2018. ...
... Remote-sensing methods based on optical and thermal satellite imagery have been proposed to estimate fine-resolution (30 m) rootzone soil moisture θ¯. In these methods, θ¯ is most commonly estimated using a single empirical relationship with evaporative fraction ΛSEB or evaporative index ΛPET. Methods have been proposed recently to estimate these relationships based on regional climate, soil, and ...
databases; fish industry; inventories; land cover; landscapes; lentic systems; models; remote sensing; research; water; watersheds; Alabama; Mississippi
Abstract:
... The Blue Lentic Belt is a spatial belt of dense lentic habitats formed in the Mobile River Basin since the 1990s, and it is imposing considerable environmental stress on local and downstream aquatic habitats. Depicting the spatiotemporal evolution of the Blue Lentic Belt is essential to understanding its formation and consequential impacts on local environments. However, relevant discussion on it ...
case studies; climate change; decision making; flood control; floodplains; rivers; social welfare; socioeconomics; watersheds; Mississippi
Abstract:
... Worldwide, rivers provide important socio-economic and environmental functions and are essential to human well-being. The growing demand of user-functions and the change in river conditions due to large-scale morphology and climate change, increase the pressure on lowland river systems (e.g. Rhine, Meuse, Danube and Mississippi). To ensure a multi-functional river system, challenges related to unc ...
Tricia Kyzar; Ilgar Safak; Just Cebrian; Mark W. Clark; Nicole Dix; Kaitlyn Dietz; Rachel K. Gittman; John Jaeger; Kara R. Radabaugh; Annie Roddenberry; Carter S. Smith; Eric L. Sparks; Benjamin Stone; Gary Sundin; Michelle Taubler; Christine Angelini
acidification; coastal ecosystems; ecological balance; environmental management; estuaries; freshwater; global change; human population; humans; industry; land cover; landscapes; oysters; population growth; sea level; shorelines; storms; surveys; watersheds; Mississippi; North Carolina
Abstract:
... Formed at the confluence of marine and fresh waters, estuaries experience both the seaside pressures of rising sea levels and increasing storm severity, and watershed and precipitation changes that are shifting the quality and quantity of freshwater and sediments delivered from upstream sources. Boating, shoreline hardening, harvesting pressure, and other signatures of human activity are also incr ...
base flow; biodegradation; climate change; environment; estuaries; evolution; factor analysis; global carbon budget; hurricanes; riparian areas; rivers; streams; water quality; watersheds; wetlands; China; Mississippi
Abstract:
... Chromophoric dissolved organic matter (CDOM) exported from riverine catchments can influence biogeochemical processes in coastal environments with implications for water quality and carbon budget. Despite recent efforts to quantify C fluxes during high flow events, knowledge gaps exist regarding the fluxes and yield of terrestrial, reactive vs. recalcitrant CDOM under episodic to base-flow conditi ...
Emily Dearing Crampton-Flood; Carolien M.H. van der Weijst; Guido van der Molen; Magali Bouquet; Yord Yedema; Timme H. Donders; Francesca Sangiorgi; Appy Sluijs; Jaap S. Sinninghe Damsté; Francien Peterse
... The fractional abundance of branched glycerol dialkyl glycerol tetraether (brGDGT) membrane lipids in coastal marine sediments has been posited as a proxy for the reconstruction of terrestrial temperatures on the nearby land, based on the assumption that they are produced in soils and delivered to the marine realm by rivers following erosion. Here, we test the suitability of brGDGTs as a continent ...
anisotropy; drainage; energy; geometry; models; remote sensing; rivers; time series analysis; watersheds; Africa; Mississippi; Nile River
Abstract:
... GRACE spherical harmonics are well-adapted for representation of hydrological signals in river drainage basins of large size such as the Amazon or Mississippi basins. However, when one needs to study smaller drainage basins, one comes up against the low spatial resolution of the solutions in spherical harmonics. To overcome this limitation, we propose a new approach based on Slepian functions whic ...
... Ecological disturbances may affect both habitat connectivity and heterogeneity, changing the dominant metacommunity processes affecting local communities. Altered fluvial sediment dynamics in rivers experiencing headcutting and accelerated erosion may foster morphologically unstable reaches in which supplies of habitat‐forming materials are spatially and temporally unpredictable. We hypothesise su ...
... Benthic habitats in shallow oxbow lakes may serve as permanent nitrogen (N) sinks by facilitating denitrification. Oxbow sediments may also accumulate nutrients through uptake, deposition and heterotrophic N₂ fixation, and ultimately provide a significant internal source of N and phosphorus (P) through sediment release to the water column. To better understand nutrient source-sink dynamics in oxbo ...
... Cultivation of cellulosic biomass on marginal lands in the Missouri/Mississippi River Corridor (MMRC) could improve environmental performance for the watershed, e.g. nutrient runoff interception, erosion stabilization, feedstock for bio-based energy, and barge shipments could have net energy benefits. This work reviewed marginal lands literature to reach a generic definition that could be linked w ...
Hypophthalmichthys molitrix; Hypophthalmichthys nobilis; Ictiobus cyprinellus; food webs; freshwater; planktivores; plankton; rivers; silver; watersheds; young of the year; Illinois; Mississippi; Mississippi River
Abstract:
... The widespread introduction of non-native fishes has contributed to freshwater ecosystems being considered among the most altered ecosystems globally. Of particular concern are invasive planktivorous fishes (e.g., silver carp Hypophthalmichthys molitrix and bighead carp H. nobilis, collectively known as bigheaded carps) that have the potential to modify basal food web structure and compete for pla ...
... Reservoirs are mostly managed at local scales as spatially independent units. A basin‐scale perspective may increase awareness at a broader scope and generate insight not evident at local scales. We examined the array of reservoir attributes and fisheries in the Mississippi Basin to identify management opportunities. The basin is the third largest in the world and includes over 1,700 reservoirs >1 ...
... Aquatic habitats are essential for aquaculture, agriculture, and municipal water supply. The geographical location and quantitative information about the aquatic habitats are critical for inventorying, monitoring, and managing these valuable resources. This paper presents a novel method that integrates the object-oriented image analysis and DEM-based stream network analysis to map and quantify len ...
germination; greenhouse experimentation; hydrology; land use; nitrogen; seedlings; soil; vegetation; watersheds; wetland plants; wetlands; Mississippi; Mississippi River
Abstract:
... In early successional stages, seedlings serve as a link between past and future wetland plant assemblages. Our objectives were to 1) enumerate seedling density in soil exposed to various hydrologic treatments 2) determine similarities between standing vegetation, germinated seedlings, and early successional stage assemblages, and 3) better understand effects of landscape-level factors on overall w ...
Micropterus dolomieu; bass; drainage; gene flow; genetic structure; genetic variation; habitats; lakes; microsatellite repeats; philopatry; population structure; rivers; watersheds; Lake Michigan; Michigan; Mississippi; Mississippi River
Abstract:
... Analysis of genetic connectivity helps to define stock boundaries and provides information on interpopulation dynamics, such as migration and spawning site fidelity. We used 16 microsatellite loci to describe the genetic population structure of 1,215 Smallmouth Bass Micropterus dolomieu from 32 sites throughout the upper Mississippi River and Lake Michigan watersheds. We found that Smallmouth Bass ...
... This study addresses the development of a hydrodynamic model for the Western Mississippi Sound, in the Gulf of Mexico. The study site consists of a riverine part that includes the Lower Pearl River basin and an estuarine part that includes the Western Mississippi Sound. In order to study the driving mechanisms of this area, two hydrodynamic models were developed and linked; one for the Lower Pearl ...
... Rainfall characteristics can be a major factor influencing the ability of best management practices to reduce nutrient loss from agricultural lands to receiving waterbodies. The goal of this study was to examine how rainfall characteristics impacted NO₃ – N concentrations in a tailwater recovery (TWR) ditch implemented at a farm within the Porter Bayou watershed in Mississippi, USA. We used a meth ...
United States Geological Survey; afforestation; aquifers; case studies; groundwater; groundwater recharge; humid subtropical climates; rivers; subtropics; water quality; water shortages; water table; watersheds; Mississippi
Abstract:
... Groundwater resource overdraft is a serious water resource concern worldwide. Although afforestation has been recognized as conserving water resources, improving water quality and mitigating river flood, the role it plays with groundwater resources is not fully investigated. Here we applied the US Geological Survey’s Mississippi Embayment Regional Aquifer Study (MERAS) model to estimate impacts of ...
... This study aimed to investigate the influence of hydrological model calibration/validation on discharge projections for three large river basins (the Rhine, Upper Mississippi and Upper Yellow). Three hydrological models (HMs), which have been firstly calibrated against the monthly discharge at the outlet of each basin (simple calibration), were re-calibrated against the daily discharge at the outl ...
ammonia; dissolved organic matter; factor analysis; hay; land use and land cover maps; pastures; rangelands; soil; surface water; tyrosine; urbanization; water quality; watersheds; Mississippi
Abstract:
... While dissolved organic matter (DOM) is an important indicator of water quality, land use and land cover (LULC) of watersheds define the source, quality, and quantity of DOM delivered to a waterbody. This study examined the influence of various LULC classes in the spatial distribution of DOM in 41 lakes across the state of Mississippi. To scale the influence of LULC classes on DOM distribution, we ...
... Agricultural nonpoint source pollution from the upper areas of the Upper Mississippi, Missouri, and Ohio River basins accounts for the majority of the excess nitrogen that leads to the Gulf of Mexico’s hypoxic zone. However, agriculture landscapes across the USA, Europe, and China are undergoing major changes related to the proliferation of confined animal feeding operations (CAFOs) that account f ...
Internet; agricultural research; databases; hydrology; lakes; water quality; watersheds; Mississippi
Abstract:
... Beasley Lake Watershed is an agriculturally influenced drainage basin in western Mississippi that has been intensively studied for 25 years. As part of the USDA Conservation Effects Assessment Project (CEAP), the watershed has archived hydrology, precipitation, and water quality data in order to measure the effects of multiple USDA Natural Resources Conservation Service conservation practices on l ...
... The hypoxic zone on the Louisiana Continental Shelf (LCS) forms each summer due to nutrient‐enhanced primary production and seasonal stratification associated with freshwater discharges from the Mississippi/Atchafalaya River Basin (MARB). Recent field studies have identified highly productive shallow nearshore waters as an important component of shelf‐wide carbon production contributing to hypoxia ...
United States Environmental Protection Agency; air temperature; cropland; environmental protection; evapotranspiration; forest land; forests; models; statistics; subtropics; water quality; water yield; watersheds; Mississippi
Abstract:
... Forest lands are sometimes thought to increase evapotranspiration (ET) and decrease water yield (WYLD) more than those of croplands, especially in the semi-arid subtropical and tropical regions. Using the US-EPA (Environmental Protection Agency)’s Hydrologic and Water Quality System (HAWQS) model along with Mann Kendall statistics (τ) and Kolmogorov-Smirnov test, I compared ET and WLYD between a c ...
... Agricultural activity enhances topsoil erosion and facilitates the transport of pesticides that alter watershed sediment quality. Agricultural stream (bayou) sediment quality in Mississippi, USA, was evaluated across three bayous, habitats (upstream, midstream, downstream), and seasonally from 2011 to 2014 for pesticide contamination, effects, and bioavailability to Hyalella azteca. Four-week (28- ...
altimeters; area; automation; basins; case studies; detection; geometry; hydrologic models; information; lakes; measurement; monitoring; remote sensing; river flow; rivers; satellite altimetry; satellites; spatial data; storage; surface storage; surface water; surfaces; time series analysis; topography; watersheds; Mississippi; Mississippi River
Abstract:
... Remote sensing data are essential for monitoring the Earth’s surface waters, especially since the amount of publicly available in-situ data is declining. Satellite altimetry provides valuable information on the water levels and variations of lakes, reservoirs and rivers. In combination with satellite imagery, the derived time series allow the monitoring of lake storage changes and river discharge. ...
... HighlightsBetween 1950 and 2017, there was a 12-fold increase in irrigated area in Arkansas and a doubling in Louisiana.Groundwater provides over 90% of the irrigation water applied to the 4 Mha of cropland in the LMRB.Ongoing efforts to address aquifer declines have been multi-faceted and include those of producers, public (local, state, and federal) institutions, and private organizations.Irriga ...
Soil and Water Assessment Tool model; best management practices; conservation practices; corn; crop rotation; groundwater; groundwater recharge; irrigation; planning; rice; soybeans; water shortages; water table; watersheds; Mississippi
Abstract:
... Over the last several decades, increased groundwater usage by agriculture with a consequence of groundwater resource depletion has motivated the discussion of sustainability of groundwater resource. In this study, to investigate the impacts of agricultural best management practices (BMPs) on groundwater level, two kinds of conservation practices and five scenarios of tail water recovery pond and c ...
United States Army Corps of Engineers; United States Geological Survey; models; particle size; pollution load; rivers; sediment yield; sediments; suspended sediment; watersheds; Mississippi; Mississippi River
Abstract:
... The author read with much interest the publication by Mize et al. (2018) on the decrease in suspended-sediment concentrations and loads in the lower Mississippi and Atchafalaya Rivers between 1980 and 2015. Researchers interested in sediment dynamics in the lower Mississippi and Atchafalaya Rivers also should be aware that sediment data previously reported for the lower Mississippi-Atchafalaya Riv ...
... CO2-enriched brine interaction with reservoir minerals and the subsequent mineral trapping of CO2 alter the morphology of pore structure. Such changes in the pore space modify the storage capacity of reservoirs and increase the long-term security of CO2 storage. The extent of pore space modification depends on the relative weight of advection, diffusion and reaction mechanisms. We present a genera ...
Baffaut Claire; Lohani Sapana; Thompson Allen L.; Davis Austin R.; Aryal Niroj; Bjorneberg David L.; Bingner Ronald L.; Dabney Seth M.; Duriancik Lisa F.; James David E.; King Kevin W.; Lee Sangchul; Mccarty Gregory W.; Pease Lindsay A.; Reba Michele L.; Sadeghi Ali M.; Tomer Mark David; Williams Mark R.; Yasarer Lindsey Marie Wittha
... The Soil Vulnerability Index (SVI) classifies inherent vulnerability of cropland to loss of sediment and nutrients by runoff and leaching and is linked to soil properties and topographic slope. Management is not taken into account in this classification, because it is not readily feasible with the lack of a national database, except for the presence of surface or subsurface drainage. When cropland ...
Heather Tallis; Stephen Polasky; Jessica Hellmann; Nathaniel P. Springer; Rich Biske; Dave DeGeus; Randal Dell; Michael Doane; Lisa Downes; Josh Goldstein; Tom Hodgman; Kris Johnson; Ian Luby; Derric Pennington; Michael Reuter; Kathleen Segerson; Isis Stark; John Stark; Carrie Vollmer-Sanders; Sarah Kate Weaver
Farm Bill; basins; coal; crop insurance; econometric models; economic incentives; energy; farmers; farming systems; flood control; floodplains; funding; greenhouse gas emissions; greenhouse gases; habitat conservation; hypoxia; industry; nitrates; politics; profits and margins; runoff; social benefit; soil; soil fertility; subsidies; transportation; water pollution; water supply; watersheds; Gulf of Mexico; Mississippi; Mississippi River; Ohio River
Abstract:
... A central challenge in the Mississippi River Basin is how to continue to support profitable agricultural production, provide water supply, flood control, transportation, and other benefits, while reducing the current burden of environmental degradation. Several practices have been shown to reduce nutrient runoff and water pollution, and improve soil fertility, while often yielding profits for farm ...
... Nutrient losses from Mississippi watersheds degrade downstream water bodies. As forested floodplains intercept agricultural drainage waters, a limiting nutrient like phosphorus (P) could potentially be sequestered in forest soils, reducing P loss to the Gulf of Mexico. Thus far, the role of temperate deciduous floodplain soils for P has not been extensively investigated in the Midwestern United St ...
General Circulation Models; climate change; data collection; lognormal distribution; rivers; runoff; standard deviation; watersheds; Mississippi; Niger
Abstract:
... For 11 large river basins (the Rhine, Tagus, Ganges, Lena, Upper Yellow, Upper Yangtze, Niger, Mackenzie, Upper Mississippi, Upper Amazon and Darling) located on different continents under a wide variety of natural conditions, series of annual river runoff were calculated by means of the land surface model SWAP for the period of 1962–2099. For the historical (base) period (1962–2005), meteorologic ...
basins; hypoxia; nitrates; variance; water quality; watersheds; Gulf of Mexico; Mississippi; Mississippi River; Ohio
Abstract:
... Excessive nitrate loading to the Gulf of Mexico (GoM) has caused widespread hypoxia over many decades. Despite recent reductions in nitrate loads observed at local scales, decreases in nitrate loading from the Mississippi River basin (MRB) to the GoM have been small (1.58% during 2002–2012) with a low level of analytical confidence in this trend. This work seeks to determine the reasons why local‐ ...
... A soil erosion and sediment transport model (WRF-Hydro-Sed) is introduced to WRF-Hydro. As a process-based, fully distributed soil erosion model, WRF-Hydro-Sed accounts for both overland and channel processes. Model performance is evaluated using observed rain gauge, streamflow, and sediment concentration data during rainfall events in the Goodwin Creek Experimental Watershed in Mississippi, USA. ...
General Circulation Models; United States Environmental Protection Agency; air temperature; climate; data collection; environmental assessment; environmental protection; hydrologic models; nitrate nitrogen; orthophosphates; pollution load; rain; rivers; summer; water quality; watersheds; Mississippi
Abstract:
... A vast amount of future climate scenario datasets, created by climate models such as general circulation models (GCMs), have been used in conjunction with watershed models to project future climate variability impact on hydrological processes and water quality. However, these low spatial-temporal resolution datasets are often difficult to downscale spatially and disaggregate temporarily, and they ...
... Conservation and management of cryptic species is particularly challenging since it can be difficult to determine their exact distributions. Knowledge of species distribution is required to recognize management units based on taxonomy and whether there are any pertinent biogeographic patterns that could be relevant to the development of a management plan. Such a situation exists in Illinois with t ...
... This research evaluated the profitability and nitrogen (N) efficiency of real time on-the-go optical sensing measurements (OPM) for variable-rate (VRT) N management for cotton. Two forms of OPM-based VRT N management and the existing farmer practice (FP) were used to determine N rates applied to cotton on 21 farm fields in the lower Mississippi River Basin states of Louisiana, Mississippi, Missour ...
... Lower Mississippi River Alluvial Valley (LMRAV) is located in the humid subtropical region of mid-south USA, and Lower Yazoo River Watershed (LYRW) in Mississippi is within the LMRAV.Groundwater depletion due to anthropogenic activities is an issue of water resource concern in the LMRAV. Some studies suggested that forest lands reduce water recharge from land surface into aquifers as compared to a ...
Helianthus annuus; Soil and Water Assessment Tool model; United States Geological Survey; algorithms; energy balance; evapotranspiration; image analysis; meteorological data; model validation; moderate resolution imaging spectroradiometer; prediction; remote sensing; rivers; spatial data; stream flow; time series analysis; watersheds; Mississippi
Abstract:
... This study applied a time series evapotranspiration (ET) data derived from the remote sensing to evaluate Soil and Water Assessment Tool (SWAT) model calibration, which is a unique method. The SWAT hydrologic model utilized monthly stream flow data from two US Geological Survey (USGS) stations within the Big Sunflower River Watershed (BSRW) in Northwestern, Mississippi. Surface energy balance algo ...
base flow; best management practices; bioretention areas; credit; cropland; data collection; fertilizer application; forests; irrigation water; land use; landscapes; mineralization; nitrate nitrogen; nitrates; nitrogen; nitrogen fertilizers; organic matter; pavements; pollution load; principal component analysis; riparian buffers; rivers; rowcrops; runoff; soil properties; streams; wastewater treatment; water quality; watershed management; watersheds; wetlands; Gulf of Mexico; Mississippi; Nebraska
Abstract:
... Nebraskan streams contribute excess nitrogen to the Mississippi/Atchafalaya River Basin and Gulf of Mexico, which results in major water-quality impairments. Reducing the amount of nitrogen (N) exported in these streams requires the use of best management practices (BMPs) within the landscape. However, proper BMP utilization has rarely been statistically connected to potential controls of N export ...
... The Gravity Recovery And Climate Experiment (GRACE) mission has achieved a quantum leap in knowledge of the Earth's gravity field. However, current gravity field solutions still cannot reach the prelaunch baseline accuracy. One of the reasons for that is the presence of colored noise in GRACE data, which is typically ignored in the classical dynamic approach to gravity field modeling. In this rese ...
... Short-term movements of adult Polyodon spathula (Paddlefish) are well-documented, but long-term movements are underreported. In this study, we describe extraordinary distances traveled by 4 Paddlefish that were captured, tagged, and released in Moon Lake, a remote oxbow lake in Coahoma County, MS. After 8–24 months at large, the 4 fish were recaptured in the Missouri, Mississippi, and Ohio rivers, ...